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-rw-r--r--tests/codegen/function-arguments-noopt.rs6
-rw-r--r--tests/codegen/function-arguments.rs26
-rw-r--r--tests/mir-opt/building/async_await.a-{closure#0}.generator_resume.0.mir4
-rw-r--r--tests/mir-opt/building/async_await.b-{closure#0}.generator_resume.0.mir10
-rw-r--r--tests/mir-opt/combine_clone_of_primitives.{impl#0}-clone.InstCombine.diff5
-rw-r--r--tests/mir-opt/const_allocation.main.ConstProp.after.32bit.mir16
-rw-r--r--tests/mir-opt/const_allocation.main.ConstProp.after.64bit.mir16
-rw-r--r--tests/mir-opt/const_debuginfo.main.ConstDebugInfo.diff19
-rw-r--r--tests/mir-opt/const_goto_storage.match_nested_if.ConstGoto.diff2
-rw-r--r--tests/mir-opt/const_prop/aggregate.foo.ConstProp.diff55
-rw-r--r--tests/mir-opt/const_prop/aggregate.foo.PreCodegen.after.mir49
-rw-r--r--tests/mir-opt/const_prop/aggregate.main.ConstProp.diff40
-rw-r--r--tests/mir-opt/const_prop/aggregate.main.PreCodegen.after.mir35
-rw-r--r--tests/mir-opt/const_prop/aggregate.rs9
-rw-r--r--tests/mir-opt/const_prop/discriminant.main.ConstProp.32bit.diff11
-rw-r--r--tests/mir-opt/const_prop/discriminant.main.ConstProp.64bit.diff11
-rw-r--r--tests/mir-opt/const_prop/invalid_constant.main.ConstProp.diff6
-rw-r--r--tests/mir-opt/const_prop/issue_66971.main.ConstProp.diff7
-rw-r--r--tests/mir-opt/const_prop/issue_67019.main.ConstProp.diff9
-rw-r--r--tests/mir-opt/const_prop/mutable_variable_aggregate.main.ConstProp.diff25
-rw-r--r--tests/mir-opt/const_prop/mutable_variable_aggregate_mut_ref.main.ConstProp.diff14
-rw-r--r--tests/mir-opt/const_prop/mutable_variable_unprop_assign.main.ConstProp.diff10
-rw-r--r--tests/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.32bit.diff9
-rw-r--r--tests/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.64bit.diff9
-rw-r--r--tests/mir-opt/const_prop/optimizes_into_variable.main.PreCodegen.after.32bit.mir4
-rw-r--r--tests/mir-opt/const_prop/optimizes_into_variable.main.PreCodegen.after.64bit.mir4
-rw-r--r--tests/mir-opt/const_prop/optimizes_into_variable.main.ScalarReplacementOfAggregates.32bit.diff9
-rw-r--r--tests/mir-opt/const_prop/optimizes_into_variable.main.ScalarReplacementOfAggregates.64bit.diff9
-rw-r--r--tests/mir-opt/const_prop/optimizes_into_variable.main.SimplifyLocals-final.after.32bit.mir4
-rw-r--r--tests/mir-opt/const_prop/optimizes_into_variable.main.SimplifyLocals-final.after.64bit.mir4
-rw-r--r--tests/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.diff13
-rw-r--r--tests/mir-opt/const_prop_miscompile.bar.ConstProp.diff4
-rw-r--r--tests/mir-opt/const_prop_miscompile.foo.ConstProp.diff4
-rw-r--r--tests/mir-opt/copy-prop/issue_107511.main.CopyProp.diff4
-rw-r--r--tests/mir-opt/copy-prop/move_projection.f.CopyProp.diff31
-rw-r--r--tests/mir-opt/copy-prop/move_projection.rs34
-rw-r--r--tests/mir-opt/dataflow-const-prop/enum.main.DataflowConstProp.diff4
-rw-r--r--tests/mir-opt/dataflow-const-prop/repr_transparent.main.DataflowConstProp.diff8
-rw-r--r--tests/mir-opt/dataflow-const-prop/sibling_ptr.main.DataflowConstProp.diff4
-rw-r--r--tests/mir-opt/dataflow-const-prop/struct.main.DataflowConstProp.diff3
-rw-r--r--tests/mir-opt/dataflow-const-prop/tuple.main.DataflowConstProp.diff8
-rw-r--r--tests/mir-opt/deaggregator_test.bar.Deaggregator.diff21
-rw-r--r--tests/mir-opt/deaggregator_test.rs17
-rw-r--r--tests/mir-opt/deaggregator_test_enum.bar.Deaggregator.diff20
-rw-r--r--tests/mir-opt/deaggregator_test_enum.rs19
-rw-r--r--tests/mir-opt/deaggregator_test_enum_2.rs21
-rw-r--r--tests/mir-opt/deaggregator_test_enum_2.test1.Deaggregator.diff45
-rw-r--r--tests/mir-opt/deaggregator_test_multiple.rs17
-rw-r--r--tests/mir-opt/deaggregator_test_multiple.test.Deaggregator.diff35
-rw-r--r--tests/mir-opt/early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff4
-rw-r--r--tests/mir-opt/early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff4
-rw-r--r--tests/mir-opt/early_otherwise_branch.opt3.EarlyOtherwiseBranch.diff4
-rw-r--r--tests/mir-opt/early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff5
-rw-r--r--tests/mir-opt/early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.diff30
-rw-r--r--tests/mir-opt/early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff4
-rw-r--r--tests/mir-opt/funky_arms.float_to_exponential_common.ConstProp.diff14
-rw-r--r--tests/mir-opt/generator_tiny.main-{closure#0}.generator_resume.0.mir4
-rw-r--r--tests/mir-opt/inline/cycle.f.Inline.diff2
-rw-r--r--tests/mir-opt/inline/inline_closure.foo.Inline.after.mir14
-rw-r--r--tests/mir-opt/inline/inline_closure_borrows_arg.foo.Inline.after.mir14
-rw-r--r--tests/mir-opt/inline/inline_closure_captures.foo.Inline.after.mir19
-rw-r--r--tests/mir-opt/inline/inline_diverging.h.Inline.diff4
-rw-r--r--tests/mir-opt/inline/inline_generator.main.Inline.diff24
-rw-r--r--tests/mir-opt/inline/inline_into_box_place.main.Inline.diff4
-rw-r--r--tests/mir-opt/inline/issue_76997_inline_scopes_parenting.main.Inline.after.mir14
-rw-r--r--tests/mir-opt/inline/issue_78442.bar.Inline.diff2
-rw-r--r--tests/mir-opt/inline/issue_78442.bar.RevealAll.diff2
-rw-r--r--tests/mir-opt/issues/issue_75439.foo.MatchBranchSimplification.diff7
-rw-r--r--tests/mir-opt/lower_intrinsics.f_copy_nonoverlapping.LowerIntrinsics.diff4
-rw-r--r--tests/mir-opt/matches_reduce_branches.bar.MatchBranchSimplification.diff10
-rw-r--r--tests/mir-opt/matches_reduce_branches.foo.MatchBranchSimplification.diff2
-rw-r--r--tests/mir-opt/matches_reduce_branches.match_nested_if.MatchBranchSimplification.diff2
-rw-r--r--tests/mir-opt/packed_struct_drop_aligned.main.SimplifyCfg-elaborate-drops.after.mir15
-rw-r--r--tests/mir-opt/remove_storage_markers.main.RemoveStorageMarkers.diff4
-rw-r--r--tests/mir-opt/remove_zsts.get_union.PreCodegen.after.mir5
-rw-r--r--tests/mir-opt/remove_zsts.get_union.RemoveZsts.diff6
-rw-r--r--tests/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.mir10
-rw-r--r--tests/mir-opt/retag.main.SimplifyCfg-elaborate-drops.after.mir15
-rw-r--r--tests/mir-opt/separate_const_switch.identity.SeparateConstSwitch.diff60
-rw-r--r--tests/mir-opt/separate_const_switch.too_complex.SeparateConstSwitch.diff48
-rw-r--r--tests/mir-opt/simple_option_map_e2e.ezmap.PreCodegen.after.mir21
-rw-r--r--tests/mir-opt/simplify_locals.d1.SimplifyLocals-before-const-prop.diff3
-rw-r--r--tests/mir-opt/simplify_locals.d2.SimplifyLocals-before-const-prop.diff10
-rw-r--r--tests/mir-opt/simplify_locals_fixedpoint.foo.SimplifyLocals-final.diff10
-rw-r--r--tests/mir-opt/simplify_locals_removes_unused_consts.main.SimplifyLocals-before-const-prop.diff30
-rw-r--r--tests/mir-opt/simplify_locals_removes_unused_discriminant_reads.map.SimplifyLocals-before-const-prop.diff7
-rw-r--r--tests/mir-opt/sroa.copies.ScalarReplacementOfAggregates.diff91
-rw-r--r--tests/mir-opt/sroa.dropping.ScalarReplacementOfAggregates.diff14
-rw-r--r--tests/mir-opt/sroa.enums.ScalarReplacementOfAggregates.diff4
-rw-r--r--tests/mir-opt/sroa.escaping.ScalarReplacementOfAggregates.diff9
-rw-r--r--tests/mir-opt/sroa.flat.ScalarReplacementOfAggregates.diff21
-rw-r--r--tests/mir-opt/sroa.ref_copies.ScalarReplacementOfAggregates.diff56
-rw-r--r--tests/mir-opt/sroa.rs32
-rw-r--r--tests/mir-opt/sroa.structs.ScalarReplacementOfAggregates.diff9
-rw-r--r--tests/mir-opt/sroa.unions.ScalarReplacementOfAggregates.diff3
-rw-r--r--tests/mir-opt/try_identity_e2e.new.PreCodegen.after.mir33
-rw-r--r--tests/mir-opt/try_identity_e2e.old.PreCodegen.after.mir8
-rw-r--r--tests/mir-opt/uninhabited_enum_branching.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir6
-rw-r--r--tests/mir-opt/uninhabited_enum_branching.main.UninhabitedEnumBranching.diff6
-rw-r--r--tests/mir-opt/uninhabited_enum_branching2.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir7
-rw-r--r--tests/mir-opt/uninhabited_enum_branching2.main.UninhabitedEnumBranching.diff7
-rw-r--r--tests/mir-opt/unusual_item_types.Test-X-{constructor#0}.built.after.mir4
-rw-r--r--tests/mir-opt/while_let_loops.change_loop_body.ConstProp.diff3
-rw-r--r--tests/rustdoc-gui/src/test_docs/lib.rs16
-rw-r--r--tests/rustdoc-js-std/regex.js10
-rw-r--r--tests/rustdoc-js-std/typed-query.js4
-rw-r--r--tests/rustdoc-js/doc-alias.js2
-rw-r--r--tests/rustdoc-js/module-substring.js1
-rw-r--r--tests/rustdoc-ui/z-help.stdout1
-rw-r--r--tests/rustdoc/async-fn.rs2
-rw-r--r--tests/rustdoc/auxiliary/inline-default-methods.rs12
-rw-r--r--tests/rustdoc/const-generics/const-generics-docs.rs2
-rw-r--r--tests/rustdoc/decl-trailing-whitespace.declaration.html24
-rw-r--r--tests/rustdoc/doc-notable_trait.some-struct-new.html2
-rw-r--r--tests/rustdoc/doc-notable_trait.wrap-me.html2
-rw-r--r--tests/rustdoc/generic-associated-types/gats.rs4
-rw-r--r--tests/rustdoc/inline-default-methods.rs16
-rw-r--r--tests/rustdoc/inline_cross/impl_trait.rs2
-rw-r--r--tests/rustdoc/issue-34928.rs2
-rw-r--r--tests/rustdoc/issue-85454.rs4
-rw-r--r--tests/rustdoc/reexports-priv.rs2
-rw-r--r--tests/rustdoc/where.SWhere_Simd_item-decl.html4
-rw-r--r--tests/rustdoc/where.SWhere_TraitWhere_item-decl.html15
-rw-r--r--tests/rustdoc/where.rs8
-rw-r--r--tests/rustdoc/whitespace-after-where-clause.enum.html3
-rw-r--r--tests/rustdoc/whitespace-after-where-clause.enum2.html2
-rw-r--r--tests/rustdoc/whitespace-after-where-clause.struct.html3
-rw-r--r--tests/rustdoc/whitespace-after-where-clause.struct2.html2
-rw-r--r--tests/rustdoc/whitespace-after-where-clause.trait.html4
-rw-r--r--tests/rustdoc/whitespace-after-where-clause.trait2.html1
-rw-r--r--tests/rustdoc/whitespace-after-where-clause.union.html3
-rw-r--r--tests/rustdoc/whitespace-after-where-clause.union2.html2
-rw-r--r--tests/ui/associated-types/hr-associated-type-projection-1.stderr4
-rw-r--r--tests/ui/async-await/future-sizes/async-awaiting-fut.rs24
-rw-r--r--tests/ui/async-await/future-sizes/async-awaiting-fut.stdout72
-rw-r--r--tests/ui/async-await/future-sizes/large-arg.stdout10
-rw-r--r--tests/ui/attributes/log-backtrace.rs4
-rw-r--r--tests/ui/borrowck/borrowck-borrow-mut-base-ptr-in-aliasable-loc.stderr8
-rw-r--r--tests/ui/borrowck/issue-85765.rs6
-rw-r--r--tests/ui/borrowck/issue-85765.stderr24
-rw-r--r--tests/ui/borrowck/issue-91206.rs2
-rw-r--r--tests/ui/borrowck/issue-91206.stderr8
-rw-r--r--tests/ui/borrowck/issue-92015.stderr7
-rw-r--r--tests/ui/const-generics/generic_const_exprs/const_kind_expr/relate_binop_arg_tys.rs18
-rw-r--r--tests/ui/const-generics/generic_const_exprs/const_kind_expr/relate_binop_arg_tys.stderr20
-rw-r--r--tests/ui/const-generics/generic_const_exprs/const_kind_expr/relate_cast_arg_ty.rs12
-rw-r--r--tests/ui/const-generics/generic_const_exprs/const_kind_expr/relate_cast_arg_ty.stderr20
-rw-r--r--tests/ui/consts/const-err-late.stderr12
-rw-r--r--tests/ui/consts/const-eval/const-eval-query-stack.rs3
-rw-r--r--tests/ui/consts/const-eval/const-eval-query-stack.stderr2
-rw-r--r--tests/ui/derives/deriving-copyclone.stderr24
-rw-r--r--tests/ui/derives/deriving-with-repr-packed.rs10
-rw-r--r--tests/ui/derives/deriving-with-repr-packed.stderr32
-rw-r--r--tests/ui/dyn-star/align.over_aligned.stderr6
-rw-r--r--tests/ui/dyn-star/align.rs2
-rw-r--r--tests/ui/dyn-star/check-size-at-cast-polymorphic-bad.rs2
-rw-r--r--tests/ui/dyn-star/check-size-at-cast-polymorphic-bad.stderr10
-rw-r--r--tests/ui/dyn-star/check-size-at-cast.rs2
-rw-r--r--tests/ui/dyn-star/check-size-at-cast.stderr6
-rw-r--r--tests/ui/dyn-star/upcast.stderr6
-rw-r--r--tests/ui/error-codes/E0523.rs14
-rw-r--r--tests/ui/error-codes/E0523.stderr13
-rw-r--r--tests/ui/errors/trait-bound-error-spans/blame-trait-error.rs28
-rw-r--r--tests/ui/errors/trait-bound-error-spans/blame-trait-error.stderr35
-rw-r--r--tests/ui/errors/traits/blame-trait-error-spans-on-exprs.rs131
-rw-r--r--tests/ui/errors/traits/blame-trait-error-spans-on-exprs.stderr380
-rw-r--r--tests/ui/fmt/respanned-literal-issue-106191.rs2
-rw-r--r--tests/ui/generic-associated-types/issue-68656-unsized-values.stderr4
-rw-r--r--tests/ui/generic-associated-types/missing-bounds.fixed6
-rw-r--r--tests/ui/generic-associated-types/missing-bounds.stderr12
-rw-r--r--tests/ui/impl-trait/issues/issue-86800.stderr4
-rw-r--r--tests/ui/issues/issue-51515.rs1
-rw-r--r--tests/ui/issues/issue-51515.stderr9
-rw-r--r--tests/ui/issues/issue-92741.fixed13
-rw-r--r--tests/ui/issues/issue-92741.rs17
-rw-r--r--tests/ui/issues/issue-92741.stderr49
-rw-r--r--tests/ui/layout/valid_range_oob.stderr2
-rw-r--r--tests/ui/lifetimes/issue-104432-unused-lifetimes-in-expansion.rs12
-rw-r--r--tests/ui/lifetimes/issue-107492-default-value-for-lifetime.rs6
-rw-r--r--tests/ui/lifetimes/issue-107492-default-value-for-lifetime.stderr8
-rw-r--r--tests/ui/lint/unused/issue-103320-must-use-ops.rs27
-rw-r--r--tests/ui/lint/unused/issue-103320-must-use-ops.stderr67
-rw-r--r--tests/ui/macros/stringify.rs6
-rw-r--r--tests/ui/malformed/issue-107423-unused-delim-only-one-no-pair.rs7
-rw-r--r--tests/ui/malformed/issue-107423-unused-delim-only-one-no-pair.stderr32
-rw-r--r--tests/ui/mir/issue-107678-projection-with-lifetime.rs20
-rw-r--r--tests/ui/mir/issue-107691.rs42
-rw-r--r--tests/ui/panics/default-backtrace-ice.stderr4
-rw-r--r--tests/ui/parser/bad-recover-kw-after-impl.rs15
-rw-r--r--tests/ui/parser/bad-recover-ty-after-impl.rs17
-rw-r--r--tests/ui/parser/missing-expression-in-for-loop.rs5
-rw-r--r--tests/ui/parser/missing-expression-in-for-loop.stderr13
-rw-r--r--tests/ui/parser/raw/too-many-hash.rs6
-rw-r--r--tests/ui/parser/raw/too-many-hash.stderr8
-rw-r--r--tests/ui/parser/recover-quantified-closure.rs2
-rw-r--r--tests/ui/parser/recover-quantified-closure.stderr4
-rw-r--r--tests/ui/print_type_sizes/async.stdout4
-rw-r--r--tests/ui/print_type_sizes/generator.stdout4
-rw-r--r--tests/ui/print_type_sizes/generator_discr_placement.stdout2
-rw-r--r--tests/ui/recursion/issue-83150.stderr4
-rw-r--r--tests/ui/rfc-2632-const-trait-impl/const-closure-parse-not-item.rs10
-rw-r--r--tests/ui/rfc-2632-const-trait-impl/const_derives/derive-const-with-params.rs13
-rw-r--r--tests/ui/suggest-null-ptr.fixed31
-rw-r--r--tests/ui/suggest-null-ptr.rs31
-rw-r--r--tests/ui/suggest-null-ptr.stderr83
-rw-r--r--tests/ui/suggestions/restrict-existing-type-bounds.rs30
-rw-r--r--tests/ui/suggestions/restrict-existing-type-bounds.stderr57
-rw-r--r--tests/ui/suggestions/suggest-fn-ptr-for-fn-item-in-fn-ret.fixed12
-rw-r--r--tests/ui/suggestions/suggest-fn-ptr-for-fn-item-in-fn-ret.rs12
-rw-r--r--tests/ui/suggestions/suggest-fn-ptr-for-fn-item-in-fn-ret.stderr12
-rw-r--r--tests/ui/suggestions/type-mismatch-byte-literal.rs12
-rw-r--r--tests/ui/suggestions/type-mismatch-byte-literal.stderr45
-rw-r--r--tests/ui/traits/negative-impls/negated-auto-traits-error.stderr4
-rw-r--r--tests/ui/traits/new-solver/pointer-like.rs14
-rw-r--r--tests/ui/traits/new-solver/pointer-like.stderr24
-rw-r--r--tests/ui/traits/new-solver/pointer-sized.rs12
-rw-r--r--tests/ui/traits/new-solver/pointer-sized.stderr24
-rw-r--r--tests/ui/traits/new-solver/provisional-result-done.rs37
-rw-r--r--tests/ui/traits/new-solver/provisional-result-done.stderr6
-rw-r--r--tests/ui/treat-err-as-bug/delay_span_bug.stderr2
-rw-r--r--tests/ui/treat-err-as-bug/err.stderr2
-rw-r--r--tests/ui/typeck/issue-107775.rs40
-rw-r--r--tests/ui/typeck/issue-107775.stderr16
-rw-r--r--tests/ui/typeck/issue-90027-async-fn-return-suggestion.rs21
-rw-r--r--tests/ui/typeck/issue-90027-async-fn-return-suggestion.stderr36
-rw-r--r--tests/ui/union/projection-as-union-type-error-2.rs20
-rw-r--r--tests/ui/union/projection-as-union-type-error-2.stderr17
-rw-r--r--tests/ui/union/projection-as-union-type-error.rs15
-rw-r--r--tests/ui/union/projection-as-union-type-error.stderr9
-rw-r--r--tests/ui/union/projection-as-union-type.rs19
-rw-r--r--tests/ui/unpretty/ast-const-trait-bound.rs4
-rw-r--r--tests/ui/unpretty/ast-const-trait-bound.stdout4
232 files changed, 2783 insertions, 936 deletions
diff --git a/tests/codegen/function-arguments-noopt.rs b/tests/codegen/function-arguments-noopt.rs
index ff76405a4ea..0c62e0d35e3 100644
--- a/tests/codegen/function-arguments-noopt.rs
+++ b/tests/codegen/function-arguments-noopt.rs
@@ -29,6 +29,12 @@ pub fn borrow(x: &i32) -> &i32 {
   x
 }
 
+// CHECK: align 4 {{i32\*|ptr}} @borrow_mut({{i32\*|ptr}} align 4 %x)
+#[no_mangle]
+pub fn borrow_mut(x: &mut i32) -> &mut i32 {
+  x
+}
+
 // CHECK-LABEL: @borrow_call
 #[no_mangle]
 pub fn borrow_call(x: &i32, f: fn(&i32) -> &i32) -> &i32 {
diff --git a/tests/codegen/function-arguments.rs b/tests/codegen/function-arguments.rs
index 1f979d7b90a..96dfde18683 100644
--- a/tests/codegen/function-arguments.rs
+++ b/tests/codegen/function-arguments.rs
@@ -85,6 +85,12 @@ pub fn option_nonzero_int(x: Option<NonZeroU64>) -> Option<NonZeroU64> {
 pub fn readonly_borrow(_: &i32) {
 }
 
+// CHECK: noundef align 4 dereferenceable(4) {{i32\*|ptr}} @readonly_borrow_ret()
+#[no_mangle]
+pub fn readonly_borrow_ret() -> &'static i32 {
+  loop {}
+}
+
 // CHECK: @static_borrow({{i32\*|ptr}} noalias noundef readonly align 4 dereferenceable(4) %_1)
 // static borrow may be captured
 #[no_mangle]
@@ -115,9 +121,17 @@ pub fn mutable_unsafe_borrow(_: &mut UnsafeInner) {
 pub fn mutable_borrow(_: &mut i32) {
 }
 
+// CHECK: noundef align 4 dereferenceable(4) {{i32\*|ptr}} @mutable_borrow_ret()
+#[no_mangle]
+pub fn mutable_borrow_ret() -> &'static mut i32 {
+  loop {}
+}
+
 #[no_mangle]
-// CHECK: @mutable_notunpin_borrow({{i32\*|ptr}} noundef align 4 dereferenceable(4) %_1)
+// CHECK: @mutable_notunpin_borrow({{i32\*|ptr}} noundef nonnull align 4 %_1)
 // This one is *not* `noalias` because it might be self-referential.
+// It is also not `dereferenceable` due to
+// <https://github.com/rust-lang/unsafe-code-guidelines/issues/381>.
 pub fn mutable_notunpin_borrow(_: &mut NotUnpin) {
 }
 
@@ -167,6 +181,12 @@ pub fn _box(x: Box<i32>) -> Box<i32> {
   x
 }
 
+// CHECK: noundef nonnull align 4 {{i32\*|ptr}} @notunpin_box({{i32\*|ptr}} noundef nonnull align 4 %x)
+#[no_mangle]
+pub fn notunpin_box(x: Box<NotUnpin>) -> Box<NotUnpin> {
+  x
+}
+
 // CHECK: @struct_return({{%S\*|ptr}} noalias nocapture noundef sret(%S) dereferenceable(32){{( %0)?}})
 #[no_mangle]
 pub fn struct_return() -> S {
@@ -233,12 +253,12 @@ pub fn trait_raw(_: *const dyn Drop) {
 
 // CHECK: @trait_box({{\{\}\*|ptr}} noalias noundef nonnull align 1{{( %0)?}}, {{.+}} noalias noundef readonly align {{.*}} dereferenceable({{.*}}){{( %1)?}})
 #[no_mangle]
-pub fn trait_box(_: Box<dyn Drop>) {
+pub fn trait_box(_: Box<dyn Drop + Unpin>) {
 }
 
 // CHECK: { {{i8\*|ptr}}, {{i8\*|ptr}} } @trait_option({{i8\*|ptr}} noalias noundef align 1 %x.0, {{i8\*|ptr}} %x.1)
 #[no_mangle]
-pub fn trait_option(x: Option<Box<dyn Drop>>) -> Option<Box<dyn Drop>> {
+pub fn trait_option(x: Option<Box<dyn Drop + Unpin>>) -> Option<Box<dyn Drop + Unpin>> {
   x
 }
 
diff --git a/tests/mir-opt/building/async_await.a-{closure#0}.generator_resume.0.mir b/tests/mir-opt/building/async_await.a-{closure#0}.generator_resume.0.mir
index 2a7f90fe947..accb504c088 100644
--- a/tests/mir-opt/building/async_await.a-{closure#0}.generator_resume.0.mir
+++ b/tests/mir-opt/building/async_await.a-{closure#0}.generator_resume.0.mir
@@ -24,9 +24,7 @@ fn a::{closure#0}(_1: Pin<&mut [async fn body@$DIR/async_await.rs:11:14: 11:16]>
     bb1: {
         _4 = move _2;                    // scope 0 at $DIR/async_await.rs:+0:14: +0:16
         _3 = const ();                   // scope 0 at $DIR/async_await.rs:+0:14: +0:16
-        Deinit(_0);                      // scope 0 at $DIR/async_await.rs:+0:16: +0:16
-        ((_0 as Ready).0: ()) = move _3; // scope 0 at $DIR/async_await.rs:+0:16: +0:16
-        discriminant(_0) = 0;            // scope 0 at $DIR/async_await.rs:+0:16: +0:16
+        _0 = Poll::<()>::Ready(move _3); // scope 0 at $DIR/async_await.rs:+0:16: +0:16
         discriminant((*(_1.0: &mut [async fn body@$DIR/async_await.rs:11:14: 11:16]))) = 1; // scope 0 at $DIR/async_await.rs:+0:16: +0:16
         return;                          // scope 0 at $DIR/async_await.rs:+0:16: +0:16
     }
diff --git a/tests/mir-opt/building/async_await.b-{closure#0}.generator_resume.0.mir b/tests/mir-opt/building/async_await.b-{closure#0}.generator_resume.0.mir
index 1449247aeda..ad4e5c6fcfd 100644
--- a/tests/mir-opt/building/async_await.b-{closure#0}.generator_resume.0.mir
+++ b/tests/mir-opt/building/async_await.b-{closure#0}.generator_resume.0.mir
@@ -167,8 +167,7 @@ fn b::{closure#0}(_1: Pin<&mut [async fn body@$DIR/async_await.rs:14:18: 17:2]>,
         StorageLive(_19);                // scope 1 at $DIR/async_await.rs:+1:8: +1:14
         StorageLive(_20);                // scope 1 at $DIR/async_await.rs:+1:8: +1:14
         _20 = ();                        // scope 1 at $DIR/async_await.rs:+1:8: +1:14
-        Deinit(_0);                      // scope 1 at $DIR/async_await.rs:+1:8: +1:14
-        discriminant(_0) = 1;            // scope 1 at $DIR/async_await.rs:+1:8: +1:14
+        _0 = Poll::<()>::Pending;        // scope 1 at $DIR/async_await.rs:+1:8: +1:14
         discriminant((*(_1.0: &mut [async fn body@$DIR/async_await.rs:14:18: 17:2]))) = 3; // scope 1 at $DIR/async_await.rs:+1:8: +1:14
         return;                          // scope 1 at $DIR/async_await.rs:+1:8: +1:14
     }
@@ -276,8 +275,7 @@ fn b::{closure#0}(_1: Pin<&mut [async fn body@$DIR/async_await.rs:14:18: 17:2]>,
         StorageLive(_35);                // scope 4 at $DIR/async_await.rs:+2:8: +2:14
         StorageLive(_36);                // scope 4 at $DIR/async_await.rs:+2:8: +2:14
         _36 = ();                        // scope 4 at $DIR/async_await.rs:+2:8: +2:14
-        Deinit(_0);                      // scope 4 at $DIR/async_await.rs:+2:8: +2:14
-        discriminant(_0) = 1;            // scope 4 at $DIR/async_await.rs:+2:8: +2:14
+        _0 = Poll::<()>::Pending;        // scope 4 at $DIR/async_await.rs:+2:8: +2:14
         discriminant((*(_1.0: &mut [async fn body@$DIR/async_await.rs:14:18: 17:2]))) = 4; // scope 4 at $DIR/async_await.rs:+2:8: +2:14
         return;                          // scope 4 at $DIR/async_await.rs:+2:8: +2:14
     }
@@ -317,9 +315,7 @@ fn b::{closure#0}(_1: Pin<&mut [async fn body@$DIR/async_await.rs:14:18: 17:2]>,
     }
 
     bb26: {
-        Deinit(_0);                      // scope 0 at $DIR/async_await.rs:+3:2: +3:2
-        ((_0 as Ready).0: ()) = move _37; // scope 0 at $DIR/async_await.rs:+3:2: +3:2
-        discriminant(_0) = 0;            // scope 0 at $DIR/async_await.rs:+3:2: +3:2
+        _0 = Poll::<()>::Ready(move _37); // scope 0 at $DIR/async_await.rs:+3:2: +3:2
         discriminant((*(_1.0: &mut [async fn body@$DIR/async_await.rs:14:18: 17:2]))) = 1; // scope 0 at $DIR/async_await.rs:+3:2: +3:2
         return;                          // scope 0 at $DIR/async_await.rs:+3:2: +3:2
     }
diff --git a/tests/mir-opt/combine_clone_of_primitives.{impl#0}-clone.InstCombine.diff b/tests/mir-opt/combine_clone_of_primitives.{impl#0}-clone.InstCombine.diff
index 6f01553eef6..20b0fb9643e 100644
--- a/tests/mir-opt/combine_clone_of_primitives.{impl#0}-clone.InstCombine.diff
+++ b/tests/mir-opt/combine_clone_of_primitives.{impl#0}-clone.InstCombine.diff
@@ -61,10 +61,7 @@
   
       bb3: {
           StorageDead(_9);                 // scope 0 at $DIR/combine_clone_of_primitives.rs:10:15: 10:16
-          Deinit(_0);                      // scope 0 at $DIR/combine_clone_of_primitives.rs:+0:10: +0:15
-          (_0.0: T) = move _2;             // scope 0 at $DIR/combine_clone_of_primitives.rs:+0:10: +0:15
-          (_0.1: u64) = move _5;           // scope 0 at $DIR/combine_clone_of_primitives.rs:+0:10: +0:15
-          (_0.2: [f32; 3]) = move _8;      // scope 0 at $DIR/combine_clone_of_primitives.rs:+0:10: +0:15
+          _0 = MyThing::<T> { v: move _2, i: move _5, a: move _8 }; // scope 0 at $DIR/combine_clone_of_primitives.rs:+0:10: +0:15
           StorageDead(_8);                 // scope 0 at $DIR/combine_clone_of_primitives.rs:+0:14: +0:15
           StorageDead(_5);                 // scope 0 at $DIR/combine_clone_of_primitives.rs:+0:14: +0:15
           StorageDead(_2);                 // scope 0 at $DIR/combine_clone_of_primitives.rs:+0:14: +0:15
diff --git a/tests/mir-opt/const_allocation.main.ConstProp.after.32bit.mir b/tests/mir-opt/const_allocation.main.ConstProp.after.32bit.mir
index 6140fc52f65..9b69f79c28e 100644
--- a/tests/mir-opt/const_allocation.main.ConstProp.after.32bit.mir
+++ b/tests/mir-opt/const_allocation.main.ConstProp.after.32bit.mir
@@ -26,17 +26,17 @@ alloc1 (static: FOO, size: 8, align: 4) {
 
 alloc18 (size: 48, align: 4) {
     0x00 │ 00 00 00 00 __ __ __ __ ╾─alloc5──╼ 00 00 00 00 │ ....░░░░╾──╼....
-    0x10 │ 00 00 00 00 __ __ __ __ ╾─alloc9──╼ 02 00 00 00 │ ....░░░░╾──╼....
-    0x20 │ 01 00 00 00 2a 00 00 00 ╾─alloc14─╼ 03 00 00 00 │ ....*...╾──╼....
+    0x10 │ 00 00 00 00 __ __ __ __ ╾─alloc8──╼ 02 00 00 00 │ ....░░░░╾──╼....
+    0x20 │ 01 00 00 00 2a 00 00 00 ╾─alloc13─╼ 03 00 00 00 │ ....*...╾──╼....
 }
 
 alloc5 (size: 0, align: 4) {}
 
-alloc9 (size: 16, align: 4) {
-    ╾─alloc8──╼ 03 00 00 00 ╾─alloc10─╼ 03 00 00 00 │ ╾──╼....╾──╼....
+alloc8 (size: 16, align: 4) {
+    ╾─alloc9──╼ 03 00 00 00 ╾─alloc10─╼ 03 00 00 00 │ ╾──╼....╾──╼....
 }
 
-alloc8 (size: 3, align: 1) {
+alloc9 (size: 3, align: 1) {
     66 6f 6f                                        │ foo
 }
 
@@ -44,12 +44,12 @@ alloc10 (size: 3, align: 1) {
     62 61 72                                        │ bar
 }
 
-alloc14 (size: 24, align: 4) {
-    0x00 │ ╾─alloc13─╼ 03 00 00 00 ╾─alloc15─╼ 03 00 00 00 │ ╾──╼....╾──╼....
+alloc13 (size: 24, align: 4) {
+    0x00 │ ╾─alloc14─╼ 03 00 00 00 ╾─alloc15─╼ 03 00 00 00 │ ╾──╼....╾──╼....
     0x10 │ ╾─alloc16─╼ 04 00 00 00                         │ ╾──╼....
 }
 
-alloc13 (size: 3, align: 1) {
+alloc14 (size: 3, align: 1) {
     6d 65 68                                        │ meh
 }
 
diff --git a/tests/mir-opt/const_allocation.main.ConstProp.after.64bit.mir b/tests/mir-opt/const_allocation.main.ConstProp.after.64bit.mir
index b2ed23c6873..d0f196e7245 100644
--- a/tests/mir-opt/const_allocation.main.ConstProp.after.64bit.mir
+++ b/tests/mir-opt/const_allocation.main.ConstProp.after.64bit.mir
@@ -27,19 +27,19 @@ alloc1 (static: FOO, size: 16, align: 8) {
 alloc18 (size: 72, align: 8) {
     0x00 │ 00 00 00 00 __ __ __ __ ╾───────alloc5────────╼ │ ....░░░░╾──────╼
     0x10 │ 00 00 00 00 00 00 00 00 00 00 00 00 __ __ __ __ │ ............░░░░
-    0x20 │ ╾───────alloc9────────╼ 02 00 00 00 00 00 00 00 │ ╾──────╼........
-    0x30 │ 01 00 00 00 2a 00 00 00 ╾───────alloc14───────╼ │ ....*...╾──────╼
+    0x20 │ ╾───────alloc8────────╼ 02 00 00 00 00 00 00 00 │ ╾──────╼........
+    0x30 │ 01 00 00 00 2a 00 00 00 ╾───────alloc13───────╼ │ ....*...╾──────╼
     0x40 │ 03 00 00 00 00 00 00 00                         │ ........
 }
 
 alloc5 (size: 0, align: 8) {}
 
-alloc9 (size: 32, align: 8) {
-    0x00 │ ╾───────alloc8────────╼ 03 00 00 00 00 00 00 00 │ ╾──────╼........
+alloc8 (size: 32, align: 8) {
+    0x00 │ ╾───────alloc9────────╼ 03 00 00 00 00 00 00 00 │ ╾──────╼........
     0x10 │ ╾───────alloc10───────╼ 03 00 00 00 00 00 00 00 │ ╾──────╼........
 }
 
-alloc8 (size: 3, align: 1) {
+alloc9 (size: 3, align: 1) {
     66 6f 6f                                        │ foo
 }
 
@@ -47,13 +47,13 @@ alloc10 (size: 3, align: 1) {
     62 61 72                                        │ bar
 }
 
-alloc14 (size: 48, align: 8) {
-    0x00 │ ╾───────alloc13───────╼ 03 00 00 00 00 00 00 00 │ ╾──────╼........
+alloc13 (size: 48, align: 8) {
+    0x00 │ ╾───────alloc14───────╼ 03 00 00 00 00 00 00 00 │ ╾──────╼........
     0x10 │ ╾───────alloc15───────╼ 03 00 00 00 00 00 00 00 │ ╾──────╼........
     0x20 │ ╾───────alloc16───────╼ 04 00 00 00 00 00 00 00 │ ╾──────╼........
 }
 
-alloc13 (size: 3, align: 1) {
+alloc14 (size: 3, align: 1) {
     6d 65 68                                        │ meh
 }
 
diff --git a/tests/mir-opt/const_debuginfo.main.ConstDebugInfo.diff b/tests/mir-opt/const_debuginfo.main.ConstDebugInfo.diff
index 4405b55875e..f1f53a48165 100644
--- a/tests/mir-opt/const_debuginfo.main.ConstDebugInfo.diff
+++ b/tests/mir-opt/const_debuginfo.main.ConstDebugInfo.diff
@@ -72,33 +72,16 @@
           StorageLive(_14);                // scope 5 at $DIR/const_debuginfo.rs:+8:9: +8:10
           StorageLive(_15);                // scope 5 at $DIR/const_debuginfo.rs:+8:9: +8:10
           StorageLive(_16);                // scope 5 at $DIR/const_debuginfo.rs:+8:9: +8:10
-          Deinit(_14);                     // scope 5 at $DIR/const_debuginfo.rs:+8:13: +8:34
-          Deinit(_15);                     // scope 5 at $DIR/const_debuginfo.rs:+8:13: +8:34
-          Deinit(_16);                     // scope 5 at $DIR/const_debuginfo.rs:+8:13: +8:34
           _14 = const true;                // scope 5 at $DIR/const_debuginfo.rs:+8:13: +8:34
           _15 = const false;               // scope 5 at $DIR/const_debuginfo.rs:+8:13: +8:34
           _16 = const 123_u32;             // scope 5 at $DIR/const_debuginfo.rs:+8:13: +8:34
           StorageLive(_10);                // scope 6 at $DIR/const_debuginfo.rs:+10:9: +10:10
-          Deinit(_10);                     // scope 6 at $DIR/const_debuginfo.rs:+10:13: +10:24
-          ((_10 as Some).0: u16) = const 99_u16; // scope 6 at $DIR/const_debuginfo.rs:+10:13: +10:24
-          discriminant(_10) = 1;           // scope 6 at $DIR/const_debuginfo.rs:+10:13: +10:24
-          StorageLive(_17);                // scope 7 at $DIR/const_debuginfo.rs:+12:9: +12:10
-          StorageLive(_18);                // scope 7 at $DIR/const_debuginfo.rs:+12:9: +12:10
-          Deinit(_17);                     // scope 7 at $DIR/const_debuginfo.rs:+12:13: +12:35
-          Deinit(_18);                     // scope 7 at $DIR/const_debuginfo.rs:+12:13: +12:35
+          _10 = Option::<u16>::Some(const 99_u16); // scope 6 at $DIR/const_debuginfo.rs:+10:13: +10:24
           _17 = const 32_u32;              // scope 7 at $DIR/const_debuginfo.rs:+12:13: +12:35
           _18 = const 32_u32;              // scope 7 at $DIR/const_debuginfo.rs:+12:13: +12:35
           StorageLive(_11);                // scope 8 at $DIR/const_debuginfo.rs:+13:9: +13:10
-          StorageLive(_12);                // scope 8 at $DIR/const_debuginfo.rs:+13:13: +13:16
-          _12 = const 32_u32;              // scope 8 at $DIR/const_debuginfo.rs:+13:13: +13:16
-          StorageLive(_13);                // scope 8 at $DIR/const_debuginfo.rs:+13:19: +13:22
-          _13 = const 32_u32;              // scope 8 at $DIR/const_debuginfo.rs:+13:19: +13:22
           _11 = const 64_u32;              // scope 8 at $DIR/const_debuginfo.rs:+13:13: +13:22
-          StorageDead(_13);                // scope 8 at $DIR/const_debuginfo.rs:+13:21: +13:22
-          StorageDead(_12);                // scope 8 at $DIR/const_debuginfo.rs:+13:21: +13:22
           StorageDead(_11);                // scope 8 at $DIR/const_debuginfo.rs:+14:1: +14:2
-          StorageDead(_17);                // scope 7 at $DIR/const_debuginfo.rs:+14:1: +14:2
-          StorageDead(_18);                // scope 7 at $DIR/const_debuginfo.rs:+14:1: +14:2
           StorageDead(_10);                // scope 6 at $DIR/const_debuginfo.rs:+14:1: +14:2
           StorageDead(_14);                // scope 5 at $DIR/const_debuginfo.rs:+14:1: +14:2
           StorageDead(_15);                // scope 5 at $DIR/const_debuginfo.rs:+14:1: +14:2
diff --git a/tests/mir-opt/const_goto_storage.match_nested_if.ConstGoto.diff b/tests/mir-opt/const_goto_storage.match_nested_if.ConstGoto.diff
index f5457725943..4dc98f85674 100644
--- a/tests/mir-opt/const_goto_storage.match_nested_if.ConstGoto.diff
+++ b/tests/mir-opt/const_goto_storage.match_nested_if.ConstGoto.diff
@@ -17,7 +17,7 @@
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/const_goto_storage.rs:+1:9: +1:12
 -         StorageLive(_2);                 // scope 0 at $DIR/const_goto_storage.rs:+1:21: +1:23
--         Deinit(_2);                      // scope 0 at $DIR/const_goto_storage.rs:+1:21: +1:23
+-         _2 = ();                         // scope 0 at $DIR/const_goto_storage.rs:+1:21: +1:23
 -         StorageLive(_3);                 // scope 0 at $DIR/const_goto_storage.rs:+2:15: +6:10
 -         StorageLive(_4);                 // scope 0 at $DIR/const_goto_storage.rs:+2:18: +2:76
 -         StorageLive(_5);                 // scope 0 at $DIR/const_goto_storage.rs:+2:21: +2:52
diff --git a/tests/mir-opt/const_prop/aggregate.foo.ConstProp.diff b/tests/mir-opt/const_prop/aggregate.foo.ConstProp.diff
new file mode 100644
index 00000000000..6ac460db86f
--- /dev/null
+++ b/tests/mir-opt/const_prop/aggregate.foo.ConstProp.diff
@@ -0,0 +1,55 @@
+- // MIR for `foo` before ConstProp
++ // MIR for `foo` after ConstProp
+  
+  fn foo(_1: u8) -> () {
+      debug x => _1;                       // in scope 0 at $DIR/aggregate.rs:+0:8: +0:9
+      let mut _0: ();                      // return place in scope 0 at $DIR/aggregate.rs:+0:15: +0:15
+      let _2: i32;                         // in scope 0 at $DIR/aggregate.rs:+2:9: +2:14
+      let mut _3: i32;                     // in scope 0 at $DIR/aggregate.rs:+2:17: +2:25
+      let mut _4: (i32, u8);               // in scope 0 at $DIR/aggregate.rs:+2:17: +2:23
+      let mut _5: u8;                      // in scope 0 at $DIR/aggregate.rs:+2:21: +2:22
+      let mut _7: i32;                     // in scope 0 at $DIR/aggregate.rs:+3:18: +3:26
+      let mut _8: (u8, i32);               // in scope 0 at $DIR/aggregate.rs:+3:18: +3:24
+      let mut _9: u8;                      // in scope 0 at $DIR/aggregate.rs:+3:19: +3:20
+      scope 1 {
+          debug first => _2;               // in scope 1 at $DIR/aggregate.rs:+2:9: +2:14
+          let _6: i32;                     // in scope 1 at $DIR/aggregate.rs:+3:9: +3:15
+          scope 2 {
+              debug second => _6;          // in scope 2 at $DIR/aggregate.rs:+3:9: +3:15
+          }
+      }
+  
+      bb0: {
+          StorageLive(_2);                 // scope 0 at $DIR/aggregate.rs:+2:9: +2:14
+          StorageLive(_3);                 // scope 0 at $DIR/aggregate.rs:+2:17: +2:25
+          StorageLive(_4);                 // scope 0 at $DIR/aggregate.rs:+2:17: +2:23
+          StorageLive(_5);                 // scope 0 at $DIR/aggregate.rs:+2:21: +2:22
+          _5 = _1;                         // scope 0 at $DIR/aggregate.rs:+2:21: +2:22
+          _4 = (const 0_i32, move _5);     // scope 0 at $DIR/aggregate.rs:+2:17: +2:23
+          StorageDead(_5);                 // scope 0 at $DIR/aggregate.rs:+2:22: +2:23
+-         _3 = (_4.0: i32);                // scope 0 at $DIR/aggregate.rs:+2:17: +2:25
+-         _2 = Add(move _3, const 1_i32);  // scope 0 at $DIR/aggregate.rs:+2:17: +2:29
++         _3 = const 0_i32;                // scope 0 at $DIR/aggregate.rs:+2:17: +2:25
++         _2 = const 1_i32;                // scope 0 at $DIR/aggregate.rs:+2:17: +2:29
+          StorageDead(_3);                 // scope 0 at $DIR/aggregate.rs:+2:28: +2:29
+          StorageDead(_4);                 // scope 0 at $DIR/aggregate.rs:+2:29: +2:30
+          StorageLive(_6);                 // scope 1 at $DIR/aggregate.rs:+3:9: +3:15
+          StorageLive(_7);                 // scope 1 at $DIR/aggregate.rs:+3:18: +3:26
+          StorageLive(_8);                 // scope 1 at $DIR/aggregate.rs:+3:18: +3:24
+          StorageLive(_9);                 // scope 1 at $DIR/aggregate.rs:+3:19: +3:20
+          _9 = _1;                         // scope 1 at $DIR/aggregate.rs:+3:19: +3:20
+          _8 = (move _9, const 1_i32);     // scope 1 at $DIR/aggregate.rs:+3:18: +3:24
+          StorageDead(_9);                 // scope 1 at $DIR/aggregate.rs:+3:23: +3:24
+-         _7 = (_8.1: i32);                // scope 1 at $DIR/aggregate.rs:+3:18: +3:26
+-         _6 = Add(move _7, const 2_i32);  // scope 1 at $DIR/aggregate.rs:+3:18: +3:30
++         _7 = const 1_i32;                // scope 1 at $DIR/aggregate.rs:+3:18: +3:26
++         _6 = const 3_i32;                // scope 1 at $DIR/aggregate.rs:+3:18: +3:30
+          StorageDead(_7);                 // scope 1 at $DIR/aggregate.rs:+3:29: +3:30
+          StorageDead(_8);                 // scope 1 at $DIR/aggregate.rs:+3:30: +3:31
+          _0 = const ();                   // scope 0 at $DIR/aggregate.rs:+0:15: +4:2
+          StorageDead(_6);                 // scope 1 at $DIR/aggregate.rs:+4:1: +4:2
+          StorageDead(_2);                 // scope 0 at $DIR/aggregate.rs:+4:1: +4:2
+          return;                          // scope 0 at $DIR/aggregate.rs:+4:2: +4:2
+      }
+  }
+  
diff --git a/tests/mir-opt/const_prop/aggregate.foo.PreCodegen.after.mir b/tests/mir-opt/const_prop/aggregate.foo.PreCodegen.after.mir
new file mode 100644
index 00000000000..2ef6d74e528
--- /dev/null
+++ b/tests/mir-opt/const_prop/aggregate.foo.PreCodegen.after.mir
@@ -0,0 +1,49 @@
+// MIR for `foo` after PreCodegen
+
+fn foo(_1: u8) -> () {
+    debug x => _1;                       // in scope 0 at $DIR/aggregate.rs:+0:8: +0:9
+    let mut _0: ();                      // return place in scope 0 at $DIR/aggregate.rs:+0:15: +0:15
+    let _2: i32;                         // in scope 0 at $DIR/aggregate.rs:+2:9: +2:14
+    let mut _3: i32;                     // in scope 0 at $DIR/aggregate.rs:+2:17: +2:25
+    let mut _4: (i32, u8);               // in scope 0 at $DIR/aggregate.rs:+2:17: +2:23
+    let mut _5: u8;                      // in scope 0 at $DIR/aggregate.rs:+2:21: +2:22
+    let mut _7: i32;                     // in scope 0 at $DIR/aggregate.rs:+3:18: +3:26
+    let mut _8: (u8, i32);               // in scope 0 at $DIR/aggregate.rs:+3:18: +3:24
+    let mut _9: u8;                      // in scope 0 at $DIR/aggregate.rs:+3:19: +3:20
+    scope 1 {
+        debug first => _2;               // in scope 1 at $DIR/aggregate.rs:+2:9: +2:14
+        let _6: i32;                     // in scope 1 at $DIR/aggregate.rs:+3:9: +3:15
+        scope 2 {
+            debug second => _6;          // in scope 2 at $DIR/aggregate.rs:+3:9: +3:15
+        }
+    }
+
+    bb0: {
+        StorageLive(_2);                 // scope 0 at $DIR/aggregate.rs:+2:9: +2:14
+        StorageLive(_3);                 // scope 0 at $DIR/aggregate.rs:+2:17: +2:25
+        StorageLive(_4);                 // scope 0 at $DIR/aggregate.rs:+2:17: +2:23
+        StorageLive(_5);                 // scope 0 at $DIR/aggregate.rs:+2:21: +2:22
+        _5 = _1;                         // scope 0 at $DIR/aggregate.rs:+2:21: +2:22
+        _4 = (const 0_i32, move _5);     // scope 0 at $DIR/aggregate.rs:+2:17: +2:23
+        StorageDead(_5);                 // scope 0 at $DIR/aggregate.rs:+2:22: +2:23
+        _3 = const 0_i32;                // scope 0 at $DIR/aggregate.rs:+2:17: +2:25
+        _2 = const 1_i32;                // scope 0 at $DIR/aggregate.rs:+2:17: +2:29
+        StorageDead(_3);                 // scope 0 at $DIR/aggregate.rs:+2:28: +2:29
+        StorageDead(_4);                 // scope 0 at $DIR/aggregate.rs:+2:29: +2:30
+        StorageLive(_6);                 // scope 1 at $DIR/aggregate.rs:+3:9: +3:15
+        StorageLive(_7);                 // scope 1 at $DIR/aggregate.rs:+3:18: +3:26
+        StorageLive(_8);                 // scope 1 at $DIR/aggregate.rs:+3:18: +3:24
+        StorageLive(_9);                 // scope 1 at $DIR/aggregate.rs:+3:19: +3:20
+        _9 = _1;                         // scope 1 at $DIR/aggregate.rs:+3:19: +3:20
+        _8 = (move _9, const 1_i32);     // scope 1 at $DIR/aggregate.rs:+3:18: +3:24
+        StorageDead(_9);                 // scope 1 at $DIR/aggregate.rs:+3:23: +3:24
+        _7 = const 1_i32;                // scope 1 at $DIR/aggregate.rs:+3:18: +3:26
+        _6 = const 3_i32;                // scope 1 at $DIR/aggregate.rs:+3:18: +3:30
+        StorageDead(_7);                 // scope 1 at $DIR/aggregate.rs:+3:29: +3:30
+        StorageDead(_8);                 // scope 1 at $DIR/aggregate.rs:+3:30: +3:31
+        _0 = const ();                   // scope 0 at $DIR/aggregate.rs:+0:15: +4:2
+        StorageDead(_6);                 // scope 1 at $DIR/aggregate.rs:+4:1: +4:2
+        StorageDead(_2);                 // scope 0 at $DIR/aggregate.rs:+4:1: +4:2
+        return;                          // scope 0 at $DIR/aggregate.rs:+4:2: +4:2
+    }
+}
diff --git a/tests/mir-opt/const_prop/aggregate.main.ConstProp.diff b/tests/mir-opt/const_prop/aggregate.main.ConstProp.diff
index 04378dbf374..f6e58955b4f 100644
--- a/tests/mir-opt/const_prop/aggregate.main.ConstProp.diff
+++ b/tests/mir-opt/const_prop/aggregate.main.ConstProp.diff
@@ -3,9 +3,11 @@
   
   fn main() -> () {
       let mut _0: ();                      // return place in scope 0 at $DIR/aggregate.rs:+0:11: +0:11
-      let _1: i32;                         // in scope 0 at $DIR/aggregate.rs:+1:9: +1:10
-      let mut _2: i32;                     // in scope 0 at $DIR/aggregate.rs:+1:13: +1:24
-      let mut _3: (i32, i32, i32);         // in scope 0 at $DIR/aggregate.rs:+1:13: +1:22
+      let _1: u8;                          // in scope 0 at $DIR/aggregate.rs:+1:9: +1:10
+      let mut _2: u8;                      // in scope 0 at $DIR/aggregate.rs:+1:13: +1:24
+      let mut _3: (i32, u8, i32);          // in scope 0 at $DIR/aggregate.rs:+1:13: +1:22
+      let _4: ();                          // in scope 0 at $DIR/aggregate.rs:+2:5: +2:11
+      let mut _5: u8;                      // in scope 0 at $DIR/aggregate.rs:+2:9: +2:10
       scope 1 {
           debug x => _1;                   // in scope 1 at $DIR/aggregate.rs:+1:9: +1:10
       }
@@ -14,19 +16,29 @@
           StorageLive(_1);                 // scope 0 at $DIR/aggregate.rs:+1:9: +1:10
           StorageLive(_2);                 // scope 0 at $DIR/aggregate.rs:+1:13: +1:24
           StorageLive(_3);                 // scope 0 at $DIR/aggregate.rs:+1:13: +1:22
-          Deinit(_3);                      // scope 0 at $DIR/aggregate.rs:+1:13: +1:22
-          (_3.0: i32) = const 0_i32;       // scope 0 at $DIR/aggregate.rs:+1:13: +1:22
-          (_3.1: i32) = const 1_i32;       // scope 0 at $DIR/aggregate.rs:+1:13: +1:22
-          (_3.2: i32) = const 2_i32;       // scope 0 at $DIR/aggregate.rs:+1:13: +1:22
--         _2 = (_3.1: i32);                // scope 0 at $DIR/aggregate.rs:+1:13: +1:24
--         _1 = Add(move _2, const 0_i32);  // scope 0 at $DIR/aggregate.rs:+1:13: +1:28
-+         _2 = const 1_i32;                // scope 0 at $DIR/aggregate.rs:+1:13: +1:24
-+         _1 = const 1_i32;                // scope 0 at $DIR/aggregate.rs:+1:13: +1:28
+          _3 = (const 0_i32, const 1_u8, const 2_i32); // scope 0 at $DIR/aggregate.rs:+1:13: +1:22
+-         _2 = (_3.1: u8);                 // scope 0 at $DIR/aggregate.rs:+1:13: +1:24
+-         _1 = Add(move _2, const 0_u8);   // scope 0 at $DIR/aggregate.rs:+1:13: +1:28
++         _2 = const 1_u8;                 // scope 0 at $DIR/aggregate.rs:+1:13: +1:24
++         _1 = const 1_u8;                 // scope 0 at $DIR/aggregate.rs:+1:13: +1:28
           StorageDead(_2);                 // scope 0 at $DIR/aggregate.rs:+1:27: +1:28
           StorageDead(_3);                 // scope 0 at $DIR/aggregate.rs:+1:28: +1:29
-          _0 = const ();                   // scope 0 at $DIR/aggregate.rs:+0:11: +2:2
-          StorageDead(_1);                 // scope 0 at $DIR/aggregate.rs:+2:1: +2:2
-          return;                          // scope 0 at $DIR/aggregate.rs:+2:2: +2:2
+          StorageLive(_4);                 // scope 1 at $DIR/aggregate.rs:+2:5: +2:11
+          StorageLive(_5);                 // scope 1 at $DIR/aggregate.rs:+2:9: +2:10
+-         _5 = _1;                         // scope 1 at $DIR/aggregate.rs:+2:9: +2:10
++         _5 = const 1_u8;                 // scope 1 at $DIR/aggregate.rs:+2:9: +2:10
+          _4 = foo(move _5) -> bb1;        // scope 1 at $DIR/aggregate.rs:+2:5: +2:11
+                                           // mir::Constant
+                                           // + span: $DIR/aggregate.rs:8:5: 8:8
+                                           // + literal: Const { ty: fn(u8) {foo}, val: Value(<ZST>) }
+      }
+  
+      bb1: {
+          StorageDead(_5);                 // scope 1 at $DIR/aggregate.rs:+2:10: +2:11
+          StorageDead(_4);                 // scope 1 at $DIR/aggregate.rs:+2:11: +2:12
+          _0 = const ();                   // scope 0 at $DIR/aggregate.rs:+0:11: +3:2
+          StorageDead(_1);                 // scope 0 at $DIR/aggregate.rs:+3:1: +3:2
+          return;                          // scope 0 at $DIR/aggregate.rs:+3:2: +3:2
       }
   }
   
diff --git a/tests/mir-opt/const_prop/aggregate.main.PreCodegen.after.mir b/tests/mir-opt/const_prop/aggregate.main.PreCodegen.after.mir
index cfc9a72e3b2..4706af92cba 100644
--- a/tests/mir-opt/const_prop/aggregate.main.PreCodegen.after.mir
+++ b/tests/mir-opt/const_prop/aggregate.main.PreCodegen.after.mir
@@ -2,9 +2,11 @@
 
 fn main() -> () {
     let mut _0: ();                      // return place in scope 0 at $DIR/aggregate.rs:+0:11: +0:11
-    let _1: i32;                         // in scope 0 at $DIR/aggregate.rs:+1:9: +1:10
-    let mut _2: i32;                     // in scope 0 at $DIR/aggregate.rs:+1:13: +1:24
-    let mut _3: (i32, i32, i32);         // in scope 0 at $DIR/aggregate.rs:+1:13: +1:22
+    let _1: u8;                          // in scope 0 at $DIR/aggregate.rs:+1:9: +1:10
+    let mut _2: u8;                      // in scope 0 at $DIR/aggregate.rs:+1:13: +1:24
+    let mut _3: (i32, u8, i32);          // in scope 0 at $DIR/aggregate.rs:+1:13: +1:22
+    let _4: ();                          // in scope 0 at $DIR/aggregate.rs:+2:5: +2:11
+    let mut _5: u8;                      // in scope 0 at $DIR/aggregate.rs:+2:9: +2:10
     scope 1 {
         debug x => _1;                   // in scope 1 at $DIR/aggregate.rs:+1:9: +1:10
     }
@@ -13,16 +15,25 @@ fn main() -> () {
         StorageLive(_1);                 // scope 0 at $DIR/aggregate.rs:+1:9: +1:10
         StorageLive(_2);                 // scope 0 at $DIR/aggregate.rs:+1:13: +1:24
         StorageLive(_3);                 // scope 0 at $DIR/aggregate.rs:+1:13: +1:22
-        Deinit(_3);                      // scope 0 at $DIR/aggregate.rs:+1:13: +1:22
-        (_3.0: i32) = const 0_i32;       // scope 0 at $DIR/aggregate.rs:+1:13: +1:22
-        (_3.1: i32) = const 1_i32;       // scope 0 at $DIR/aggregate.rs:+1:13: +1:22
-        (_3.2: i32) = const 2_i32;       // scope 0 at $DIR/aggregate.rs:+1:13: +1:22
-        _2 = const 1_i32;                // scope 0 at $DIR/aggregate.rs:+1:13: +1:24
-        _1 = const 1_i32;                // scope 0 at $DIR/aggregate.rs:+1:13: +1:28
+        _3 = (const 0_i32, const 1_u8, const 2_i32); // scope 0 at $DIR/aggregate.rs:+1:13: +1:22
+        _2 = const 1_u8;                 // scope 0 at $DIR/aggregate.rs:+1:13: +1:24
+        _1 = const 1_u8;                 // scope 0 at $DIR/aggregate.rs:+1:13: +1:28
         StorageDead(_2);                 // scope 0 at $DIR/aggregate.rs:+1:27: +1:28
         StorageDead(_3);                 // scope 0 at $DIR/aggregate.rs:+1:28: +1:29
-        _0 = const ();                   // scope 0 at $DIR/aggregate.rs:+0:11: +2:2
-        StorageDead(_1);                 // scope 0 at $DIR/aggregate.rs:+2:1: +2:2
-        return;                          // scope 0 at $DIR/aggregate.rs:+2:2: +2:2
+        StorageLive(_4);                 // scope 1 at $DIR/aggregate.rs:+2:5: +2:11
+        StorageLive(_5);                 // scope 1 at $DIR/aggregate.rs:+2:9: +2:10
+        _5 = const 1_u8;                 // scope 1 at $DIR/aggregate.rs:+2:9: +2:10
+        _4 = foo(move _5) -> bb1;        // scope 1 at $DIR/aggregate.rs:+2:5: +2:11
+                                         // mir::Constant
+                                         // + span: $DIR/aggregate.rs:8:5: 8:8
+                                         // + literal: Const { ty: fn(u8) {foo}, val: Value(<ZST>) }
+    }
+
+    bb1: {
+        StorageDead(_5);                 // scope 1 at $DIR/aggregate.rs:+2:10: +2:11
+        StorageDead(_4);                 // scope 1 at $DIR/aggregate.rs:+2:11: +2:12
+        _0 = const ();                   // scope 0 at $DIR/aggregate.rs:+0:11: +3:2
+        StorageDead(_1);                 // scope 0 at $DIR/aggregate.rs:+3:1: +3:2
+        return;                          // scope 0 at $DIR/aggregate.rs:+3:2: +3:2
     }
 }
diff --git a/tests/mir-opt/const_prop/aggregate.rs b/tests/mir-opt/const_prop/aggregate.rs
index 6a3080384da..aa123b7a866 100644
--- a/tests/mir-opt/const_prop/aggregate.rs
+++ b/tests/mir-opt/const_prop/aggregate.rs
@@ -5,4 +5,13 @@
 // EMIT_MIR aggregate.main.PreCodegen.after.mir
 fn main() {
     let x = (0, 1, 2).1 + 0;
+    foo(x);
+}
+
+// EMIT_MIR aggregate.foo.ConstProp.diff
+// EMIT_MIR aggregate.foo.PreCodegen.after.mir
+fn foo(x: u8) {
+    // Verify that we still propagate if part of the aggregate is not known.
+    let first = (0, x).0 + 1;
+    let second = (x, 1).1 + 2;
 }
diff --git a/tests/mir-opt/const_prop/discriminant.main.ConstProp.32bit.diff b/tests/mir-opt/const_prop/discriminant.main.ConstProp.32bit.diff
index b4dccecc672..b9a10704be0 100644
--- a/tests/mir-opt/const_prop/discriminant.main.ConstProp.32bit.diff
+++ b/tests/mir-opt/const_prop/discriminant.main.ConstProp.32bit.diff
@@ -17,17 +17,20 @@
           StorageLive(_1);                 // scope 0 at $DIR/discriminant.rs:+1:9: +1:10
           StorageLive(_2);                 // scope 0 at $DIR/discriminant.rs:+1:13: +1:64
           StorageLive(_3);                 // scope 2 at $DIR/discriminant.rs:+1:34: +1:44
-          Deinit(_3);                      // scope 2 at $DIR/discriminant.rs:+1:34: +1:44
-          ((_3 as Some).0: bool) = const true; // scope 2 at $DIR/discriminant.rs:+1:34: +1:44
-          discriminant(_3) = 1;            // scope 2 at $DIR/discriminant.rs:+1:34: +1:44
+-         _3 = Option::<bool>::Some(const true); // scope 2 at $DIR/discriminant.rs:+1:34: +1:44
 -         _4 = discriminant(_3);           // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
 -         switchInt(move _4) -> [1: bb1, otherwise: bb3]; // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
++         _3 = const Option::<bool>::Some(true); // scope 2 at $DIR/discriminant.rs:+1:34: +1:44
++                                          // mir::Constant
++                                          // + span: $DIR/discriminant.rs:12:34: 12:44
++                                          // + literal: Const { ty: Option<bool>, val: Value(Scalar(0x01)) }
 +         _4 = const 1_isize;              // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
 +         switchInt(const 1_isize) -> [1: bb1, otherwise: bb3]; // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
       }
   
       bb1: {
-          switchInt(((_3 as Some).0: bool)) -> [0: bb3, otherwise: bb2]; // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
+-         switchInt(((_3 as Some).0: bool)) -> [0: bb3, otherwise: bb2]; // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
++         switchInt(const true) -> [0: bb3, otherwise: bb2]; // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
       }
   
       bb2: {
diff --git a/tests/mir-opt/const_prop/discriminant.main.ConstProp.64bit.diff b/tests/mir-opt/const_prop/discriminant.main.ConstProp.64bit.diff
index b4dccecc672..b9a10704be0 100644
--- a/tests/mir-opt/const_prop/discriminant.main.ConstProp.64bit.diff
+++ b/tests/mir-opt/const_prop/discriminant.main.ConstProp.64bit.diff
@@ -17,17 +17,20 @@
           StorageLive(_1);                 // scope 0 at $DIR/discriminant.rs:+1:9: +1:10
           StorageLive(_2);                 // scope 0 at $DIR/discriminant.rs:+1:13: +1:64
           StorageLive(_3);                 // scope 2 at $DIR/discriminant.rs:+1:34: +1:44
-          Deinit(_3);                      // scope 2 at $DIR/discriminant.rs:+1:34: +1:44
-          ((_3 as Some).0: bool) = const true; // scope 2 at $DIR/discriminant.rs:+1:34: +1:44
-          discriminant(_3) = 1;            // scope 2 at $DIR/discriminant.rs:+1:34: +1:44
+-         _3 = Option::<bool>::Some(const true); // scope 2 at $DIR/discriminant.rs:+1:34: +1:44
 -         _4 = discriminant(_3);           // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
 -         switchInt(move _4) -> [1: bb1, otherwise: bb3]; // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
++         _3 = const Option::<bool>::Some(true); // scope 2 at $DIR/discriminant.rs:+1:34: +1:44
++                                          // mir::Constant
++                                          // + span: $DIR/discriminant.rs:12:34: 12:44
++                                          // + literal: Const { ty: Option<bool>, val: Value(Scalar(0x01)) }
 +         _4 = const 1_isize;              // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
 +         switchInt(const 1_isize) -> [1: bb1, otherwise: bb3]; // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
       }
   
       bb1: {
-          switchInt(((_3 as Some).0: bool)) -> [0: bb3, otherwise: bb2]; // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
+-         switchInt(((_3 as Some).0: bool)) -> [0: bb3, otherwise: bb2]; // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
++         switchInt(const true) -> [0: bb3, otherwise: bb2]; // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
       }
   
       bb2: {
diff --git a/tests/mir-opt/const_prop/invalid_constant.main.ConstProp.diff b/tests/mir-opt/const_prop/invalid_constant.main.ConstProp.diff
index 6c4757c1a81..4f056dd85e3 100644
--- a/tests/mir-opt/const_prop/invalid_constant.main.ConstProp.diff
+++ b/tests/mir-opt/const_prop/invalid_constant.main.ConstProp.diff
@@ -32,16 +32,14 @@
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/invalid_constant.rs:+6:9: +6:22
           StorageLive(_2);                 // scope 2 at $DIR/invalid_constant.rs:+6:34: +6:63
-          Deinit(_2);                      // scope 2 at $DIR/invalid_constant.rs:+6:34: +6:63
-          (_2.0: u32) = const 1114113_u32; // scope 2 at $DIR/invalid_constant.rs:+6:34: +6:63
+          _2 = InvalidChar { int: const 1114113_u32 }; // scope 2 at $DIR/invalid_constant.rs:+6:34: +6:63
 -         _1 = (_2.1: char);               // scope 2 at $DIR/invalid_constant.rs:+6:34: +6:67
 +         _1 = const {transmute(0x00110001): char}; // scope 2 at $DIR/invalid_constant.rs:+6:34: +6:67
           StorageDead(_2);                 // scope 0 at $DIR/invalid_constant.rs:+6:69: +6:70
           StorageLive(_3);                 // scope 1 at $DIR/invalid_constant.rs:+13:9: +13:21
           StorageLive(_4);                 // scope 1 at $DIR/invalid_constant.rs:+13:25: +13:59
           StorageLive(_5);                 // scope 4 at $DIR/invalid_constant.rs:+13:34: +13:55
-          Deinit(_5);                      // scope 4 at $DIR/invalid_constant.rs:+13:34: +13:55
-          (_5.0: u32) = const 4_u32;       // scope 4 at $DIR/invalid_constant.rs:+13:34: +13:55
+          _5 = InvalidTag { int: const 4_u32 }; // scope 4 at $DIR/invalid_constant.rs:+13:34: +13:55
 -         _4 = (_5.1: E);                  // scope 4 at $DIR/invalid_constant.rs:+13:34: +13:57
 -         _3 = [move _4];                  // scope 1 at $DIR/invalid_constant.rs:+13:24: +13:60
 +         _4 = const Scalar(0x00000004): E; // scope 4 at $DIR/invalid_constant.rs:+13:34: +13:57
diff --git a/tests/mir-opt/const_prop/issue_66971.main.ConstProp.diff b/tests/mir-opt/const_prop/issue_66971.main.ConstProp.diff
index 488e772d0ea..964dd308074 100644
--- a/tests/mir-opt/const_prop/issue_66971.main.ConstProp.diff
+++ b/tests/mir-opt/const_prop/issue_66971.main.ConstProp.diff
@@ -5,13 +5,14 @@
       let mut _0: ();                      // return place in scope 0 at $DIR/issue_66971.rs:+0:11: +0:11
       let _1: ();                          // in scope 0 at $DIR/issue_66971.rs:+1:5: +1:23
       let mut _2: ((), u8, u8);            // in scope 0 at $DIR/issue_66971.rs:+1:12: +1:22
+      let mut _3: ();                      // in scope 0 at $DIR/issue_66971.rs:+1:13: +1:15
   
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/issue_66971.rs:+1:5: +1:23
           StorageLive(_2);                 // scope 0 at $DIR/issue_66971.rs:+1:12: +1:22
-          Deinit(_2);                      // scope 0 at $DIR/issue_66971.rs:+1:12: +1:22
-          (_2.1: u8) = const 0_u8;         // scope 0 at $DIR/issue_66971.rs:+1:12: +1:22
-          (_2.2: u8) = const 0_u8;         // scope 0 at $DIR/issue_66971.rs:+1:12: +1:22
+          StorageLive(_3);                 // scope 0 at $DIR/issue_66971.rs:+1:13: +1:15
+          _2 = (move _3, const 0_u8, const 0_u8); // scope 0 at $DIR/issue_66971.rs:+1:12: +1:22
+          StorageDead(_3);                 // scope 0 at $DIR/issue_66971.rs:+1:21: +1:22
           _1 = encode(move _2) -> bb1;     // scope 0 at $DIR/issue_66971.rs:+1:5: +1:23
                                            // mir::Constant
                                            // + span: $DIR/issue_66971.rs:17:5: 17:11
diff --git a/tests/mir-opt/const_prop/issue_67019.main.ConstProp.diff b/tests/mir-opt/const_prop/issue_67019.main.ConstProp.diff
index cd53048597b..a631cb31090 100644
--- a/tests/mir-opt/const_prop/issue_67019.main.ConstProp.diff
+++ b/tests/mir-opt/const_prop/issue_67019.main.ConstProp.diff
@@ -11,12 +11,9 @@
           StorageLive(_1);                 // scope 0 at $DIR/issue_67019.rs:+1:5: +1:20
           StorageLive(_2);                 // scope 0 at $DIR/issue_67019.rs:+1:10: +1:19
           StorageLive(_3);                 // scope 0 at $DIR/issue_67019.rs:+1:11: +1:17
-          Deinit(_3);                      // scope 0 at $DIR/issue_67019.rs:+1:11: +1:17
-          (_3.0: u8) = const 1_u8;         // scope 0 at $DIR/issue_67019.rs:+1:11: +1:17
-          (_3.1: u8) = const 2_u8;         // scope 0 at $DIR/issue_67019.rs:+1:11: +1:17
-          Deinit(_2);                      // scope 0 at $DIR/issue_67019.rs:+1:10: +1:19
--         (_2.0: (u8, u8)) = move _3;      // scope 0 at $DIR/issue_67019.rs:+1:10: +1:19
-+         (_2.0: (u8, u8)) = const (1_u8, 2_u8); // scope 0 at $DIR/issue_67019.rs:+1:10: +1:19
+-         _3 = (const 1_u8, const 2_u8);   // scope 0 at $DIR/issue_67019.rs:+1:11: +1:17
++         _3 = const (1_u8, 2_u8);         // scope 0 at $DIR/issue_67019.rs:+1:11: +1:17
+          _2 = (move _3,);                 // scope 0 at $DIR/issue_67019.rs:+1:10: +1:19
           StorageDead(_3);                 // scope 0 at $DIR/issue_67019.rs:+1:18: +1:19
           _1 = test(move _2) -> bb1;       // scope 0 at $DIR/issue_67019.rs:+1:5: +1:20
                                            // mir::Constant
diff --git a/tests/mir-opt/const_prop/mutable_variable_aggregate.main.ConstProp.diff b/tests/mir-opt/const_prop/mutable_variable_aggregate.main.ConstProp.diff
index f6bf522065b..d088c4f662b 100644
--- a/tests/mir-opt/const_prop/mutable_variable_aggregate.main.ConstProp.diff
+++ b/tests/mir-opt/const_prop/mutable_variable_aggregate.main.ConstProp.diff
@@ -3,26 +3,27 @@
   
   fn main() -> () {
       let mut _0: ();                      // return place in scope 0 at $DIR/mutable_variable_aggregate.rs:+0:11: +0:11
-      let mut _1: (i32, i32);              // in scope 0 at $DIR/mutable_variable_aggregate.rs:+1:9: +1:14
+      let mut _3: i32;                     // in scope 0 at $DIR/mutable_variable_aggregate.rs:+1:9: +1:14
+      let mut _4: i32;                     // in scope 0 at $DIR/mutable_variable_aggregate.rs:+1:9: +1:14
       scope 1 {
-          debug x => _1;                   // in scope 1 at $DIR/mutable_variable_aggregate.rs:+1:9: +1:14
-          let _2: (i32, i32);              // in scope 1 at $DIR/mutable_variable_aggregate.rs:+3:9: +3:10
+          debug x => (i32, i32){ .0 => _3, .1 => _4, }; // in scope 1 at $DIR/mutable_variable_aggregate.rs:+1:9: +1:14
+          let _1: i32;                     // in scope 1 at $DIR/mutable_variable_aggregate.rs:+3:9: +3:10
+          let _2: i32;                     // in scope 1 at $DIR/mutable_variable_aggregate.rs:+3:9: +3:10
           scope 2 {
-              debug y => _2;               // in scope 2 at $DIR/mutable_variable_aggregate.rs:+3:9: +3:10
+              debug y => (i32, i32){ .0 => _3, .1 => _2, }; // in scope 2 at $DIR/mutable_variable_aggregate.rs:+3:9: +3:10
           }
       }
   
       bb0: {
-          StorageLive(_1);                 // scope 0 at $DIR/mutable_variable_aggregate.rs:+1:9: +1:14
-          Deinit(_1);                      // scope 0 at $DIR/mutable_variable_aggregate.rs:+1:17: +1:25
-          (_1.0: i32) = const 42_i32;      // scope 0 at $DIR/mutable_variable_aggregate.rs:+1:17: +1:25
-          (_1.1: i32) = const 43_i32;      // scope 0 at $DIR/mutable_variable_aggregate.rs:+1:17: +1:25
-          (_1.1: i32) = const 99_i32;      // scope 1 at $DIR/mutable_variable_aggregate.rs:+2:5: +2:13
+          StorageLive(_4);                 // scope 0 at $DIR/mutable_variable_aggregate.rs:+1:9: +1:14
+          _3 = const 42_i32;               // scope 0 at $DIR/mutable_variable_aggregate.rs:+1:17: +1:25
+          _4 = const 43_i32;               // scope 0 at $DIR/mutable_variable_aggregate.rs:+1:17: +1:25
+          _4 = const 99_i32;               // scope 1 at $DIR/mutable_variable_aggregate.rs:+2:5: +2:13
           StorageLive(_2);                 // scope 1 at $DIR/mutable_variable_aggregate.rs:+3:9: +3:10
--         _2 = _1;                         // scope 1 at $DIR/mutable_variable_aggregate.rs:+3:13: +3:14
-+         _2 = const (42_i32, 99_i32);     // scope 1 at $DIR/mutable_variable_aggregate.rs:+3:13: +3:14
+-         _2 = _4;                         // scope 1 at $DIR/mutable_variable_aggregate.rs:+3:13: +3:14
++         _2 = const 99_i32;               // scope 1 at $DIR/mutable_variable_aggregate.rs:+3:13: +3:14
           StorageDead(_2);                 // scope 1 at $DIR/mutable_variable_aggregate.rs:+4:1: +4:2
-          StorageDead(_1);                 // scope 0 at $DIR/mutable_variable_aggregate.rs:+4:1: +4:2
+          StorageDead(_4);                 // scope 0 at $DIR/mutable_variable_aggregate.rs:+4:1: +4:2
           return;                          // scope 0 at $DIR/mutable_variable_aggregate.rs:+4:2: +4:2
       }
   }
diff --git a/tests/mir-opt/const_prop/mutable_variable_aggregate_mut_ref.main.ConstProp.diff b/tests/mir-opt/const_prop/mutable_variable_aggregate_mut_ref.main.ConstProp.diff
index 213a70227d8..134f0c080bf 100644
--- a/tests/mir-opt/const_prop/mutable_variable_aggregate_mut_ref.main.ConstProp.diff
+++ b/tests/mir-opt/const_prop/mutable_variable_aggregate_mut_ref.main.ConstProp.diff
@@ -9,24 +9,26 @@
           let _2: &mut (i32, i32);         // in scope 1 at $DIR/mutable_variable_aggregate_mut_ref.rs:+2:9: +2:10
           scope 2 {
               debug z => _2;               // in scope 2 at $DIR/mutable_variable_aggregate_mut_ref.rs:+2:9: +2:10
-              let _3: (i32, i32);          // in scope 2 at $DIR/mutable_variable_aggregate_mut_ref.rs:+4:9: +4:10
+              let _3: i32;                 // in scope 2 at $DIR/mutable_variable_aggregate_mut_ref.rs:+4:9: +4:10
+              let _4: i32;                 // in scope 2 at $DIR/mutable_variable_aggregate_mut_ref.rs:+4:9: +4:10
               scope 3 {
-                  debug y => _3;           // in scope 3 at $DIR/mutable_variable_aggregate_mut_ref.rs:+4:9: +4:10
+                  debug y => (i32, i32){ .0 => _3, .1 => _4, }; // in scope 3 at $DIR/mutable_variable_aggregate_mut_ref.rs:+4:9: +4:10
               }
           }
       }
   
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/mutable_variable_aggregate_mut_ref.rs:+1:9: +1:14
-          Deinit(_1);                      // scope 0 at $DIR/mutable_variable_aggregate_mut_ref.rs:+1:17: +1:25
-          (_1.0: i32) = const 42_i32;      // scope 0 at $DIR/mutable_variable_aggregate_mut_ref.rs:+1:17: +1:25
-          (_1.1: i32) = const 43_i32;      // scope 0 at $DIR/mutable_variable_aggregate_mut_ref.rs:+1:17: +1:25
+          _1 = (const 42_i32, const 43_i32); // scope 0 at $DIR/mutable_variable_aggregate_mut_ref.rs:+1:17: +1:25
           StorageLive(_2);                 // scope 1 at $DIR/mutable_variable_aggregate_mut_ref.rs:+2:9: +2:10
           _2 = &mut _1;                    // scope 1 at $DIR/mutable_variable_aggregate_mut_ref.rs:+2:13: +2:19
           ((*_2).1: i32) = const 99_i32;   // scope 2 at $DIR/mutable_variable_aggregate_mut_ref.rs:+3:5: +3:13
           StorageLive(_3);                 // scope 2 at $DIR/mutable_variable_aggregate_mut_ref.rs:+4:9: +4:10
-          _3 = _1;                         // scope 2 at $DIR/mutable_variable_aggregate_mut_ref.rs:+4:13: +4:14
+          StorageLive(_4);                 // scope 2 at $DIR/mutable_variable_aggregate_mut_ref.rs:+4:9: +4:10
+          _3 = (_1.0: i32);                // scope 2 at $DIR/mutable_variable_aggregate_mut_ref.rs:+4:13: +4:14
+          _4 = (_1.1: i32);                // scope 2 at $DIR/mutable_variable_aggregate_mut_ref.rs:+4:13: +4:14
           StorageDead(_3);                 // scope 2 at $DIR/mutable_variable_aggregate_mut_ref.rs:+5:1: +5:2
+          StorageDead(_4);                 // scope 2 at $DIR/mutable_variable_aggregate_mut_ref.rs:+5:1: +5:2
           StorageDead(_2);                 // scope 1 at $DIR/mutable_variable_aggregate_mut_ref.rs:+5:1: +5:2
           StorageDead(_1);                 // scope 0 at $DIR/mutable_variable_aggregate_mut_ref.rs:+5:1: +5:2
           return;                          // scope 0 at $DIR/mutable_variable_aggregate_mut_ref.rs:+5:2: +5:2
diff --git a/tests/mir-opt/const_prop/mutable_variable_unprop_assign.main.ConstProp.diff b/tests/mir-opt/const_prop/mutable_variable_unprop_assign.main.ConstProp.diff
index c3f77b960a2..4010dd6c6d0 100644
--- a/tests/mir-opt/const_prop/mutable_variable_unprop_assign.main.ConstProp.diff
+++ b/tests/mir-opt/const_prop/mutable_variable_unprop_assign.main.ConstProp.diff
@@ -16,7 +16,7 @@
                   debug y => _3;           // in scope 3 at $DIR/mutable_variable_unprop_assign.rs:+4:9: +4:10
                   let _4: i32;             // in scope 3 at $DIR/mutable_variable_unprop_assign.rs:+5:9: +5:10
                   scope 4 {
-                      debug z => _4;       // in scope 4 at $DIR/mutable_variable_unprop_assign.rs:+5:9: +5:10
+                      debug z => _5;       // in scope 4 at $DIR/mutable_variable_unprop_assign.rs:+5:9: +5:10
                   }
               }
           }
@@ -31,10 +31,7 @@
       }
   
       bb1: {
-          StorageLive(_5);                 // scope 1 at $DIR/mutable_variable_unprop_assign.rs:+2:9: +2:14
           StorageLive(_6);                 // scope 1 at $DIR/mutable_variable_unprop_assign.rs:+2:9: +2:14
-          Deinit(_5);                      // scope 1 at $DIR/mutable_variable_unprop_assign.rs:+2:29: +2:35
-          Deinit(_6);                      // scope 1 at $DIR/mutable_variable_unprop_assign.rs:+2:29: +2:35
           _5 = const 1_i32;                // scope 1 at $DIR/mutable_variable_unprop_assign.rs:+2:29: +2:35
           _6 = const 2_i32;                // scope 1 at $DIR/mutable_variable_unprop_assign.rs:+2:29: +2:35
           StorageLive(_2);                 // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+3:11: +3:12
@@ -43,12 +40,7 @@
           StorageDead(_2);                 // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+3:11: +3:12
           StorageLive(_3);                 // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+4:9: +4:10
           _3 = _6;                         // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+4:13: +4:16
-          StorageLive(_4);                 // scope 3 at $DIR/mutable_variable_unprop_assign.rs:+5:9: +5:10
--         _4 = _5;                         // scope 3 at $DIR/mutable_variable_unprop_assign.rs:+5:13: +5:16
-+         _4 = const 1_i32;                // scope 3 at $DIR/mutable_variable_unprop_assign.rs:+5:13: +5:16
-          StorageDead(_4);                 // scope 3 at $DIR/mutable_variable_unprop_assign.rs:+6:1: +6:2
           StorageDead(_3);                 // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+6:1: +6:2
-          StorageDead(_5);                 // scope 1 at $DIR/mutable_variable_unprop_assign.rs:+6:1: +6:2
           StorageDead(_6);                 // scope 1 at $DIR/mutable_variable_unprop_assign.rs:+6:1: +6:2
           StorageDead(_1);                 // scope 0 at $DIR/mutable_variable_unprop_assign.rs:+6:1: +6:2
           return;                          // scope 0 at $DIR/mutable_variable_unprop_assign.rs:+6:2: +6:2
diff --git a/tests/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.32bit.diff b/tests/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.32bit.diff
index 7c7aeac4c45..691aa01a564 100644
--- a/tests/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.32bit.diff
+++ b/tests/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.32bit.diff
@@ -17,7 +17,7 @@
               debug y => _3;               // in scope 2 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
               let _8: u32;                 // in scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
               scope 3 {
-                  debug z => _8;           // in scope 3 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
+                  debug z => _9;           // in scope 3 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
               }
           }
       }
@@ -50,14 +50,7 @@
 +         _3 = const 3_i32;                // scope 1 at $DIR/optimizes_into_variable.rs:+2:13: +2:34
           StorageDead(_5);                 // scope 1 at $DIR/optimizes_into_variable.rs:+2:34: +2:35
           StorageDead(_4);                 // scope 1 at $DIR/optimizes_into_variable.rs:+2:34: +2:35
-          StorageLive(_8);                 // scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
-          StorageLive(_9);                 // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
-          Deinit(_9);                      // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
           _9 = const 42_u32;               // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
--         _8 = _9;                         // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:38
-+         _8 = const 42_u32;               // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:38
-          StorageDead(_9);                 // scope 2 at $DIR/optimizes_into_variable.rs:+3:38: +3:39
-          StorageDead(_8);                 // scope 2 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
           StorageDead(_3);                 // scope 1 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
           StorageDead(_1);                 // scope 0 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
           return;                          // scope 0 at $DIR/optimizes_into_variable.rs:+4:2: +4:2
diff --git a/tests/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.64bit.diff b/tests/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.64bit.diff
index 7c7aeac4c45..691aa01a564 100644
--- a/tests/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.64bit.diff
+++ b/tests/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.64bit.diff
@@ -17,7 +17,7 @@
               debug y => _3;               // in scope 2 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
               let _8: u32;                 // in scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
               scope 3 {
-                  debug z => _8;           // in scope 3 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
+                  debug z => _9;           // in scope 3 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
               }
           }
       }
@@ -50,14 +50,7 @@
 +         _3 = const 3_i32;                // scope 1 at $DIR/optimizes_into_variable.rs:+2:13: +2:34
           StorageDead(_5);                 // scope 1 at $DIR/optimizes_into_variable.rs:+2:34: +2:35
           StorageDead(_4);                 // scope 1 at $DIR/optimizes_into_variable.rs:+2:34: +2:35
-          StorageLive(_8);                 // scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
-          StorageLive(_9);                 // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
-          Deinit(_9);                      // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
           _9 = const 42_u32;               // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
--         _8 = _9;                         // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:38
-+         _8 = const 42_u32;               // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:38
-          StorageDead(_9);                 // scope 2 at $DIR/optimizes_into_variable.rs:+3:38: +3:39
-          StorageDead(_8);                 // scope 2 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
           StorageDead(_3);                 // scope 1 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
           StorageDead(_1);                 // scope 0 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
           return;                          // scope 0 at $DIR/optimizes_into_variable.rs:+4:2: +4:2
diff --git a/tests/mir-opt/const_prop/optimizes_into_variable.main.PreCodegen.after.32bit.mir b/tests/mir-opt/const_prop/optimizes_into_variable.main.PreCodegen.after.32bit.mir
index 9db87cfc879..81cfd22db6c 100644
--- a/tests/mir-opt/const_prop/optimizes_into_variable.main.PreCodegen.after.32bit.mir
+++ b/tests/mir-opt/const_prop/optimizes_into_variable.main.PreCodegen.after.32bit.mir
@@ -3,12 +3,12 @@
 fn main() -> () {
     let mut _0: ();                      // return place in scope 0 at $DIR/optimizes_into_variable.rs:+0:11: +0:11
     let _1: i32;                         // in scope 0 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
+    let mut _3: u32;                     // in scope 0 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
     scope 1 {
         debug x => _1;                   // in scope 1 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
         let _2: i32;                     // in scope 1 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
         scope 2 {
             debug y => _2;               // in scope 2 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
-            let _3: u32;                 // in scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
             scope 3 {
                 debug z => _3;           // in scope 3 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
             }
@@ -18,8 +18,6 @@ fn main() -> () {
     bb0: {
         StorageLive(_1);                 // scope 0 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
         StorageLive(_2);                 // scope 1 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
-        StorageLive(_3);                 // scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
-        StorageDead(_3);                 // scope 2 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
         StorageDead(_2);                 // scope 1 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
         StorageDead(_1);                 // scope 0 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
         return;                          // scope 0 at $DIR/optimizes_into_variable.rs:+4:2: +4:2
diff --git a/tests/mir-opt/const_prop/optimizes_into_variable.main.PreCodegen.after.64bit.mir b/tests/mir-opt/const_prop/optimizes_into_variable.main.PreCodegen.after.64bit.mir
index 9db87cfc879..81cfd22db6c 100644
--- a/tests/mir-opt/const_prop/optimizes_into_variable.main.PreCodegen.after.64bit.mir
+++ b/tests/mir-opt/const_prop/optimizes_into_variable.main.PreCodegen.after.64bit.mir
@@ -3,12 +3,12 @@
 fn main() -> () {
     let mut _0: ();                      // return place in scope 0 at $DIR/optimizes_into_variable.rs:+0:11: +0:11
     let _1: i32;                         // in scope 0 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
+    let mut _3: u32;                     // in scope 0 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
     scope 1 {
         debug x => _1;                   // in scope 1 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
         let _2: i32;                     // in scope 1 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
         scope 2 {
             debug y => _2;               // in scope 2 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
-            let _3: u32;                 // in scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
             scope 3 {
                 debug z => _3;           // in scope 3 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
             }
@@ -18,8 +18,6 @@ fn main() -> () {
     bb0: {
         StorageLive(_1);                 // scope 0 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
         StorageLive(_2);                 // scope 1 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
-        StorageLive(_3);                 // scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
-        StorageDead(_3);                 // scope 2 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
         StorageDead(_2);                 // scope 1 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
         StorageDead(_1);                 // scope 0 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
         return;                          // scope 0 at $DIR/optimizes_into_variable.rs:+4:2: +4:2
diff --git a/tests/mir-opt/const_prop/optimizes_into_variable.main.ScalarReplacementOfAggregates.32bit.diff b/tests/mir-opt/const_prop/optimizes_into_variable.main.ScalarReplacementOfAggregates.32bit.diff
index 3f9f3b2eac7..98cd020dade 100644
--- a/tests/mir-opt/const_prop/optimizes_into_variable.main.ScalarReplacementOfAggregates.32bit.diff
+++ b/tests/mir-opt/const_prop/optimizes_into_variable.main.ScalarReplacementOfAggregates.32bit.diff
@@ -48,20 +48,19 @@
           StorageDead(_4);                 // scope 1 at $DIR/optimizes_into_variable.rs:+2:34: +2:35
           StorageLive(_8);                 // scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
 -         StorageLive(_9);                 // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
--         Deinit(_9);                      // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
--         (_9.0: u32) = const 12_u32;      // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
--         (_9.1: u32) = const 42_u32;      // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
+-         _9 = Point { x: const 12_u32, y: const 42_u32 }; // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
 -         _8 = (_9.1: u32);                // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:38
 -         StorageDead(_9);                 // scope 2 at $DIR/optimizes_into_variable.rs:+3:38: +3:39
 +         StorageLive(_10);                // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
 +         StorageLive(_11);                // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
-+         Deinit(_10);                     // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
-+         Deinit(_11);                     // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
++         nop;                             // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
 +         _10 = const 12_u32;              // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
 +         _11 = const 42_u32;              // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
++         nop;                             // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
 +         _8 = _11;                        // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:38
 +         StorageDead(_10);                // scope 2 at $DIR/optimizes_into_variable.rs:+3:38: +3:39
 +         StorageDead(_11);                // scope 2 at $DIR/optimizes_into_variable.rs:+3:38: +3:39
++         nop;                             // scope 2 at $DIR/optimizes_into_variable.rs:+3:38: +3:39
           nop;                             // scope 0 at $DIR/optimizes_into_variable.rs:+0:11: +4:2
           StorageDead(_8);                 // scope 2 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
           StorageDead(_3);                 // scope 1 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
diff --git a/tests/mir-opt/const_prop/optimizes_into_variable.main.ScalarReplacementOfAggregates.64bit.diff b/tests/mir-opt/const_prop/optimizes_into_variable.main.ScalarReplacementOfAggregates.64bit.diff
index 3f9f3b2eac7..98cd020dade 100644
--- a/tests/mir-opt/const_prop/optimizes_into_variable.main.ScalarReplacementOfAggregates.64bit.diff
+++ b/tests/mir-opt/const_prop/optimizes_into_variable.main.ScalarReplacementOfAggregates.64bit.diff
@@ -48,20 +48,19 @@
           StorageDead(_4);                 // scope 1 at $DIR/optimizes_into_variable.rs:+2:34: +2:35
           StorageLive(_8);                 // scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
 -         StorageLive(_9);                 // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
--         Deinit(_9);                      // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
--         (_9.0: u32) = const 12_u32;      // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
--         (_9.1: u32) = const 42_u32;      // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
+-         _9 = Point { x: const 12_u32, y: const 42_u32 }; // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
 -         _8 = (_9.1: u32);                // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:38
 -         StorageDead(_9);                 // scope 2 at $DIR/optimizes_into_variable.rs:+3:38: +3:39
 +         StorageLive(_10);                // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
 +         StorageLive(_11);                // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
-+         Deinit(_10);                     // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
-+         Deinit(_11);                     // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
++         nop;                             // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
 +         _10 = const 12_u32;              // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
 +         _11 = const 42_u32;              // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
++         nop;                             // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
 +         _8 = _11;                        // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:38
 +         StorageDead(_10);                // scope 2 at $DIR/optimizes_into_variable.rs:+3:38: +3:39
 +         StorageDead(_11);                // scope 2 at $DIR/optimizes_into_variable.rs:+3:38: +3:39
++         nop;                             // scope 2 at $DIR/optimizes_into_variable.rs:+3:38: +3:39
           nop;                             // scope 0 at $DIR/optimizes_into_variable.rs:+0:11: +4:2
           StorageDead(_8);                 // scope 2 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
           StorageDead(_3);                 // scope 1 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
diff --git a/tests/mir-opt/const_prop/optimizes_into_variable.main.SimplifyLocals-final.after.32bit.mir b/tests/mir-opt/const_prop/optimizes_into_variable.main.SimplifyLocals-final.after.32bit.mir
index d926b9df733..002e914e8fa 100644
--- a/tests/mir-opt/const_prop/optimizes_into_variable.main.SimplifyLocals-final.after.32bit.mir
+++ b/tests/mir-opt/const_prop/optimizes_into_variable.main.SimplifyLocals-final.after.32bit.mir
@@ -3,12 +3,12 @@
 fn main() -> () {
     let mut _0: ();                      // return place in scope 0 at $DIR/optimizes_into_variable.rs:+0:11: +0:11
     let _1: i32;                         // in scope 0 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
+    let mut _3: u32;                     // in scope 0 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
     scope 1 {
         debug x => _1;                   // in scope 1 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
         let _2: i32;                     // in scope 1 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
         scope 2 {
             debug y => _2;               // in scope 2 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
-            let _3: u32;                 // in scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
             scope 3 {
                 debug z => _3;           // in scope 3 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
             }
@@ -18,8 +18,6 @@ fn main() -> () {
     bb0: {
         StorageLive(_1);                 // scope 0 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
         StorageLive(_2);                 // scope 1 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
-        StorageLive(_3);                 // scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
-        StorageDead(_3);                 // scope 2 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
         StorageDead(_2);                 // scope 1 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
         StorageDead(_1);                 // scope 0 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
         return;                          // scope 0 at $DIR/optimizes_into_variable.rs:+4:2: +4:2
diff --git a/tests/mir-opt/const_prop/optimizes_into_variable.main.SimplifyLocals-final.after.64bit.mir b/tests/mir-opt/const_prop/optimizes_into_variable.main.SimplifyLocals-final.after.64bit.mir
index d926b9df733..002e914e8fa 100644
--- a/tests/mir-opt/const_prop/optimizes_into_variable.main.SimplifyLocals-final.after.64bit.mir
+++ b/tests/mir-opt/const_prop/optimizes_into_variable.main.SimplifyLocals-final.after.64bit.mir
@@ -3,12 +3,12 @@
 fn main() -> () {
     let mut _0: ();                      // return place in scope 0 at $DIR/optimizes_into_variable.rs:+0:11: +0:11
     let _1: i32;                         // in scope 0 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
+    let mut _3: u32;                     // in scope 0 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
     scope 1 {
         debug x => _1;                   // in scope 1 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
         let _2: i32;                     // in scope 1 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
         scope 2 {
             debug y => _2;               // in scope 2 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
-            let _3: u32;                 // in scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
             scope 3 {
                 debug z => _3;           // in scope 3 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
             }
@@ -18,8 +18,6 @@ fn main() -> () {
     bb0: {
         StorageLive(_1);                 // scope 0 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
         StorageLive(_2);                 // scope 1 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
-        StorageLive(_3);                 // scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
-        StorageDead(_3);                 // scope 2 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
         StorageDead(_2);                 // scope 1 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
         StorageDead(_1);                 // scope 0 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
         return;                          // scope 0 at $DIR/optimizes_into_variable.rs:+4:2: +4:2
diff --git a/tests/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.diff b/tests/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.diff
index e4c92b617c6..270a1ccf560 100644
--- a/tests/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.diff
+++ b/tests/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.diff
@@ -11,24 +11,17 @@
       }
   
       bb0: {
-          StorageLive(_1);                 // scope 0 at $DIR/tuple_literal_propagation.rs:+1:9: +1:10
-          Deinit(_1);                      // scope 0 at $DIR/tuple_literal_propagation.rs:+1:13: +1:19
-          (_1.0: u32) = const 1_u32;       // scope 0 at $DIR/tuple_literal_propagation.rs:+1:13: +1:19
-          (_1.1: u32) = const 2_u32;       // scope 0 at $DIR/tuple_literal_propagation.rs:+1:13: +1:19
+-         _1 = (const 1_u32, const 2_u32); // scope 0 at $DIR/tuple_literal_propagation.rs:+1:13: +1:19
++         _1 = const (1_u32, 2_u32);       // scope 0 at $DIR/tuple_literal_propagation.rs:+1:13: +1:19
           StorageLive(_2);                 // scope 1 at $DIR/tuple_literal_propagation.rs:+3:5: +3:15
-          StorageLive(_3);                 // scope 1 at $DIR/tuple_literal_propagation.rs:+3:13: +3:14
--         _3 = _1;                         // scope 1 at $DIR/tuple_literal_propagation.rs:+3:13: +3:14
-+         _3 = const (1_u32, 2_u32);       // scope 1 at $DIR/tuple_literal_propagation.rs:+3:13: +3:14
-          _2 = consume(move _3) -> bb1;    // scope 1 at $DIR/tuple_literal_propagation.rs:+3:5: +3:15
+          _2 = consume(_1) -> bb1;         // scope 1 at $DIR/tuple_literal_propagation.rs:+3:5: +3:15
                                            // mir::Constant
                                            // + span: $DIR/tuple_literal_propagation.rs:5:5: 5:12
                                            // + literal: Const { ty: fn((u32, u32)) {consume}, val: Value(<ZST>) }
       }
   
       bb1: {
-          StorageDead(_3);                 // scope 1 at $DIR/tuple_literal_propagation.rs:+3:14: +3:15
           StorageDead(_2);                 // scope 1 at $DIR/tuple_literal_propagation.rs:+3:15: +3:16
-          StorageDead(_1);                 // scope 0 at $DIR/tuple_literal_propagation.rs:+4:1: +4:2
           return;                          // scope 0 at $DIR/tuple_literal_propagation.rs:+4:2: +4:2
       }
   }
diff --git a/tests/mir-opt/const_prop_miscompile.bar.ConstProp.diff b/tests/mir-opt/const_prop_miscompile.bar.ConstProp.diff
index b6b542fb794..def9fc6428f 100644
--- a/tests/mir-opt/const_prop_miscompile.bar.ConstProp.diff
+++ b/tests/mir-opt/const_prop_miscompile.bar.ConstProp.diff
@@ -19,8 +19,8 @@
   
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/const_prop_miscompile.rs:+1:9: +1:14
-          Deinit(_1);                      // scope 0 at $DIR/const_prop_miscompile.rs:+1:17: +1:21
-          (_1.0: i32) = const 1_i32;       // scope 0 at $DIR/const_prop_miscompile.rs:+1:17: +1:21
+-         _1 = (const 1_i32,);             // scope 0 at $DIR/const_prop_miscompile.rs:+1:17: +1:21
++         _1 = const (1_i32,);             // scope 0 at $DIR/const_prop_miscompile.rs:+1:17: +1:21
           StorageLive(_2);                 // scope 1 at $DIR/const_prop_miscompile.rs:+2:5: +4:6
           StorageLive(_3);                 // scope 2 at $DIR/const_prop_miscompile.rs:+3:10: +3:22
           _3 = &raw mut (_1.0: i32);       // scope 2 at $DIR/const_prop_miscompile.rs:+3:10: +3:22
diff --git a/tests/mir-opt/const_prop_miscompile.foo.ConstProp.diff b/tests/mir-opt/const_prop_miscompile.foo.ConstProp.diff
index e43735fd9e1..b54c10a140f 100644
--- a/tests/mir-opt/const_prop_miscompile.foo.ConstProp.diff
+++ b/tests/mir-opt/const_prop_miscompile.foo.ConstProp.diff
@@ -16,8 +16,8 @@
   
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/const_prop_miscompile.rs:+1:9: +1:14
-          Deinit(_1);                      // scope 0 at $DIR/const_prop_miscompile.rs:+1:17: +1:21
-          (_1.0: i32) = const 1_i32;       // scope 0 at $DIR/const_prop_miscompile.rs:+1:17: +1:21
+-         _1 = (const 1_i32,);             // scope 0 at $DIR/const_prop_miscompile.rs:+1:17: +1:21
++         _1 = const (1_i32,);             // scope 0 at $DIR/const_prop_miscompile.rs:+1:17: +1:21
           StorageLive(_2);                 // scope 1 at $DIR/const_prop_miscompile.rs:+2:6: +2:14
           _2 = &mut (_1.0: i32);           // scope 1 at $DIR/const_prop_miscompile.rs:+2:6: +2:14
           (*_2) = const 5_i32;             // scope 1 at $DIR/const_prop_miscompile.rs:+2:5: +2:18
diff --git a/tests/mir-opt/copy-prop/issue_107511.main.CopyProp.diff b/tests/mir-opt/copy-prop/issue_107511.main.CopyProp.diff
index 28ba651ad4a..97d0a01e00b 100644
--- a/tests/mir-opt/copy-prop/issue_107511.main.CopyProp.diff
+++ b/tests/mir-opt/copy-prop/issue_107511.main.CopyProp.diff
@@ -57,9 +57,7 @@
   
       bb1: {
           StorageDead(_6);                 // scope 2 at $DIR/issue_107511.rs:+6:23: +6:24
-          Deinit(_4);                      // scope 2 at $DIR/issue_107511.rs:+6:14: +6:24
-          (_4.0: usize) = const 0_usize;   // scope 2 at $DIR/issue_107511.rs:+6:14: +6:24
-          (_4.1: usize) = move _5;         // scope 2 at $DIR/issue_107511.rs:+6:14: +6:24
+          _4 = std::ops::Range::<usize> { start: const 0_usize, end: move _5 }; // scope 2 at $DIR/issue_107511.rs:+6:14: +6:24
           StorageDead(_5);                 // scope 2 at $DIR/issue_107511.rs:+6:23: +6:24
           _3 = <std::ops::Range<usize> as IntoIterator>::into_iter(move _4) -> bb2; // scope 2 at $DIR/issue_107511.rs:+6:14: +6:24
                                            // mir::Constant
diff --git a/tests/mir-opt/copy-prop/move_projection.f.CopyProp.diff b/tests/mir-opt/copy-prop/move_projection.f.CopyProp.diff
new file mode 100644
index 00000000000..02308beb88a
--- /dev/null
+++ b/tests/mir-opt/copy-prop/move_projection.f.CopyProp.diff
@@ -0,0 +1,31 @@
+- // MIR for `f` before CopyProp
++ // MIR for `f` after CopyProp
+  
+  fn f(_1: Foo) -> bool {
+      let mut _0: bool;                    // return place in scope 0 at $DIR/move_projection.rs:+0:17: +0:21
+      let mut _2: Foo;                     // in scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
+      let mut _3: u8;                      // in scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
+  
+      bb0: {
+-         _2 = _1;                         // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
+-         _3 = move (_2.0: u8);            // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
+-         _0 = opaque::<Foo>(move _1) -> bb1; // scope 0 at $DIR/move_projection.rs:+6:13: +6:44
++         _3 = (_1.0: u8);                 // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
++         _0 = opaque::<Foo>(_1) -> bb1;   // scope 0 at $DIR/move_projection.rs:+6:13: +6:44
+                                           // mir::Constant
+                                           // + span: $DIR/move_projection.rs:19:28: 19:34
+                                           // + literal: Const { ty: fn(Foo) -> bool {opaque::<Foo>}, val: Value(<ZST>) }
+      }
+  
+      bb1: {
+          _0 = opaque::<u8>(move _3) -> bb2; // scope 0 at $DIR/move_projection.rs:+9:13: +9:44
+                                           // mir::Constant
+                                           // + span: $DIR/move_projection.rs:22:28: 22:34
+                                           // + literal: Const { ty: fn(u8) -> bool {opaque::<u8>}, val: Value(<ZST>) }
+      }
+  
+      bb2: {
+          return;                          // scope 0 at $DIR/move_projection.rs:+12:13: +12:21
+      }
+  }
+  
diff --git a/tests/mir-opt/copy-prop/move_projection.rs b/tests/mir-opt/copy-prop/move_projection.rs
new file mode 100644
index 00000000000..2a1bbae99a4
--- /dev/null
+++ b/tests/mir-opt/copy-prop/move_projection.rs
@@ -0,0 +1,34 @@
+// unit-test: CopyProp
+
+#![feature(custom_mir, core_intrinsics)]
+#![allow(unused_assignments)]
+extern crate core;
+use core::intrinsics::mir::*;
+
+fn opaque(_: impl Sized) -> bool { true }
+
+struct Foo(u8);
+
+#[custom_mir(dialect = "analysis", phase = "post-cleanup")]
+fn f(a: Foo) -> bool {
+    mir!(
+        {
+            let b = a;
+            // This is a move out of a copy, so must become a copy of `a.0`.
+            let c = Move(b.0);
+            Call(RET, bb1, opaque(Move(a)))
+        }
+        bb1 = {
+            Call(RET, ret, opaque(Move(c)))
+        }
+        ret = {
+            Return()
+        }
+    )
+}
+
+fn main() {
+    assert!(f(Foo(0)));
+}
+
+// EMIT_MIR move_projection.f.CopyProp.diff
diff --git a/tests/mir-opt/dataflow-const-prop/enum.main.DataflowConstProp.diff b/tests/mir-opt/dataflow-const-prop/enum.main.DataflowConstProp.diff
index fce18fae436..d049c79d78d 100644
--- a/tests/mir-opt/dataflow-const-prop/enum.main.DataflowConstProp.diff
+++ b/tests/mir-opt/dataflow-const-prop/enum.main.DataflowConstProp.diff
@@ -23,9 +23,7 @@
   
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/enum.rs:+1:9: +1:10
-          Deinit(_1);                      // scope 0 at $DIR/enum.rs:+1:13: +1:21
-          ((_1 as V1).0: i32) = const 0_i32; // scope 0 at $DIR/enum.rs:+1:13: +1:21
-          discriminant(_1) = 0;            // scope 0 at $DIR/enum.rs:+1:13: +1:21
+          _1 = E::V1(const 0_i32);         // scope 0 at $DIR/enum.rs:+1:13: +1:21
           StorageLive(_2);                 // scope 1 at $DIR/enum.rs:+2:9: +2:10
           _3 = discriminant(_1);           // scope 1 at $DIR/enum.rs:+2:19: +2:20
           switchInt(move _3) -> [0: bb3, 1: bb1, otherwise: bb2]; // scope 1 at $DIR/enum.rs:+2:13: +2:20
diff --git a/tests/mir-opt/dataflow-const-prop/repr_transparent.main.DataflowConstProp.diff b/tests/mir-opt/dataflow-const-prop/repr_transparent.main.DataflowConstProp.diff
index f66b00a9a22..8f045eedfb0 100644
--- a/tests/mir-opt/dataflow-const-prop/repr_transparent.main.DataflowConstProp.diff
+++ b/tests/mir-opt/dataflow-const-prop/repr_transparent.main.DataflowConstProp.diff
@@ -17,8 +17,7 @@
   
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/repr_transparent.rs:+1:9: +1:10
-          Deinit(_1);                      // scope 0 at $DIR/repr_transparent.rs:+1:13: +1:19
-          (_1.0: i32) = const 0_i32;       // scope 0 at $DIR/repr_transparent.rs:+1:13: +1:19
+          _1 = I32(const 0_i32);           // scope 0 at $DIR/repr_transparent.rs:+1:13: +1:19
           StorageLive(_2);                 // scope 1 at $DIR/repr_transparent.rs:+2:9: +2:10
           StorageLive(_3);                 // scope 1 at $DIR/repr_transparent.rs:+2:17: +2:26
           StorageLive(_4);                 // scope 1 at $DIR/repr_transparent.rs:+2:17: +2:20
@@ -31,9 +30,8 @@
 +         _3 = const 0_i32;                // scope 1 at $DIR/repr_transparent.rs:+2:17: +2:26
           StorageDead(_5);                 // scope 1 at $DIR/repr_transparent.rs:+2:25: +2:26
           StorageDead(_4);                 // scope 1 at $DIR/repr_transparent.rs:+2:25: +2:26
-          Deinit(_2);                      // scope 1 at $DIR/repr_transparent.rs:+2:13: +2:27
--         (_2.0: i32) = move _3;           // scope 1 at $DIR/repr_transparent.rs:+2:13: +2:27
-+         (_2.0: i32) = const 0_i32;       // scope 1 at $DIR/repr_transparent.rs:+2:13: +2:27
+-         _2 = I32(move _3);               // scope 1 at $DIR/repr_transparent.rs:+2:13: +2:27
++         _2 = I32(const 0_i32);           // scope 1 at $DIR/repr_transparent.rs:+2:13: +2:27
           StorageDead(_3);                 // scope 1 at $DIR/repr_transparent.rs:+2:26: +2:27
           _0 = const ();                   // scope 0 at $DIR/repr_transparent.rs:+0:11: +3:2
           StorageDead(_2);                 // scope 1 at $DIR/repr_transparent.rs:+3:1: +3:2
diff --git a/tests/mir-opt/dataflow-const-prop/sibling_ptr.main.DataflowConstProp.diff b/tests/mir-opt/dataflow-const-prop/sibling_ptr.main.DataflowConstProp.diff
index 8126d4b8585..a91a755830d 100644
--- a/tests/mir-opt/dataflow-const-prop/sibling_ptr.main.DataflowConstProp.diff
+++ b/tests/mir-opt/dataflow-const-prop/sibling_ptr.main.DataflowConstProp.diff
@@ -23,9 +23,7 @@
   
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/sibling_ptr.rs:+1:9: +1:14
-          Deinit(_1);                      // scope 0 at $DIR/sibling_ptr.rs:+1:27: +1:33
-          (_1.0: u8) = const 0_u8;         // scope 0 at $DIR/sibling_ptr.rs:+1:27: +1:33
-          (_1.1: u8) = const 0_u8;         // scope 0 at $DIR/sibling_ptr.rs:+1:27: +1:33
+          _1 = (const 0_u8, const 0_u8);   // scope 0 at $DIR/sibling_ptr.rs:+1:27: +1:33
           StorageLive(_2);                 // scope 1 at $DIR/sibling_ptr.rs:+2:5: +5:6
           StorageLive(_3);                 // scope 2 at $DIR/sibling_ptr.rs:+3:13: +3:14
           _3 = &raw mut (_1.0: u8);        // scope 2 at $SRC_DIR/core/src/ptr/mod.rs:LL:COL
diff --git a/tests/mir-opt/dataflow-const-prop/struct.main.DataflowConstProp.diff b/tests/mir-opt/dataflow-const-prop/struct.main.DataflowConstProp.diff
index cfb2706c167..53c62c08173 100644
--- a/tests/mir-opt/dataflow-const-prop/struct.main.DataflowConstProp.diff
+++ b/tests/mir-opt/dataflow-const-prop/struct.main.DataflowConstProp.diff
@@ -21,8 +21,7 @@
   
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/struct.rs:+1:9: +1:14
-          Deinit(_1);                      // scope 0 at $DIR/struct.rs:+1:17: +1:21
-          (_1.0: i32) = const 1_i32;       // scope 0 at $DIR/struct.rs:+1:17: +1:21
+          _1 = S(const 1_i32);             // scope 0 at $DIR/struct.rs:+1:17: +1:21
           StorageLive(_2);                 // scope 1 at $DIR/struct.rs:+2:9: +2:10
           StorageLive(_3);                 // scope 1 at $DIR/struct.rs:+2:13: +2:16
 -         _3 = (_1.0: i32);                // scope 1 at $DIR/struct.rs:+2:13: +2:16
diff --git a/tests/mir-opt/dataflow-const-prop/tuple.main.DataflowConstProp.diff b/tests/mir-opt/dataflow-const-prop/tuple.main.DataflowConstProp.diff
index e028def00a1..8ce4ce4ba97 100644
--- a/tests/mir-opt/dataflow-const-prop/tuple.main.DataflowConstProp.diff
+++ b/tests/mir-opt/dataflow-const-prop/tuple.main.DataflowConstProp.diff
@@ -25,9 +25,7 @@
   
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/tuple.rs:+1:9: +1:14
-          Deinit(_1);                      // scope 0 at $DIR/tuple.rs:+1:17: +1:23
-          (_1.0: i32) = const 1_i32;       // scope 0 at $DIR/tuple.rs:+1:17: +1:23
-          (_1.1: i32) = const 2_i32;       // scope 0 at $DIR/tuple.rs:+1:17: +1:23
+          _1 = (const 1_i32, const 2_i32); // scope 0 at $DIR/tuple.rs:+1:17: +1:23
           StorageLive(_2);                 // scope 1 at $DIR/tuple.rs:+2:9: +2:10
           StorageLive(_3);                 // scope 1 at $DIR/tuple.rs:+2:13: +2:22
           StorageLive(_4);                 // scope 1 at $DIR/tuple.rs:+2:13: +2:16
@@ -43,9 +41,7 @@
 -         _2 = Add(move _3, const 3_i32);  // scope 1 at $DIR/tuple.rs:+2:13: +2:26
 +         _2 = const 6_i32;                // scope 1 at $DIR/tuple.rs:+2:13: +2:26
           StorageDead(_3);                 // scope 1 at $DIR/tuple.rs:+2:25: +2:26
-          Deinit(_1);                      // scope 2 at $DIR/tuple.rs:+3:5: +3:15
-          (_1.0: i32) = const 2_i32;       // scope 2 at $DIR/tuple.rs:+3:5: +3:15
-          (_1.1: i32) = const 3_i32;       // scope 2 at $DIR/tuple.rs:+3:5: +3:15
+          _1 = (const 2_i32, const 3_i32); // scope 2 at $DIR/tuple.rs:+3:5: +3:15
           StorageLive(_6);                 // scope 2 at $DIR/tuple.rs:+4:9: +4:10
           StorageLive(_7);                 // scope 2 at $DIR/tuple.rs:+4:13: +4:22
           StorageLive(_8);                 // scope 2 at $DIR/tuple.rs:+4:13: +4:16
diff --git a/tests/mir-opt/deaggregator_test.bar.Deaggregator.diff b/tests/mir-opt/deaggregator_test.bar.Deaggregator.diff
deleted file mode 100644
index db136485a21..00000000000
--- a/tests/mir-opt/deaggregator_test.bar.Deaggregator.diff
+++ /dev/null
@@ -1,21 +0,0 @@
-- // MIR for `bar` before Deaggregator
-+ // MIR for `bar` after Deaggregator
-  
-  fn bar(_1: usize) -> Baz {
-      debug a => _1;                       // in scope 0 at $DIR/deaggregator_test.rs:+0:8: +0:9
-      let mut _0: Baz;                     // return place in scope 0 at $DIR/deaggregator_test.rs:+0:21: +0:24
-      let mut _2: usize;                   // in scope 0 at $DIR/deaggregator_test.rs:+1:14: +1:15
-  
-      bb0: {
-          StorageLive(_2);                 // scope 0 at $DIR/deaggregator_test.rs:+1:14: +1:15
-          _2 = _1;                         // scope 0 at $DIR/deaggregator_test.rs:+1:14: +1:15
--         _0 = Baz { x: move _2, y: const 0f32, z: const false }; // scope 0 at $DIR/deaggregator_test.rs:+1:5: +1:35
-+         Deinit(_0);                      // scope 0 at $DIR/deaggregator_test.rs:+1:5: +1:35
-+         (_0.0: usize) = move _2;         // scope 0 at $DIR/deaggregator_test.rs:+1:5: +1:35
-+         (_0.1: f32) = const 0f32;        // scope 0 at $DIR/deaggregator_test.rs:+1:5: +1:35
-+         (_0.2: bool) = const false;      // scope 0 at $DIR/deaggregator_test.rs:+1:5: +1:35
-          StorageDead(_2);                 // scope 0 at $DIR/deaggregator_test.rs:+1:34: +1:35
-          return;                          // scope 0 at $DIR/deaggregator_test.rs:+2:2: +2:2
-      }
-  }
-  
diff --git a/tests/mir-opt/deaggregator_test.rs b/tests/mir-opt/deaggregator_test.rs
deleted file mode 100644
index ee59402af38..00000000000
--- a/tests/mir-opt/deaggregator_test.rs
+++ /dev/null
@@ -1,17 +0,0 @@
-// unit-test: Deaggregator
-
-struct Baz {
-    x: usize,
-    y: f32,
-    z: bool,
-}
-
-// EMIT_MIR deaggregator_test.bar.Deaggregator.diff
-fn bar(a: usize) -> Baz {
-    Baz { x: a, y: 0.0, z: false }
-}
-
-fn main() {
-    // Make sure the function actually gets instantiated.
-    bar(0);
-}
diff --git a/tests/mir-opt/deaggregator_test_enum.bar.Deaggregator.diff b/tests/mir-opt/deaggregator_test_enum.bar.Deaggregator.diff
deleted file mode 100644
index f28c2b482af..00000000000
--- a/tests/mir-opt/deaggregator_test_enum.bar.Deaggregator.diff
+++ /dev/null
@@ -1,20 +0,0 @@
-- // MIR for `bar` before Deaggregator
-+ // MIR for `bar` after Deaggregator
-  
-  fn bar(_1: usize) -> Baz {
-      debug a => _1;                       // in scope 0 at $DIR/deaggregator_test_enum.rs:+0:8: +0:9
-      let mut _0: Baz;                     // return place in scope 0 at $DIR/deaggregator_test_enum.rs:+0:21: +0:24
-      let mut _2: usize;                   // in scope 0 at $DIR/deaggregator_test_enum.rs:+1:19: +1:20
-  
-      bb0: {
-          StorageLive(_2);                 // scope 0 at $DIR/deaggregator_test_enum.rs:+1:19: +1:20
-          _2 = _1;                         // scope 0 at $DIR/deaggregator_test_enum.rs:+1:19: +1:20
--         _0 = Baz::Foo { x: move _2 };    // scope 0 at $DIR/deaggregator_test_enum.rs:+1:5: +1:22
-+         Deinit(_0);                      // scope 0 at $DIR/deaggregator_test_enum.rs:+1:5: +1:22
-+         ((_0 as Foo).0: usize) = move _2; // scope 0 at $DIR/deaggregator_test_enum.rs:+1:5: +1:22
-+         discriminant(_0) = 1;            // scope 0 at $DIR/deaggregator_test_enum.rs:+1:5: +1:22
-          StorageDead(_2);                 // scope 0 at $DIR/deaggregator_test_enum.rs:+1:21: +1:22
-          return;                          // scope 0 at $DIR/deaggregator_test_enum.rs:+2:2: +2:2
-      }
-  }
-  
diff --git a/tests/mir-opt/deaggregator_test_enum.rs b/tests/mir-opt/deaggregator_test_enum.rs
deleted file mode 100644
index ea402dafdec..00000000000
--- a/tests/mir-opt/deaggregator_test_enum.rs
+++ /dev/null
@@ -1,19 +0,0 @@
-// unit-test: Deaggregator
-
-enum Baz {
-    Empty,
-    Foo { x: usize },
-}
-
-// EMIT_MIR deaggregator_test_enum.bar.Deaggregator.diff
-fn bar(a: usize) -> Baz {
-    Baz::Foo { x: a }
-}
-
-fn main() {
-    let x = bar(10);
-    match x {
-        Baz::Empty => println!("empty"),
-        Baz::Foo { x } => println!("{}", x),
-    };
-}
diff --git a/tests/mir-opt/deaggregator_test_enum_2.rs b/tests/mir-opt/deaggregator_test_enum_2.rs
deleted file mode 100644
index 955c317324a..00000000000
--- a/tests/mir-opt/deaggregator_test_enum_2.rs
+++ /dev/null
@@ -1,21 +0,0 @@
-// unit-test: Deaggregator
-// Test that deaggregate fires in more than one basic block
-
-enum Foo {
-    A(i32),
-    B(i32),
-}
-
-// EMIT_MIR deaggregator_test_enum_2.test1.Deaggregator.diff
-fn test1(x: bool, y: i32) -> Foo {
-    if x {
-        Foo::A(y)
-    } else {
-        Foo::B(y)
-    }
-}
-
-fn main() {
-    // Make sure the function actually gets instantiated.
-    test1(false, 0);
-}
diff --git a/tests/mir-opt/deaggregator_test_enum_2.test1.Deaggregator.diff b/tests/mir-opt/deaggregator_test_enum_2.test1.Deaggregator.diff
deleted file mode 100644
index 210d3849e18..00000000000
--- a/tests/mir-opt/deaggregator_test_enum_2.test1.Deaggregator.diff
+++ /dev/null
@@ -1,45 +0,0 @@
-- // MIR for `test1` before Deaggregator
-+ // MIR for `test1` after Deaggregator
-  
-  fn test1(_1: bool, _2: i32) -> Foo {
-      debug x => _1;                       // in scope 0 at $DIR/deaggregator_test_enum_2.rs:+0:10: +0:11
-      debug y => _2;                       // in scope 0 at $DIR/deaggregator_test_enum_2.rs:+0:19: +0:20
-      let mut _0: Foo;                     // return place in scope 0 at $DIR/deaggregator_test_enum_2.rs:+0:30: +0:33
-      let mut _3: bool;                    // in scope 0 at $DIR/deaggregator_test_enum_2.rs:+1:8: +1:9
-      let mut _4: i32;                     // in scope 0 at $DIR/deaggregator_test_enum_2.rs:+2:16: +2:17
-      let mut _5: i32;                     // in scope 0 at $DIR/deaggregator_test_enum_2.rs:+4:16: +4:17
-  
-      bb0: {
-          StorageLive(_3);                 // scope 0 at $DIR/deaggregator_test_enum_2.rs:+1:8: +1:9
-          _3 = _1;                         // scope 0 at $DIR/deaggregator_test_enum_2.rs:+1:8: +1:9
-          switchInt(move _3) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/deaggregator_test_enum_2.rs:+1:8: +1:9
-      }
-  
-      bb1: {
-          StorageLive(_4);                 // scope 0 at $DIR/deaggregator_test_enum_2.rs:+2:16: +2:17
-          _4 = _2;                         // scope 0 at $DIR/deaggregator_test_enum_2.rs:+2:16: +2:17
--         _0 = Foo::A(move _4);            // scope 0 at $DIR/deaggregator_test_enum_2.rs:+2:9: +2:18
-+         Deinit(_0);                      // scope 0 at $DIR/deaggregator_test_enum_2.rs:+2:9: +2:18
-+         ((_0 as A).0: i32) = move _4;    // scope 0 at $DIR/deaggregator_test_enum_2.rs:+2:9: +2:18
-+         discriminant(_0) = 0;            // scope 0 at $DIR/deaggregator_test_enum_2.rs:+2:9: +2:18
-          StorageDead(_4);                 // scope 0 at $DIR/deaggregator_test_enum_2.rs:+2:17: +2:18
-          goto -> bb3;                     // scope 0 at $DIR/deaggregator_test_enum_2.rs:+1:5: +5:6
-      }
-  
-      bb2: {
-          StorageLive(_5);                 // scope 0 at $DIR/deaggregator_test_enum_2.rs:+4:16: +4:17
-          _5 = _2;                         // scope 0 at $DIR/deaggregator_test_enum_2.rs:+4:16: +4:17
--         _0 = Foo::B(move _5);            // scope 0 at $DIR/deaggregator_test_enum_2.rs:+4:9: +4:18
-+         Deinit(_0);                      // scope 0 at $DIR/deaggregator_test_enum_2.rs:+4:9: +4:18
-+         ((_0 as B).0: i32) = move _5;    // scope 0 at $DIR/deaggregator_test_enum_2.rs:+4:9: +4:18
-+         discriminant(_0) = 1;            // scope 0 at $DIR/deaggregator_test_enum_2.rs:+4:9: +4:18
-          StorageDead(_5);                 // scope 0 at $DIR/deaggregator_test_enum_2.rs:+4:17: +4:18
-          goto -> bb3;                     // scope 0 at $DIR/deaggregator_test_enum_2.rs:+1:5: +5:6
-      }
-  
-      bb3: {
-          StorageDead(_3);                 // scope 0 at $DIR/deaggregator_test_enum_2.rs:+5:5: +5:6
-          return;                          // scope 0 at $DIR/deaggregator_test_enum_2.rs:+6:2: +6:2
-      }
-  }
-  
diff --git a/tests/mir-opt/deaggregator_test_multiple.rs b/tests/mir-opt/deaggregator_test_multiple.rs
deleted file mode 100644
index 46305fe21d2..00000000000
--- a/tests/mir-opt/deaggregator_test_multiple.rs
+++ /dev/null
@@ -1,17 +0,0 @@
-// unit-test: Deaggregator
-// Test that deaggregate fires more than once per block
-
-enum Foo {
-    A(i32),
-    B,
-}
-
-// EMIT_MIR deaggregator_test_multiple.test.Deaggregator.diff
-fn test(x: i32) -> [Foo; 2] {
-    [Foo::A(x), Foo::A(x)]
-}
-
-fn main() {
-    // Make sure the function actually gets instantiated.
-    test(0);
-}
diff --git a/tests/mir-opt/deaggregator_test_multiple.test.Deaggregator.diff b/tests/mir-opt/deaggregator_test_multiple.test.Deaggregator.diff
deleted file mode 100644
index cf5da273c28..00000000000
--- a/tests/mir-opt/deaggregator_test_multiple.test.Deaggregator.diff
+++ /dev/null
@@ -1,35 +0,0 @@
-- // MIR for `test` before Deaggregator
-+ // MIR for `test` after Deaggregator
-  
-  fn test(_1: i32) -> [Foo; 2] {
-      debug x => _1;                       // in scope 0 at $DIR/deaggregator_test_multiple.rs:+0:9: +0:10
-      let mut _0: [Foo; 2];                // return place in scope 0 at $DIR/deaggregator_test_multiple.rs:+0:20: +0:28
-      let mut _2: Foo;                     // in scope 0 at $DIR/deaggregator_test_multiple.rs:+1:6: +1:15
-      let mut _3: i32;                     // in scope 0 at $DIR/deaggregator_test_multiple.rs:+1:13: +1:14
-      let mut _4: Foo;                     // in scope 0 at $DIR/deaggregator_test_multiple.rs:+1:17: +1:26
-      let mut _5: i32;                     // in scope 0 at $DIR/deaggregator_test_multiple.rs:+1:24: +1:25
-  
-      bb0: {
-          StorageLive(_2);                 // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:6: +1:15
-          StorageLive(_3);                 // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:13: +1:14
-          _3 = _1;                         // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:13: +1:14
--         _2 = Foo::A(move _3);            // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:6: +1:15
-+         Deinit(_2);                      // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:6: +1:15
-+         ((_2 as A).0: i32) = move _3;    // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:6: +1:15
-+         discriminant(_2) = 0;            // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:6: +1:15
-          StorageDead(_3);                 // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:14: +1:15
-          StorageLive(_4);                 // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:17: +1:26
-          StorageLive(_5);                 // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:24: +1:25
-          _5 = _1;                         // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:24: +1:25
--         _4 = Foo::A(move _5);            // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:17: +1:26
-+         Deinit(_4);                      // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:17: +1:26
-+         ((_4 as A).0: i32) = move _5;    // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:17: +1:26
-+         discriminant(_4) = 0;            // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:17: +1:26
-          StorageDead(_5);                 // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:25: +1:26
-          _0 = [move _2, move _4];         // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:5: +1:27
-          StorageDead(_4);                 // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:26: +1:27
-          StorageDead(_2);                 // scope 0 at $DIR/deaggregator_test_multiple.rs:+1:26: +1:27
-          return;                          // scope 0 at $DIR/deaggregator_test_multiple.rs:+2:2: +2:2
-      }
-  }
-  
diff --git a/tests/mir-opt/early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff b/tests/mir-opt/early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff
index 98a02ee38dd..5383d1be129 100644
--- a/tests/mir-opt/early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff
+++ b/tests/mir-opt/early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff
@@ -25,9 +25,7 @@
           _4 = _1;                         // scope 0 at $DIR/early_otherwise_branch.rs:+1:12: +1:13
           StorageLive(_5);                 // scope 0 at $DIR/early_otherwise_branch.rs:+1:15: +1:16
           _5 = _2;                         // scope 0 at $DIR/early_otherwise_branch.rs:+1:15: +1:16
-          Deinit(_3);                      // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
-          (_3.0: std::option::Option<u32>) = move _4; // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
-          (_3.1: std::option::Option<u32>) = move _5; // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
+          _3 = (move _4, move _5);         // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
           StorageDead(_5);                 // scope 0 at $DIR/early_otherwise_branch.rs:+1:16: +1:17
           StorageDead(_4);                 // scope 0 at $DIR/early_otherwise_branch.rs:+1:16: +1:17
           _7 = discriminant((_3.0: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
diff --git a/tests/mir-opt/early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff b/tests/mir-opt/early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff
index aa75c44b809..b3e21ff49bd 100644
--- a/tests/mir-opt/early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff
+++ b/tests/mir-opt/early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff
@@ -26,9 +26,7 @@
           _4 = _1;                         // scope 0 at $DIR/early_otherwise_branch.rs:+1:12: +1:13
           StorageLive(_5);                 // scope 0 at $DIR/early_otherwise_branch.rs:+1:15: +1:16
           _5 = _2;                         // scope 0 at $DIR/early_otherwise_branch.rs:+1:15: +1:16
-          Deinit(_3);                      // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
-          (_3.0: std::option::Option<u32>) = move _4; // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
-          (_3.1: std::option::Option<u32>) = move _5; // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
+          _3 = (move _4, move _5);         // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
           StorageDead(_5);                 // scope 0 at $DIR/early_otherwise_branch.rs:+1:16: +1:17
           StorageDead(_4);                 // scope 0 at $DIR/early_otherwise_branch.rs:+1:16: +1:17
           _8 = discriminant((_3.0: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
diff --git a/tests/mir-opt/early_otherwise_branch.opt3.EarlyOtherwiseBranch.diff b/tests/mir-opt/early_otherwise_branch.opt3.EarlyOtherwiseBranch.diff
index cea6ff7cd05..e098a88eb55 100644
--- a/tests/mir-opt/early_otherwise_branch.opt3.EarlyOtherwiseBranch.diff
+++ b/tests/mir-opt/early_otherwise_branch.opt3.EarlyOtherwiseBranch.diff
@@ -25,9 +25,7 @@
           _4 = _1;                         // scope 0 at $DIR/early_otherwise_branch.rs:+1:12: +1:13
           StorageLive(_5);                 // scope 0 at $DIR/early_otherwise_branch.rs:+1:15: +1:16
           _5 = _2;                         // scope 0 at $DIR/early_otherwise_branch.rs:+1:15: +1:16
-          Deinit(_3);                      // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
-          (_3.0: std::option::Option<u32>) = move _4; // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
-          (_3.1: std::option::Option<bool>) = move _5; // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
+          _3 = (move _4, move _5);         // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
           StorageDead(_5);                 // scope 0 at $DIR/early_otherwise_branch.rs:+1:16: +1:17
           StorageDead(_4);                 // scope 0 at $DIR/early_otherwise_branch.rs:+1:16: +1:17
           _7 = discriminant((_3.0: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
diff --git a/tests/mir-opt/early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff b/tests/mir-opt/early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff
index b90d70ce43a..ec3b4bbdff4 100644
--- a/tests/mir-opt/early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff
+++ b/tests/mir-opt/early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff
@@ -34,10 +34,7 @@
           _6 = _2;                         // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:15: +1:16
           StorageLive(_7);                 // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:18: +1:19
           _7 = _3;                         // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:18: +1:19
-          Deinit(_4);                      // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:11: +1:20
-          (_4.0: std::option::Option<u32>) = move _5; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:11: +1:20
-          (_4.1: std::option::Option<u32>) = move _6; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:11: +1:20
-          (_4.2: std::option::Option<u32>) = move _7; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:11: +1:20
+          _4 = (move _5, move _6, move _7); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:11: +1:20
           StorageDead(_7);                 // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:19: +1:20
           StorageDead(_6);                 // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:19: +1:20
           StorageDead(_5);                 // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:19: +1:20
diff --git a/tests/mir-opt/early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.diff b/tests/mir-opt/early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.diff
index 9edd1a39f45..a91d0d7cf73 100644
--- a/tests/mir-opt/early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.diff
+++ b/tests/mir-opt/early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.diff
@@ -73,9 +73,7 @@
           _5 = _1;                         // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:15: +5:16
           StorageLive(_6);                 // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:18: +5:23
           _6 = _2;                         // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:18: +5:23
-          Deinit(_4);                      // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:14: +5:24
-          (_4.0: &ViewportPercentageLength) = move _5; // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:14: +5:24
-          (_4.1: &ViewportPercentageLength) = move _6; // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:14: +5:24
+          _4 = (move _5, move _6);         // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:14: +5:24
           StorageDead(_6);                 // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:23: +5:24
           StorageDead(_5);                 // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:23: +5:24
           _34 = deref_copy (_4.0: &ViewportPercentageLength); // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:14: +5:24
@@ -91,10 +89,8 @@
   
       bb2: {
           StorageLive(_33);                // scope 0 at $DIR/early_otherwise_branch_68867.rs:+10:25: +10:27
-          Deinit(_33);                     // scope 0 at $DIR/early_otherwise_branch_68867.rs:+10:25: +10:27
-          Deinit(_0);                      // scope 0 at $DIR/early_otherwise_branch_68867.rs:+10:21: +10:28
-          ((_0 as Err).0: ()) = move _33;  // scope 0 at $DIR/early_otherwise_branch_68867.rs:+10:21: +10:28
-          discriminant(_0) = 1;            // scope 0 at $DIR/early_otherwise_branch_68867.rs:+10:21: +10:28
+          _33 = ();                        // scope 0 at $DIR/early_otherwise_branch_68867.rs:+10:25: +10:27
+          _0 = Result::<ViewportPercentageLength, ()>::Err(move _33); // scope 0 at $DIR/early_otherwise_branch_68867.rs:+10:21: +10:28
           StorageDead(_33);                // scope 0 at $DIR/early_otherwise_branch_68867.rs:+10:27: +10:28
           StorageDead(_3);                 // scope 0 at $DIR/early_otherwise_branch_68867.rs:+11:6: +11:7
           StorageDead(_4);                 // scope 0 at $DIR/early_otherwise_branch_68867.rs:+12:1: +12:2
@@ -134,9 +130,7 @@
           _14 = Add(move _15, move _16);   // scope 1 at $DIR/early_otherwise_branch_68867.rs:+6:38: +6:49
           StorageDead(_16);                // scope 1 at $DIR/early_otherwise_branch_68867.rs:+6:48: +6:49
           StorageDead(_15);                // scope 1 at $DIR/early_otherwise_branch_68867.rs:+6:48: +6:49
-          Deinit(_3);                      // scope 1 at $DIR/early_otherwise_branch_68867.rs:+6:35: +6:50
-          ((_3 as Vw).0: f32) = move _14;  // scope 1 at $DIR/early_otherwise_branch_68867.rs:+6:35: +6:50
-          discriminant(_3) = 0;            // scope 1 at $DIR/early_otherwise_branch_68867.rs:+6:35: +6:50
+          _3 = ViewportPercentageLength::Vw(move _14); // scope 1 at $DIR/early_otherwise_branch_68867.rs:+6:35: +6:50
           StorageDead(_14);                // scope 1 at $DIR/early_otherwise_branch_68867.rs:+6:49: +6:50
           StorageDead(_13);                // scope 0 at $DIR/early_otherwise_branch_68867.rs:+6:49: +6:50
           StorageDead(_12);                // scope 0 at $DIR/early_otherwise_branch_68867.rs:+6:49: +6:50
@@ -158,9 +152,7 @@
           _19 = Add(move _20, move _21);   // scope 2 at $DIR/early_otherwise_branch_68867.rs:+7:38: +7:49
           StorageDead(_21);                // scope 2 at $DIR/early_otherwise_branch_68867.rs:+7:48: +7:49
           StorageDead(_20);                // scope 2 at $DIR/early_otherwise_branch_68867.rs:+7:48: +7:49
-          Deinit(_3);                      // scope 2 at $DIR/early_otherwise_branch_68867.rs:+7:35: +7:50
-          ((_3 as Vh).0: f32) = move _19;  // scope 2 at $DIR/early_otherwise_branch_68867.rs:+7:35: +7:50
-          discriminant(_3) = 1;            // scope 2 at $DIR/early_otherwise_branch_68867.rs:+7:35: +7:50
+          _3 = ViewportPercentageLength::Vh(move _19); // scope 2 at $DIR/early_otherwise_branch_68867.rs:+7:35: +7:50
           StorageDead(_19);                // scope 2 at $DIR/early_otherwise_branch_68867.rs:+7:49: +7:50
           StorageDead(_18);                // scope 0 at $DIR/early_otherwise_branch_68867.rs:+7:49: +7:50
           StorageDead(_17);                // scope 0 at $DIR/early_otherwise_branch_68867.rs:+7:49: +7:50
@@ -182,9 +174,7 @@
           _24 = Add(move _25, move _26);   // scope 3 at $DIR/early_otherwise_branch_68867.rs:+8:44: +8:55
           StorageDead(_26);                // scope 3 at $DIR/early_otherwise_branch_68867.rs:+8:54: +8:55
           StorageDead(_25);                // scope 3 at $DIR/early_otherwise_branch_68867.rs:+8:54: +8:55
-          Deinit(_3);                      // scope 3 at $DIR/early_otherwise_branch_68867.rs:+8:39: +8:56
-          ((_3 as Vmin).0: f32) = move _24; // scope 3 at $DIR/early_otherwise_branch_68867.rs:+8:39: +8:56
-          discriminant(_3) = 2;            // scope 3 at $DIR/early_otherwise_branch_68867.rs:+8:39: +8:56
+          _3 = ViewportPercentageLength::Vmin(move _24); // scope 3 at $DIR/early_otherwise_branch_68867.rs:+8:39: +8:56
           StorageDead(_24);                // scope 3 at $DIR/early_otherwise_branch_68867.rs:+8:55: +8:56
           StorageDead(_23);                // scope 0 at $DIR/early_otherwise_branch_68867.rs:+8:55: +8:56
           StorageDead(_22);                // scope 0 at $DIR/early_otherwise_branch_68867.rs:+8:55: +8:56
@@ -206,9 +196,7 @@
           _29 = Add(move _30, move _31);   // scope 4 at $DIR/early_otherwise_branch_68867.rs:+9:44: +9:55
           StorageDead(_31);                // scope 4 at $DIR/early_otherwise_branch_68867.rs:+9:54: +9:55
           StorageDead(_30);                // scope 4 at $DIR/early_otherwise_branch_68867.rs:+9:54: +9:55
-          Deinit(_3);                      // scope 4 at $DIR/early_otherwise_branch_68867.rs:+9:39: +9:56
-          ((_3 as Vmax).0: f32) = move _29; // scope 4 at $DIR/early_otherwise_branch_68867.rs:+9:39: +9:56
-          discriminant(_3) = 3;            // scope 4 at $DIR/early_otherwise_branch_68867.rs:+9:39: +9:56
+          _3 = ViewportPercentageLength::Vmax(move _29); // scope 4 at $DIR/early_otherwise_branch_68867.rs:+9:39: +9:56
           StorageDead(_29);                // scope 4 at $DIR/early_otherwise_branch_68867.rs:+9:55: +9:56
           StorageDead(_28);                // scope 0 at $DIR/early_otherwise_branch_68867.rs:+9:55: +9:56
           StorageDead(_27);                // scope 0 at $DIR/early_otherwise_branch_68867.rs:+9:55: +9:56
@@ -216,9 +204,7 @@
       }
   
       bb10: {
-          Deinit(_0);                      // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:5: +11:7
-          ((_0 as Ok).0: ViewportPercentageLength) = move _3; // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:5: +11:7
-          discriminant(_0) = 0;            // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:5: +11:7
+          _0 = Result::<ViewportPercentageLength, ()>::Ok(move _3); // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:5: +11:7
           StorageDead(_3);                 // scope 0 at $DIR/early_otherwise_branch_68867.rs:+11:6: +11:7
           StorageDead(_4);                 // scope 0 at $DIR/early_otherwise_branch_68867.rs:+12:1: +12:2
           goto -> bb11;                    // scope 0 at $DIR/early_otherwise_branch_68867.rs:+12:2: +12:2
diff --git a/tests/mir-opt/early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff b/tests/mir-opt/early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff
index 82d8b2fc5a4..6468eb5f8dd 100644
--- a/tests/mir-opt/early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff
+++ b/tests/mir-opt/early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff
@@ -32,9 +32,7 @@
           _4 = _1;                         // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:12: +1:13
           StorageLive(_5);                 // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:15: +1:16
           _5 = _2;                         // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:15: +1:16
-          Deinit(_3);                      // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:11: +1:17
-          (_3.0: std::option::Option<u32>) = move _4; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:11: +1:17
-          (_3.1: std::option::Option<u32>) = move _5; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:11: +1:17
+          _3 = (move _4, move _5);         // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:11: +1:17
           StorageDead(_5);                 // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:16: +1:17
           StorageDead(_4);                 // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:16: +1:17
           _8 = discriminant((_3.0: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:11: +1:17
diff --git a/tests/mir-opt/funky_arms.float_to_exponential_common.ConstProp.diff b/tests/mir-opt/funky_arms.float_to_exponential_common.ConstProp.diff
index 7c5d28069d5..5ebaacd4ba9 100644
--- a/tests/mir-opt/funky_arms.float_to_exponential_common.ConstProp.diff
+++ b/tests/mir-opt/funky_arms.float_to_exponential_common.ConstProp.diff
@@ -51,14 +51,20 @@
       }
   
       bb2: {
-          Deinit(_6);                      // scope 1 at $DIR/funky_arms.rs:+10:17: +10:41
-          discriminant(_6) = 1;            // scope 1 at $DIR/funky_arms.rs:+10:17: +10:41
+-         _6 = MinusPlus;                  // scope 1 at $DIR/funky_arms.rs:+10:17: +10:41
++         _6 = const MinusPlus;            // scope 1 at $DIR/funky_arms.rs:+10:17: +10:41
++                                          // mir::Constant
++                                          // + span: $DIR/funky_arms.rs:21:17: 21:41
++                                          // + literal: Const { ty: Sign, val: Value(Scalar(0x01)) }
           goto -> bb4;                     // scope 1 at $DIR/funky_arms.rs:+10:17: +10:41
       }
   
       bb3: {
-          Deinit(_6);                      // scope 1 at $DIR/funky_arms.rs:+9:18: +9:38
-          discriminant(_6) = 0;            // scope 1 at $DIR/funky_arms.rs:+9:18: +9:38
+-         _6 = Minus;                      // scope 1 at $DIR/funky_arms.rs:+9:18: +9:38
++         _6 = const Minus;                // scope 1 at $DIR/funky_arms.rs:+9:18: +9:38
++                                          // mir::Constant
++                                          // + span: $DIR/funky_arms.rs:20:18: 20:38
++                                          // + literal: Const { ty: Sign, val: Value(Scalar(0x00)) }
           goto -> bb4;                     // scope 1 at $DIR/funky_arms.rs:+9:18: +9:38
       }
   
diff --git a/tests/mir-opt/generator_tiny.main-{closure#0}.generator_resume.0.mir b/tests/mir-opt/generator_tiny.main-{closure#0}.generator_resume.0.mir
index 2f096c3e0a1..7efda05d2b8 100644
--- a/tests/mir-opt/generator_tiny.main-{closure#0}.generator_resume.0.mir
+++ b/tests/mir-opt/generator_tiny.main-{closure#0}.generator_resume.0.mir
@@ -54,9 +54,7 @@ fn main::{closure#0}(_1: Pin<&mut [generator@$DIR/generator_tiny.rs:19:16: 19:24
         StorageLive(_6);                 // scope 1 at $DIR/generator_tiny.rs:+3:13: +3:18
         StorageLive(_7);                 // scope 1 at $DIR/generator_tiny.rs:+3:13: +3:18
         _7 = ();                         // scope 1 at $DIR/generator_tiny.rs:+3:13: +3:18
-        Deinit(_0);                      // scope 1 at $DIR/generator_tiny.rs:+3:13: +3:18
-        ((_0 as Yielded).0: ()) = move _7; // scope 1 at $DIR/generator_tiny.rs:+3:13: +3:18
-        discriminant(_0) = 0;            // scope 1 at $DIR/generator_tiny.rs:+3:13: +3:18
+        _0 = GeneratorState::<(), ()>::Yielded(move _7); // scope 1 at $DIR/generator_tiny.rs:+3:13: +3:18
         discriminant((*(_1.0: &mut [generator@$DIR/generator_tiny.rs:19:16: 19:24]))) = 3; // scope 1 at $DIR/generator_tiny.rs:+3:13: +3:18
         return;                          // scope 1 at $DIR/generator_tiny.rs:+3:13: +3:18
     }
diff --git a/tests/mir-opt/inline/cycle.f.Inline.diff b/tests/mir-opt/inline/cycle.f.Inline.diff
index 75ea69a42eb..501390c3bf1 100644
--- a/tests/mir-opt/inline/cycle.f.Inline.diff
+++ b/tests/mir-opt/inline/cycle.f.Inline.diff
@@ -13,7 +13,7 @@
           StorageLive(_3);                 // scope 0 at $DIR/cycle.rs:+1:5: +1:6
           _3 = &_1;                        // scope 0 at $DIR/cycle.rs:+1:5: +1:6
           StorageLive(_4);                 // scope 0 at $DIR/cycle.rs:+1:5: +1:8
-          Deinit(_4);                      // scope 0 at $DIR/cycle.rs:+1:5: +1:8
+          _4 = ();                         // scope 0 at $DIR/cycle.rs:+1:5: +1:8
           _2 = <impl Fn() as Fn<()>>::call(move _3, move _4) -> [return: bb1, unwind: bb3]; // scope 0 at $DIR/cycle.rs:+1:5: +1:8
                                            // mir::Constant
                                            // + span: $DIR/cycle.rs:6:5: 6:6
diff --git a/tests/mir-opt/inline/inline_closure.foo.Inline.after.mir b/tests/mir-opt/inline/inline_closure.foo.Inline.after.mir
index 9eb3a01eef9..fff8d017127 100644
--- a/tests/mir-opt/inline/inline_closure.foo.Inline.after.mir
+++ b/tests/mir-opt/inline/inline_closure.foo.Inline.after.mir
@@ -21,7 +21,15 @@ fn foo(_1: T, _2: i32) -> i32 {
 
     bb0: {
         StorageLive(_3);                 // scope 0 at $DIR/inline_closure.rs:+1:9: +1:10
-        Deinit(_3);                      // scope 0 at $DIR/inline_closure.rs:+1:13: +1:24
+        _3 = [closure@foo::<T>::{closure#0}]; // scope 0 at $DIR/inline_closure.rs:+1:13: +1:24
+                                         // closure
+                                         // + def_id: DefId(0:6 ~ inline_closure[92ba]::foo::{closure#0})
+                                         // + substs: [
+                                         //     T,
+                                         //     i8,
+                                         //     extern "rust-call" fn((i32, i32)) -> i32,
+                                         //     (),
+                                         // ]
         StorageLive(_4);                 // scope 1 at $DIR/inline_closure.rs:+2:5: +2:6
         _4 = &_3;                        // scope 1 at $DIR/inline_closure.rs:+2:5: +2:6
         StorageLive(_5);                 // scope 1 at $DIR/inline_closure.rs:+2:5: +2:12
@@ -29,9 +37,7 @@ fn foo(_1: T, _2: i32) -> i32 {
         _6 = _2;                         // scope 1 at $DIR/inline_closure.rs:+2:7: +2:8
         StorageLive(_7);                 // scope 1 at $DIR/inline_closure.rs:+2:10: +2:11
         _7 = _2;                         // scope 1 at $DIR/inline_closure.rs:+2:10: +2:11
-        Deinit(_5);                      // scope 1 at $DIR/inline_closure.rs:+2:5: +2:12
-        (_5.0: i32) = move _6;           // scope 1 at $DIR/inline_closure.rs:+2:5: +2:12
-        (_5.1: i32) = move _7;           // scope 1 at $DIR/inline_closure.rs:+2:5: +2:12
+        _5 = (move _6, move _7);         // scope 1 at $DIR/inline_closure.rs:+2:5: +2:12
         StorageLive(_8);                 // scope 1 at $DIR/inline_closure.rs:+2:5: +2:12
         _8 = move (_5.0: i32);           // scope 1 at $DIR/inline_closure.rs:+2:5: +2:12
         StorageLive(_9);                 // scope 1 at $DIR/inline_closure.rs:+2:5: +2:12
diff --git a/tests/mir-opt/inline/inline_closure_borrows_arg.foo.Inline.after.mir b/tests/mir-opt/inline/inline_closure_borrows_arg.foo.Inline.after.mir
index dd32eb2d8d1..dab2043064f 100644
--- a/tests/mir-opt/inline/inline_closure_borrows_arg.foo.Inline.after.mir
+++ b/tests/mir-opt/inline/inline_closure_borrows_arg.foo.Inline.after.mir
@@ -24,7 +24,15 @@ fn foo(_1: T, _2: &i32) -> i32 {
 
     bb0: {
         StorageLive(_3);                 // scope 0 at $DIR/inline_closure_borrows_arg.rs:+1:9: +1:10
-        Deinit(_3);                      // scope 0 at $DIR/inline_closure_borrows_arg.rs:+1:13: +4:6
+        _3 = [closure@foo::<T>::{closure#0}]; // scope 0 at $DIR/inline_closure_borrows_arg.rs:+1:13: +4:6
+                                         // closure
+                                         // + def_id: DefId(0:6 ~ inline_closure_borrows_arg[96e9]::foo::{closure#0})
+                                         // + substs: [
+                                         //     T,
+                                         //     i8,
+                                         //     for<'a, 'b> extern "rust-call" fn((&'a i32, &'b i32)) -> i32,
+                                         //     (),
+                                         // ]
         StorageLive(_4);                 // scope 1 at $DIR/inline_closure_borrows_arg.rs:+5:5: +5:6
         _4 = &_3;                        // scope 1 at $DIR/inline_closure_borrows_arg.rs:+5:5: +5:6
         StorageLive(_5);                 // scope 1 at $DIR/inline_closure_borrows_arg.rs:+5:5: +5:12
@@ -32,9 +40,7 @@ fn foo(_1: T, _2: &i32) -> i32 {
         _6 = &(*_2);                     // scope 1 at $DIR/inline_closure_borrows_arg.rs:+5:7: +5:8
         StorageLive(_7);                 // scope 1 at $DIR/inline_closure_borrows_arg.rs:+5:10: +5:11
         _7 = &(*_2);                     // scope 1 at $DIR/inline_closure_borrows_arg.rs:+5:10: +5:11
-        Deinit(_5);                      // scope 1 at $DIR/inline_closure_borrows_arg.rs:+5:5: +5:12
-        (_5.0: &i32) = move _6;          // scope 1 at $DIR/inline_closure_borrows_arg.rs:+5:5: +5:12
-        (_5.1: &i32) = move _7;          // scope 1 at $DIR/inline_closure_borrows_arg.rs:+5:5: +5:12
+        _5 = (move _6, move _7);         // scope 1 at $DIR/inline_closure_borrows_arg.rs:+5:5: +5:12
         StorageLive(_8);                 // scope 1 at $DIR/inline_closure_borrows_arg.rs:+5:5: +5:12
         _8 = move (_5.0: &i32);          // scope 1 at $DIR/inline_closure_borrows_arg.rs:+5:5: +5:12
         StorageLive(_9);                 // scope 1 at $DIR/inline_closure_borrows_arg.rs:+5:5: +5:12
diff --git a/tests/mir-opt/inline/inline_closure_captures.foo.Inline.after.mir b/tests/mir-opt/inline/inline_closure_captures.foo.Inline.after.mir
index fd19c288666..84fd051e0a3 100644
--- a/tests/mir-opt/inline/inline_closure_captures.foo.Inline.after.mir
+++ b/tests/mir-opt/inline/inline_closure_captures.foo.Inline.after.mir
@@ -30,9 +30,15 @@ fn foo(_1: T, _2: i32) -> (i32, T) {
         _4 = &_2;                        // scope 0 at $DIR/inline_closure_captures.rs:+1:13: +1:24
         StorageLive(_5);                 // scope 0 at $DIR/inline_closure_captures.rs:+1:13: +1:24
         _5 = &_1;                        // scope 0 at $DIR/inline_closure_captures.rs:+1:13: +1:24
-        Deinit(_3);                      // scope 0 at $DIR/inline_closure_captures.rs:+1:13: +1:24
-        (_3.0: &i32) = move _4;          // scope 0 at $DIR/inline_closure_captures.rs:+1:13: +1:24
-        (_3.1: &T) = move _5;            // scope 0 at $DIR/inline_closure_captures.rs:+1:13: +1:24
+        _3 = [closure@foo::<T>::{closure#0}] { q: move _4, t: move _5 }; // scope 0 at $DIR/inline_closure_captures.rs:+1:13: +1:24
+                                         // closure
+                                         // + def_id: DefId(0:6 ~ inline_closure_captures[8bc0]::foo::{closure#0})
+                                         // + substs: [
+                                         //     T,
+                                         //     i8,
+                                         //     extern "rust-call" fn((i32,)) -> (i32, T),
+                                         //     (&i32, &T),
+                                         // ]
         StorageDead(_5);                 // scope 0 at $DIR/inline_closure_captures.rs:+1:16: +1:17
         StorageDead(_4);                 // scope 0 at $DIR/inline_closure_captures.rs:+1:16: +1:17
         StorageLive(_6);                 // scope 1 at $DIR/inline_closure_captures.rs:+2:5: +2:6
@@ -40,8 +46,7 @@ fn foo(_1: T, _2: i32) -> (i32, T) {
         StorageLive(_7);                 // scope 1 at $DIR/inline_closure_captures.rs:+2:5: +2:9
         StorageLive(_8);                 // scope 1 at $DIR/inline_closure_captures.rs:+2:7: +2:8
         _8 = _2;                         // scope 1 at $DIR/inline_closure_captures.rs:+2:7: +2:8
-        Deinit(_7);                      // scope 1 at $DIR/inline_closure_captures.rs:+2:5: +2:9
-        (_7.0: i32) = move _8;           // scope 1 at $DIR/inline_closure_captures.rs:+2:5: +2:9
+        _7 = (move _8,);                 // scope 1 at $DIR/inline_closure_captures.rs:+2:5: +2:9
         StorageLive(_9);                 // scope 1 at $DIR/inline_closure_captures.rs:+2:5: +2:9
         _9 = move (_7.0: i32);           // scope 1 at $DIR/inline_closure_captures.rs:+2:5: +2:9
         StorageLive(_10);                // scope 2 at $DIR/inline_closure_captures.rs:+1:19: +1:20
@@ -50,9 +55,7 @@ fn foo(_1: T, _2: i32) -> (i32, T) {
         StorageLive(_11);                // scope 2 at $DIR/inline_closure_captures.rs:+1:22: +1:23
         _13 = deref_copy ((*_6).1: &T);  // scope 2 at $DIR/inline_closure_captures.rs:+1:22: +1:23
         _11 = (*_13);                    // scope 2 at $DIR/inline_closure_captures.rs:+1:22: +1:23
-        Deinit(_0);                      // scope 2 at $DIR/inline_closure_captures.rs:+1:18: +1:24
-        (_0.0: i32) = move _10;          // scope 2 at $DIR/inline_closure_captures.rs:+1:18: +1:24
-        (_0.1: T) = move _11;            // scope 2 at $DIR/inline_closure_captures.rs:+1:18: +1:24
+        _0 = (move _10, move _11);       // scope 2 at $DIR/inline_closure_captures.rs:+1:18: +1:24
         StorageDead(_11);                // scope 2 at $DIR/inline_closure_captures.rs:+1:23: +1:24
         StorageDead(_10);                // scope 2 at $DIR/inline_closure_captures.rs:+1:23: +1:24
         StorageDead(_9);                 // scope 1 at $DIR/inline_closure_captures.rs:+2:5: +2:9
diff --git a/tests/mir-opt/inline/inline_diverging.h.Inline.diff b/tests/mir-opt/inline/inline_diverging.h.Inline.diff
index f82fcf4c821..e1b2f7dbf35 100644
--- a/tests/mir-opt/inline/inline_diverging.h.Inline.diff
+++ b/tests/mir-opt/inline/inline_diverging.h.Inline.diff
@@ -48,9 +48,7 @@
 +         StorageDead(_6);                 // scope 2 at $DIR/inline_diverging.rs:28:15: 28:16
 +         StorageLive(_8);                 // scope 3 at $DIR/inline_diverging.rs:29:6: 29:7
 +         _8 = move _3;                    // scope 3 at $DIR/inline_diverging.rs:29:6: 29:7
-+         Deinit(_1);                      // scope 3 at $DIR/inline_diverging.rs:29:5: 29:11
-+         (_1.0: !) = move _8;             // scope 3 at $DIR/inline_diverging.rs:29:5: 29:11
-+         (_1.1: !) = move _9;             // scope 3 at $DIR/inline_diverging.rs:29:5: 29:11
++         _1 = (move _8, move _9);         // scope 3 at $DIR/inline_diverging.rs:29:5: 29:11
 +         StorageDead(_8);                 // scope 3 at $DIR/inline_diverging.rs:29:10: 29:11
 +         StorageDead(_3);                 // scope 1 at $DIR/inline_diverging.rs:30:1: 30:2
 +         drop(_2) -> bb2;                 // scope 1 at $DIR/inline_diverging.rs:30:1: 30:2
diff --git a/tests/mir-opt/inline/inline_generator.main.Inline.diff b/tests/mir-opt/inline/inline_generator.main.Inline.diff
index 57574acf923..95d649f89ba 100644
--- a/tests/mir-opt/inline/inline_generator.main.Inline.diff
+++ b/tests/mir-opt/inline/inline_generator.main.Inline.diff
@@ -44,8 +44,17 @@
 -     }
 - 
 -     bb1: {
-+         Deinit(_4);                      // scope 2 at $DIR/inline_generator.rs:15:5: 15:41
-+         discriminant(_4) = 0;            // scope 2 at $DIR/inline_generator.rs:15:5: 15:41
++         _4 = [generator@$DIR/inline_generator.rs:15:5: 15:8 (#0)]; // scope 2 at $DIR/inline_generator.rs:15:5: 15:41
++                                          // generator
++                                          // + def_id: DefId(0:7 ~ inline_generator[ea31]::g::{closure#0})
++                                          // + substs: [
++                                          //     bool,
++                                          //     i32,
++                                          //     bool,
++                                          //     {bool, i32},
++                                          //     (),
++                                          // ]
++                                          // + movability: Movable
           _3 = &mut _4;                    // scope 0 at $DIR/inline_generator.rs:+1:23: +1:31
 -         _2 = Pin::<&mut [generator@$DIR/inline_generator.rs:15:5: 15:8]>::new(move _3) -> [return: bb2, unwind: bb4]; // scope 0 at $DIR/inline_generator.rs:+1:14: +1:32
 -                                          // mir::Constant
@@ -59,8 +68,7 @@
 +         _5 = move _3;                    // scope 4 at $SRC_DIR/core/src/pin.rs:LL:COL
 +         StorageLive(_6);                 // scope 5 at $SRC_DIR/core/src/pin.rs:LL:COL
 +         _6 = move _5;                    // scope 5 at $SRC_DIR/core/src/pin.rs:LL:COL
-+         Deinit(_2);                      // scope 5 at $SRC_DIR/core/src/pin.rs:LL:COL
-+         (_2.0: &mut [generator@$DIR/inline_generator.rs:15:5: 15:8]) = move _6; // scope 5 at $SRC_DIR/core/src/pin.rs:LL:COL
++         _2 = Pin::<&mut [generator@$DIR/inline_generator.rs:15:5: 15:8]> { pointer: move _6 }; // scope 5 at $SRC_DIR/core/src/pin.rs:LL:COL
 +         StorageDead(_6);                 // scope 5 at $SRC_DIR/core/src/pin.rs:LL:COL
 +         StorageDead(_5);                 // scope 4 at $SRC_DIR/core/src/pin.rs:LL:COL
           StorageDead(_3);                 // scope 0 at $DIR/inline_generator.rs:+1:31: +1:32
@@ -106,9 +114,7 @@
 +     }
 + 
 +     bb6: {
-+         Deinit(_1);                      // scope 6 at $DIR/inline_generator.rs:15:11: 15:39
-+         ((_1 as Yielded).0: i32) = move _8; // scope 6 at $DIR/inline_generator.rs:15:11: 15:39
-+         discriminant(_1) = 0;            // scope 6 at $DIR/inline_generator.rs:15:11: 15:39
++         _1 = GeneratorState::<i32, bool>::Yielded(move _8); // scope 6 at $DIR/inline_generator.rs:15:11: 15:39
 +         _11 = deref_copy (_2.0: &mut [generator@$DIR/inline_generator.rs:15:5: 15:8]); // scope 6 at $DIR/inline_generator.rs:15:11: 15:39
 +         discriminant((*_11)) = 3;        // scope 6 at $DIR/inline_generator.rs:15:11: 15:39
 +         goto -> bb1;                     // scope 0 at $DIR/inline_generator.rs:15:11: 15:39
@@ -117,9 +123,7 @@
 +     bb7: {
 +         StorageLive(_8);                 // scope 6 at $DIR/inline_generator.rs:15:5: 15:41
 +         StorageDead(_8);                 // scope 6 at $DIR/inline_generator.rs:15:38: 15:39
-+         Deinit(_1);                      // scope 6 at $DIR/inline_generator.rs:15:41: 15:41
-+         ((_1 as Complete).0: bool) = _7; // scope 6 at $DIR/inline_generator.rs:15:41: 15:41
-+         discriminant(_1) = 1;            // scope 6 at $DIR/inline_generator.rs:15:41: 15:41
++         _1 = GeneratorState::<i32, bool>::Complete(_7); // scope 6 at $DIR/inline_generator.rs:15:41: 15:41
 +         _12 = deref_copy (_2.0: &mut [generator@$DIR/inline_generator.rs:15:5: 15:8]); // scope 6 at $DIR/inline_generator.rs:15:41: 15:41
 +         discriminant((*_12)) = 1;        // scope 6 at $DIR/inline_generator.rs:15:41: 15:41
 +         goto -> bb1;                     // scope 0 at $DIR/inline_generator.rs:15:41: 15:41
diff --git a/tests/mir-opt/inline/inline_into_box_place.main.Inline.diff b/tests/mir-opt/inline/inline_into_box_place.main.Inline.diff
index a28da146e37..a1cbf0d3e0d 100644
--- a/tests/mir-opt/inline/inline_into_box_place.main.Inline.diff
+++ b/tests/mir-opt/inline/inline_into_box_place.main.Inline.diff
@@ -51,9 +51,7 @@
 +                                          // + span: $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
 +                                          // + user_ty: UserType(0)
 +                                          // + literal: Const { ty: alloc::raw_vec::RawVec<u32>, val: Unevaluated(alloc::raw_vec::RawVec::<T>::NEW, [u32], None) }
-+         Deinit(_9);                      // scope 3 at $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
-+         (_9.0: alloc::raw_vec::RawVec<u32>) = move _10; // scope 3 at $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
-+         (_9.1: usize) = const 0_usize;   // scope 3 at $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
++         _9 = Vec::<u32> { buf: move _10, len: const 0_usize }; // scope 3 at $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
 +         StorageDead(_10);                // scope 3 at $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
 +         (*_8) = move _9;                 // scope 0 at $DIR/inline_into_box_place.rs:+1:33: +1:43
 +         StorageDead(_9);                 // scope 0 at $DIR/inline_into_box_place.rs:+1:33: +1:43
diff --git a/tests/mir-opt/inline/issue_76997_inline_scopes_parenting.main.Inline.after.mir b/tests/mir-opt/inline/issue_76997_inline_scopes_parenting.main.Inline.after.mir
index d99ae1a6c7c..4dd1aad489d 100644
--- a/tests/mir-opt/inline/issue_76997_inline_scopes_parenting.main.Inline.after.mir
+++ b/tests/mir-opt/inline/issue_76997_inline_scopes_parenting.main.Inline.after.mir
@@ -20,14 +20,20 @@ fn main() -> () {
 
     bb0: {
         StorageLive(_1);                 // scope 0 at $DIR/issue_76997_inline_scopes_parenting.rs:+1:9: +1:10
-        Deinit(_1);                      // scope 0 at $DIR/issue_76997_inline_scopes_parenting.rs:+1:13: +1:33
+        _1 = [closure@$DIR/issue_76997_inline_scopes_parenting.rs:5:13: 5:16]; // scope 0 at $DIR/issue_76997_inline_scopes_parenting.rs:+1:13: +1:33
+                                         // closure
+                                         // + def_id: DefId(0:4 ~ issue_76997_inline_scopes_parenting[bc59]::main::{closure#0})
+                                         // + substs: [
+                                         //     i8,
+                                         //     extern "rust-call" fn(((),)),
+                                         //     (),
+                                         // ]
         StorageLive(_2);                 // scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+2:5: +2:6
         _2 = &_1;                        // scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+2:5: +2:6
         StorageLive(_3);                 // scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+2:5: +2:10
         StorageLive(_4);                 // scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+2:7: +2:9
-        Deinit(_4);                      // scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+2:7: +2:9
-        Deinit(_3);                      // scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+2:5: +2:10
-        (_3.0: ()) = move _4;            // scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+2:5: +2:10
+        _4 = ();                         // scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+2:7: +2:9
+        _3 = (move _4,);                 // scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+2:5: +2:10
         StorageLive(_5);                 // scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+2:5: +2:10
         _5 = move (_3.0: ());            // scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+2:5: +2:10
         StorageLive(_6);                 // scope 2 at $DIR/issue_76997_inline_scopes_parenting.rs:+1:23: +1:24
diff --git a/tests/mir-opt/inline/issue_78442.bar.Inline.diff b/tests/mir-opt/inline/issue_78442.bar.Inline.diff
index 51a98465fd9..aa62e4a165e 100644
--- a/tests/mir-opt/inline/issue_78442.bar.Inline.diff
+++ b/tests/mir-opt/inline/issue_78442.bar.Inline.diff
@@ -25,7 +25,7 @@
       bb1: {
           _3 = &_4;                        // scope 0 at $DIR/issue_78442.rs:+4:5: +4:15
           StorageLive(_5);                 // scope 0 at $DIR/issue_78442.rs:+4:5: +4:17
-          Deinit(_5);                      // scope 0 at $DIR/issue_78442.rs:+4:5: +4:17
+          _5 = ();                         // scope 0 at $DIR/issue_78442.rs:+4:5: +4:17
 -         _2 = <fn() {foo} as Fn<()>>::call(move _3, move _5) -> [return: bb2, unwind: bb4]; // scope 0 at $DIR/issue_78442.rs:+4:5: +4:17
 -                                          // mir::Constant
 -                                          // + span: $DIR/issue_78442.rs:11:5: 11:15
diff --git a/tests/mir-opt/inline/issue_78442.bar.RevealAll.diff b/tests/mir-opt/inline/issue_78442.bar.RevealAll.diff
index e47466c5e80..21055c6bfb5 100644
--- a/tests/mir-opt/inline/issue_78442.bar.RevealAll.diff
+++ b/tests/mir-opt/inline/issue_78442.bar.RevealAll.diff
@@ -24,7 +24,7 @@
       bb1: {
           _3 = &_4;                        // scope 0 at $DIR/issue_78442.rs:+4:5: +4:15
           StorageLive(_5);                 // scope 0 at $DIR/issue_78442.rs:+4:5: +4:17
-          Deinit(_5);                      // scope 0 at $DIR/issue_78442.rs:+4:5: +4:17
+          _5 = ();                         // scope 0 at $DIR/issue_78442.rs:+4:5: +4:17
 -         _2 = <impl Fn() as Fn<()>>::call(move _3, move _5) -> [return: bb2, unwind: bb4]; // scope 0 at $DIR/issue_78442.rs:+4:5: +4:17
 +         _2 = <fn() {foo} as Fn<()>>::call(move _3, move _5) -> [return: bb2, unwind: bb4]; // scope 0 at $DIR/issue_78442.rs:+4:5: +4:17
                                            // mir::Constant
diff --git a/tests/mir-opt/issues/issue_75439.foo.MatchBranchSimplification.diff b/tests/mir-opt/issues/issue_75439.foo.MatchBranchSimplification.diff
index 93804780371..bcda1288045 100644
--- a/tests/mir-opt/issues/issue_75439.foo.MatchBranchSimplification.diff
+++ b/tests/mir-opt/issues/issue_75439.foo.MatchBranchSimplification.diff
@@ -67,17 +67,14 @@
   
       bb7: {
           StorageDead(_6);                 // scope 4 at $DIR/issue_75439.rs:+5:35: +5:36
-          Deinit(_0);                      // scope 3 at $DIR/issue_75439.rs:+5:9: +5:39
-          ((_0 as Some).0: [u8; 4]) = move _5; // scope 3 at $DIR/issue_75439.rs:+5:9: +5:39
-          discriminant(_0) = 1;            // scope 3 at $DIR/issue_75439.rs:+5:9: +5:39
+          _0 = Option::<[u8; 4]>::Some(move _5); // scope 3 at $DIR/issue_75439.rs:+5:9: +5:39
           StorageDead(_5);                 // scope 3 at $DIR/issue_75439.rs:+5:38: +5:39
           StorageDead(_4);                 // scope 1 at $DIR/issue_75439.rs:+6:5: +6:6
           goto -> bb9;                     // scope 1 at $DIR/issue_75439.rs:+4:5: +8:6
       }
   
       bb8: {
-          Deinit(_0);                      // scope 1 at $DIR/issue_75439.rs:+7:9: +7:13
-          discriminant(_0) = 0;            // scope 1 at $DIR/issue_75439.rs:+7:9: +7:13
+          _0 = Option::<[u8; 4]>::None;    // scope 1 at $DIR/issue_75439.rs:+7:9: +7:13
           goto -> bb9;                     // scope 1 at $DIR/issue_75439.rs:+4:5: +8:6
       }
   
diff --git a/tests/mir-opt/lower_intrinsics.f_copy_nonoverlapping.LowerIntrinsics.diff b/tests/mir-opt/lower_intrinsics.f_copy_nonoverlapping.LowerIntrinsics.diff
index ec15fd1ef74..5c972a00e46 100644
--- a/tests/mir-opt/lower_intrinsics.f_copy_nonoverlapping.LowerIntrinsics.diff
+++ b/tests/mir-opt/lower_intrinsics.f_copy_nonoverlapping.LowerIntrinsics.diff
@@ -25,9 +25,9 @@
   
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/lower_intrinsics.rs:+1:9: +1:12
-          Deinit(_1);                      // scope 0 at $DIR/lower_intrinsics.rs:+1:15: +1:17
+          _1 = ();                         // scope 0 at $DIR/lower_intrinsics.rs:+1:15: +1:17
           StorageLive(_2);                 // scope 1 at $DIR/lower_intrinsics.rs:+2:9: +2:16
-          Deinit(_2);                      // scope 1 at $DIR/lower_intrinsics.rs:+2:19: +2:21
+          _2 = ();                         // scope 1 at $DIR/lower_intrinsics.rs:+2:19: +2:21
           StorageLive(_3);                 // scope 3 at $DIR/lower_intrinsics.rs:+4:9: +4:95
           StorageLive(_4);                 // scope 3 at $DIR/lower_intrinsics.rs:+4:29: +4:59
           StorageLive(_5);                 // scope 3 at $DIR/lower_intrinsics.rs:+4:29: +4:45
diff --git a/tests/mir-opt/matches_reduce_branches.bar.MatchBranchSimplification.diff b/tests/mir-opt/matches_reduce_branches.bar.MatchBranchSimplification.diff
index be91b0bfe68..92f8d4e14ab 100644
--- a/tests/mir-opt/matches_reduce_branches.bar.MatchBranchSimplification.diff
+++ b/tests/mir-opt/matches_reduce_branches.bar.MatchBranchSimplification.diff
@@ -41,7 +41,7 @@
 -         _3 = const false;                // scope 4 at $DIR/matches_reduce_branches.rs:+16:13: +16:22
 -         _4 = const false;                // scope 4 at $DIR/matches_reduce_branches.rs:+17:13: +17:22
 -         _5 = const true;                 // scope 4 at $DIR/matches_reduce_branches.rs:+18:13: +18:21
--         Deinit(_6);                      // scope 4 at $DIR/matches_reduce_branches.rs:+19:13: +19:15
+-         _6 = ();                         // scope 4 at $DIR/matches_reduce_branches.rs:+19:13: +19:15
 -         goto -> bb3;                     // scope 4 at $DIR/matches_reduce_branches.rs:+19:13: +19:15
 -     }
 - 
@@ -54,7 +54,7 @@
 +         _3 = Eq(_11, const 7_i32);       // scope 4 at $DIR/matches_reduce_branches.rs:+9:13: +9:21
           _4 = const false;                // scope 4 at $DIR/matches_reduce_branches.rs:+10:13: +10:22
           _5 = const true;                 // scope 4 at $DIR/matches_reduce_branches.rs:+11:13: +11:21
-          Deinit(_6);                      // scope 4 at $DIR/matches_reduce_branches.rs:+12:13: +12:15
+          _6 = ();                         // scope 4 at $DIR/matches_reduce_branches.rs:+12:13: +12:15
 -         goto -> bb3;                     // scope 4 at $DIR/matches_reduce_branches.rs:+12:13: +12:15
 -     }
 - 
@@ -69,11 +69,7 @@
           _9 = _4;                         // scope 4 at $DIR/matches_reduce_branches.rs:+23:12: +23:13
           StorageLive(_10);                // scope 4 at $DIR/matches_reduce_branches.rs:+23:15: +23:16
           _10 = _5;                        // scope 4 at $DIR/matches_reduce_branches.rs:+23:15: +23:16
-          Deinit(_0);                      // scope 4 at $DIR/matches_reduce_branches.rs:+23:5: +23:17
-          (_0.0: bool) = move _7;          // scope 4 at $DIR/matches_reduce_branches.rs:+23:5: +23:17
-          (_0.1: bool) = move _8;          // scope 4 at $DIR/matches_reduce_branches.rs:+23:5: +23:17
-          (_0.2: bool) = move _9;          // scope 4 at $DIR/matches_reduce_branches.rs:+23:5: +23:17
-          (_0.3: bool) = move _10;         // scope 4 at $DIR/matches_reduce_branches.rs:+23:5: +23:17
+          _0 = (move _7, move _8, move _9, move _10); // scope 4 at $DIR/matches_reduce_branches.rs:+23:5: +23:17
           StorageDead(_10);                // scope 4 at $DIR/matches_reduce_branches.rs:+23:16: +23:17
           StorageDead(_9);                 // scope 4 at $DIR/matches_reduce_branches.rs:+23:16: +23:17
           StorageDead(_8);                 // scope 4 at $DIR/matches_reduce_branches.rs:+23:16: +23:17
diff --git a/tests/mir-opt/matches_reduce_branches.foo.MatchBranchSimplification.diff b/tests/mir-opt/matches_reduce_branches.foo.MatchBranchSimplification.diff
index aa8092ece66..0580f73341d 100644
--- a/tests/mir-opt/matches_reduce_branches.foo.MatchBranchSimplification.diff
+++ b/tests/mir-opt/matches_reduce_branches.foo.MatchBranchSimplification.diff
@@ -34,7 +34,7 @@
 -     }
 - 
 -     bb4: {
-          Deinit(_0);                      // scope 0 at $DIR/matches_reduce_branches.rs:+2:9: +2:11
+          _0 = ();                         // scope 0 at $DIR/matches_reduce_branches.rs:+2:9: +2:11
 -         goto -> bb6;                     // scope 0 at $DIR/matches_reduce_branches.rs:+1:5: +3:6
 +         goto -> bb3;                     // scope 0 at $DIR/matches_reduce_branches.rs:+1:5: +3:6
       }
diff --git a/tests/mir-opt/matches_reduce_branches.match_nested_if.MatchBranchSimplification.diff b/tests/mir-opt/matches_reduce_branches.match_nested_if.MatchBranchSimplification.diff
index 193104dd30e..20e8ef2f720 100644
--- a/tests/mir-opt/matches_reduce_branches.match_nested_if.MatchBranchSimplification.diff
+++ b/tests/mir-opt/matches_reduce_branches.match_nested_if.MatchBranchSimplification.diff
@@ -20,7 +20,7 @@
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/matches_reduce_branches.rs:+1:9: +1:12
           StorageLive(_2);                 // scope 0 at $DIR/matches_reduce_branches.rs:+1:21: +1:23
-          Deinit(_2);                      // scope 0 at $DIR/matches_reduce_branches.rs:+1:21: +1:23
+          _2 = ();                         // scope 0 at $DIR/matches_reduce_branches.rs:+1:21: +1:23
           StorageLive(_3);                 // scope 0 at $DIR/matches_reduce_branches.rs:+2:15: +6:10
           StorageLive(_4);                 // scope 0 at $DIR/matches_reduce_branches.rs:+2:18: +2:76
           StorageLive(_5);                 // scope 0 at $DIR/matches_reduce_branches.rs:+2:21: +2:52
diff --git a/tests/mir-opt/packed_struct_drop_aligned.main.SimplifyCfg-elaborate-drops.after.mir b/tests/mir-opt/packed_struct_drop_aligned.main.SimplifyCfg-elaborate-drops.after.mir
index e522534867d..210f178a0a9 100644
--- a/tests/mir-opt/packed_struct_drop_aligned.main.SimplifyCfg-elaborate-drops.after.mir
+++ b/tests/mir-opt/packed_struct_drop_aligned.main.SimplifyCfg-elaborate-drops.after.mir
@@ -16,20 +16,15 @@ fn main() -> () {
         StorageLive(_1);                 // scope 0 at $DIR/packed_struct_drop_aligned.rs:+1:9: +1:14
         StorageLive(_2);                 // scope 0 at $DIR/packed_struct_drop_aligned.rs:+1:24: +1:42
         StorageLive(_3);                 // scope 0 at $DIR/packed_struct_drop_aligned.rs:+1:32: +1:41
-        Deinit(_3);                      // scope 0 at $DIR/packed_struct_drop_aligned.rs:+1:32: +1:41
-        (_3.0: usize) = const 0_usize;   // scope 0 at $DIR/packed_struct_drop_aligned.rs:+1:32: +1:41
-        Deinit(_2);                      // scope 0 at $DIR/packed_struct_drop_aligned.rs:+1:24: +1:42
-        (_2.0: Droppy) = move _3;        // scope 0 at $DIR/packed_struct_drop_aligned.rs:+1:24: +1:42
+        _3 = Droppy(const 0_usize);      // scope 0 at $DIR/packed_struct_drop_aligned.rs:+1:32: +1:41
+        _2 = Aligned(move _3);           // scope 0 at $DIR/packed_struct_drop_aligned.rs:+1:24: +1:42
         StorageDead(_3);                 // scope 0 at $DIR/packed_struct_drop_aligned.rs:+1:41: +1:42
-        Deinit(_1);                      // scope 0 at $DIR/packed_struct_drop_aligned.rs:+1:17: +1:43
-        (_1.0: Aligned) = move _2;       // scope 0 at $DIR/packed_struct_drop_aligned.rs:+1:17: +1:43
+        _1 = Packed(move _2);            // scope 0 at $DIR/packed_struct_drop_aligned.rs:+1:17: +1:43
         StorageDead(_2);                 // scope 0 at $DIR/packed_struct_drop_aligned.rs:+1:42: +1:43
         StorageLive(_4);                 // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:11: +2:29
         StorageLive(_5);                 // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:19: +2:28
-        Deinit(_5);                      // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:19: +2:28
-        (_5.0: usize) = const 0_usize;   // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:19: +2:28
-        Deinit(_4);                      // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:11: +2:29
-        (_4.0: Droppy) = move _5;        // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:11: +2:29
+        _5 = Droppy(const 0_usize);      // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:19: +2:28
+        _4 = Aligned(move _5);           // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:11: +2:29
         StorageDead(_5);                 // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:28: +2:29
         StorageLive(_6);                 // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:5: +2:8
         _6 = move (_1.0: Aligned);       // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:5: +2:8
diff --git a/tests/mir-opt/remove_storage_markers.main.RemoveStorageMarkers.diff b/tests/mir-opt/remove_storage_markers.main.RemoveStorageMarkers.diff
index ed1d0b87f60..a8dd91efc37 100644
--- a/tests/mir-opt/remove_storage_markers.main.RemoveStorageMarkers.diff
+++ b/tests/mir-opt/remove_storage_markers.main.RemoveStorageMarkers.diff
@@ -31,9 +31,7 @@
           _1 = const 0_i32;                // scope 0 at $DIR/remove_storage_markers.rs:+1:19: +1:20
 -         StorageLive(_2);                 // scope 1 at $DIR/remove_storage_markers.rs:+2:14: +2:19
 -         StorageLive(_3);                 // scope 1 at $DIR/remove_storage_markers.rs:+2:14: +2:19
-          Deinit(_3);                      // scope 1 at $DIR/remove_storage_markers.rs:+2:14: +2:19
-          (_3.0: i32) = const 0_i32;       // scope 1 at $DIR/remove_storage_markers.rs:+2:14: +2:19
-          (_3.1: i32) = const 10_i32;      // scope 1 at $DIR/remove_storage_markers.rs:+2:14: +2:19
+          _3 = std::ops::Range::<i32> { start: const 0_i32, end: const 10_i32 }; // scope 1 at $DIR/remove_storage_markers.rs:+2:14: +2:19
           _2 = <std::ops::Range<i32> as IntoIterator>::into_iter(move _3) -> bb1; // scope 1 at $DIR/remove_storage_markers.rs:+2:14: +2:19
                                            // mir::Constant
                                            // + span: $DIR/remove_storage_markers.rs:10:14: 10:19
diff --git a/tests/mir-opt/remove_zsts.get_union.PreCodegen.after.mir b/tests/mir-opt/remove_zsts.get_union.PreCodegen.after.mir
index 12e914e25e0..af34bc5edb7 100644
--- a/tests/mir-opt/remove_zsts.get_union.PreCodegen.after.mir
+++ b/tests/mir-opt/remove_zsts.get_union.PreCodegen.after.mir
@@ -2,9 +2,12 @@
 
 fn get_union() -> Foo {
     let mut _0: Foo;                     // return place in scope 0 at $DIR/remove_zsts.rs:+0:19: +0:22
+    let mut _1: ();                      // in scope 0 at $DIR/remove_zsts.rs:+1:14: +1:16
 
     bb0: {
-        Deinit(_0);                      // scope 0 at $DIR/remove_zsts.rs:+1:5: +1:18
+        StorageLive(_1);                 // scope 0 at $DIR/remove_zsts.rs:+1:14: +1:16
+        _0 = Foo { x: move _1 };         // scope 0 at $DIR/remove_zsts.rs:+1:5: +1:18
+        StorageDead(_1);                 // scope 0 at $DIR/remove_zsts.rs:+1:17: +1:18
         return;                          // scope 0 at $DIR/remove_zsts.rs:+2:2: +2:2
     }
 }
diff --git a/tests/mir-opt/remove_zsts.get_union.RemoveZsts.diff b/tests/mir-opt/remove_zsts.get_union.RemoveZsts.diff
index 169b7b1054b..0af29b2babc 100644
--- a/tests/mir-opt/remove_zsts.get_union.RemoveZsts.diff
+++ b/tests/mir-opt/remove_zsts.get_union.RemoveZsts.diff
@@ -7,11 +7,9 @@
   
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/remove_zsts.rs:+1:14: +1:16
--         Deinit(_1);                      // scope 0 at $DIR/remove_zsts.rs:+1:14: +1:16
+-         _1 = ();                         // scope 0 at $DIR/remove_zsts.rs:+1:14: +1:16
 +         nop;                             // scope 0 at $DIR/remove_zsts.rs:+1:14: +1:16
-          Deinit(_0);                      // scope 0 at $DIR/remove_zsts.rs:+1:5: +1:18
--         (_0.0: ()) = move _1;            // scope 0 at $DIR/remove_zsts.rs:+1:5: +1:18
-+         nop;                             // scope 0 at $DIR/remove_zsts.rs:+1:5: +1:18
+          _0 = Foo { x: move _1 };         // scope 0 at $DIR/remove_zsts.rs:+1:5: +1:18
           StorageDead(_1);                 // scope 0 at $DIR/remove_zsts.rs:+1:17: +1:18
           return;                          // scope 0 at $DIR/remove_zsts.rs:+2:2: +2:2
       }
diff --git a/tests/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.mir b/tests/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.mir
index 19b726e7484..3b479710b4f 100644
--- a/tests/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.mir
+++ b/tests/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.mir
@@ -122,9 +122,7 @@ fn array_casts() -> () {
                                          // + literal: Const { ty: &usize, val: Unevaluated(array_casts, [], Some(promoted[0])) }
         Retag(_35);                      // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
         _18 = &(*_35);                   // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
-        Deinit(_13);                     // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
-        (_13.0: &usize) = move _14;      // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
-        (_13.1: &usize) = move _18;      // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
+        _13 = (move _14, move _18);      // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
         Retag(_13);                      // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
         StorageDead(_18);                // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
         StorageDead(_14);                // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
@@ -150,8 +148,7 @@ fn array_casts() -> () {
 
     bb3: {
         StorageLive(_27);                // scope 7 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
-        Deinit(_27);                     // scope 7 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
-        discriminant(_27) = 0;           // scope 7 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
+        _27 = core::panicking::AssertKind::Eq; // scope 7 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
         StorageLive(_28);                // scope 8 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
         StorageLive(_29);                // scope 8 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
         _29 = move _27;                  // scope 8 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
@@ -164,8 +161,7 @@ fn array_casts() -> () {
         _33 = &(*_21);                   // scope 8 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
         _32 = &(*_33);                   // scope 8 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
         StorageLive(_34);                // scope 8 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
-        Deinit(_34);                     // scope 8 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
-        discriminant(_34) = 0;           // scope 8 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
+        _34 = Option::<Arguments<'_>>::None; // scope 8 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
         Retag(_34);                      // scope 8 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
         _28 = core::panicking::assert_failed::<usize, usize>(move _29, move _30, move _32, move _34); // scope 8 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
                                          // mir::Constant
diff --git a/tests/mir-opt/retag.main.SimplifyCfg-elaborate-drops.after.mir b/tests/mir-opt/retag.main.SimplifyCfg-elaborate-drops.after.mir
index b853e450541..d7b6d64b6b7 100644
--- a/tests/mir-opt/retag.main.SimplifyCfg-elaborate-drops.after.mir
+++ b/tests/mir-opt/retag.main.SimplifyCfg-elaborate-drops.after.mir
@@ -62,8 +62,7 @@ fn main() -> () {
         StorageLive(_3);                 // scope 1 at $DIR/retag.rs:+3:13: +3:14
         StorageLive(_4);                 // scope 1 at $DIR/retag.rs:+3:17: +3:36
         StorageLive(_5);                 // scope 1 at $DIR/retag.rs:+3:17: +3:24
-        Deinit(_5);                      // scope 1 at $DIR/retag.rs:+3:17: +3:24
-        (_5.0: i32) = const 0_i32;       // scope 1 at $DIR/retag.rs:+3:17: +3:24
+        _5 = Test(const 0_i32);          // scope 1 at $DIR/retag.rs:+3:17: +3:24
         _4 = &_5;                        // scope 1 at $DIR/retag.rs:+3:17: +3:36
         StorageLive(_6);                 // scope 1 at $DIR/retag.rs:+3:29: +3:35
         StorageLive(_7);                 // scope 1 at $DIR/retag.rs:+3:29: +3:35
@@ -107,7 +106,14 @@ fn main() -> () {
         StorageDead(_2);                 // scope 1 at $DIR/retag.rs:+8:5: +8:6
         StorageLive(_13);                // scope 1 at $DIR/retag.rs:+11:9: +11:10
         StorageLive(_14);                // scope 1 at $DIR/retag.rs:+11:31: +14:6
-        Deinit(_14);                     // scope 1 at $DIR/retag.rs:+11:31: +14:6
+        _14 = [closure@main::{closure#0}]; // scope 1 at $DIR/retag.rs:+11:31: +14:6
+                                         // closure
+                                         // + def_id: DefId(0:14 ~ retag[4622]::main::{closure#0})
+                                         // + substs: [
+                                         //     i8,
+                                         //     for<'a> extern "rust-call" fn((&'a i32,)) -> &'a i32,
+                                         //     (),
+                                         // ]
         Retag(_14);                      // scope 1 at $DIR/retag.rs:+11:31: +14:6
         _13 = move _14 as for<'a> fn(&'a i32) -> &'a i32 (Pointer(ClosureFnPointer(Normal))); // scope 1 at $DIR/retag.rs:+11:31: +14:6
         StorageDead(_14);                // scope 1 at $DIR/retag.rs:+11:47: +11:48
@@ -129,8 +135,7 @@ fn main() -> () {
         StorageLive(_19);                // scope 7 at $DIR/retag.rs:+18:5: +18:24
         StorageLive(_20);                // scope 7 at $DIR/retag.rs:+18:5: +18:24
         StorageLive(_21);                // scope 7 at $DIR/retag.rs:+18:5: +18:12
-        Deinit(_21);                     // scope 7 at $DIR/retag.rs:+18:5: +18:12
-        (_21.0: i32) = const 0_i32;      // scope 7 at $DIR/retag.rs:+18:5: +18:12
+        _21 = Test(const 0_i32);         // scope 7 at $DIR/retag.rs:+18:5: +18:12
         _20 = &_21;                      // scope 7 at $DIR/retag.rs:+18:5: +18:24
         StorageLive(_22);                // scope 7 at $DIR/retag.rs:+18:21: +18:23
         StorageLive(_23);                // scope 7 at $DIR/retag.rs:+18:21: +18:23
diff --git a/tests/mir-opt/separate_const_switch.identity.SeparateConstSwitch.diff b/tests/mir-opt/separate_const_switch.identity.SeparateConstSwitch.diff
index e57544e09e2..cb89d634076 100644
--- a/tests/mir-opt/separate_const_switch.identity.SeparateConstSwitch.diff
+++ b/tests/mir-opt/separate_const_switch.identity.SeparateConstSwitch.diff
@@ -56,36 +56,31 @@
           StorageLive(_4);                 // scope 0 at $DIR/separate_const_switch.rs:+1:8: +1:9
           _4 = _1;                         // scope 0 at $DIR/separate_const_switch.rs:+1:8: +1:9
           _10 = discriminant(_4);          // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
--         switchInt(move _10) -> [0: bb7, 1: bb5, otherwise: bb6]; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
-+         switchInt(move _10) -> [0: bb6, 1: bb4, otherwise: bb5]; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+          switchInt(move _10) -> [0: bb7, 1: bb5, otherwise: bb6]; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
       }
   
       bb1: {
--         StorageDead(_4);                 // scope 0 at $DIR/separate_const_switch.rs:+1:9: +1:10
--         _5 = discriminant(_3);           // scope 0 at $DIR/separate_const_switch.rs:+1:8: +1:10
--         switchInt(move _5) -> [0: bb2, 1: bb4, otherwise: bb3]; // scope 0 at $DIR/separate_const_switch.rs:+1:8: +1:10
--     }
-- 
--     bb2: {
+          StorageDead(_4);                 // scope 0 at $DIR/separate_const_switch.rs:+1:9: +1:10
+          _5 = discriminant(_3);           // scope 0 at $DIR/separate_const_switch.rs:+1:8: +1:10
+          switchInt(move _5) -> [0: bb2, 1: bb4, otherwise: bb3]; // scope 0 at $DIR/separate_const_switch.rs:+1:8: +1:10
+      }
+  
+      bb2: {
           StorageLive(_9);                 // scope 0 at $DIR/separate_const_switch.rs:+1:8: +1:10
           _9 = ((_3 as Continue).0: i32);  // scope 0 at $DIR/separate_const_switch.rs:+1:8: +1:10
           _2 = _9;                         // scope 4 at $DIR/separate_const_switch.rs:+1:8: +1:10
           StorageDead(_9);                 // scope 0 at $DIR/separate_const_switch.rs:+1:9: +1:10
-          Deinit(_0);                      // scope 0 at $DIR/separate_const_switch.rs:+1:5: +1:11
-          ((_0 as Ok).0: i32) = move _2;   // scope 0 at $DIR/separate_const_switch.rs:+1:5: +1:11
-          discriminant(_0) = 0;            // scope 0 at $DIR/separate_const_switch.rs:+1:5: +1:11
+          _0 = Result::<i32, i32>::Ok(move _2); // scope 0 at $DIR/separate_const_switch.rs:+1:5: +1:11
           StorageDead(_2);                 // scope 0 at $DIR/separate_const_switch.rs:+1:10: +1:11
           StorageDead(_3);                 // scope 0 at $DIR/separate_const_switch.rs:+2:1: +2:2
           return;                          // scope 0 at $DIR/separate_const_switch.rs:+2:2: +2:2
       }
   
--     bb3: {
-+     bb2: {
+      bb3: {
           unreachable;                     // scope 0 at $DIR/separate_const_switch.rs:+1:8: +1:10
       }
   
--     bb4: {
-+     bb3: {
+      bb4: {
           StorageLive(_6);                 // scope 0 at $DIR/separate_const_switch.rs:+1:9: +1:10
           _6 = ((_3 as Break).0: std::result::Result<std::convert::Infallible, i32>); // scope 0 at $DIR/separate_const_switch.rs:+1:9: +1:10
           StorageLive(_8);                 // scope 2 at $DIR/separate_const_switch.rs:+1:9: +1:10
@@ -97,9 +92,7 @@
           _18 = move _16;                  // scope 9 at $SRC_DIR/core/src/result.rs:LL:COL
           _17 = move _18;                  // scope 10 at $SRC_DIR/core/src/convert/mod.rs:LL:COL
           StorageDead(_18);                // scope 9 at $SRC_DIR/core/src/result.rs:LL:COL
-          Deinit(_0);                      // scope 9 at $SRC_DIR/core/src/result.rs:LL:COL
-          ((_0 as Err).0: i32) = move _17; // scope 9 at $SRC_DIR/core/src/result.rs:LL:COL
-          discriminant(_0) = 1;            // scope 9 at $SRC_DIR/core/src/result.rs:LL:COL
+          _0 = Result::<i32, i32>::Err(move _17); // scope 9 at $SRC_DIR/core/src/result.rs:LL:COL
           StorageDead(_17);                // scope 9 at $SRC_DIR/core/src/result.rs:LL:COL
           StorageDead(_16);                // scope 8 at $SRC_DIR/core/src/result.rs:LL:COL
           StorageDead(_8);                 // scope 2 at $DIR/separate_const_switch.rs:+1:9: +1:10
@@ -109,48 +102,33 @@
           return;                          // scope 0 at $DIR/separate_const_switch.rs:+2:2: +2:2
       }
   
--     bb5: {
-+     bb4: {
+      bb5: {
           StorageLive(_13);                // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
           _13 = move ((_4 as Err).0: i32); // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
           StorageLive(_14);                // scope 7 at $SRC_DIR/core/src/result.rs:LL:COL
           StorageLive(_15);                // scope 7 at $SRC_DIR/core/src/result.rs:LL:COL
           _15 = move _13;                  // scope 7 at $SRC_DIR/core/src/result.rs:LL:COL
-          Deinit(_14);                     // scope 7 at $SRC_DIR/core/src/result.rs:LL:COL
-          ((_14 as Err).0: i32) = move _15; // scope 7 at $SRC_DIR/core/src/result.rs:LL:COL
-          discriminant(_14) = 1;           // scope 7 at $SRC_DIR/core/src/result.rs:LL:COL
+          _14 = Result::<Infallible, i32>::Err(move _15); // scope 7 at $SRC_DIR/core/src/result.rs:LL:COL
           StorageDead(_15);                // scope 7 at $SRC_DIR/core/src/result.rs:LL:COL
-          Deinit(_3);                      // scope 7 at $SRC_DIR/core/src/result.rs:LL:COL
-          ((_3 as Break).0: std::result::Result<std::convert::Infallible, i32>) = move _14; // scope 7 at $SRC_DIR/core/src/result.rs:LL:COL
-          discriminant(_3) = 1;            // scope 7 at $SRC_DIR/core/src/result.rs:LL:COL
+          _3 = ControlFlow::<Result<Infallible, i32>, i32>::Break(move _14); // scope 7 at $SRC_DIR/core/src/result.rs:LL:COL
           StorageDead(_14);                // scope 7 at $SRC_DIR/core/src/result.rs:LL:COL
           StorageDead(_13);                // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
--         goto -> bb1;                     // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
-+         StorageDead(_4);                 // scope 0 at $DIR/separate_const_switch.rs:+1:9: +1:10
-+         _5 = discriminant(_3);           // scope 0 at $DIR/separate_const_switch.rs:+1:8: +1:10
-+         switchInt(move _5) -> [0: bb1, 1: bb3, otherwise: bb2]; // scope 0 at $DIR/separate_const_switch.rs:+1:8: +1:10
+          goto -> bb1;                     // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
       }
   
--     bb6: {
-+     bb5: {
+      bb6: {
           unreachable;                     // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
       }
   
--     bb7: {
-+     bb6: {
+      bb7: {
           StorageLive(_11);                // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
           _11 = move ((_4 as Ok).0: i32);  // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
           StorageLive(_12);                // scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
           _12 = move _11;                  // scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
-          Deinit(_3);                      // scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
-          ((_3 as Continue).0: i32) = move _12; // scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
-          discriminant(_3) = 0;            // scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
+          _3 = ControlFlow::<Result<Infallible, i32>, i32>::Continue(move _12); // scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
           StorageDead(_12);                // scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
           StorageDead(_11);                // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
--         goto -> bb1;                     // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
-+         StorageDead(_4);                 // scope 0 at $DIR/separate_const_switch.rs:+1:9: +1:10
-+         _5 = discriminant(_3);           // scope 0 at $DIR/separate_const_switch.rs:+1:8: +1:10
-+         switchInt(move _5) -> [0: bb1, 1: bb3, otherwise: bb2]; // scope 0 at $DIR/separate_const_switch.rs:+1:8: +1:10
+          goto -> bb1;                     // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
       }
   }
   
diff --git a/tests/mir-opt/separate_const_switch.too_complex.SeparateConstSwitch.diff b/tests/mir-opt/separate_const_switch.too_complex.SeparateConstSwitch.diff
index 8cc0c6a1835..3c7e9dc6131 100644
--- a/tests/mir-opt/separate_const_switch.too_complex.SeparateConstSwitch.diff
+++ b/tests/mir-opt/separate_const_switch.too_complex.SeparateConstSwitch.diff
@@ -38,14 +38,10 @@
           _6 = ((_1 as Err).0: usize);     // scope 0 at $DIR/separate_const_switch.rs:+8:17: +8:18
           StorageLive(_7);                 // scope 2 at $DIR/separate_const_switch.rs:+8:42: +8:43
           _7 = _6;                         // scope 2 at $DIR/separate_const_switch.rs:+8:42: +8:43
-          Deinit(_2);                      // scope 2 at $DIR/separate_const_switch.rs:+8:23: +8:44
-          ((_2 as Break).0: usize) = move _7; // scope 2 at $DIR/separate_const_switch.rs:+8:23: +8:44
-          discriminant(_2) = 1;            // scope 2 at $DIR/separate_const_switch.rs:+8:23: +8:44
+          _2 = ControlFlow::<usize, i32>::Break(move _7); // scope 2 at $DIR/separate_const_switch.rs:+8:23: +8:44
           StorageDead(_7);                 // scope 2 at $DIR/separate_const_switch.rs:+8:43: +8:44
           StorageDead(_6);                 // scope 0 at $DIR/separate_const_switch.rs:+8:43: +8:44
--         goto -> bb4;                     // scope 0 at $DIR/separate_const_switch.rs:+8:43: +8:44
-+         _8 = discriminant(_2);           // scope 0 at $DIR/separate_const_switch.rs:+5:11: +10:6
-+         switchInt(move _8) -> [0: bb6, 1: bb4, otherwise: bb5]; // scope 0 at $DIR/separate_const_switch.rs:+5:5: +10:6
+          goto -> bb4;                     // scope 0 at $DIR/separate_const_switch.rs:+8:43: +8:44
       }
   
       bb2: {
@@ -57,53 +53,41 @@
           _4 = ((_1 as Ok).0: i32);        // scope 0 at $DIR/separate_const_switch.rs:+7:16: +7:17
           StorageLive(_5);                 // scope 1 at $DIR/separate_const_switch.rs:+7:44: +7:45
           _5 = _4;                         // scope 1 at $DIR/separate_const_switch.rs:+7:44: +7:45
-          Deinit(_2);                      // scope 1 at $DIR/separate_const_switch.rs:+7:22: +7:46
-          ((_2 as Continue).0: i32) = move _5; // scope 1 at $DIR/separate_const_switch.rs:+7:22: +7:46
-          discriminant(_2) = 0;            // scope 1 at $DIR/separate_const_switch.rs:+7:22: +7:46
+          _2 = ControlFlow::<usize, i32>::Continue(move _5); // scope 1 at $DIR/separate_const_switch.rs:+7:22: +7:46
           StorageDead(_5);                 // scope 1 at $DIR/separate_const_switch.rs:+7:45: +7:46
           StorageDead(_4);                 // scope 0 at $DIR/separate_const_switch.rs:+7:45: +7:46
--         goto -> bb4;                     // scope 0 at $DIR/separate_const_switch.rs:+7:45: +7:46
--     }
-- 
--     bb4: {
+          goto -> bb4;                     // scope 0 at $DIR/separate_const_switch.rs:+7:45: +7:46
+      }
+  
+      bb4: {
           _8 = discriminant(_2);           // scope 0 at $DIR/separate_const_switch.rs:+5:11: +10:6
--         switchInt(move _8) -> [0: bb7, 1: bb5, otherwise: bb6]; // scope 0 at $DIR/separate_const_switch.rs:+5:5: +10:6
-+         switchInt(move _8) -> [0: bb6, 1: bb4, otherwise: bb5]; // scope 0 at $DIR/separate_const_switch.rs:+5:5: +10:6
+          switchInt(move _8) -> [0: bb7, 1: bb5, otherwise: bb6]; // scope 0 at $DIR/separate_const_switch.rs:+5:5: +10:6
       }
   
--     bb5: {
-+     bb4: {
+      bb5: {
           StorageLive(_11);                // scope 0 at $DIR/separate_const_switch.rs:+12:28: +12:29
           _11 = ((_2 as Break).0: usize);  // scope 0 at $DIR/separate_const_switch.rs:+12:28: +12:29
-          Deinit(_0);                      // scope 4 at $DIR/separate_const_switch.rs:+12:34: +12:38
-          discriminant(_0) = 0;            // scope 4 at $DIR/separate_const_switch.rs:+12:34: +12:38
+          _0 = Option::<i32>::None;        // scope 4 at $DIR/separate_const_switch.rs:+12:34: +12:38
           StorageDead(_11);                // scope 0 at $DIR/separate_const_switch.rs:+12:37: +12:38
--         goto -> bb8;                     // scope 0 at $DIR/separate_const_switch.rs:+12:37: +12:38
-+         goto -> bb7;                     // scope 0 at $DIR/separate_const_switch.rs:+12:37: +12:38
+          goto -> bb8;                     // scope 0 at $DIR/separate_const_switch.rs:+12:37: +12:38
       }
   
--     bb6: {
-+     bb5: {
+      bb6: {
           unreachable;                     // scope 0 at $DIR/separate_const_switch.rs:+5:11: +10:6
       }
   
--     bb7: {
-+     bb6: {
+      bb7: {
           StorageLive(_9);                 // scope 0 at $DIR/separate_const_switch.rs:+11:31: +11:32
           _9 = ((_2 as Continue).0: i32);  // scope 0 at $DIR/separate_const_switch.rs:+11:31: +11:32
           StorageLive(_10);                // scope 3 at $DIR/separate_const_switch.rs:+11:42: +11:43
           _10 = _9;                        // scope 3 at $DIR/separate_const_switch.rs:+11:42: +11:43
-          Deinit(_0);                      // scope 3 at $DIR/separate_const_switch.rs:+11:37: +11:44
-          ((_0 as Some).0: i32) = move _10; // scope 3 at $DIR/separate_const_switch.rs:+11:37: +11:44
-          discriminant(_0) = 1;            // scope 3 at $DIR/separate_const_switch.rs:+11:37: +11:44
+          _0 = Option::<i32>::Some(move _10); // scope 3 at $DIR/separate_const_switch.rs:+11:37: +11:44
           StorageDead(_10);                // scope 3 at $DIR/separate_const_switch.rs:+11:43: +11:44
           StorageDead(_9);                 // scope 0 at $DIR/separate_const_switch.rs:+11:43: +11:44
--         goto -> bb8;                     // scope 0 at $DIR/separate_const_switch.rs:+11:43: +11:44
-+         goto -> bb7;                     // scope 0 at $DIR/separate_const_switch.rs:+11:43: +11:44
+          goto -> bb8;                     // scope 0 at $DIR/separate_const_switch.rs:+11:43: +11:44
       }
   
--     bb8: {
-+     bb7: {
+      bb8: {
           StorageDead(_2);                 // scope 0 at $DIR/separate_const_switch.rs:+14:1: +14:2
           return;                          // scope 0 at $DIR/separate_const_switch.rs:+14:2: +14:2
       }
diff --git a/tests/mir-opt/simple_option_map_e2e.ezmap.PreCodegen.after.mir b/tests/mir-opt/simple_option_map_e2e.ezmap.PreCodegen.after.mir
index 760f48d956d..66ba4df767c 100644
--- a/tests/mir-opt/simple_option_map_e2e.ezmap.PreCodegen.after.mir
+++ b/tests/mir-opt/simple_option_map_e2e.ezmap.PreCodegen.after.mir
@@ -8,12 +8,12 @@ fn ezmap(_1: Option<i32>) -> Option<i32> {
         debug slf => _1;                 // in scope 1 at $DIR/simple_option_map_e2e.rs:2:17: 2:20
         debug f => _2;                   // in scope 1 at $DIR/simple_option_map_e2e.rs:2:33: 2:34
         let mut _3: isize;               // in scope 1 at $DIR/simple_option_map_e2e.rs:7:9: 7:16
-        let mut _4: i32;                 // in scope 1 at $DIR/simple_option_map_e2e.rs:7:25: 7:29
+        let _4: i32;                     // in scope 1 at $DIR/simple_option_map_e2e.rs:7:14: 7:15
         let mut _5: i32;                 // in scope 1 at $DIR/simple_option_map_e2e.rs:7:25: 7:29
         scope 2 {
-            debug x => _5;               // in scope 2 at $DIR/simple_option_map_e2e.rs:7:14: 7:15
+            debug x => _4;               // in scope 2 at $DIR/simple_option_map_e2e.rs:7:14: 7:15
             scope 3 (inlined ezmap::{closure#0}) { // at $DIR/simple_option_map_e2e.rs:7:25: 7:29
-                debug n => _5;           // in scope 3 at $DIR/simple_option_map_e2e.rs:+1:13: +1:14
+                debug n => _4;           // in scope 3 at $DIR/simple_option_map_e2e.rs:+1:13: +1:14
             }
         }
     }
@@ -25,8 +25,7 @@ fn ezmap(_1: Option<i32>) -> Option<i32> {
     }
 
     bb1: {
-        Deinit(_0);                      // scope 1 at $DIR/simple_option_map_e2e.rs:8:17: 8:21
-        discriminant(_0) = 0;            // scope 1 at $DIR/simple_option_map_e2e.rs:8:17: 8:21
+        _0 = Option::<i32>::None;        // scope 1 at $DIR/simple_option_map_e2e.rs:8:17: 8:21
         goto -> bb4;                     // scope 1 at $DIR/simple_option_map_e2e.rs:8:17: 8:21
     }
 
@@ -35,13 +34,11 @@ fn ezmap(_1: Option<i32>) -> Option<i32> {
     }
 
     bb3: {
-        _5 = move ((_1 as Some).0: i32); // scope 1 at $DIR/simple_option_map_e2e.rs:7:14: 7:15
-        StorageLive(_4);                 // scope 2 at $DIR/simple_option_map_e2e.rs:7:25: 7:29
-        _4 = Add(_5, const 1_i32);       // scope 3 at $DIR/simple_option_map_e2e.rs:+1:16: +1:21
-        Deinit(_0);                      // scope 2 at $DIR/simple_option_map_e2e.rs:7:20: 7:30
-        ((_0 as Some).0: i32) = move _4; // scope 2 at $DIR/simple_option_map_e2e.rs:7:20: 7:30
-        discriminant(_0) = 1;            // scope 2 at $DIR/simple_option_map_e2e.rs:7:20: 7:30
-        StorageDead(_4);                 // scope 2 at $DIR/simple_option_map_e2e.rs:7:29: 7:30
+        _4 = ((_1 as Some).0: i32);      // scope 1 at $DIR/simple_option_map_e2e.rs:7:14: 7:15
+        StorageLive(_5);                 // scope 2 at $DIR/simple_option_map_e2e.rs:7:25: 7:29
+        _5 = Add(_4, const 1_i32);       // scope 3 at $DIR/simple_option_map_e2e.rs:+1:16: +1:21
+        _0 = Option::<i32>::Some(move _5); // scope 2 at $DIR/simple_option_map_e2e.rs:7:20: 7:30
+        StorageDead(_5);                 // scope 2 at $DIR/simple_option_map_e2e.rs:7:29: 7:30
         goto -> bb4;                     // scope 1 at $DIR/simple_option_map_e2e.rs:10:1: 10:2
     }
 
diff --git a/tests/mir-opt/simplify_locals.d1.SimplifyLocals-before-const-prop.diff b/tests/mir-opt/simplify_locals.d1.SimplifyLocals-before-const-prop.diff
index 98173803018..946595e322e 100644
--- a/tests/mir-opt/simplify_locals.d1.SimplifyLocals-before-const-prop.diff
+++ b/tests/mir-opt/simplify_locals.d1.SimplifyLocals-before-const-prop.diff
@@ -9,8 +9,7 @@
   
       bb0: {
 -         StorageLive(_1);                 // scope 0 at $DIR/simplify_locals.rs:+2:13: +2:17
--         Deinit(_1);                      // scope 0 at $DIR/simplify_locals.rs:+2:13: +2:17
--         discriminant(_1) = 0;            // scope 0 at $DIR/simplify_locals.rs:+2:13: +2:17
+-         _1 = E::A;                       // scope 0 at $DIR/simplify_locals.rs:+2:13: +2:17
 -         StorageDead(_1);                 // scope 0 at $DIR/simplify_locals.rs:+2:17: +2:18
           _0 = const ();                   // scope 0 at $DIR/simplify_locals.rs:+0:9: +3:2
           return;                          // scope 0 at $DIR/simplify_locals.rs:+3:2: +3:2
diff --git a/tests/mir-opt/simplify_locals.d2.SimplifyLocals-before-const-prop.diff b/tests/mir-opt/simplify_locals.d2.SimplifyLocals-before-const-prop.diff
index b152dc8cca3..6a5dc56e211 100644
--- a/tests/mir-opt/simplify_locals.d2.SimplifyLocals-before-const-prop.diff
+++ b/tests/mir-opt/simplify_locals.d2.SimplifyLocals-before-const-prop.diff
@@ -9,15 +9,11 @@
   
       bb0: {
 -         StorageLive(_1);                 // scope 0 at $DIR/simplify_locals.rs:+2:22: +2:26
--         Deinit(_1);                      // scope 0 at $DIR/simplify_locals.rs:+2:22: +2:26
--         discriminant(_1) = 1;            // scope 0 at $DIR/simplify_locals.rs:+2:22: +2:26
+-         _1 = E::B;                       // scope 0 at $DIR/simplify_locals.rs:+2:22: +2:26
 -         StorageLive(_2);                 // scope 0 at $DIR/simplify_locals.rs:+2:5: +2:17
 -         StorageLive(_3);                 // scope 0 at $DIR/simplify_locals.rs:+2:11: +2:15
--         Deinit(_3);                      // scope 0 at $DIR/simplify_locals.rs:+2:11: +2:15
--         discriminant(_3) = 0;            // scope 0 at $DIR/simplify_locals.rs:+2:11: +2:15
--         Deinit(_2);                      // scope 0 at $DIR/simplify_locals.rs:+2:6: +2:16
--         (_2.0: i32) = const 10_i32;      // scope 0 at $DIR/simplify_locals.rs:+2:6: +2:16
--         (_2.1: E) = move _3;             // scope 0 at $DIR/simplify_locals.rs:+2:6: +2:16
+-         _3 = E::A;                       // scope 0 at $DIR/simplify_locals.rs:+2:11: +2:15
+-         _2 = (const 10_i32, move _3);    // scope 0 at $DIR/simplify_locals.rs:+2:6: +2:16
 -         StorageDead(_3);                 // scope 0 at $DIR/simplify_locals.rs:+2:15: +2:16
 -         (_2.1: E) = move _1;             // scope 0 at $DIR/simplify_locals.rs:+2:5: +2:26
 -         StorageDead(_1);                 // scope 0 at $DIR/simplify_locals.rs:+2:25: +2:26
diff --git a/tests/mir-opt/simplify_locals_fixedpoint.foo.SimplifyLocals-final.diff b/tests/mir-opt/simplify_locals_fixedpoint.foo.SimplifyLocals-final.diff
index f888c622d90..9b7dd733820 100644
--- a/tests/mir-opt/simplify_locals_fixedpoint.foo.SimplifyLocals-final.diff
+++ b/tests/mir-opt/simplify_locals_fixedpoint.foo.SimplifyLocals-final.diff
@@ -18,14 +18,10 @@
       bb0: {
           StorageLive(_1);                 // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:30: +1:69
           StorageLive(_2);                 // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:31: +1:49
-          Deinit(_2);                      // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:31: +1:49
-          discriminant(_2) = 0;            // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:31: +1:49
+          _2 = Option::<u8>::None;         // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:31: +1:49
           StorageLive(_3);                 // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:51: +1:68
-          Deinit(_3);                      // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:51: +1:68
-          discriminant(_3) = 0;            // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:51: +1:68
-          Deinit(_1);                      // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:30: +1:69
-          (_1.0: std::option::Option<u8>) = move _2; // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:30: +1:69
-          (_1.1: std::option::Option<T>) = move _3; // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:30: +1:69
+          _3 = Option::<T>::None;          // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:51: +1:68
+          _1 = (move _2, move _3);         // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:30: +1:69
           StorageDead(_3);                 // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:68: +1:69
           StorageDead(_2);                 // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:68: +1:69
           _5 = discriminant((_1.0: std::option::Option<u8>)); // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:12: +1:27
diff --git a/tests/mir-opt/simplify_locals_removes_unused_consts.main.SimplifyLocals-before-const-prop.diff b/tests/mir-opt/simplify_locals_removes_unused_consts.main.SimplifyLocals-before-const-prop.diff
index efb2b0961cc..0f8866f9c2f 100644
--- a/tests/mir-opt/simplify_locals_removes_unused_consts.main.SimplifyLocals-before-const-prop.diff
+++ b/tests/mir-opt/simplify_locals_removes_unused_consts.main.SimplifyLocals-before-const-prop.diff
@@ -28,36 +28,30 @@
       bb0: {
 -         StorageLive(_1);                 // scope 0 at $DIR/simplify_locals_removes_unused_consts.rs:+1:20: +1:28
 -         StorageLive(_2);                 // scope 0 at $DIR/simplify_locals_removes_unused_consts.rs:+1:21: +1:23
--         Deinit(_2);                      // scope 0 at $DIR/simplify_locals_removes_unused_consts.rs:+1:21: +1:23
+-         _2 = ();                         // scope 0 at $DIR/simplify_locals_removes_unused_consts.rs:+1:21: +1:23
 -         StorageLive(_3);                 // scope 0 at $DIR/simplify_locals_removes_unused_consts.rs:+1:25: +1:27
--         Deinit(_3);                      // scope 0 at $DIR/simplify_locals_removes_unused_consts.rs:+1:25: +1:27
--         Deinit(_1);                      // scope 0 at $DIR/simplify_locals_removes_unused_consts.rs:+1:20: +1:28
--         (_1.0: ()) = move _2;            // scope 0 at $DIR/simplify_locals_removes_unused_consts.rs:+1:20: +1:28
--         (_1.1: ()) = move _3;            // scope 0 at $DIR/simplify_locals_removes_unused_consts.rs:+1:20: +1:28
+-         _3 = ();                         // scope 0 at $DIR/simplify_locals_removes_unused_consts.rs:+1:25: +1:27
+-         _1 = (move _2, move _3);         // scope 0 at $DIR/simplify_locals_removes_unused_consts.rs:+1:20: +1:28
 -         StorageDead(_3);                 // scope 0 at $DIR/simplify_locals_removes_unused_consts.rs:+1:27: +1:28
 -         StorageDead(_2);                 // scope 0 at $DIR/simplify_locals_removes_unused_consts.rs:+1:27: +1:28
 -         StorageDead(_1);                 // scope 0 at $DIR/simplify_locals_removes_unused_consts.rs:+1:28: +1:29
 -         StorageLive(_4);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:5: +2:22
 -         StorageLive(_5);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:13: +2:21
 -         StorageLive(_6);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:14: +2:16
--         Deinit(_6);                      // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:14: +2:16
+-         _6 = ();                         // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:14: +2:16
 -         StorageLive(_7);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:18: +2:20
--         Deinit(_7);                      // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:18: +2:20
--         Deinit(_5);                      // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:13: +2:21
--         (_5.0: ()) = move _6;            // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:13: +2:21
--         (_5.1: ()) = move _7;            // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:13: +2:21
+-         _7 = ();                         // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:18: +2:20
+-         _5 = (move _6, move _7);         // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:13: +2:21
 -         StorageDead(_7);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:20: +2:21
 -         StorageDead(_6);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:20: +2:21
 -         _4 = use_zst(move _5) -> bb1;    // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:5: +2:22
 +         StorageLive(_1);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:5: +2:22
 +         StorageLive(_2);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:13: +2:21
 +         StorageLive(_3);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:14: +2:16
-+         Deinit(_3);                      // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:14: +2:16
++         _3 = ();                         // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:14: +2:16
 +         StorageLive(_4);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:18: +2:20
-+         Deinit(_4);                      // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:18: +2:20
-+         Deinit(_2);                      // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:13: +2:21
-+         (_2.0: ()) = move _3;            // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:13: +2:21
-+         (_2.1: ()) = move _4;            // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:13: +2:21
++         _4 = ();                         // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:18: +2:20
++         _2 = (move _3, move _4);         // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:13: +2:21
 +         StorageDead(_4);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:20: +2:21
 +         StorageDead(_3);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:20: +2:21
 +         _1 = use_zst(move _2) -> bb1;    // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+2:5: +2:22
@@ -73,8 +67,7 @@
 -         StorageLive(_9);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:12: +4:34
 -         StorageLive(_10);                // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:12: +4:30
 -         StorageLive(_11);                // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:12: +4:28
--         Deinit(_11);                     // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:12: +4:28
--         (_11.0: u8) = const 40_u8;       // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:12: +4:28
+-         _11 = Temp { x: const 40_u8 };   // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:12: +4:28
 -         _10 = (_11.0: u8);               // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:12: +4:30
 -         _9 = Add(move _10, const 2_u8);  // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:12: +4:34
 -         StorageDead(_10);                // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:33: +4:34
@@ -85,8 +78,7 @@
 +         StorageLive(_6);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:12: +4:34
 +         StorageLive(_7);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:12: +4:30
 +         StorageLive(_8);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:12: +4:28
-+         Deinit(_8);                      // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:12: +4:28
-+         (_8.0: u8) = const 40_u8;        // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:12: +4:28
++         _8 = Temp { x: const 40_u8 };    // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:12: +4:28
 +         _7 = (_8.0: u8);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:12: +4:30
 +         _6 = Add(move _7, const 2_u8);   // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:12: +4:34
 +         StorageDead(_7);                 // scope 1 at $DIR/simplify_locals_removes_unused_consts.rs:+4:33: +4:34
diff --git a/tests/mir-opt/simplify_locals_removes_unused_discriminant_reads.map.SimplifyLocals-before-const-prop.diff b/tests/mir-opt/simplify_locals_removes_unused_discriminant_reads.map.SimplifyLocals-before-const-prop.diff
index 027c983e6b4..3f9af31d888 100644
--- a/tests/mir-opt/simplify_locals_removes_unused_discriminant_reads.map.SimplifyLocals-before-const-prop.diff
+++ b/tests/mir-opt/simplify_locals_removes_unused_discriminant_reads.map.SimplifyLocals-before-const-prop.diff
@@ -26,9 +26,7 @@
           _3 = move ((_1 as Some).0: std::boxed::Box<()>); // scope 0 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+3:14: +3:15
           StorageLive(_4);                 // scope 1 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+3:25: +3:26
           _4 = move _3;                    // scope 1 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+3:25: +3:26
-          Deinit(_0);                      // scope 1 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+3:20: +3:27
-          ((_0 as Some).0: std::boxed::Box<()>) = move _4; // scope 1 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+3:20: +3:27
-          discriminant(_0) = 1;            // scope 1 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+3:20: +3:27
+          _0 = Option::<Box<()>>::Some(move _4); // scope 1 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+3:20: +3:27
           StorageDead(_4);                 // scope 1 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+3:26: +3:27
           StorageDead(_3);                 // scope 0 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+3:26: +3:27
           goto -> bb4;                     // scope 0 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+3:26: +3:27
@@ -39,8 +37,7 @@
       }
   
       bb3: {
-          Deinit(_0);                      // scope 0 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+2:17: +2:21
-          discriminant(_0) = 0;            // scope 0 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+2:17: +2:21
+          _0 = Option::<Box<()>>::None;    // scope 0 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+2:17: +2:21
           goto -> bb4;                     // scope 0 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+2:17: +2:21
       }
   
diff --git a/tests/mir-opt/sroa.copies.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa.copies.ScalarReplacementOfAggregates.diff
new file mode 100644
index 00000000000..976f6d44b75
--- /dev/null
+++ b/tests/mir-opt/sroa.copies.ScalarReplacementOfAggregates.diff
@@ -0,0 +1,91 @@
+- // MIR for `copies` before ScalarReplacementOfAggregates
++ // MIR for `copies` after ScalarReplacementOfAggregates
+  
+  fn copies(_1: Foo) -> () {
+      debug x => _1;                       // in scope 0 at $DIR/sroa.rs:+0:11: +0:12
+      let mut _0: ();                      // return place in scope 0 at $DIR/sroa.rs:+0:19: +0:19
+      let _2: Foo;                         // in scope 0 at $DIR/sroa.rs:+1:9: +1:10
++     let _11: u8;                         // in scope 0 at $DIR/sroa.rs:+1:9: +1:10
++     let _12: ();                         // in scope 0 at $DIR/sroa.rs:+1:9: +1:10
++     let _13: &str;                       // in scope 0 at $DIR/sroa.rs:+1:9: +1:10
++     let _14: std::option::Option<isize>; // in scope 0 at $DIR/sroa.rs:+1:9: +1:10
+      scope 1 {
+-         debug y => _2;                   // in scope 1 at $DIR/sroa.rs:+1:9: +1:10
++         debug y => Foo{ .0 => _11, .1 => _12, .2 => _13, .3 => _14, }; // in scope 1 at $DIR/sroa.rs:+1:9: +1:10
+          let _3: u8;                      // in scope 1 at $DIR/sroa.rs:+2:9: +2:10
+          scope 2 {
+              debug t => _3;               // in scope 2 at $DIR/sroa.rs:+2:9: +2:10
+              let _4: &str;                // in scope 2 at $DIR/sroa.rs:+3:9: +3:10
+              scope 3 {
+                  debug u => _4;           // in scope 3 at $DIR/sroa.rs:+3:9: +3:10
+                  let _5: Foo;             // in scope 3 at $DIR/sroa.rs:+4:9: +4:10
++                 let _7: u8;              // in scope 3 at $DIR/sroa.rs:+4:9: +4:10
++                 let _8: ();              // in scope 3 at $DIR/sroa.rs:+4:9: +4:10
++                 let _9: &str;            // in scope 3 at $DIR/sroa.rs:+4:9: +4:10
++                 let _10: std::option::Option<isize>; // in scope 3 at $DIR/sroa.rs:+4:9: +4:10
+                  scope 4 {
+-                     debug z => _5;       // in scope 4 at $DIR/sroa.rs:+4:9: +4:10
++                     debug z => Foo{ .0 => _7, .1 => _8, .2 => _9, .3 => _10, }; // in scope 4 at $DIR/sroa.rs:+4:9: +4:10
+                      let _6: ();          // in scope 4 at $DIR/sroa.rs:+5:9: +5:10
+                      scope 5 {
+                          debug a => _6;   // in scope 5 at $DIR/sroa.rs:+5:9: +5:10
+                      }
+                  }
+              }
+          }
+      }
+  
+      bb0: {
+-         StorageLive(_2);                 // scope 0 at $DIR/sroa.rs:+1:9: +1:10
+-         _2 = _1;                         // scope 0 at $DIR/sroa.rs:+1:13: +1:14
++         StorageLive(_11);                // scope 0 at $DIR/sroa.rs:+1:9: +1:10
++         StorageLive(_12);                // scope 0 at $DIR/sroa.rs:+1:9: +1:10
++         StorageLive(_13);                // scope 0 at $DIR/sroa.rs:+1:9: +1:10
++         StorageLive(_14);                // scope 0 at $DIR/sroa.rs:+1:9: +1:10
++         nop;                             // scope 0 at $DIR/sroa.rs:+1:9: +1:10
++         _11 = (_1.0: u8);                // scope 0 at $DIR/sroa.rs:+1:13: +1:14
++         _12 = (_1.1: ());                // scope 0 at $DIR/sroa.rs:+1:13: +1:14
++         _13 = (_1.2: &str);              // scope 0 at $DIR/sroa.rs:+1:13: +1:14
++         _14 = (_1.3: std::option::Option<isize>); // scope 0 at $DIR/sroa.rs:+1:13: +1:14
++         nop;                             // scope 0 at $DIR/sroa.rs:+1:13: +1:14
+          StorageLive(_3);                 // scope 1 at $DIR/sroa.rs:+2:9: +2:10
+-         _3 = (_2.0: u8);                 // scope 1 at $DIR/sroa.rs:+2:13: +2:16
++         _3 = _11;                        // scope 1 at $DIR/sroa.rs:+2:13: +2:16
+          StorageLive(_4);                 // scope 2 at $DIR/sroa.rs:+3:9: +3:10
+-         _4 = (_2.2: &str);               // scope 2 at $DIR/sroa.rs:+3:13: +3:16
+-         StorageLive(_5);                 // scope 3 at $DIR/sroa.rs:+4:9: +4:10
+-         _5 = _2;                         // scope 3 at $DIR/sroa.rs:+4:13: +4:14
++         _4 = _13;                        // scope 2 at $DIR/sroa.rs:+3:13: +3:16
++         StorageLive(_7);                 // scope 3 at $DIR/sroa.rs:+4:9: +4:10
++         StorageLive(_8);                 // scope 3 at $DIR/sroa.rs:+4:9: +4:10
++         StorageLive(_9);                 // scope 3 at $DIR/sroa.rs:+4:9: +4:10
++         StorageLive(_10);                // scope 3 at $DIR/sroa.rs:+4:9: +4:10
++         nop;                             // scope 3 at $DIR/sroa.rs:+4:9: +4:10
++         _7 = _11;                        // scope 3 at $DIR/sroa.rs:+4:13: +4:14
++         _8 = _12;                        // scope 3 at $DIR/sroa.rs:+4:13: +4:14
++         _9 = _13;                        // scope 3 at $DIR/sroa.rs:+4:13: +4:14
++         _10 = _14;                       // scope 3 at $DIR/sroa.rs:+4:13: +4:14
++         nop;                             // scope 3 at $DIR/sroa.rs:+4:13: +4:14
+          StorageLive(_6);                 // scope 4 at $DIR/sroa.rs:+5:9: +5:10
+-         _6 = (_5.1: ());                 // scope 4 at $DIR/sroa.rs:+5:13: +5:16
++         _6 = _8;                         // scope 4 at $DIR/sroa.rs:+5:13: +5:16
+          _0 = const ();                   // scope 0 at $DIR/sroa.rs:+0:19: +6:2
+          StorageDead(_6);                 // scope 4 at $DIR/sroa.rs:+6:1: +6:2
+-         StorageDead(_5);                 // scope 3 at $DIR/sroa.rs:+6:1: +6:2
++         StorageDead(_7);                 // scope 3 at $DIR/sroa.rs:+6:1: +6:2
++         StorageDead(_8);                 // scope 3 at $DIR/sroa.rs:+6:1: +6:2
++         StorageDead(_9);                 // scope 3 at $DIR/sroa.rs:+6:1: +6:2
++         StorageDead(_10);                // scope 3 at $DIR/sroa.rs:+6:1: +6:2
++         nop;                             // scope 3 at $DIR/sroa.rs:+6:1: +6:2
+          StorageDead(_4);                 // scope 2 at $DIR/sroa.rs:+6:1: +6:2
+          StorageDead(_3);                 // scope 1 at $DIR/sroa.rs:+6:1: +6:2
+-         StorageDead(_2);                 // scope 0 at $DIR/sroa.rs:+6:1: +6:2
++         StorageDead(_11);                // scope 0 at $DIR/sroa.rs:+6:1: +6:2
++         StorageDead(_12);                // scope 0 at $DIR/sroa.rs:+6:1: +6:2
++         StorageDead(_13);                // scope 0 at $DIR/sroa.rs:+6:1: +6:2
++         StorageDead(_14);                // scope 0 at $DIR/sroa.rs:+6:1: +6:2
++         nop;                             // scope 0 at $DIR/sroa.rs:+6:1: +6:2
+          return;                          // scope 0 at $DIR/sroa.rs:+6:2: +6:2
+      }
+  }
+  
diff --git a/tests/mir-opt/sroa.dropping.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa.dropping.ScalarReplacementOfAggregates.diff
index eb88304466e..17a89e7d8eb 100644
--- a/tests/mir-opt/sroa.dropping.ScalarReplacementOfAggregates.diff
+++ b/tests/mir-opt/sroa.dropping.ScalarReplacementOfAggregates.diff
@@ -13,18 +13,12 @@
           StorageLive(_1);                 // scope 0 at $DIR/sroa.rs:+1:5: +1:32
           StorageLive(_2);                 // scope 0 at $DIR/sroa.rs:+1:5: +1:30
           StorageLive(_3);                 // scope 0 at $DIR/sroa.rs:+1:7: +1:13
-          Deinit(_3);                      // scope 0 at $DIR/sroa.rs:+1:7: +1:13
-          (_3.0: usize) = const 0_usize;   // scope 0 at $DIR/sroa.rs:+1:7: +1:13
+          _3 = Tag(const 0_usize);         // scope 0 at $DIR/sroa.rs:+1:7: +1:13
           StorageLive(_4);                 // scope 0 at $DIR/sroa.rs:+1:15: +1:21
-          Deinit(_4);                      // scope 0 at $DIR/sroa.rs:+1:15: +1:21
-          (_4.0: usize) = const 1_usize;   // scope 0 at $DIR/sroa.rs:+1:15: +1:21
+          _4 = Tag(const 1_usize);         // scope 0 at $DIR/sroa.rs:+1:15: +1:21
           StorageLive(_5);                 // scope 0 at $DIR/sroa.rs:+1:23: +1:29
-          Deinit(_5);                      // scope 0 at $DIR/sroa.rs:+1:23: +1:29
-          (_5.0: usize) = const 2_usize;   // scope 0 at $DIR/sroa.rs:+1:23: +1:29
-          Deinit(_2);                      // scope 0 at $DIR/sroa.rs:+1:5: +1:30
-          (_2.0: Tag) = move _3;           // scope 0 at $DIR/sroa.rs:+1:5: +1:30
-          (_2.1: Tag) = move _4;           // scope 0 at $DIR/sroa.rs:+1:5: +1:30
-          (_2.2: Tag) = move _5;           // scope 0 at $DIR/sroa.rs:+1:5: +1:30
+          _5 = Tag(const 2_usize);         // scope 0 at $DIR/sroa.rs:+1:23: +1:29
+          _2 = S(move _3, move _4, move _5); // scope 0 at $DIR/sroa.rs:+1:5: +1:30
           StorageDead(_5);                 // scope 0 at $DIR/sroa.rs:+1:29: +1:30
           StorageDead(_4);                 // scope 0 at $DIR/sroa.rs:+1:29: +1:30
           StorageDead(_3);                 // scope 0 at $DIR/sroa.rs:+1:29: +1:30
diff --git a/tests/mir-opt/sroa.enums.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa.enums.ScalarReplacementOfAggregates.diff
index a5488c1ec7b..04d26162aad 100644
--- a/tests/mir-opt/sroa.enums.ScalarReplacementOfAggregates.diff
+++ b/tests/mir-opt/sroa.enums.ScalarReplacementOfAggregates.diff
@@ -16,9 +16,7 @@
           StorageLive(_2);                 // scope 1 at $DIR/sroa.rs:+1:22: +1:29
           StorageLive(_3);                 // scope 1 at $DIR/sroa.rs:+1:27: +1:28
           _3 = _1;                         // scope 1 at $DIR/sroa.rs:+1:27: +1:28
-          Deinit(_2);                      // scope 1 at $DIR/sroa.rs:+1:22: +1:29
-          ((_2 as Some).0: usize) = move _3; // scope 1 at $DIR/sroa.rs:+1:22: +1:29
-          discriminant(_2) = 1;            // scope 1 at $DIR/sroa.rs:+1:22: +1:29
+          _2 = Option::<usize>::Some(move _3); // scope 1 at $DIR/sroa.rs:+1:22: +1:29
           StorageDead(_3);                 // scope 1 at $DIR/sroa.rs:+1:28: +1:29
           _4 = discriminant(_2);           // scope 1 at $DIR/sroa.rs:+1:12: +1:19
           switchInt(move _4) -> [1: bb1, otherwise: bb2]; // scope 1 at $DIR/sroa.rs:+1:12: +1:19
diff --git a/tests/mir-opt/sroa.escaping.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa.escaping.ScalarReplacementOfAggregates.diff
index 64559b58f61..ea7f5007224 100644
--- a/tests/mir-opt/sroa.escaping.ScalarReplacementOfAggregates.diff
+++ b/tests/mir-opt/sroa.escaping.ScalarReplacementOfAggregates.diff
@@ -17,21 +17,18 @@
           StorageLive(_5);                 // scope 0 at $DIR/sroa.rs:+2:34: +2:37
           _5 = g() -> bb1;                 // scope 0 at $DIR/sroa.rs:+2:34: +2:37
                                            // mir::Constant
-                                           // + span: $DIR/sroa.rs:78:34: 78:35
+                                           // + span: $DIR/sroa.rs:73:34: 73:35
                                            // + literal: Const { ty: fn() -> u32 {g}, val: Value(<ZST>) }
       }
   
       bb1: {
-          Deinit(_4);                      // scope 0 at $DIR/sroa.rs:+2:8: +2:39
-          (_4.0: u32) = const 1_u32;       // scope 0 at $DIR/sroa.rs:+2:8: +2:39
-          (_4.1: u32) = const 2_u32;       // scope 0 at $DIR/sroa.rs:+2:8: +2:39
-          (_4.2: u32) = move _5;           // scope 0 at $DIR/sroa.rs:+2:8: +2:39
+          _4 = Escaping { a: const 1_u32, b: const 2_u32, c: move _5 }; // scope 0 at $DIR/sroa.rs:+2:8: +2:39
           StorageDead(_5);                 // scope 0 at $DIR/sroa.rs:+2:38: +2:39
           _3 = &(_4.0: u32);               // scope 0 at $DIR/sroa.rs:+2:7: +2:41
           _2 = &raw const (*_3);           // scope 0 at $DIR/sroa.rs:+2:7: +2:41
           _1 = f(move _2) -> bb2;          // scope 0 at $DIR/sroa.rs:+2:5: +2:42
                                            // mir::Constant
-                                           // + span: $DIR/sroa.rs:78:5: 78:6
+                                           // + span: $DIR/sroa.rs:73:5: 73:6
                                            // + literal: Const { ty: fn(*const u32) {f}, val: Value(<ZST>) }
       }
   
diff --git a/tests/mir-opt/sroa.flat.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa.flat.ScalarReplacementOfAggregates.diff
index d4c04d5e68b..69631fc0213 100644
--- a/tests/mir-opt/sroa.flat.ScalarReplacementOfAggregates.diff
+++ b/tests/mir-opt/sroa.flat.ScalarReplacementOfAggregates.diff
@@ -35,28 +35,20 @@
 +         StorageLive(_9);                 // scope 0 at $DIR/sroa.rs:+1:30: +1:70
 +         StorageLive(_10);                // scope 0 at $DIR/sroa.rs:+1:30: +1:70
 +         StorageLive(_11);                // scope 0 at $DIR/sroa.rs:+1:30: +1:70
++         nop;                             // scope 0 at $DIR/sroa.rs:+1:30: +1:70
           StorageLive(_6);                 // scope 0 at $DIR/sroa.rs:+1:45: +1:47
-          Deinit(_6);                      // scope 0 at $DIR/sroa.rs:+1:45: +1:47
+          _6 = ();                         // scope 0 at $DIR/sroa.rs:+1:45: +1:47
           StorageLive(_7);                 // scope 0 at $DIR/sroa.rs:+1:60: +1:68
-          Deinit(_7);                      // scope 0 at $DIR/sroa.rs:+1:60: +1:68
-          ((_7 as Some).0: isize) = const -4_isize; // scope 0 at $DIR/sroa.rs:+1:60: +1:68
-          discriminant(_7) = 1;            // scope 0 at $DIR/sroa.rs:+1:60: +1:68
--         Deinit(_5);                      // scope 0 at $DIR/sroa.rs:+1:30: +1:70
--         (_5.0: u8) = const 5_u8;         // scope 0 at $DIR/sroa.rs:+1:30: +1:70
--         (_5.1: ()) = move _6;            // scope 0 at $DIR/sroa.rs:+1:30: +1:70
--         (_5.2: &str) = const "a";        // scope 0 at $DIR/sroa.rs:+1:30: +1:70
-+         Deinit(_8);                      // scope 0 at $DIR/sroa.rs:+1:30: +1:70
-+         Deinit(_9);                      // scope 0 at $DIR/sroa.rs:+1:30: +1:70
-+         Deinit(_10);                     // scope 0 at $DIR/sroa.rs:+1:30: +1:70
-+         Deinit(_11);                     // scope 0 at $DIR/sroa.rs:+1:30: +1:70
+          _7 = Option::<isize>::Some(const -4_isize); // scope 0 at $DIR/sroa.rs:+1:60: +1:68
+-         _5 = Foo { a: const 5_u8, b: move _6, c: const "a", d: move _7 }; // scope 0 at $DIR/sroa.rs:+1:30: +1:70
 +         _8 = const 5_u8;                 // scope 0 at $DIR/sroa.rs:+1:30: +1:70
 +         _9 = move _6;                    // scope 0 at $DIR/sroa.rs:+1:30: +1:70
 +         _10 = const "a";                 // scope 0 at $DIR/sroa.rs:+1:30: +1:70
                                            // mir::Constant
-                                           // + span: $DIR/sroa.rs:57:52: 57:55
+                                           // + span: $DIR/sroa.rs:53:52: 53:55
                                            // + literal: Const { ty: &str, val: Value(Slice(..)) }
--         (_5.3: std::option::Option<isize>) = move _7; // scope 0 at $DIR/sroa.rs:+1:30: +1:70
 +         _11 = move _7;                   // scope 0 at $DIR/sroa.rs:+1:30: +1:70
++         nop;                             // scope 0 at $DIR/sroa.rs:+1:30: +1:70
           StorageDead(_7);                 // scope 0 at $DIR/sroa.rs:+1:69: +1:70
           StorageDead(_6);                 // scope 0 at $DIR/sroa.rs:+1:69: +1:70
           StorageLive(_1);                 // scope 0 at $DIR/sroa.rs:+1:15: +1:16
@@ -76,6 +68,7 @@
 +         StorageDead(_9);                 // scope 0 at $DIR/sroa.rs:+1:70: +1:71
 +         StorageDead(_10);                // scope 0 at $DIR/sroa.rs:+1:70: +1:71
 +         StorageDead(_11);                // scope 0 at $DIR/sroa.rs:+1:70: +1:71
++         nop;                             // scope 0 at $DIR/sroa.rs:+1:70: +1:71
           _0 = const ();                   // scope 0 at $DIR/sroa.rs:+0:15: +6:2
           StorageDead(_4);                 // scope 0 at $DIR/sroa.rs:+6:1: +6:2
           StorageDead(_3);                 // scope 0 at $DIR/sroa.rs:+6:1: +6:2
diff --git a/tests/mir-opt/sroa.ref_copies.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa.ref_copies.ScalarReplacementOfAggregates.diff
new file mode 100644
index 00000000000..f0d62220dd6
--- /dev/null
+++ b/tests/mir-opt/sroa.ref_copies.ScalarReplacementOfAggregates.diff
@@ -0,0 +1,56 @@
+- // MIR for `ref_copies` before ScalarReplacementOfAggregates
++ // MIR for `ref_copies` after ScalarReplacementOfAggregates
+  
+  fn ref_copies(_1: &Foo) -> () {
+      debug x => _1;                       // in scope 0 at $DIR/sroa.rs:+0:15: +0:16
+      let mut _0: ();                      // return place in scope 0 at $DIR/sroa.rs:+0:24: +0:24
+      let _2: Foo;                         // in scope 0 at $DIR/sroa.rs:+1:9: +1:10
++     let _5: u8;                          // in scope 0 at $DIR/sroa.rs:+1:9: +1:10
++     let _6: ();                          // in scope 0 at $DIR/sroa.rs:+1:9: +1:10
++     let _7: &str;                        // in scope 0 at $DIR/sroa.rs:+1:9: +1:10
++     let _8: std::option::Option<isize>;  // in scope 0 at $DIR/sroa.rs:+1:9: +1:10
+      scope 1 {
+-         debug y => _2;                   // in scope 1 at $DIR/sroa.rs:+1:9: +1:10
++         debug y => Foo{ .0 => _5, .1 => _6, .2 => _7, .3 => _8, }; // in scope 1 at $DIR/sroa.rs:+1:9: +1:10
+          let _3: u8;                      // in scope 1 at $DIR/sroa.rs:+2:9: +2:10
+          scope 2 {
+              debug t => _3;               // in scope 2 at $DIR/sroa.rs:+2:9: +2:10
+              let _4: &str;                // in scope 2 at $DIR/sroa.rs:+3:9: +3:10
+              scope 3 {
+                  debug u => _4;           // in scope 3 at $DIR/sroa.rs:+3:9: +3:10
+              }
+          }
+      }
+  
+      bb0: {
+-         StorageLive(_2);                 // scope 0 at $DIR/sroa.rs:+1:9: +1:10
+-         _2 = (*_1);                      // scope 0 at $DIR/sroa.rs:+1:13: +1:15
++         StorageLive(_5);                 // scope 0 at $DIR/sroa.rs:+1:9: +1:10
++         StorageLive(_6);                 // scope 0 at $DIR/sroa.rs:+1:9: +1:10
++         StorageLive(_7);                 // scope 0 at $DIR/sroa.rs:+1:9: +1:10
++         StorageLive(_8);                 // scope 0 at $DIR/sroa.rs:+1:9: +1:10
++         nop;                             // scope 0 at $DIR/sroa.rs:+1:9: +1:10
++         _5 = ((*_1).0: u8);              // scope 0 at $DIR/sroa.rs:+1:13: +1:15
++         _6 = ((*_1).1: ());              // scope 0 at $DIR/sroa.rs:+1:13: +1:15
++         _7 = ((*_1).2: &str);            // scope 0 at $DIR/sroa.rs:+1:13: +1:15
++         _8 = ((*_1).3: std::option::Option<isize>); // scope 0 at $DIR/sroa.rs:+1:13: +1:15
++         nop;                             // scope 0 at $DIR/sroa.rs:+1:13: +1:15
+          StorageLive(_3);                 // scope 1 at $DIR/sroa.rs:+2:9: +2:10
+-         _3 = (_2.0: u8);                 // scope 1 at $DIR/sroa.rs:+2:13: +2:16
++         _3 = _5;                         // scope 1 at $DIR/sroa.rs:+2:13: +2:16
+          StorageLive(_4);                 // scope 2 at $DIR/sroa.rs:+3:9: +3:10
+-         _4 = (_2.2: &str);               // scope 2 at $DIR/sroa.rs:+3:13: +3:16
++         _4 = _7;                         // scope 2 at $DIR/sroa.rs:+3:13: +3:16
+          _0 = const ();                   // scope 0 at $DIR/sroa.rs:+0:24: +4:2
+          StorageDead(_4);                 // scope 2 at $DIR/sroa.rs:+4:1: +4:2
+          StorageDead(_3);                 // scope 1 at $DIR/sroa.rs:+4:1: +4:2
+-         StorageDead(_2);                 // scope 0 at $DIR/sroa.rs:+4:1: +4:2
++         StorageDead(_5);                 // scope 0 at $DIR/sroa.rs:+4:1: +4:2
++         StorageDead(_6);                 // scope 0 at $DIR/sroa.rs:+4:1: +4:2
++         StorageDead(_7);                 // scope 0 at $DIR/sroa.rs:+4:1: +4:2
++         StorageDead(_8);                 // scope 0 at $DIR/sroa.rs:+4:1: +4:2
++         nop;                             // scope 0 at $DIR/sroa.rs:+4:1: +4:2
+          return;                          // scope 0 at $DIR/sroa.rs:+4:2: +4:2
+      }
+  }
+  
diff --git a/tests/mir-opt/sroa.rs b/tests/mir-opt/sroa.rs
index ff8deb40d7d..471aac9f9d8 100644
--- a/tests/mir-opt/sroa.rs
+++ b/tests/mir-opt/sroa.rs
@@ -12,17 +12,14 @@ impl Drop for Tag {
     fn drop(&mut self) {}
 }
 
-// EMIT_MIR sroa.dropping.ScalarReplacementOfAggregates.diff
 pub fn dropping() {
     S(Tag(0), Tag(1), Tag(2)).1;
 }
 
-// EMIT_MIR sroa.enums.ScalarReplacementOfAggregates.diff
 pub fn enums(a: usize) -> usize {
     if let Some(a) = Some(a) { a } else { 0 }
 }
 
-// EMIT_MIR sroa.structs.ScalarReplacementOfAggregates.diff
 pub fn structs(a: f32) -> f32 {
     struct U {
         _foo: usize,
@@ -32,7 +29,6 @@ pub fn structs(a: f32) -> f32 {
     U { _foo: 0, a }.a
 }
 
-// EMIT_MIR sroa.unions.ScalarReplacementOfAggregates.diff
 pub fn unions(a: f32) -> u32 {
     union Repr {
         f: f32,
@@ -41,6 +37,7 @@ pub fn unions(a: f32) -> u32 {
     unsafe { Repr { f: a }.u }
 }
 
+#[derive(Copy, Clone)]
 struct Foo {
     a: u8,
     b: (),
@@ -52,7 +49,6 @@ fn g() -> u32 {
     3
 }
 
-// EMIT_MIR sroa.flat.ScalarReplacementOfAggregates.diff
 pub fn flat() {
     let Foo { a, b, c, d } = Foo { a: 5, b: (), c: "a", d: Some(-4) };
     let _ = a;
@@ -72,12 +68,25 @@ fn f(a: *const u32) {
     println!("{}", unsafe { *a.add(2) });
 }
 
-// EMIT_MIR sroa.escaping.ScalarReplacementOfAggregates.diff
 pub fn escaping() {
     // Verify this struct is not flattened.
     f(&Escaping { a: 1, b: 2, c: g() }.a);
 }
 
+fn copies(x: Foo) {
+    let y = x;
+    let t = y.a;
+    let u = y.c;
+    let z = y;
+    let a = z.b;
+}
+
+fn ref_copies(x: &Foo) {
+    let y = *x;
+    let t = y.a;
+    let u = y.c;
+}
+
 fn main() {
     dropping();
     enums(5);
@@ -85,4 +94,15 @@ fn main() {
     unions(5.);
     flat();
     escaping();
+    copies(Foo { a: 5, b: (), c: "a", d: Some(-4) });
+    ref_copies(&Foo { a: 5, b: (), c: "a", d: Some(-4) });
 }
+
+// EMIT_MIR sroa.dropping.ScalarReplacementOfAggregates.diff
+// EMIT_MIR sroa.enums.ScalarReplacementOfAggregates.diff
+// EMIT_MIR sroa.structs.ScalarReplacementOfAggregates.diff
+// EMIT_MIR sroa.unions.ScalarReplacementOfAggregates.diff
+// EMIT_MIR sroa.flat.ScalarReplacementOfAggregates.diff
+// EMIT_MIR sroa.escaping.ScalarReplacementOfAggregates.diff
+// EMIT_MIR sroa.copies.ScalarReplacementOfAggregates.diff
+// EMIT_MIR sroa.ref_copies.ScalarReplacementOfAggregates.diff
diff --git a/tests/mir-opt/sroa.structs.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa.structs.ScalarReplacementOfAggregates.diff
index 69d74c351de..2c63d8b266d 100644
--- a/tests/mir-opt/sroa.structs.ScalarReplacementOfAggregates.diff
+++ b/tests/mir-opt/sroa.structs.ScalarReplacementOfAggregates.diff
@@ -13,21 +13,20 @@
 -         StorageLive(_2);                 // scope 0 at $DIR/sroa.rs:+6:5: +6:21
 +         StorageLive(_4);                 // scope 0 at $DIR/sroa.rs:+6:5: +6:21
 +         StorageLive(_5);                 // scope 0 at $DIR/sroa.rs:+6:5: +6:21
++         nop;                             // scope 0 at $DIR/sroa.rs:+6:5: +6:21
           StorageLive(_3);                 // scope 0 at $DIR/sroa.rs:+6:18: +6:19
           _3 = _1;                         // scope 0 at $DIR/sroa.rs:+6:18: +6:19
--         Deinit(_2);                      // scope 0 at $DIR/sroa.rs:+6:5: +6:21
--         (_2.0: usize) = const 0_usize;   // scope 0 at $DIR/sroa.rs:+6:5: +6:21
--         (_2.1: f32) = move _3;           // scope 0 at $DIR/sroa.rs:+6:5: +6:21
-+         Deinit(_4);                      // scope 0 at $DIR/sroa.rs:+6:5: +6:21
-+         Deinit(_5);                      // scope 0 at $DIR/sroa.rs:+6:5: +6:21
+-         _2 = U { _foo: const 0_usize, a: move _3 }; // scope 0 at $DIR/sroa.rs:+6:5: +6:21
 +         _4 = const 0_usize;              // scope 0 at $DIR/sroa.rs:+6:5: +6:21
 +         _5 = move _3;                    // scope 0 at $DIR/sroa.rs:+6:5: +6:21
++         nop;                             // scope 0 at $DIR/sroa.rs:+6:5: +6:21
           StorageDead(_3);                 // scope 0 at $DIR/sroa.rs:+6:20: +6:21
 -         _0 = (_2.1: f32);                // scope 0 at $DIR/sroa.rs:+6:5: +6:23
 -         StorageDead(_2);                 // scope 0 at $DIR/sroa.rs:+7:1: +7:2
 +         _0 = _5;                         // scope 0 at $DIR/sroa.rs:+6:5: +6:23
 +         StorageDead(_4);                 // scope 0 at $DIR/sroa.rs:+7:1: +7:2
 +         StorageDead(_5);                 // scope 0 at $DIR/sroa.rs:+7:1: +7:2
++         nop;                             // scope 0 at $DIR/sroa.rs:+7:1: +7:2
           return;                          // scope 0 at $DIR/sroa.rs:+7:2: +7:2
       }
   }
diff --git a/tests/mir-opt/sroa.unions.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa.unions.ScalarReplacementOfAggregates.diff
index 03ca976df7b..adfb01385d4 100644
--- a/tests/mir-opt/sroa.unions.ScalarReplacementOfAggregates.diff
+++ b/tests/mir-opt/sroa.unions.ScalarReplacementOfAggregates.diff
@@ -13,8 +13,7 @@
           StorageLive(_2);                 // scope 1 at $DIR/sroa.rs:+5:14: +5:27
           StorageLive(_3);                 // scope 1 at $DIR/sroa.rs:+5:24: +5:25
           _3 = _1;                         // scope 1 at $DIR/sroa.rs:+5:24: +5:25
-          Deinit(_2);                      // scope 1 at $DIR/sroa.rs:+5:14: +5:27
-          (_2.0: f32) = move _3;           // scope 1 at $DIR/sroa.rs:+5:14: +5:27
+          _2 = Repr { f: move _3 };        // scope 1 at $DIR/sroa.rs:+5:14: +5:27
           StorageDead(_3);                 // scope 1 at $DIR/sroa.rs:+5:26: +5:27
           _0 = (_2.1: u32);                // scope 1 at $DIR/sroa.rs:+5:14: +5:29
           StorageDead(_2);                 // scope 0 at $DIR/sroa.rs:+6:1: +6:2
diff --git a/tests/mir-opt/try_identity_e2e.new.PreCodegen.after.mir b/tests/mir-opt/try_identity_e2e.new.PreCodegen.after.mir
index a4d2660ca6a..b9cc1057513 100644
--- a/tests/mir-opt/try_identity_e2e.new.PreCodegen.after.mir
+++ b/tests/mir-opt/try_identity_e2e.new.PreCodegen.after.mir
@@ -26,45 +26,40 @@ fn new(_1: Result<T, E>) -> Result<T, E> {
     bb0: {
         StorageLive(_2);                 // scope 0 at $DIR/try_identity_e2e.rs:+2:15: +7:10
         _3 = discriminant(_1);           // scope 0 at $DIR/try_identity_e2e.rs:+3:19: +3:20
-        switchInt(move _3) -> [0: bb2, 1: bb1, otherwise: bb4]; // scope 0 at $DIR/try_identity_e2e.rs:+3:13: +3:20
+        switchInt(move _3) -> [0: bb2, 1: bb1, otherwise: bb5]; // scope 0 at $DIR/try_identity_e2e.rs:+3:13: +3:20
     }
 
     bb1: {
         _5 = move ((_1 as Err).0: E);    // scope 0 at $DIR/try_identity_e2e.rs:+5:21: +5:22
-        Deinit(_2);                      // scope 2 at $DIR/try_identity_e2e.rs:+5:27: +5:48
-        ((_2 as Break).0: E) = move _5;  // scope 2 at $DIR/try_identity_e2e.rs:+5:27: +5:48
-        discriminant(_2) = 1;            // scope 2 at $DIR/try_identity_e2e.rs:+5:27: +5:48
-        _6 = discriminant(_2);           // scope 0 at $DIR/try_identity_e2e.rs:+2:15: +7:10
-        switchInt(move _6) -> [0: bb5, 1: bb3, otherwise: bb4]; // scope 0 at $DIR/try_identity_e2e.rs:+2:9: +7:10
+        _2 = ControlFlow::<E, T>::Break(move _5); // scope 2 at $DIR/try_identity_e2e.rs:+5:27: +5:48
+        goto -> bb3;                     // scope 0 at $DIR/try_identity_e2e.rs:+5:47: +5:48
     }
 
     bb2: {
         _4 = move ((_1 as Ok).0: T);     // scope 0 at $DIR/try_identity_e2e.rs:+4:20: +4:21
-        Deinit(_2);                      // scope 1 at $DIR/try_identity_e2e.rs:+4:26: +4:50
-        ((_2 as Continue).0: T) = move _4; // scope 1 at $DIR/try_identity_e2e.rs:+4:26: +4:50
-        discriminant(_2) = 0;            // scope 1 at $DIR/try_identity_e2e.rs:+4:26: +4:50
-        _6 = discriminant(_2);           // scope 0 at $DIR/try_identity_e2e.rs:+2:15: +7:10
-        switchInt(move _6) -> [0: bb5, 1: bb3, otherwise: bb4]; // scope 0 at $DIR/try_identity_e2e.rs:+2:9: +7:10
+        _2 = ControlFlow::<E, T>::Continue(move _4); // scope 1 at $DIR/try_identity_e2e.rs:+4:26: +4:50
+        goto -> bb3;                     // scope 0 at $DIR/try_identity_e2e.rs:+4:49: +4:50
     }
 
     bb3: {
+        _6 = discriminant(_2);           // scope 0 at $DIR/try_identity_e2e.rs:+2:15: +7:10
+        switchInt(move _6) -> [0: bb6, 1: bb4, otherwise: bb5]; // scope 0 at $DIR/try_identity_e2e.rs:+2:9: +7:10
+    }
+
+    bb4: {
         _8 = move ((_2 as Break).0: E);  // scope 0 at $DIR/try_identity_e2e.rs:+9:32: +9:33
-        Deinit(_0);                      // scope 4 at $DIR/try_identity_e2e.rs:+9:45: +9:51
-        ((_0 as Err).0: E) = move _8;    // scope 4 at $DIR/try_identity_e2e.rs:+9:45: +9:51
-        discriminant(_0) = 1;            // scope 4 at $DIR/try_identity_e2e.rs:+9:45: +9:51
+        _0 = Result::<T, E>::Err(move _8); // scope 4 at $DIR/try_identity_e2e.rs:+9:45: +9:51
         StorageDead(_2);                 // scope 0 at $DIR/try_identity_e2e.rs:+12:1: +12:2
         return;                          // scope 0 at $DIR/try_identity_e2e.rs:+12:1: +12:2
     }
 
-    bb4: {
+    bb5: {
         unreachable;                     // scope 0 at $DIR/try_identity_e2e.rs:+2:15: +7:10
     }
 
-    bb5: {
+    bb6: {
         _7 = move ((_2 as Continue).0: T); // scope 0 at $DIR/try_identity_e2e.rs:+8:35: +8:36
-        Deinit(_0);                      // scope 0 at $DIR/try_identity_e2e.rs:+1:5: +11:6
-        ((_0 as Ok).0: T) = move _7;     // scope 0 at $DIR/try_identity_e2e.rs:+1:5: +11:6
-        discriminant(_0) = 0;            // scope 0 at $DIR/try_identity_e2e.rs:+1:5: +11:6
+        _0 = Result::<T, E>::Ok(move _7); // scope 0 at $DIR/try_identity_e2e.rs:+1:5: +11:6
         StorageDead(_2);                 // scope 0 at $DIR/try_identity_e2e.rs:+12:1: +12:2
         return;                          // scope 0 at $DIR/try_identity_e2e.rs:+12:1: +12:2
     }
diff --git a/tests/mir-opt/try_identity_e2e.old.PreCodegen.after.mir b/tests/mir-opt/try_identity_e2e.old.PreCodegen.after.mir
index 37851c66a60..d88ae5ac93e 100644
--- a/tests/mir-opt/try_identity_e2e.old.PreCodegen.after.mir
+++ b/tests/mir-opt/try_identity_e2e.old.PreCodegen.after.mir
@@ -20,9 +20,7 @@ fn old(_1: Result<T, E>) -> Result<T, E> {
 
     bb1: {
         _4 = move ((_1 as Err).0: E);    // scope 0 at $DIR/try_identity_e2e.rs:+4:17: +4:18
-        Deinit(_0);                      // scope 2 at $DIR/try_identity_e2e.rs:+4:30: +4:36
-        ((_0 as Err).0: E) = move _4;    // scope 2 at $DIR/try_identity_e2e.rs:+4:30: +4:36
-        discriminant(_0) = 1;            // scope 2 at $DIR/try_identity_e2e.rs:+4:30: +4:36
+        _0 = Result::<T, E>::Err(move _4); // scope 2 at $DIR/try_identity_e2e.rs:+4:30: +4:36
         return;                          // scope 0 at $DIR/try_identity_e2e.rs:+7:1: +7:2
     }
 
@@ -32,9 +30,7 @@ fn old(_1: Result<T, E>) -> Result<T, E> {
 
     bb3: {
         _3 = move ((_1 as Ok).0: T);     // scope 0 at $DIR/try_identity_e2e.rs:+3:16: +3:17
-        Deinit(_0);                      // scope 0 at $DIR/try_identity_e2e.rs:+1:5: +6:6
-        ((_0 as Ok).0: T) = move _3;     // scope 0 at $DIR/try_identity_e2e.rs:+1:5: +6:6
-        discriminant(_0) = 0;            // scope 0 at $DIR/try_identity_e2e.rs:+1:5: +6:6
+        _0 = Result::<T, E>::Ok(move _3); // scope 0 at $DIR/try_identity_e2e.rs:+1:5: +6:6
         return;                          // scope 0 at $DIR/try_identity_e2e.rs:+7:1: +7:2
     }
 }
diff --git a/tests/mir-opt/uninhabited_enum_branching.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir b/tests/mir-opt/uninhabited_enum_branching.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir
index 39ec0527759..03f37b14b28 100644
--- a/tests/mir-opt/uninhabited_enum_branching.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir
+++ b/tests/mir-opt/uninhabited_enum_branching.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir
@@ -15,8 +15,7 @@ fn main() -> () {
     bb0: {
         StorageLive(_1);                 // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:5: +5:6
         StorageLive(_2);                 // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:11: +1:19
-        Deinit(_2);                      // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:11: +1:19
-        discriminant(_2) = 2;            // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:11: +1:19
+        _2 = Test1::C;                   // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:11: +1:19
         _3 = discriminant(_2);           // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:11: +1:19
         switchInt(move _3) -> [2: bb1, otherwise: bb2]; // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:5: +1:19
     }
@@ -33,8 +32,7 @@ fn main() -> () {
         StorageDead(_1);                 // scope 0 at $DIR/uninhabited_enum_branching.rs:+5:6: +5:7
         StorageLive(_6);                 // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:5: +10:6
         StorageLive(_7);                 // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:11: +7:19
-        Deinit(_7);                      // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:11: +7:19
-        discriminant(_7) = 0;            // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:11: +7:19
+        _7 = Test2::D;                   // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:11: +7:19
         _8 = discriminant(_7);           // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:11: +7:19
         switchInt(move _8) -> [4: bb5, 5: bb3, otherwise: bb4]; // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:5: +7:19
     }
diff --git a/tests/mir-opt/uninhabited_enum_branching.main.UninhabitedEnumBranching.diff b/tests/mir-opt/uninhabited_enum_branching.main.UninhabitedEnumBranching.diff
index 598413a1d82..671e116226b 100644
--- a/tests/mir-opt/uninhabited_enum_branching.main.UninhabitedEnumBranching.diff
+++ b/tests/mir-opt/uninhabited_enum_branching.main.UninhabitedEnumBranching.diff
@@ -16,8 +16,7 @@
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:5: +5:6
           StorageLive(_2);                 // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:11: +1:19
-          Deinit(_2);                      // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:11: +1:19
-          discriminant(_2) = 2;            // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:11: +1:19
+          _2 = Test1::C;                   // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:11: +1:19
           _3 = discriminant(_2);           // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:11: +1:19
 -         switchInt(move _3) -> [0: bb3, 1: bb4, 2: bb1, otherwise: bb2]; // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:5: +1:19
 +         switchInt(move _3) -> [2: bb1, otherwise: bb2]; // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:5: +1:19
@@ -62,8 +61,7 @@
           StorageDead(_1);                 // scope 0 at $DIR/uninhabited_enum_branching.rs:+5:6: +5:7
           StorageLive(_6);                 // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:5: +10:6
           StorageLive(_7);                 // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:11: +7:19
-          Deinit(_7);                      // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:11: +7:19
-          discriminant(_7) = 0;            // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:11: +7:19
+          _7 = Test2::D;                   // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:11: +7:19
           _8 = discriminant(_7);           // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:11: +7:19
           switchInt(move _8) -> [4: bb8, 5: bb6, otherwise: bb7]; // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:5: +7:19
       }
diff --git a/tests/mir-opt/uninhabited_enum_branching2.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir b/tests/mir-opt/uninhabited_enum_branching2.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir
index c8cd6f6c1ea..eb2a76ed1d5 100644
--- a/tests/mir-opt/uninhabited_enum_branching2.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir
+++ b/tests/mir-opt/uninhabited_enum_branching2.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir
@@ -22,11 +22,8 @@ fn main() -> () {
     bb0: {
         StorageLive(_1);                 // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:9: +1:13
         StorageLive(_2);                 // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:38: +1:46
-        Deinit(_2);                      // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:38: +1:46
-        discriminant(_2) = 2;            // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:38: +1:46
-        Deinit(_1);                      // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:16: +1:48
-        (_1.0: u32) = const 51_u32;      // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:16: +1:48
-        (_1.1: Test1) = move _2;         // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:16: +1:48
+        _2 = Test1::C;                   // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:38: +1:46
+        _1 = Plop { xx: const 51_u32, test1: move _2 }; // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:16: +1:48
         StorageDead(_2);                 // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:47: +1:48
         StorageLive(_3);                 // scope 1 at $DIR/uninhabited_enum_branching2.rs:+3:5: +8:6
         StorageLive(_4);                 // scope 1 at $DIR/uninhabited_enum_branching2.rs:+3:11: +3:22
diff --git a/tests/mir-opt/uninhabited_enum_branching2.main.UninhabitedEnumBranching.diff b/tests/mir-opt/uninhabited_enum_branching2.main.UninhabitedEnumBranching.diff
index 2aee6d2681d..4e797774dba 100644
--- a/tests/mir-opt/uninhabited_enum_branching2.main.UninhabitedEnumBranching.diff
+++ b/tests/mir-opt/uninhabited_enum_branching2.main.UninhabitedEnumBranching.diff
@@ -23,11 +23,8 @@
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:9: +1:13
           StorageLive(_2);                 // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:38: +1:46
-          Deinit(_2);                      // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:38: +1:46
-          discriminant(_2) = 2;            // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:38: +1:46
-          Deinit(_1);                      // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:16: +1:48
-          (_1.0: u32) = const 51_u32;      // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:16: +1:48
-          (_1.1: Test1) = move _2;         // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:16: +1:48
+          _2 = Test1::C;                   // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:38: +1:46
+          _1 = Plop { xx: const 51_u32, test1: move _2 }; // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:16: +1:48
           StorageDead(_2);                 // scope 0 at $DIR/uninhabited_enum_branching2.rs:+1:47: +1:48
           StorageLive(_3);                 // scope 1 at $DIR/uninhabited_enum_branching2.rs:+3:5: +8:6
           StorageLive(_4);                 // scope 1 at $DIR/uninhabited_enum_branching2.rs:+3:11: +3:22
diff --git a/tests/mir-opt/unusual_item_types.Test-X-{constructor#0}.built.after.mir b/tests/mir-opt/unusual_item_types.Test-X-{constructor#0}.built.after.mir
index ee029676311..8b271135cc3 100644
--- a/tests/mir-opt/unusual_item_types.Test-X-{constructor#0}.built.after.mir
+++ b/tests/mir-opt/unusual_item_types.Test-X-{constructor#0}.built.after.mir
@@ -4,9 +4,7 @@ fn Test::X(_1: usize) -> Test {
     let mut _0: Test;                    // return place in scope 0 at $DIR/unusual_item_types.rs:+0:5: +0:6
 
     bb0: {
-        Deinit(_0);                      // scope 0 at $DIR/unusual_item_types.rs:+0:5: +0:6
-        ((_0 as X).0: usize) = move _1;  // scope 0 at $DIR/unusual_item_types.rs:+0:5: +0:6
-        discriminant(_0) = 0;            // scope 0 at $DIR/unusual_item_types.rs:+0:5: +0:6
+        _0 = Test::X(move _1);           // scope 0 at $DIR/unusual_item_types.rs:+0:5: +0:6
         return;                          // scope 0 at $DIR/unusual_item_types.rs:+0:5: +0:6
     }
 }
diff --git a/tests/mir-opt/while_let_loops.change_loop_body.ConstProp.diff b/tests/mir-opt/while_let_loops.change_loop_body.ConstProp.diff
index bb1de59d4a7..a4f2d8c84d8 100644
--- a/tests/mir-opt/while_let_loops.change_loop_body.ConstProp.diff
+++ b/tests/mir-opt/while_let_loops.change_loop_body.ConstProp.diff
@@ -16,8 +16,7 @@
           StorageLive(_1);                 // scope 0 at $DIR/while_let_loops.rs:+1:9: +1:15
           _1 = const 0_i32;                // scope 0 at $DIR/while_let_loops.rs:+1:18: +1:19
           StorageLive(_2);                 // scope 2 at $DIR/while_let_loops.rs:+2:28: +2:32
-          Deinit(_2);                      // scope 2 at $DIR/while_let_loops.rs:+2:28: +2:32
-          discriminant(_2) = 0;            // scope 2 at $DIR/while_let_loops.rs:+2:28: +2:32
+          _2 = Option::<u32>::None;        // scope 2 at $DIR/while_let_loops.rs:+2:28: +2:32
 -         _3 = discriminant(_2);           // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
 -         switchInt(move _3) -> [1: bb1, otherwise: bb3]; // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
 +         _3 = const 0_isize;              // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
diff --git a/tests/rustdoc-gui/src/test_docs/lib.rs b/tests/rustdoc-gui/src/test_docs/lib.rs
index 51250439694..6ad1e8b4f67 100644
--- a/tests/rustdoc-gui/src/test_docs/lib.rs
+++ b/tests/rustdoc-gui/src/test_docs/lib.rs
@@ -340,7 +340,7 @@ pub mod details {
 pub mod doc_block_table {
 
     pub trait DocBlockTableTrait {
-        fn func();
+        fn foo();
     }
 
     /// Struct doc.
@@ -359,7 +359,7 @@ pub mod doc_block_table {
         /// | header1                  | header2                  |
         /// |--------------------------|--------------------------|
         /// | Lorem Ipsum, Lorem Ipsum | Lorem Ipsum, Lorem Ipsum |
-        fn func() {
+        fn foo() {
             println!();
         }
     }
@@ -474,3 +474,15 @@ impl TypeWithImplDoc {
 ///
 /// </sub>
 pub mod codeblock_sub {}
+pub mod search_results {
+
+    pub struct SearchResults {
+        pub foo: i32,
+    }
+
+    #[macro_export]
+    macro_rules! foo {
+        () => {};
+    }
+
+}
diff --git a/tests/rustdoc-js-std/regex.js b/tests/rustdoc-js-std/regex.js
new file mode 100644
index 00000000000..a6843c595f7
--- /dev/null
+++ b/tests/rustdoc-js-std/regex.js
@@ -0,0 +1,10 @@
+// exact-check
+
+// https://github.com/rust-lang/rust/issues/103357
+const QUERY = 'regex';
+
+const EXPECTED = {
+    'others': [],
+    'in_args': [],
+    'returned': [],
+};
diff --git a/tests/rustdoc-js-std/typed-query.js b/tests/rustdoc-js-std/typed-query.js
index fd5c5489d79..eeb3e188869 100644
--- a/tests/rustdoc-js-std/typed-query.js
+++ b/tests/rustdoc-js-std/typed-query.js
@@ -9,9 +9,5 @@ const EXPECTED = {
         { 'path': 'std', 'name': 'println' },
         { 'path': 'std', 'name': 'eprint' },
         { 'path': 'std', 'name': 'eprintln' },
-        { 'path': 'std::pin', 'name': 'pin' },
-        { 'path': 'std::future', 'name': 'join' },
-        { 'path': 'std', 'name': 'line' },
-        { 'path': 'std', 'name': 'write' },
     ],
 };
diff --git a/tests/rustdoc-js/doc-alias.js b/tests/rustdoc-js/doc-alias.js
index 7bb0cbe388f..62c8e7a74b9 100644
--- a/tests/rustdoc-js/doc-alias.js
+++ b/tests/rustdoc-js/doc-alias.js
@@ -1,5 +1,3 @@
-// exact-check
-
 const QUERY = [
     'StructItem',
     'StructFieldItem',
diff --git a/tests/rustdoc-js/module-substring.js b/tests/rustdoc-js/module-substring.js
index a446c39ebad..f17a97f13dc 100644
--- a/tests/rustdoc-js/module-substring.js
+++ b/tests/rustdoc-js/module-substring.js
@@ -4,6 +4,5 @@ const EXPECTED = {
     'others': [
         { 'path': 'module_substring::Sig', 'name': 'pc' },
         { 'path': 'module_substring::Si', 'name': 'pc' },
-        { 'path': 'module_substring::Si', 'name': 'pa' },
     ],
 };
diff --git a/tests/rustdoc-ui/z-help.stdout b/tests/rustdoc-ui/z-help.stdout
index 4f07fca82d1..706db892cb3 100644
--- a/tests/rustdoc-ui/z-help.stdout
+++ b/tests/rustdoc-ui/z-help.stdout
@@ -77,7 +77,6 @@
     -Z                            llvm-plugins=val -- a list LLVM plugins to enable (space separated)
     -Z                         llvm-time-trace=val -- generate JSON tracing data file from LLVM data (default: no)
     -Z                         location-detail=val -- what location details should be tracked when using caller_location, either `none`, or a comma separated list of location details, for which valid options are `file`, `line`, and `column` (default: `file,line,column`)
-    -Z                           log-backtrace=val -- add a backtrace along with logging
     -Z                                      ls=val -- list the symbols defined by a library crate (default: no)
     -Z                         macro-backtrace=val -- show macro backtraces (default: no)
     -Z             maximal-hir-to-mir-coverage=val -- save as much information as possible about the correspondence between MIR and HIR as source scopes (default: no)
diff --git a/tests/rustdoc/async-fn.rs b/tests/rustdoc/async-fn.rs
index 3db344af674..70bcbcb6ff4 100644
--- a/tests/rustdoc/async-fn.rs
+++ b/tests/rustdoc/async-fn.rs
@@ -77,7 +77,7 @@ struct AsyncFdReadyGuard<'a, T> { x: &'a T }
 
 impl Foo {
     // @has async_fn/struct.Foo.html
-    // @has - '//*[@class="method"]' 'pub async fn complicated_lifetimes( &self, context: &impl Bar) -> impl Iterator<Item = &usize>'
+    // @has - '//*[@class="method"]' 'pub async fn complicated_lifetimes( &self, context: &impl Bar ) -> impl Iterator<Item = &usize>'
     pub async fn complicated_lifetimes(&self, context: &impl Bar) -> impl Iterator<Item = &usize> {}
     // taken from `tokio` as an example of a method that was particularly bad before
     // @has - '//*[@class="method"]' "pub async fn readable<T>(&self) -> Result<AsyncFdReadyGuard<'_, T>, ()>"
diff --git a/tests/rustdoc/auxiliary/inline-default-methods.rs b/tests/rustdoc/auxiliary/inline-default-methods.rs
index 8a636f44921..f06a20b27dc 100644
--- a/tests/rustdoc/auxiliary/inline-default-methods.rs
+++ b/tests/rustdoc/auxiliary/inline-default-methods.rs
@@ -4,3 +4,15 @@ pub trait Foo {
     fn bar(&self);
     fn foo(&mut self) {}
 }
+
+pub trait Bar {
+    fn bar(&self);
+    fn foo1(&mut self) {}
+    fn foo2(&mut self) {}
+}
+
+pub trait Baz {
+    fn bar1(&self);
+    fn bar2(&self);
+    fn foo(&mut self) {}
+}
diff --git a/tests/rustdoc/const-generics/const-generics-docs.rs b/tests/rustdoc/const-generics/const-generics-docs.rs
index 7e27ef8d8e5..828486a41d4 100644
--- a/tests/rustdoc/const-generics/const-generics-docs.rs
+++ b/tests/rustdoc/const-generics/const-generics-docs.rs
@@ -31,7 +31,7 @@ impl Trait<{1 + 2}> for u8 {}
 impl<const N: usize> Trait<N> for [u8; N] {}
 
 // @has foo/struct.Foo.html '//pre[@class="rust item-decl"]' \
-//      'pub struct Foo<const N: usize>where u8: Trait<N>'
+//      'pub struct Foo<const N: usize> where u8: Trait<N>'
 pub struct Foo<const N: usize> where u8: Trait<N>;
 // @has foo/struct.Bar.html '//pre[@class="rust item-decl"]' 'pub struct Bar<T, const N: usize>(_)'
 pub struct Bar<T, const N: usize>([T; N]);
diff --git a/tests/rustdoc/decl-trailing-whitespace.declaration.html b/tests/rustdoc/decl-trailing-whitespace.declaration.html
index 02b51b34461..d73393633f3 100644
--- a/tests/rustdoc/decl-trailing-whitespace.declaration.html
+++ b/tests/rustdoc/decl-trailing-whitespace.declaration.html
@@ -1,7 +1,23 @@
 <code>pub trait Write {
-    fn <a href="#tymethod.poll_write" class="fn">poll_write</a>(<br />&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;self: <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="{{channel}}/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;,<br />&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;cx: &amp;mut <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="{{channel}}/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;,<br />&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;buf: &amp;mut [<a class="primitive" href="{{channel}}/std/primitive.usize.html">usize</a>]<br />&#160;&#160;&#160;&#160;) -&gt; <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="enum" href="{{channel}}/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="{{channel}}/std/primitive.usize.html">usize</a>, <a class="struct" href="struct.Error.html" title="struct foo::Error">Error</a>&gt;&gt;;
-<span class="item-spacer" />    fn <a href="#tymethod.poll_flush" class="fn">poll_flush</a>(<br />&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;self: <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="{{channel}}/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;,<br />&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;cx: &amp;mut <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="{{channel}}/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;<br />&#160;&#160;&#160;&#160;) -&gt; <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="enum" href="{{channel}}/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="{{channel}}/std/primitive.unit.html">()</a>, <a class="struct" href="struct.Error.html" title="struct foo::Error">Error</a>&gt;&gt;;
-<span class="item-spacer" />    fn <a href="#tymethod.poll_close" class="fn">poll_close</a>(<br />&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;self: <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="{{channel}}/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;,<br />&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;cx: &amp;mut <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="{{channel}}/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;<br />&#160;&#160;&#160;&#160;) -&gt; <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="enum" href="{{channel}}/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="{{channel}}/std/primitive.unit.html">()</a>, <a class="struct" href="struct.Error.html" title="struct foo::Error">Error</a>&gt;&gt;;
+    // Required methods
+    fn <a href="#tymethod.poll_write" class="fn">poll_write</a>(
+        self: <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="{{channel}}/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;,
+        cx: &amp;mut <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="{{channel}}/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;,
+        buf: &amp;mut [<a class="primitive" href="{{channel}}/std/primitive.usize.html">usize</a>]
+    ) -&gt; <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="enum" href="{{channel}}/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="{{channel}}/std/primitive.usize.html">usize</a>, <a class="struct" href="struct.Error.html" title="struct foo::Error">Error</a>&gt;&gt;;
+<span class="item-spacer" />    fn <a href="#tymethod.poll_flush" class="fn">poll_flush</a>(
+        self: <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="{{channel}}/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;,
+        cx: &amp;mut <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="{{channel}}/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;
+    ) -&gt; <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="enum" href="{{channel}}/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="{{channel}}/std/primitive.unit.html">()</a>, <a class="struct" href="struct.Error.html" title="struct foo::Error">Error</a>&gt;&gt;;
+<span class="item-spacer" />    fn <a href="#tymethod.poll_close" class="fn">poll_close</a>(
+        self: <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="{{channel}}/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;,
+        cx: &amp;mut <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="{{channel}}/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;
+    ) -&gt; <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="enum" href="{{channel}}/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="{{channel}}/std/primitive.unit.html">()</a>, <a class="struct" href="struct.Error.html" title="struct foo::Error">Error</a>&gt;&gt;;
 
-    fn <a href="#method.poll_write_vectored" class="fn">poll_write_vectored</a>(<br />&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;self: <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="{{channel}}/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;,<br />&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;cx: &amp;mut <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="{{channel}}/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;,<br />&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;bufs: &amp;[<a class="primitive" href="{{channel}}/std/primitive.usize.html">usize</a>]<br />&#160;&#160;&#160;&#160;) -&gt; <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="enum" href="{{channel}}/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="{{channel}}/std/primitive.usize.html">usize</a>, <a class="struct" href="struct.Error.html" title="struct foo::Error">Error</a>&gt;&gt; { ... }
+    // Provided method
+    fn <a href="#method.poll_write_vectored" class="fn">poll_write_vectored</a>(
+        self: <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="{{channel}}/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;,
+        cx: &amp;mut <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="{{channel}}/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;,
+        bufs: &amp;[<a class="primitive" href="{{channel}}/std/primitive.usize.html">usize</a>]
+    ) -&gt; <a class="enum" href="{{channel}}/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="enum" href="{{channel}}/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="{{channel}}/std/primitive.usize.html">usize</a>, <a class="struct" href="struct.Error.html" title="struct foo::Error">Error</a>&gt;&gt; { ... }
 }</code>
\ No newline at end of file
diff --git a/tests/rustdoc/doc-notable_trait.some-struct-new.html b/tests/rustdoc/doc-notable_trait.some-struct-new.html
index 384be668954..e8f4f600045 100644
--- a/tests/rustdoc/doc-notable_trait.some-struct-new.html
+++ b/tests/rustdoc/doc-notable_trait.some-struct-new.html
@@ -1 +1 @@
-<script type="text/json" id="notable-traits-data">{"SomeStruct":"&lt;h3&gt;Notable traits for &lt;code&gt;&lt;a class=\"struct\" href=\"struct.SomeStruct.html\" title=\"struct doc_notable_trait::SomeStruct\"&gt;SomeStruct&lt;/a&gt;&lt;/code&gt;&lt;/h3&gt;&lt;pre&gt;&lt;code&gt;&lt;span class=\"where fmt-newline\"&gt;impl &lt;a class=\"trait\" href=\"trait.SomeTrait.html\" title=\"trait doc_notable_trait::SomeTrait\"&gt;SomeTrait&lt;/a&gt; for &lt;a class=\"struct\" href=\"struct.SomeStruct.html\" title=\"struct doc_notable_trait::SomeStruct\"&gt;SomeStruct&lt;/a&gt;&lt;/span&gt;","Wrapper&lt;Self&gt;":"&lt;h3&gt;Notable traits for &lt;code&gt;&lt;a class=\"struct\" href=\"struct.Wrapper.html\" title=\"struct doc_notable_trait::Wrapper\"&gt;Wrapper&lt;/a&gt;&amp;lt;T&amp;gt;&lt;/code&gt;&lt;/h3&gt;&lt;pre&gt;&lt;code&gt;&lt;span class=\"where fmt-newline\"&gt;impl&amp;lt;T:&amp;nbsp;&lt;a class=\"trait\" href=\"trait.SomeTrait.html\" title=\"trait doc_notable_trait::SomeTrait\"&gt;SomeTrait&lt;/a&gt;&amp;gt; &lt;a class=\"trait\" href=\"trait.SomeTrait.html\" title=\"trait doc_notable_trait::SomeTrait\"&gt;SomeTrait&lt;/a&gt; for &lt;a class=\"struct\" href=\"struct.Wrapper.html\" title=\"struct doc_notable_trait::Wrapper\"&gt;Wrapper&lt;/a&gt;&amp;lt;T&amp;gt;&lt;/span&gt;"}</script>
\ No newline at end of file
+<script type="text/json" id="notable-traits-data">{"SomeStruct":"&lt;h3&gt;Notable traits for &lt;code&gt;&lt;a class=\"struct\" href=\"struct.SomeStruct.html\" title=\"struct doc_notable_trait::SomeStruct\"&gt;SomeStruct&lt;/a&gt;&lt;/code&gt;&lt;/h3&gt;&lt;pre&gt;&lt;code&gt;&lt;span class=\"where fmt-newline\"&gt;impl &lt;a class=\"trait\" href=\"trait.SomeTrait.html\" title=\"trait doc_notable_trait::SomeTrait\"&gt;SomeTrait&lt;/a&gt; for &lt;a class=\"struct\" href=\"struct.SomeStruct.html\" title=\"struct doc_notable_trait::SomeStruct\"&gt;SomeStruct&lt;/a&gt;&lt;/span&gt;","Wrapper&lt;Self&gt;":"&lt;h3&gt;Notable traits for &lt;code&gt;&lt;a class=\"struct\" href=\"struct.Wrapper.html\" title=\"struct doc_notable_trait::Wrapper\"&gt;Wrapper&lt;/a&gt;&amp;lt;T&amp;gt;&lt;/code&gt;&lt;/h3&gt;&lt;pre&gt;&lt;code&gt;&lt;span class=\"where fmt-newline\"&gt;impl&amp;lt;T: &lt;a class=\"trait\" href=\"trait.SomeTrait.html\" title=\"trait doc_notable_trait::SomeTrait\"&gt;SomeTrait&lt;/a&gt;&amp;gt; &lt;a class=\"trait\" href=\"trait.SomeTrait.html\" title=\"trait doc_notable_trait::SomeTrait\"&gt;SomeTrait&lt;/a&gt; for &lt;a class=\"struct\" href=\"struct.Wrapper.html\" title=\"struct doc_notable_trait::Wrapper\"&gt;Wrapper&lt;/a&gt;&amp;lt;T&amp;gt;&lt;/span&gt;"}</script>
\ No newline at end of file
diff --git a/tests/rustdoc/doc-notable_trait.wrap-me.html b/tests/rustdoc/doc-notable_trait.wrap-me.html
index 0cc1ee10fd3..e7909669b15 100644
--- a/tests/rustdoc/doc-notable_trait.wrap-me.html
+++ b/tests/rustdoc/doc-notable_trait.wrap-me.html
@@ -1 +1 @@
-<script type="text/json" id="notable-traits-data">{"Wrapper&lt;Self&gt;":"&lt;h3&gt;Notable traits for &lt;code&gt;&lt;a class=\"struct\" href=\"struct.Wrapper.html\" title=\"struct doc_notable_trait::Wrapper\"&gt;Wrapper&lt;/a&gt;&amp;lt;T&amp;gt;&lt;/code&gt;&lt;/h3&gt;&lt;pre&gt;&lt;code&gt;&lt;span class=\"where fmt-newline\"&gt;impl&amp;lt;T:&amp;nbsp;&lt;a class=\"trait\" href=\"trait.SomeTrait.html\" title=\"trait doc_notable_trait::SomeTrait\"&gt;SomeTrait&lt;/a&gt;&amp;gt; &lt;a class=\"trait\" href=\"trait.SomeTrait.html\" title=\"trait doc_notable_trait::SomeTrait\"&gt;SomeTrait&lt;/a&gt; for &lt;a class=\"struct\" href=\"struct.Wrapper.html\" title=\"struct doc_notable_trait::Wrapper\"&gt;Wrapper&lt;/a&gt;&amp;lt;T&amp;gt;&lt;/span&gt;"}</script>
\ No newline at end of file
+<script type="text/json" id="notable-traits-data">{"Wrapper&lt;Self&gt;":"&lt;h3&gt;Notable traits for &lt;code&gt;&lt;a class=\"struct\" href=\"struct.Wrapper.html\" title=\"struct doc_notable_trait::Wrapper\"&gt;Wrapper&lt;/a&gt;&amp;lt;T&amp;gt;&lt;/code&gt;&lt;/h3&gt;&lt;pre&gt;&lt;code&gt;&lt;span class=\"where fmt-newline\"&gt;impl&amp;lt;T: &lt;a class=\"trait\" href=\"trait.SomeTrait.html\" title=\"trait doc_notable_trait::SomeTrait\"&gt;SomeTrait&lt;/a&gt;&amp;gt; &lt;a class=\"trait\" href=\"trait.SomeTrait.html\" title=\"trait doc_notable_trait::SomeTrait\"&gt;SomeTrait&lt;/a&gt; for &lt;a class=\"struct\" href=\"struct.Wrapper.html\" title=\"struct doc_notable_trait::Wrapper\"&gt;Wrapper&lt;/a&gt;&amp;lt;T&amp;gt;&lt;/span&gt;"}</script>
\ No newline at end of file
diff --git a/tests/rustdoc/generic-associated-types/gats.rs b/tests/rustdoc/generic-associated-types/gats.rs
index bcead3115fe..7ab82bb5829 100644
--- a/tests/rustdoc/generic-associated-types/gats.rs
+++ b/tests/rustdoc/generic-associated-types/gats.rs
@@ -2,7 +2,7 @@
 
 // @has foo/trait.LendingIterator.html
 pub trait LendingIterator {
-    // @has - '//*[@id="associatedtype.Item"]//h4[@class="code-header"]' "type Item<'a>where Self: 'a"
+    // @has - '//*[@id="associatedtype.Item"]//h4[@class="code-header"]' "type Item<'a> where Self: 'a"
     type Item<'a> where Self: 'a;
 
     // @has - '//*[@id="tymethod.next"]//h4[@class="code-header"]' \
@@ -23,7 +23,7 @@ impl LendingIterator for () {
 pub struct Infinite<T>(T);
 
 // @has foo/trait.LendingIterator.html
-// @has - '//*[@id="associatedtype.Item-2"]//h4[@class="code-header"]' "type Item<'a>where Self: 'a = &'a T"
+// @has - '//*[@id="associatedtype.Item-2"]//h4[@class="code-header"]' "type Item<'a> where Self: 'a = &'a T"
 impl<T> LendingIterator for Infinite<T> {
     type Item<'a> where Self: 'a = &'a T;
 
diff --git a/tests/rustdoc/inline-default-methods.rs b/tests/rustdoc/inline-default-methods.rs
index e6468316f58..7706cb139ac 100644
--- a/tests/rustdoc/inline-default-methods.rs
+++ b/tests/rustdoc/inline-default-methods.rs
@@ -4,6 +4,18 @@
 extern crate inline_default_methods;
 
 // @has inline_default_methods/trait.Foo.html
-// @has - '//pre[@class="rust item-decl"]' 'fn bar(&self);'
-// @has - '//pre[@class="rust item-decl"]' 'fn foo(&mut self) { ... }'
+// @has - '//pre[@class="rust item-decl"]' '// Required method fn bar(&self);'
+// @has - '//pre[@class="rust item-decl"]' '// Provided method fn foo(&mut self)'
 pub use inline_default_methods::Foo;
+
+// @has inline_default_methods/trait.Bar.html
+// @has - '//pre[@class="rust item-decl"]' '// Required method fn bar(&self);'
+// @has - '//pre[@class="rust item-decl"]' '// Provided methods fn foo1(&mut self)'
+// @has - '//pre[@class="rust item-decl"]' 'fn foo2(&mut self)'
+pub use inline_default_methods::Bar;
+
+// @has inline_default_methods/trait.Baz.html
+// @has - '//pre[@class="rust item-decl"]' '// Required methods fn bar1(&self);'
+// @has - '//pre[@class="rust item-decl"]' 'fn bar2(&self);'
+// @has - '//pre[@class="rust item-decl"]' '// Provided method fn foo(&mut self)'
+pub use inline_default_methods::Baz;
diff --git a/tests/rustdoc/inline_cross/impl_trait.rs b/tests/rustdoc/inline_cross/impl_trait.rs
index 7d810ab4813..b6a1552bc00 100644
--- a/tests/rustdoc/inline_cross/impl_trait.rs
+++ b/tests/rustdoc/inline_cross/impl_trait.rs
@@ -11,7 +11,7 @@ pub use impl_trait_aux::func;
 // @has impl_trait/fn.func2.html
 // @has - '//pre[@class="rust item-decl"]' "func2<T>("
 // @has - '//pre[@class="rust item-decl"]' "_x: impl Deref<Target = Option<T>> + Iterator<Item = T>,"
-// @has - '//pre[@class="rust item-decl"]' "_y: impl Iterator<Item = u8>)"
+// @has - '//pre[@class="rust item-decl"]' "_y: impl Iterator<Item = u8> )"
 // @!has - '//pre[@class="rust item-decl"]' 'where'
 pub use impl_trait_aux::func2;
 
diff --git a/tests/rustdoc/issue-34928.rs b/tests/rustdoc/issue-34928.rs
index 91b67757453..4184086f622 100644
--- a/tests/rustdoc/issue-34928.rs
+++ b/tests/rustdoc/issue-34928.rs
@@ -2,5 +2,5 @@
 
 pub trait Bar {}
 
-// @has foo/struct.Foo.html '//pre' 'pub struct Foo<T>(pub T)where T: Bar;'
+// @has foo/struct.Foo.html '//pre' 'pub struct Foo<T>(pub T) where T: Bar;'
 pub struct Foo<T>(pub T) where T: Bar;
diff --git a/tests/rustdoc/issue-85454.rs b/tests/rustdoc/issue-85454.rs
index 2d410a5974a..5a49a9d0651 100644
--- a/tests/rustdoc/issue-85454.rs
+++ b/tests/rustdoc/issue-85454.rs
@@ -5,7 +5,7 @@
 extern crate issue_85454;
 
 // @has foo/trait.FromResidual.html
-// @has - '//pre[@class="rust item-decl"]' 'pub trait FromResidual<R = <Self as Try>::Residual> { fn from_residual(residual: R) -> Self; }'
+// @has - '//pre[@class="rust item-decl"]' 'pub trait FromResidual<R = <Self as Try>::Residual> { // Required method fn from_residual(residual: R) -> Self; }'
 pub trait FromResidual<R = <Self as Try>::Residual> {
     fn from_residual(residual: R) -> Self;
 }
@@ -24,6 +24,6 @@ pub enum ControlFlow<B, C = ()> {
 
 pub mod reexport {
     // @has foo/reexport/trait.FromResidual.html
-    // @has - '//pre[@class="rust item-decl"]' 'pub trait FromResidual<R = <Self as Try>::Residual> { fn from_residual(residual: R) -> Self; }'
+    // @has - '//pre[@class="rust item-decl"]' 'pub trait FromResidual<R = <Self as Try>::Residual> { // Required method fn from_residual(residual: R) -> Self; }'
     pub use issue_85454::*;
 }
diff --git a/tests/rustdoc/reexports-priv.rs b/tests/rustdoc/reexports-priv.rs
index 84ea4ad2c9e..571d7f06fdc 100644
--- a/tests/rustdoc/reexports-priv.rs
+++ b/tests/rustdoc/reexports-priv.rs
@@ -98,7 +98,7 @@ pub mod outer {
         pub use reexports::foo;
         // @has 'foo/outer/inner/fn.foo_crate.html' '//pre[@class="rust item-decl"]' 'pub(crate) fn foo_crate()'
         pub(crate) use reexports::foo_crate;
-        // @has 'foo/outer/inner/fn.foo_super.html' '//pre[@class="rust item-decl"]' 'pub(in outer) fn foo_super()'
+        // @has 'foo/outer/inner/fn.foo_super.html' '//pre[@class="rust item-decl"]' 'pub(in outer) fn foo_super( )'
         pub(super) use::reexports::foo_super;
         // @!has 'foo/outer/inner/fn.foo_self.html'
         pub(self) use reexports::foo_self;
diff --git a/tests/rustdoc/where.SWhere_Simd_item-decl.html b/tests/rustdoc/where.SWhere_Simd_item-decl.html
index 6f151f2328e..ef4294c8f76 100644
--- a/tests/rustdoc/where.SWhere_Simd_item-decl.html
+++ b/tests/rustdoc/where.SWhere_Simd_item-decl.html
@@ -1 +1,3 @@
-<pre class="rust item-decl"><code>pub struct Simd&lt;T&gt;(_)<br /><span class="where">where<br />&#160;&#160;&#160;&#160;T: <a class="trait" href="trait.MyTrait.html" title="trait foo::MyTrait">MyTrait</a></span>;</code></pre>
\ No newline at end of file
+<pre class="rust item-decl"><code>pub struct Simd&lt;T&gt;(_)
+<span class="where">where
+         T: <a class="trait" href="trait.MyTrait.html" title="trait foo::MyTrait">MyTrait</a></span>;</code></pre>
\ No newline at end of file
diff --git a/tests/rustdoc/where.SWhere_TraitWhere_item-decl.html b/tests/rustdoc/where.SWhere_TraitWhere_item-decl.html
index 11df902f372..e8ab061e679 100644
--- a/tests/rustdoc/where.SWhere_TraitWhere_item-decl.html
+++ b/tests/rustdoc/where.SWhere_TraitWhere_item-decl.html
@@ -1,8 +1,13 @@
 <pre class="rust item-decl"><code>pub trait TraitWhere {
-    type <a href="#associatedtype.Item" class="associatedtype">Item</a>&lt;'a&gt;<br />&#160;&#160;&#160;&#160;<span class="where">where<br />&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;Self: 'a</span>;
+    type <a href="#associatedtype.Item" class="associatedtype">Item</a>&lt;'a&gt;
+       <span class="where">where Self: 'a</span>;
 
-    fn <a href="#method.func" class="fn">func</a>(self)<br />&#160;&#160;&#160;&#160;<span class="where">where<br />&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;Self: <a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a></span>,
-    { ... }
-<span class="item-spacer" />    fn <a href="#method.lines" class="fn">lines</a>(self) -&gt; <a class="struct" href="{{channel}}/std/io/struct.Lines.html" title="struct std::io::Lines">Lines</a>&lt;Self&gt;<br />&#160;&#160;&#160;&#160;<span class="where">where<br />&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;Self: <a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a></span>,
-    { ... }
+    // Provided methods
+    fn <a href="#method.func" class="fn">func</a>(self)
+       <span class="where">where Self: <a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a></span> { ... }
+<span class="item-spacer" />    fn <a href="#method.lines" class="fn">lines</a>(self) -&gt; <a class="struct" href="{{channel}}/std/io/struct.Lines.html" title="struct std::io::Lines">Lines</a>&lt;Self&gt;
+       <span class="where">where Self: <a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a></span> { ... }
+<span class="item-spacer" />    fn <a href="#method.merge" class="fn">merge</a>&lt;T&gt;(self, a: T)
+       <span class="where">where Self: <a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,
+             T: <a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a></span> { ... }
 }</code></pre>
\ No newline at end of file
diff --git a/tests/rustdoc/where.rs b/tests/rustdoc/where.rs
index 4c34c7e51d9..8b8a126e89d 100644
--- a/tests/rustdoc/where.rs
+++ b/tests/rustdoc/where.rs
@@ -4,7 +4,7 @@ use std::io::Lines;
 
 pub trait MyTrait { fn dummy(&self) { } }
 
-// @has foo/struct.Alpha.html '//pre' "pub struct Alpha<A>(_)where A: MyTrait"
+// @has foo/struct.Alpha.html '//pre' "pub struct Alpha<A>(_) where A: MyTrait"
 pub struct Alpha<A>(A) where A: MyTrait;
 // @has foo/trait.Bravo.html '//pre' "pub trait Bravo<B>where B: MyTrait"
 pub trait Bravo<B> where B: MyTrait { fn get(&self, B: B); }
@@ -41,6 +41,12 @@ pub trait TraitWhere {
     where
         Self: Sized,
     { todo!() }
+
+    fn merge<T>(self, a: T)
+    where
+        Self: Sized,
+        T: Sized,
+    { todo!() }
 }
 
 // @has foo/struct.Echo.html '//*[@class="impl"]//h3[@class="code-header"]' \
diff --git a/tests/rustdoc/whitespace-after-where-clause.enum.html b/tests/rustdoc/whitespace-after-where-clause.enum.html
index 904d4611036..20b60b68e88 100644
--- a/tests/rustdoc/whitespace-after-where-clause.enum.html
+++ b/tests/rustdoc/whitespace-after-where-clause.enum.html
@@ -1,4 +1,5 @@
-<pre class="rust item-decl"><code>pub enum Cow&lt;'a, B&gt;<span class="where fmt-newline">where<br />&#160;&#160;&#160;&#160;B: <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a>&lt;dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>&gt; + ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a,</span>{
+<pre class="rust item-decl"><code>pub enum Cow&lt;'a, B&gt;<span class="where fmt-newline">where
+    B: <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a>&lt;dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>&gt; + ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a,</span>{
     Borrowed(<a class="primitive" href="{{channel}}/std/primitive.reference.html">&amp;'a B</a>),
     Whatever(<a class="primitive" href="{{channel}}/std/primitive.u32.html">u32</a>),
 }</code></pre>
\ No newline at end of file
diff --git a/tests/rustdoc/whitespace-after-where-clause.enum2.html b/tests/rustdoc/whitespace-after-where-clause.enum2.html
index 7bc9b780197..065ce757de1 100644
--- a/tests/rustdoc/whitespace-after-where-clause.enum2.html
+++ b/tests/rustdoc/whitespace-after-where-clause.enum2.html
@@ -1,4 +1,4 @@
-<pre class="rust item-decl"><code>pub enum Cow2&lt;'a, B:&#160;?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a>&lt;dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>&gt; + 'a&gt; {
+<pre class="rust item-decl"><code>pub enum Cow2&lt;'a, B: ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a>&lt;dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>&gt; + 'a&gt; {
     Borrowed(<a class="primitive" href="{{channel}}/std/primitive.reference.html">&amp;'a B</a>),
     Whatever(<a class="primitive" href="{{channel}}/std/primitive.u32.html">u32</a>),
 }</code></pre>
\ No newline at end of file
diff --git a/tests/rustdoc/whitespace-after-where-clause.struct.html b/tests/rustdoc/whitespace-after-where-clause.struct.html
index 54faee9e405..948ddc499da 100644
--- a/tests/rustdoc/whitespace-after-where-clause.struct.html
+++ b/tests/rustdoc/whitespace-after-where-clause.struct.html
@@ -1,4 +1,5 @@
-<pre class="rust item-decl"><code>pub struct Struct&lt;'a, B&gt;<span class="where fmt-newline">where<br />&#160;&#160;&#160;&#160;B: <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a>&lt;dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>&gt; + ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a,</span>{
+<pre class="rust item-decl"><code>pub struct Struct&lt;'a, B&gt;<span class="where fmt-newline">where
+    B: <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a>&lt;dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>&gt; + ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a,</span>{
     pub a: <a class="primitive" href="{{channel}}/std/primitive.reference.html">&amp;'a B</a>,
     pub b: <a class="primitive" href="{{channel}}/std/primitive.u32.html">u32</a>,
 }</code></pre>
\ No newline at end of file
diff --git a/tests/rustdoc/whitespace-after-where-clause.struct2.html b/tests/rustdoc/whitespace-after-where-clause.struct2.html
index d872d516c09..c647e8d7121 100644
--- a/tests/rustdoc/whitespace-after-where-clause.struct2.html
+++ b/tests/rustdoc/whitespace-after-where-clause.struct2.html
@@ -1,4 +1,4 @@
-<pre class="rust item-decl"><code>pub struct Struct2&lt;'a, B:&#160;?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a>&lt;dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>&gt; + 'a&gt; {
+<pre class="rust item-decl"><code>pub struct Struct2&lt;'a, B: ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a>&lt;dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>&gt; + 'a&gt; {
     pub a: <a class="primitive" href="{{channel}}/std/primitive.reference.html">&amp;'a B</a>,
     pub b: <a class="primitive" href="{{channel}}/std/primitive.u32.html">u32</a>,
 }</code></pre>
\ No newline at end of file
diff --git a/tests/rustdoc/whitespace-after-where-clause.trait.html b/tests/rustdoc/whitespace-after-where-clause.trait.html
index bc3653de52d..0928b48e6b6 100644
--- a/tests/rustdoc/whitespace-after-where-clause.trait.html
+++ b/tests/rustdoc/whitespace-after-where-clause.trait.html
@@ -1,6 +1,8 @@
-<pre class="rust item-decl"><code>pub trait ToOwned&lt;T&gt;<span class="where fmt-newline">where<br />&#160;&#160;&#160;&#160;T: <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</span>{
+<pre class="rust item-decl"><code>pub trait ToOwned&lt;T&gt;<span class="where fmt-newline">where
+    T: <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</span>{
     type <a href="#associatedtype.Owned" class="associatedtype">Owned</a>;
 
+    // Required methods
     fn <a href="#tymethod.to_owned" class="fn">to_owned</a>(&amp;self) -&gt; Self::<a class="associatedtype" href="trait.ToOwned.html#associatedtype.Owned" title="type foo::ToOwned::Owned">Owned</a>;
 <span class="item-spacer" />    fn <a href="#tymethod.whatever" class="fn">whatever</a>(&amp;self) -&gt; T;
 }</code></pre>
\ No newline at end of file
diff --git a/tests/rustdoc/whitespace-after-where-clause.trait2.html b/tests/rustdoc/whitespace-after-where-clause.trait2.html
index eda4ca72acc..e6fafde1eff 100644
--- a/tests/rustdoc/whitespace-after-where-clause.trait2.html
+++ b/tests/rustdoc/whitespace-after-where-clause.trait2.html
@@ -1,6 +1,7 @@
 <pre class="rust item-decl"><code>pub trait ToOwned2&lt;T:&#160;<a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>&gt; {
     type <a href="#associatedtype.Owned" class="associatedtype">Owned</a>;
 
+    // Required methods
     fn <a href="#tymethod.to_owned" class="fn">to_owned</a>(&amp;self) -&gt; Self::<a class="associatedtype" href="trait.ToOwned2.html#associatedtype.Owned" title="type foo::ToOwned2::Owned">Owned</a>;
 <span class="item-spacer" />    fn <a href="#tymethod.whatever" class="fn">whatever</a>(&amp;self) -&gt; T;
 }</code></pre>
\ No newline at end of file
diff --git a/tests/rustdoc/whitespace-after-where-clause.union.html b/tests/rustdoc/whitespace-after-where-clause.union.html
index 03a26280ba2..38b6cb8b5c6 100644
--- a/tests/rustdoc/whitespace-after-where-clause.union.html
+++ b/tests/rustdoc/whitespace-after-where-clause.union.html
@@ -1,3 +1,4 @@
-<pre class="rust item-decl"><code>pub union Union&lt;'a, B&gt;<span class="where fmt-newline">where<br />&#160;&#160;&#160;&#160;B: <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a>&lt;dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>&gt; + ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a,</span>{
+<pre class="rust item-decl"><code>pub union Union&lt;'a, B&gt;<span class="where fmt-newline">where
+    B: <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a>&lt;dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>&gt; + ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a,</span>{
     /* private fields */
 }</code></pre>
\ No newline at end of file
diff --git a/tests/rustdoc/whitespace-after-where-clause.union2.html b/tests/rustdoc/whitespace-after-where-clause.union2.html
index fc78e9b6039..66ad30c9200 100644
--- a/tests/rustdoc/whitespace-after-where-clause.union2.html
+++ b/tests/rustdoc/whitespace-after-where-clause.union2.html
@@ -1,3 +1,3 @@
-<pre class="rust item-decl"><code>pub union Union2&lt;'a, B:&#160;?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a>&lt;dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>&gt; + 'a&gt; {
+<pre class="rust item-decl"><code>pub union Union2&lt;'a, B: ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a>&lt;dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>&gt; + 'a&gt; {
     /* private fields */
 }</code></pre>
\ No newline at end of file
diff --git a/tests/ui/associated-types/hr-associated-type-projection-1.stderr b/tests/ui/associated-types/hr-associated-type-projection-1.stderr
index a65f84ae58e..2281d9419b4 100644
--- a/tests/ui/associated-types/hr-associated-type-projection-1.stderr
+++ b/tests/ui/associated-types/hr-associated-type-projection-1.stderr
@@ -16,8 +16,8 @@ LL |     for<'b> <Self as UnsafeCopy<'b, T>>::Item: std::ops::Deref<Target = T>,
    |                                                                ^^^^^^^^^^ required by this bound in `UnsafeCopy`
 help: consider further restricting this bound
    |
-LL | impl<T: Copy + std::ops::Deref + Deref<Target = T>> UnsafeCopy<'_, T> for T {
-   |                                +++++++++++++++++++
+LL | impl<T: Copy + std::ops::Deref<Target = T>> UnsafeCopy<'_, T> for T {
+   |                               ++++++++++++
 
 error: aborting due to previous error
 
diff --git a/tests/ui/async-await/future-sizes/async-awaiting-fut.rs b/tests/ui/async-await/future-sizes/async-awaiting-fut.rs
new file mode 100644
index 00000000000..1816d842d6c
--- /dev/null
+++ b/tests/ui/async-await/future-sizes/async-awaiting-fut.rs
@@ -0,0 +1,24 @@
+// compile-flags: -Z print-type-sizes --crate-type lib
+// edition:2021
+// build-pass
+// ignore-pass
+
+async fn wait() {}
+
+async fn big_fut(arg: [u8; 1024]) {}
+
+async fn calls_fut(fut: impl std::future::Future<Output = ()>) {
+    loop {
+        wait().await;
+        if true {
+            return fut.await;
+        } else {
+            wait().await;
+        }
+    }
+}
+
+pub async fn test() {
+    let fut = big_fut([0u8; 1024]);
+    calls_fut(fut).await;
+}
diff --git a/tests/ui/async-await/future-sizes/async-awaiting-fut.stdout b/tests/ui/async-await/future-sizes/async-awaiting-fut.stdout
new file mode 100644
index 00000000000..eaf3e4b61e3
--- /dev/null
+++ b/tests/ui/async-await/future-sizes/async-awaiting-fut.stdout
@@ -0,0 +1,72 @@
+print-type-size type: `[async fn body@$DIR/async-awaiting-fut.rs:21:21: 24:2]`: 3078 bytes, alignment: 1 bytes
+print-type-size     discriminant: 1 bytes
+print-type-size     variant `Unresumed`: 0 bytes
+print-type-size     variant `Suspend0`: 3077 bytes
+print-type-size         local `.__awaitee`: 3077 bytes, offset: 0 bytes, alignment: 1 bytes
+print-type-size     variant `Returned`: 0 bytes
+print-type-size     variant `Panicked`: 0 bytes
+print-type-size type: `[async fn body@$DIR/async-awaiting-fut.rs:10:64: 19:2]`: 3077 bytes, alignment: 1 bytes
+print-type-size     discriminant: 1 bytes
+print-type-size     variant `Unresumed`: 2051 bytes
+print-type-size         padding: 1026 bytes
+print-type-size         upvar `.fut`: 1025 bytes, alignment: 1 bytes
+print-type-size     variant `Suspend0`: 2052 bytes
+print-type-size         local `.fut`: 1025 bytes, offset: 0 bytes, alignment: 1 bytes
+print-type-size         local `..generator_field4`: 1 bytes
+print-type-size         padding: 1 bytes
+print-type-size         upvar `.fut`: 1025 bytes, alignment: 1 bytes
+print-type-size         local `.__awaitee`: 1 bytes
+print-type-size     variant `Suspend1`: 3076 bytes
+print-type-size         padding: 1024 bytes
+print-type-size         local `..generator_field4`: 1 bytes, alignment: 1 bytes
+print-type-size         padding: 1 bytes
+print-type-size         upvar `.fut`: 1025 bytes, alignment: 1 bytes
+print-type-size         local `.__awaitee`: 1025 bytes
+print-type-size     variant `Suspend2`: 2052 bytes
+print-type-size         local `.fut`: 1025 bytes, offset: 0 bytes, alignment: 1 bytes
+print-type-size         local `..generator_field4`: 1 bytes
+print-type-size         padding: 1 bytes
+print-type-size         upvar `.fut`: 1025 bytes, alignment: 1 bytes
+print-type-size         local `.__awaitee`: 1 bytes
+print-type-size     variant `Returned`: 2051 bytes
+print-type-size         padding: 1026 bytes
+print-type-size         upvar `.fut`: 1025 bytes, alignment: 1 bytes
+print-type-size     variant `Panicked`: 2051 bytes
+print-type-size         padding: 1026 bytes
+print-type-size         upvar `.fut`: 1025 bytes, alignment: 1 bytes
+print-type-size type: `std::mem::ManuallyDrop<[async fn body@$DIR/async-awaiting-fut.rs:10:64: 19:2]>`: 3077 bytes, alignment: 1 bytes
+print-type-size     field `.value`: 3077 bytes
+print-type-size type: `std::mem::MaybeUninit<[async fn body@$DIR/async-awaiting-fut.rs:10:64: 19:2]>`: 3077 bytes, alignment: 1 bytes
+print-type-size     variant `MaybeUninit`: 3077 bytes
+print-type-size         field `.uninit`: 0 bytes
+print-type-size         field `.value`: 3077 bytes
+print-type-size type: `[async fn body@$DIR/async-awaiting-fut.rs:8:35: 8:37]`: 1025 bytes, alignment: 1 bytes
+print-type-size     discriminant: 1 bytes
+print-type-size     variant `Unresumed`: 1024 bytes
+print-type-size         upvar `.arg`: 1024 bytes, offset: 0 bytes, alignment: 1 bytes
+print-type-size     variant `Returned`: 1024 bytes
+print-type-size         upvar `.arg`: 1024 bytes, offset: 0 bytes, alignment: 1 bytes
+print-type-size     variant `Panicked`: 1024 bytes
+print-type-size         upvar `.arg`: 1024 bytes, offset: 0 bytes, alignment: 1 bytes
+print-type-size type: `std::mem::ManuallyDrop<[async fn body@$DIR/async-awaiting-fut.rs:8:35: 8:37]>`: 1025 bytes, alignment: 1 bytes
+print-type-size     field `.value`: 1025 bytes
+print-type-size type: `std::mem::MaybeUninit<[async fn body@$DIR/async-awaiting-fut.rs:8:35: 8:37]>`: 1025 bytes, alignment: 1 bytes
+print-type-size     variant `MaybeUninit`: 1025 bytes
+print-type-size         field `.uninit`: 0 bytes
+print-type-size         field `.value`: 1025 bytes
+print-type-size type: `[async fn body@$DIR/async-awaiting-fut.rs:6:17: 6:19]`: 1 bytes, alignment: 1 bytes
+print-type-size     discriminant: 1 bytes
+print-type-size     variant `Unresumed`: 0 bytes
+print-type-size     variant `Returned`: 0 bytes
+print-type-size     variant `Panicked`: 0 bytes
+print-type-size type: `std::mem::ManuallyDrop<bool>`: 1 bytes, alignment: 1 bytes
+print-type-size     field `.value`: 1 bytes
+print-type-size type: `std::mem::MaybeUninit<bool>`: 1 bytes, alignment: 1 bytes
+print-type-size     variant `MaybeUninit`: 1 bytes
+print-type-size         field `.uninit`: 0 bytes
+print-type-size         field `.value`: 1 bytes
+print-type-size type: `std::task::Poll<()>`: 1 bytes, alignment: 1 bytes
+print-type-size     discriminant: 1 bytes
+print-type-size     variant `Ready`: 0 bytes
+print-type-size         field `.0`: 0 bytes
+print-type-size     variant `Pending`: 0 bytes
diff --git a/tests/ui/async-await/future-sizes/large-arg.stdout b/tests/ui/async-await/future-sizes/large-arg.stdout
index c206d793170..91db4b1531f 100644
--- a/tests/ui/async-await/future-sizes/large-arg.stdout
+++ b/tests/ui/async-await/future-sizes/large-arg.stdout
@@ -1,17 +1,17 @@
 print-type-size type: `[async fn body@$DIR/large-arg.rs:6:21: 8:2]`: 3076 bytes, alignment: 1 bytes
 print-type-size     discriminant: 1 bytes
+print-type-size     variant `Unresumed`: 0 bytes
 print-type-size     variant `Suspend0`: 3075 bytes
 print-type-size         local `.__awaitee`: 3075 bytes, offset: 0 bytes, alignment: 1 bytes
-print-type-size     variant `Unresumed`: 0 bytes
 print-type-size     variant `Returned`: 0 bytes
 print-type-size     variant `Panicked`: 0 bytes
 print-type-size type: `[async fn body@$DIR/large-arg.rs:10:30: 12:2]`: 3075 bytes, alignment: 1 bytes
 print-type-size     discriminant: 1 bytes
+print-type-size     variant `Unresumed`: 1024 bytes
+print-type-size         upvar `.t`: 1024 bytes, offset: 0 bytes, alignment: 1 bytes
 print-type-size     variant `Suspend0`: 3074 bytes
 print-type-size         upvar `.t`: 1024 bytes, offset: 0 bytes, alignment: 1 bytes
 print-type-size         local `.__awaitee`: 2050 bytes
-print-type-size     variant `Unresumed`: 1024 bytes
-print-type-size         upvar `.t`: 1024 bytes, offset: 0 bytes, alignment: 1 bytes
 print-type-size     variant `Returned`: 1024 bytes
 print-type-size         upvar `.t`: 1024 bytes, offset: 0 bytes, alignment: 1 bytes
 print-type-size     variant `Panicked`: 1024 bytes
@@ -24,11 +24,11 @@ print-type-size         field `.uninit`: 0 bytes
 print-type-size         field `.value`: 3075 bytes
 print-type-size type: `[async fn body@$DIR/large-arg.rs:13:26: 15:2]`: 2050 bytes, alignment: 1 bytes
 print-type-size     discriminant: 1 bytes
+print-type-size     variant `Unresumed`: 1024 bytes
+print-type-size         upvar `.t`: 1024 bytes, offset: 0 bytes, alignment: 1 bytes
 print-type-size     variant `Suspend0`: 2049 bytes
 print-type-size         upvar `.t`: 1024 bytes, offset: 0 bytes, alignment: 1 bytes
 print-type-size         local `.__awaitee`: 1025 bytes
-print-type-size     variant `Unresumed`: 1024 bytes
-print-type-size         upvar `.t`: 1024 bytes, offset: 0 bytes, alignment: 1 bytes
 print-type-size     variant `Returned`: 1024 bytes
 print-type-size         upvar `.t`: 1024 bytes, offset: 0 bytes, alignment: 1 bytes
 print-type-size     variant `Panicked`: 1024 bytes
diff --git a/tests/ui/attributes/log-backtrace.rs b/tests/ui/attributes/log-backtrace.rs
index 3979d2001fc..e42edf1d4af 100644
--- a/tests/ui/attributes/log-backtrace.rs
+++ b/tests/ui/attributes/log-backtrace.rs
@@ -1,9 +1,9 @@
 // run-pass
 //
-// This test makes sure that log-backtrace option doesn't give a compilation error.
+// This test makes sure that log-backtrace option at least parses correctly
 //
 // dont-check-compiler-stdout
 // dont-check-compiler-stderr
 // rustc-env:RUSTC_LOG=info
-// compile-flags: -Zlog-backtrace=rustc_metadata::creader
+// rustc-env:RUSTC_LOG_BACKTRACE=rustc_metadata::creader
 fn main() {}
diff --git a/tests/ui/borrowck/borrowck-borrow-mut-base-ptr-in-aliasable-loc.stderr b/tests/ui/borrowck/borrowck-borrow-mut-base-ptr-in-aliasable-loc.stderr
index ce9f7aa050a..dd0817ff233 100644
--- a/tests/ui/borrowck/borrowck-borrow-mut-base-ptr-in-aliasable-loc.stderr
+++ b/tests/ui/borrowck/borrowck-borrow-mut-base-ptr-in-aliasable-loc.stderr
@@ -1,11 +1,13 @@
 error[E0594]: cannot assign to `**t1`, which is behind a `&` reference
   --> $DIR/borrowck-borrow-mut-base-ptr-in-aliasable-loc.rs:9:5
    |
-LL |     let t1 = t0;
-   |         -- consider changing this binding's type to be: `&mut &mut isize`
-LL |     let p: &isize = &**t0;
 LL |     **t1 = 22;
    |     ^^^^^^^^^ `t1` is a `&` reference, so the data it refers to cannot be written
+   |
+help: consider specifying this binding's type
+   |
+LL |     let t1: &mut &mut isize = t0;
+   |           +++++++++++++++++
 
 error[E0502]: cannot borrow `**t0` as immutable because it is also borrowed as mutable
   --> $DIR/borrowck-borrow-mut-base-ptr-in-aliasable-loc.rs:14:21
diff --git a/tests/ui/borrowck/issue-85765.rs b/tests/ui/borrowck/issue-85765.rs
index 1598cd5d3c8..76e0b517354 100644
--- a/tests/ui/borrowck/issue-85765.rs
+++ b/tests/ui/borrowck/issue-85765.rs
@@ -1,7 +1,7 @@
 fn main() {
     let mut test = Vec::new();
     let rofl: &Vec<Vec<i32>> = &mut test;
-    //~^ NOTE consider changing this binding's type to be
+    //~^ HELP consider changing this binding's type
     rofl.push(Vec::new());
     //~^ ERROR cannot borrow `*rofl` as mutable, as it is behind a `&` reference
     //~| NOTE `rofl` is a `&` reference, so the data it refers to cannot be borrowed as mutable
@@ -15,14 +15,14 @@ fn main() {
 
     #[rustfmt::skip]
     let x: &usize = &mut{0};
-    //~^ NOTE consider changing this binding's type to be
+    //~^ HELP consider changing this binding's type
     *x = 1;
     //~^ ERROR cannot assign to `*x`, which is behind a `&` reference
     //~| NOTE `x` is a `&` reference, so the data it refers to cannot be written
 
     #[rustfmt::skip]
     let y: &usize = &mut(0);
-    //~^ NOTE consider changing this binding's type to be
+    //~^ HELP consider changing this binding's type
     *y = 1;
     //~^ ERROR cannot assign to `*y`, which is behind a `&` reference
     //~| NOTE `y` is a `&` reference, so the data it refers to cannot be written
diff --git a/tests/ui/borrowck/issue-85765.stderr b/tests/ui/borrowck/issue-85765.stderr
index 7da7dba68ab..b4bb128cbb4 100644
--- a/tests/ui/borrowck/issue-85765.stderr
+++ b/tests/ui/borrowck/issue-85765.stderr
@@ -1,11 +1,13 @@
 error[E0596]: cannot borrow `*rofl` as mutable, as it is behind a `&` reference
   --> $DIR/issue-85765.rs:5:5
    |
-LL |     let rofl: &Vec<Vec<i32>> = &mut test;
-   |         ---- consider changing this binding's type to be: `&mut Vec<Vec<i32>>`
-LL |
 LL |     rofl.push(Vec::new());
    |     ^^^^^^^^^^^^^^^^^^^^^ `rofl` is a `&` reference, so the data it refers to cannot be borrowed as mutable
+   |
+help: consider changing this binding's type
+   |
+LL |     let rofl: &mut Vec<Vec<i32>> = &mut test;
+   |               ~~~~~~~~~~~~~~~~~~
 
 error[E0594]: cannot assign to `*r`, which is behind a `&` reference
   --> $DIR/issue-85765.rs:12:5
@@ -21,20 +23,24 @@ LL |     let r = &mut mutvar;
 error[E0594]: cannot assign to `*x`, which is behind a `&` reference
   --> $DIR/issue-85765.rs:19:5
    |
-LL |     let x: &usize = &mut{0};
-   |         - consider changing this binding's type to be: `&mut usize`
-LL |
 LL |     *x = 1;
    |     ^^^^^^ `x` is a `&` reference, so the data it refers to cannot be written
+   |
+help: consider changing this binding's type
+   |
+LL |     let x: &mut usize = &mut{0};
+   |            ~~~~~~~~~~
 
 error[E0594]: cannot assign to `*y`, which is behind a `&` reference
   --> $DIR/issue-85765.rs:26:5
    |
-LL |     let y: &usize = &mut(0);
-   |         - consider changing this binding's type to be: `&mut usize`
-LL |
 LL |     *y = 1;
    |     ^^^^^^ `y` is a `&` reference, so the data it refers to cannot be written
+   |
+help: consider changing this binding's type
+   |
+LL |     let y: &mut usize = &mut(0);
+   |            ~~~~~~~~~~
 
 error: aborting due to 4 previous errors
 
diff --git a/tests/ui/borrowck/issue-91206.rs b/tests/ui/borrowck/issue-91206.rs
index 67407c1eae3..e062a253767 100644
--- a/tests/ui/borrowck/issue-91206.rs
+++ b/tests/ui/borrowck/issue-91206.rs
@@ -9,7 +9,7 @@ impl TestClient {
 fn main() {
     let client = TestClient;
     let inner = client.get_inner_ref();
-    //~^ NOTE consider changing this binding's type to be
+    //~^ HELP consider specifying this binding's type
     inner.clear();
     //~^ ERROR cannot borrow `*inner` as mutable, as it is behind a `&` reference [E0596]
     //~| NOTE `inner` is a `&` reference, so the data it refers to cannot be borrowed as mutable
diff --git a/tests/ui/borrowck/issue-91206.stderr b/tests/ui/borrowck/issue-91206.stderr
index 12d8d27c5f0..6653d497873 100644
--- a/tests/ui/borrowck/issue-91206.stderr
+++ b/tests/ui/borrowck/issue-91206.stderr
@@ -1,11 +1,13 @@
 error[E0596]: cannot borrow `*inner` as mutable, as it is behind a `&` reference
   --> $DIR/issue-91206.rs:13:5
    |
-LL |     let inner = client.get_inner_ref();
-   |         ----- consider changing this binding's type to be: `&mut Vec<usize>`
-LL |
 LL |     inner.clear();
    |     ^^^^^^^^^^^^^ `inner` is a `&` reference, so the data it refers to cannot be borrowed as mutable
+   |
+help: consider specifying this binding's type
+   |
+LL |     let inner: &mut Vec<usize> = client.get_inner_ref();
+   |              +++++++++++++++++
 
 error: aborting due to previous error
 
diff --git a/tests/ui/borrowck/issue-92015.stderr b/tests/ui/borrowck/issue-92015.stderr
index 62b1183e71b..ea4f9abb87d 100644
--- a/tests/ui/borrowck/issue-92015.stderr
+++ b/tests/ui/borrowck/issue-92015.stderr
@@ -1,10 +1,13 @@
 error[E0594]: cannot assign to `*foo`, which is behind a `&` reference
   --> $DIR/issue-92015.rs:6:5
    |
-LL |     let foo = Some(&0).unwrap();
-   |         --- consider changing this binding's type to be: `&mut i32`
 LL |     *foo = 1;
    |     ^^^^^^^^ `foo` is a `&` reference, so the data it refers to cannot be written
+   |
+help: consider specifying this binding's type
+   |
+LL |     let foo: &mut i32 = Some(&0).unwrap();
+   |            ++++++++++
 
 error: aborting due to previous error
 
diff --git a/tests/ui/const-generics/generic_const_exprs/const_kind_expr/relate_binop_arg_tys.rs b/tests/ui/const-generics/generic_const_exprs/const_kind_expr/relate_binop_arg_tys.rs
new file mode 100644
index 00000000000..fd52fc35541
--- /dev/null
+++ b/tests/ui/const-generics/generic_const_exprs/const_kind_expr/relate_binop_arg_tys.rs
@@ -0,0 +1,18 @@
+// checks that when we relate a `Expr::Binop` we also relate the types of the
+// const arguments.
+#![feature(generic_const_exprs)]
+#![allow(incomplete_features)]
+
+struct Bar<const B: bool>;
+
+const fn make_generic(_: usize, a: bool) -> bool {
+    a
+}
+
+fn foo<const N: usize>() -> Bar<{ make_generic(N, true == false) }> {
+    Bar::<{ make_generic(N, 1_u8 == 0_u8) }>
+    //~^ error: mismatched types
+    //~| error: unconstrained generic constant
+}
+
+fn main() {}
diff --git a/tests/ui/const-generics/generic_const_exprs/const_kind_expr/relate_binop_arg_tys.stderr b/tests/ui/const-generics/generic_const_exprs/const_kind_expr/relate_binop_arg_tys.stderr
new file mode 100644
index 00000000000..ba824e84a5a
--- /dev/null
+++ b/tests/ui/const-generics/generic_const_exprs/const_kind_expr/relate_binop_arg_tys.stderr
@@ -0,0 +1,20 @@
+error[E0308]: mismatched types
+  --> $DIR/relate_binop_arg_tys.rs:13:5
+   |
+LL |     Bar::<{ make_generic(N, 1_u8 == 0_u8) }>
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `{ make_generic(N, true == false) }`, found `{ make_generic(N, 1_u8 == 0_u8) }`
+   |
+   = note: expected constant `{ make_generic(N, true == false) }`
+              found constant `{ make_generic(N, 1_u8 == 0_u8) }`
+
+error: unconstrained generic constant
+  --> $DIR/relate_binop_arg_tys.rs:13:11
+   |
+LL |     Bar::<{ make_generic(N, 1_u8 == 0_u8) }>
+   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: try adding a `where` bound using this expression: `where [(); { make_generic(N, 1_u8 == 0_u8) }]:`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/const-generics/generic_const_exprs/const_kind_expr/relate_cast_arg_ty.rs b/tests/ui/const-generics/generic_const_exprs/const_kind_expr/relate_cast_arg_ty.rs
new file mode 100644
index 00000000000..bef9d4b9e99
--- /dev/null
+++ b/tests/ui/const-generics/generic_const_exprs/const_kind_expr/relate_cast_arg_ty.rs
@@ -0,0 +1,12 @@
+// checks that when we relate a `Expr::Cast` we also relate the type of the
+// const argument.
+#![feature(generic_const_exprs)]
+#![allow(incomplete_features)]
+
+fn foo<const N: usize>() -> [(); (true as usize) + N] {
+    [(); (1_u8 as usize) + N]
+    //~^ error: mismatched types
+    //~| error: unconstrained generic constant
+}
+
+fn main() {}
diff --git a/tests/ui/const-generics/generic_const_exprs/const_kind_expr/relate_cast_arg_ty.stderr b/tests/ui/const-generics/generic_const_exprs/const_kind_expr/relate_cast_arg_ty.stderr
new file mode 100644
index 00000000000..d3ba870a2d7
--- /dev/null
+++ b/tests/ui/const-generics/generic_const_exprs/const_kind_expr/relate_cast_arg_ty.stderr
@@ -0,0 +1,20 @@
+error[E0308]: mismatched types
+  --> $DIR/relate_cast_arg_ty.rs:7:5
+   |
+LL |     [(); (1_u8 as usize) + N]
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ expected `(true as usize) + N`, found `(1_u8 as usize) + N`
+   |
+   = note: expected constant `(true as usize) + N`
+              found constant `(1_u8 as usize) + N`
+
+error: unconstrained generic constant
+  --> $DIR/relate_cast_arg_ty.rs:7:10
+   |
+LL |     [(); (1_u8 as usize) + N]
+   |          ^^^^^^^^^^^^^^^^^^^
+   |
+   = help: try adding a `where` bound using this expression: `where [(); (1_u8 as usize) + N]:`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/consts/const-err-late.stderr b/tests/ui/consts/const-err-late.stderr
index c5c668189b9..cb0cab2444b 100644
--- a/tests/ui/consts/const-err-late.stderr
+++ b/tests/ui/consts/const-err-late.stderr
@@ -29,23 +29,11 @@ LL |     black_box((S::<i32>::FOO, S::<u32>::FOO));
    |                               ^^^^^^^^^^^^^
 
 note: erroneous constant used
-  --> $DIR/const-err-late.rs:19:31
-   |
-LL |     black_box((S::<i32>::FOO, S::<u32>::FOO));
-   |                               ^^^^^^^^^^^^^
-
-note: erroneous constant used
   --> $DIR/const-err-late.rs:19:16
    |
 LL |     black_box((S::<i32>::FOO, S::<u32>::FOO));
    |                ^^^^^^^^^^^^^
 
-note: erroneous constant used
-  --> $DIR/const-err-late.rs:19:31
-   |
-LL |     black_box((S::<i32>::FOO, S::<u32>::FOO));
-   |                               ^^^^^^^^^^^^^
-
 error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0080`.
diff --git a/tests/ui/consts/const-eval/const-eval-query-stack.rs b/tests/ui/consts/const-eval/const-eval-query-stack.rs
index 8f8a8cee3a0..81f28c1755d 100644
--- a/tests/ui/consts/const-eval/const-eval-query-stack.rs
+++ b/tests/ui/consts/const-eval/const-eval-query-stack.rs
@@ -1,8 +1,7 @@
 // compile-flags: -Ztreat-err-as-bug=1
 // failure-status: 101
 // rustc-env:RUST_BACKTRACE=1
-// normalize-stderr-test "\nerror: internal compiler error.*\n\n" -> ""
-// normalize-stderr-test "note:.*unexpectedly panicked.*\n\n" -> ""
+// normalize-stderr-test "\nerror: .*unexpectedly panicked.*\n\n" -> ""
 // normalize-stderr-test "note: we would appreciate a bug report.*\n\n" -> ""
 // normalize-stderr-test "note: compiler flags.*\n\n" -> ""
 // normalize-stderr-test "note: rustc.*running on.*\n\n" -> ""
diff --git a/tests/ui/consts/const-eval/const-eval-query-stack.stderr b/tests/ui/consts/const-eval/const-eval-query-stack.stderr
index b97975c4cd9..01fb8153cf3 100644
--- a/tests/ui/consts/const-eval/const-eval-query-stack.stderr
+++ b/tests/ui/consts/const-eval/const-eval-query-stack.stderr
@@ -1,5 +1,5 @@
 error[E0080]: evaluation of constant value failed
-  --> $DIR/const-eval-query-stack.rs:17:16
+  --> $DIR/const-eval-query-stack.rs:16:16
    |
 LL | const X: i32 = 1 / 0;
    |                ^^^^^ attempt to divide `1_i32` by zero
diff --git a/tests/ui/derives/deriving-copyclone.stderr b/tests/ui/derives/deriving-copyclone.stderr
index 9c4ca01ff37..c0c2215c04a 100644
--- a/tests/ui/derives/deriving-copyclone.stderr
+++ b/tests/ui/derives/deriving-copyclone.stderr
@@ -1,8 +1,8 @@
 error[E0277]: the trait bound `B<C>: Copy` is not satisfied
-  --> $DIR/deriving-copyclone.rs:31:13
+  --> $DIR/deriving-copyclone.rs:31:26
    |
 LL |     is_copy(B { a: 1, b: C });
-   |     ------- ^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `B<C>`
+   |     -------              ^ the trait `Copy` is not implemented for `B<C>`
    |     |
    |     required by a bound introduced by this call
    |
@@ -19,14 +19,14 @@ LL | fn is_copy<T: Copy>(_: T) {}
    = note: this error originates in the derive macro `Copy` (in Nightly builds, run with -Z macro-backtrace for more info)
 help: consider borrowing here
    |
-LL |     is_copy(&B { a: 1, b: C });
-   |             +
+LL |     is_copy(B { a: 1, b: &C });
+   |                          +
 
 error[E0277]: the trait bound `B<C>: Clone` is not satisfied
-  --> $DIR/deriving-copyclone.rs:32:14
+  --> $DIR/deriving-copyclone.rs:32:27
    |
 LL |     is_clone(B { a: 1, b: C });
-   |     -------- ^^^^^^^^^^^^^^^^ the trait `Clone` is not implemented for `B<C>`
+   |     --------              ^ the trait `Clone` is not implemented for `B<C>`
    |     |
    |     required by a bound introduced by this call
    |
@@ -43,14 +43,14 @@ LL | fn is_clone<T: Clone>(_: T) {}
    = note: this error originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
 help: consider borrowing here
    |
-LL |     is_clone(&B { a: 1, b: C });
-   |              +
+LL |     is_clone(B { a: 1, b: &C });
+   |                           +
 
 error[E0277]: the trait bound `B<D>: Copy` is not satisfied
-  --> $DIR/deriving-copyclone.rs:35:13
+  --> $DIR/deriving-copyclone.rs:35:26
    |
 LL |     is_copy(B { a: 1, b: D });
-   |     ------- ^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `B<D>`
+   |     -------              ^ the trait `Copy` is not implemented for `B<D>`
    |     |
    |     required by a bound introduced by this call
    |
@@ -67,8 +67,8 @@ LL | fn is_copy<T: Copy>(_: T) {}
    = note: this error originates in the derive macro `Copy` (in Nightly builds, run with -Z macro-backtrace for more info)
 help: consider borrowing here
    |
-LL |     is_copy(&B { a: 1, b: D });
-   |             +
+LL |     is_copy(B { a: 1, b: &D });
+   |                          +
 
 error: aborting due to 3 previous errors
 
diff --git a/tests/ui/derives/deriving-with-repr-packed.rs b/tests/ui/derives/deriving-with-repr-packed.rs
index afa91da133d..58be4519720 100644
--- a/tests/ui/derives/deriving-with-repr-packed.rs
+++ b/tests/ui/derives/deriving-with-repr-packed.rs
@@ -33,4 +33,14 @@ struct FlexZeroSlice {
     //~^^ this was previously accepted
 }
 
+// Again, currently allowed, but will be phased out.
+#[derive(Debug)]
+#[repr(packed)]
+struct WithStr {
+    width: u8,
+    data: str,
+    //~^ WARNING string slice in a packed struct that derives a built-in trait
+    //~^^ this was previously accepted
+}
+
 fn main() {}
diff --git a/tests/ui/derives/deriving-with-repr-packed.stderr b/tests/ui/derives/deriving-with-repr-packed.stderr
index 7ed84af91bd..0cfe03869af 100644
--- a/tests/ui/derives/deriving-with-repr-packed.stderr
+++ b/tests/ui/derives/deriving-with-repr-packed.stderr
@@ -13,6 +13,20 @@ LL |     data: [u8],
    = note: `#[warn(byte_slice_in_packed_struct_with_derive)]` on by default
    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
 
+warning: string slice in a packed struct that derives a built-in trait
+  --> $DIR/deriving-with-repr-packed.rs:41:5
+   |
+LL | #[derive(Debug)]
+   |          ----- in this derive macro expansion
+...
+LL |     data: str,
+   |     ^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #107457 <https://github.com/rust-lang/rust/issues/107457>
+   = help: consider implementing the trait by hand, or remove the `packed` attribute
+   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
+
 error[E0507]: cannot move out of `self` which is behind a shared reference
   --> $DIR/deriving-with-repr-packed.rs:22:10
    |
@@ -24,7 +38,7 @@ LL | struct X(Y);
    |
    = note: this error originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error: aborting due to previous error; 1 warning emitted
+error: aborting due to previous error; 2 warnings emitted
 
 For more information about this error, try `rustc --explain E0507`.
 Future incompatibility report: Future breakage diagnostic:
@@ -43,3 +57,19 @@ LL |     data: [u8],
    = note: `#[warn(byte_slice_in_packed_struct_with_derive)]` on by default
    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
 
+Future breakage diagnostic:
+warning: string slice in a packed struct that derives a built-in trait
+  --> $DIR/deriving-with-repr-packed.rs:41:5
+   |
+LL | #[derive(Debug)]
+   |          ----- in this derive macro expansion
+...
+LL |     data: str,
+   |     ^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #107457 <https://github.com/rust-lang/rust/issues/107457>
+   = help: consider implementing the trait by hand, or remove the `packed` attribute
+   = note: `#[warn(byte_slice_in_packed_struct_with_derive)]` on by default
+   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
+
diff --git a/tests/ui/dyn-star/align.over_aligned.stderr b/tests/ui/dyn-star/align.over_aligned.stderr
index 62e28efab58..0365d87a6f8 100644
--- a/tests/ui/dyn-star/align.over_aligned.stderr
+++ b/tests/ui/dyn-star/align.over_aligned.stderr
@@ -7,13 +7,13 @@ LL | #![feature(dyn_star)]
    = note: see issue #102425 <https://github.com/rust-lang/rust/issues/102425> for more information
    = note: `#[warn(incomplete_features)]` on by default
 
-error[E0277]: `AlignedUsize` needs to be a pointer-sized type
+error[E0277]: `AlignedUsize` needs to have the same alignment and size as a pointer
   --> $DIR/align.rs:15:13
    |
 LL |     let x = AlignedUsize(12) as dyn* Debug;
-   |             ^^^^^^^^^^^^^^^^ `AlignedUsize` needs to be a pointer-sized type
+   |             ^^^^^^^^^^^^^^^^ `AlignedUsize` needs to be a pointer-like type
    |
-   = help: the trait `PointerSized` is not implemented for `AlignedUsize`
+   = help: the trait `PointerLike` is not implemented for `AlignedUsize`
 
 error: aborting due to previous error; 1 warning emitted
 
diff --git a/tests/ui/dyn-star/align.rs b/tests/ui/dyn-star/align.rs
index fb41a05a066..6679997a940 100644
--- a/tests/ui/dyn-star/align.rs
+++ b/tests/ui/dyn-star/align.rs
@@ -13,5 +13,5 @@ struct AlignedUsize(usize);
 
 fn main() {
     let x = AlignedUsize(12) as dyn* Debug;
-    //[over_aligned]~^ ERROR `AlignedUsize` needs to be a pointer-sized type
+    //[over_aligned]~^ ERROR `AlignedUsize` needs to have the same alignment and size as a pointer
 }
diff --git a/tests/ui/dyn-star/check-size-at-cast-polymorphic-bad.rs b/tests/ui/dyn-star/check-size-at-cast-polymorphic-bad.rs
index e19e36cc7d7..85749aa7b00 100644
--- a/tests/ui/dyn-star/check-size-at-cast-polymorphic-bad.rs
+++ b/tests/ui/dyn-star/check-size-at-cast-polymorphic-bad.rs
@@ -9,7 +9,7 @@ fn dyn_debug(_: (dyn* Debug + '_)) {
 
 fn polymorphic<T: Debug + ?Sized>(t: &T) {
     dyn_debug(t);
-    //~^ ERROR `&T` needs to be a pointer-sized type
+    //~^ ERROR `&T` needs to have the same alignment and size as a pointer
 }
 
 fn main() {}
diff --git a/tests/ui/dyn-star/check-size-at-cast-polymorphic-bad.stderr b/tests/ui/dyn-star/check-size-at-cast-polymorphic-bad.stderr
index 53ccbe43dcc..350630f7941 100644
--- a/tests/ui/dyn-star/check-size-at-cast-polymorphic-bad.stderr
+++ b/tests/ui/dyn-star/check-size-at-cast-polymorphic-bad.stderr
@@ -1,14 +1,14 @@
-error[E0277]: `&T` needs to be a pointer-sized type
+error[E0277]: `&T` needs to have the same alignment and size as a pointer
   --> $DIR/check-size-at-cast-polymorphic-bad.rs:11:15
    |
 LL |     dyn_debug(t);
-   |               ^ `&T` needs to be a pointer-sized type
+   |               ^ `&T` needs to be a pointer-like type
    |
-   = help: the trait `PointerSized` is not implemented for `&T`
+   = help: the trait `PointerLike` is not implemented for `&T`
 help: consider introducing a `where` clause, but there might be an alternative better way to express this requirement
    |
-LL | fn polymorphic<T: Debug + ?Sized>(t: &T) where &T: PointerSized {
-   |                                          ++++++++++++++++++++++
+LL | fn polymorphic<T: Debug + ?Sized>(t: &T) where &T: PointerLike {
+   |                                          +++++++++++++++++++++
 
 error: aborting due to previous error
 
diff --git a/tests/ui/dyn-star/check-size-at-cast.rs b/tests/ui/dyn-star/check-size-at-cast.rs
index 1f22f798361..17bc4f303bf 100644
--- a/tests/ui/dyn-star/check-size-at-cast.rs
+++ b/tests/ui/dyn-star/check-size-at-cast.rs
@@ -5,6 +5,6 @@ use std::fmt::Debug;
 
 fn main() {
     let i = [1, 2, 3, 4] as dyn* Debug;
-    //~^ ERROR `[i32; 4]` needs to be a pointer-sized type
+    //~^ ERROR `[i32; 4]` needs to have the same alignment and size as a pointer
     dbg!(i);
 }
diff --git a/tests/ui/dyn-star/check-size-at-cast.stderr b/tests/ui/dyn-star/check-size-at-cast.stderr
index af2a1ccf71c..19700b40644 100644
--- a/tests/ui/dyn-star/check-size-at-cast.stderr
+++ b/tests/ui/dyn-star/check-size-at-cast.stderr
@@ -1,10 +1,10 @@
-error[E0277]: `[i32; 4]` needs to be a pointer-sized type
+error[E0277]: `[i32; 4]` needs to have the same alignment and size as a pointer
   --> $DIR/check-size-at-cast.rs:7:13
    |
 LL |     let i = [1, 2, 3, 4] as dyn* Debug;
-   |             ^^^^^^^^^^^^ `[i32; 4]` needs to be a pointer-sized type
+   |             ^^^^^^^^^^^^ `[i32; 4]` needs to be a pointer-like type
    |
-   = help: the trait `PointerSized` is not implemented for `[i32; 4]`
+   = help: the trait `PointerLike` is not implemented for `[i32; 4]`
 
 error: aborting due to previous error
 
diff --git a/tests/ui/dyn-star/upcast.stderr b/tests/ui/dyn-star/upcast.stderr
index 74ccd6a1889..e60144fea74 100644
--- a/tests/ui/dyn-star/upcast.stderr
+++ b/tests/ui/dyn-star/upcast.stderr
@@ -7,13 +7,13 @@ LL | #![feature(dyn_star, trait_upcasting)]
    = note: see issue #102425 <https://github.com/rust-lang/rust/issues/102425> for more information
    = note: `#[warn(incomplete_features)]` on by default
 
-error[E0277]: `dyn* Foo` needs to be a pointer-sized type
+error[E0277]: `dyn* Foo` needs to have the same alignment and size as a pointer
   --> $DIR/upcast.rs:30:23
    |
 LL |     let w: dyn* Bar = w;
-   |                       ^ `dyn* Foo` needs to be a pointer-sized type
+   |                       ^ `dyn* Foo` needs to be a pointer-like type
    |
-   = help: the trait `PointerSized` is not implemented for `dyn* Foo`
+   = help: the trait `PointerLike` is not implemented for `dyn* Foo`
 
 error: aborting due to previous error; 1 warning emitted
 
diff --git a/tests/ui/error-codes/E0523.rs b/tests/ui/error-codes/E0523.rs
new file mode 100644
index 00000000000..47717fbd508
--- /dev/null
+++ b/tests/ui/error-codes/E0523.rs
@@ -0,0 +1,14 @@
+// aux-build:crateresolve1-1.rs
+// aux-build:crateresolve1-2.rs
+// aux-build:crateresolve1-3.rs
+
+// normalize-stderr-test: "\.nll/" -> "/"
+// normalize-stderr-test: "\\\?\\" -> ""
+// normalize-stderr-test: "(lib)?crateresolve1-([123])\.[a-z]+" -> "libcrateresolve1-$2.somelib"
+
+// NOTE: This test is duplicated from `tests/ui/crate-loading/crateresolve1.rs`.
+
+extern crate crateresolve1;
+//~^ ERROR multiple candidates for `rlib` dependency `crateresolve1` found
+
+fn main() {}
diff --git a/tests/ui/error-codes/E0523.stderr b/tests/ui/error-codes/E0523.stderr
new file mode 100644
index 00000000000..8e3eb2159c2
--- /dev/null
+++ b/tests/ui/error-codes/E0523.stderr
@@ -0,0 +1,13 @@
+error[E0464]: multiple candidates for `rlib` dependency `crateresolve1` found
+  --> $DIR/E0523.rs:11:1
+   |
+LL | extern crate crateresolve1;
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: candidate #1: $TEST_BUILD_DIR/error-codes/E0523/auxiliary/libcrateresolve1-1.somelib
+   = note: candidate #2: $TEST_BUILD_DIR/error-codes/E0523/auxiliary/libcrateresolve1-2.somelib
+   = note: candidate #3: $TEST_BUILD_DIR/error-codes/E0523/auxiliary/libcrateresolve1-3.somelib
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0464`.
diff --git a/tests/ui/errors/trait-bound-error-spans/blame-trait-error.rs b/tests/ui/errors/trait-bound-error-spans/blame-trait-error.rs
new file mode 100644
index 00000000000..5134c672f5f
--- /dev/null
+++ b/tests/ui/errors/trait-bound-error-spans/blame-trait-error.rs
@@ -0,0 +1,28 @@
+trait T1 {}
+trait T2 {}
+trait T3 {}
+trait T4 {}
+
+impl<B: T2> T1 for Wrapper<B> {}
+
+impl T2 for i32 {}
+impl T3 for i32 {}
+
+impl<A: T3> T2 for Burrito<A> {}
+
+struct Wrapper<W> {
+    value: W,
+}
+
+struct Burrito<F> {
+    filling: F,
+}
+
+fn want<V: T1>(_x: V) {}
+
+fn example<Q>(q: Q) {
+    want(Wrapper { value: Burrito { filling: q } });
+    //~^ ERROR the trait bound `Q: T3` is not satisfied [E0277]
+}
+
+fn main() {}
diff --git a/tests/ui/errors/trait-bound-error-spans/blame-trait-error.stderr b/tests/ui/errors/trait-bound-error-spans/blame-trait-error.stderr
new file mode 100644
index 00000000000..27b002db130
--- /dev/null
+++ b/tests/ui/errors/trait-bound-error-spans/blame-trait-error.stderr
@@ -0,0 +1,35 @@
+error[E0277]: the trait bound `Q: T3` is not satisfied
+  --> $DIR/blame-trait-error.rs:24:46
+   |
+LL |     want(Wrapper { value: Burrito { filling: q } });
+   |     ----                                     ^ the trait `T3` is not implemented for `Q`
+   |     |
+   |     required by a bound introduced by this call
+   |
+note: required for `Burrito<Q>` to implement `T2`
+  --> $DIR/blame-trait-error.rs:11:13
+   |
+LL | impl<A: T3> T2 for Burrito<A> {}
+   |         --  ^^     ^^^^^^^^^^
+   |         |
+   |         unsatisfied trait bound introduced here
+note: required for `Wrapper<Burrito<Q>>` to implement `T1`
+  --> $DIR/blame-trait-error.rs:6:13
+   |
+LL | impl<B: T2> T1 for Wrapper<B> {}
+   |         --  ^^     ^^^^^^^^^^
+   |         |
+   |         unsatisfied trait bound introduced here
+note: required by a bound in `want`
+  --> $DIR/blame-trait-error.rs:21:12
+   |
+LL | fn want<V: T1>(_x: V) {}
+   |            ^^ required by this bound in `want`
+help: consider restricting type parameter `Q`
+   |
+LL | fn example<Q: T3>(q: Q) {
+   |             ++++
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/errors/traits/blame-trait-error-spans-on-exprs.rs b/tests/ui/errors/traits/blame-trait-error-spans-on-exprs.rs
new file mode 100644
index 00000000000..2b75f432412
--- /dev/null
+++ b/tests/ui/errors/traits/blame-trait-error-spans-on-exprs.rs
@@ -0,0 +1,131 @@
+// This test examines the error spans reported when a generic `impl` fails.
+// For example, if a function wants an `Option<T>` where `T: Copy` but you pass `Some(vec![1, 2])`,
+// then we want to point at the `vec![1, 2]` and not the `Some( ... )` expression.
+
+trait T1 {}
+trait T2 {}
+trait T3 {}
+trait T4 {}
+
+impl T2 for i32 {}
+impl T3 for i32 {}
+
+struct Wrapper<W> {
+    value: W,
+}
+impl<B: T2> T1 for Wrapper<B> {}
+
+struct Burrito<F> {
+    spicy: bool,
+    filling: F,
+}
+impl<A: T3> T2 for Burrito<A> {}
+
+struct BurritoTuple<F>(F);
+impl<C: T3> T2 for BurritoTuple<C> {}
+
+enum BurritoKinds<G> {
+    SmallBurrito { spicy: bool, small_filling: G },
+    LargeBurrito { spicy: bool, large_filling: G },
+    MultiBurrito { first_filling: G, second_filling: G },
+}
+impl<D: T3> T2 for BurritoKinds<D> {}
+
+struct Taco<H>(bool, H);
+impl<E: T3> T2 for Taco<E> {}
+
+enum TacoKinds<H> {
+    OneTaco(bool, H),
+    TwoTacos(bool, H, H),
+}
+impl<F: T3> T2 for TacoKinds<F> {}
+
+struct GenericBurrito<Spiciness, Filling> {
+    spiciness: Spiciness,
+    filling: Filling,
+}
+impl<X, Y: T3> T2 for GenericBurrito<X, Y> {}
+struct NotSpicy;
+
+impl<A: T3, B: T3> T2 for (A, B) {}
+impl<A: T2, B: T2> T1 for (A, B) {}
+
+fn want<V: T1>(_x: V) {}
+
+// Some more-complex examples:
+type AliasBurrito<T> = GenericBurrito<T, T>;
+
+// The following example is fairly confusing. The idea is that we want to "misdirect" the location
+// of the error.
+
+struct Two<A, B> {
+    a: A,
+    b: B,
+}
+
+impl<X, Y: T1, Z> T1 for Two<Two<X, Y>, Z> {}
+
+struct DoubleWrapper<T> {
+    item: Wrapper<T>,
+}
+
+impl<T: T1> T1 for DoubleWrapper<T> {}
+
+fn example<Q>(q: Q) {
+    // In each of the following examples, we expect the error span to point at the 'q' variable,
+    // since the missing constraint is `Q: T3`.
+
+    // Verifies for struct:
+    want(Wrapper { value: Burrito { spicy: false, filling: q } });
+    //~^ ERROR the trait bound `Q: T3` is not satisfied [E0277]
+
+    // Verifies for enum with named fields in variant:
+    want(Wrapper { value: BurritoKinds::SmallBurrito { spicy: true, small_filling: q } });
+    //~^ ERROR the trait bound `Q: T3` is not satisfied [E0277]
+
+    // Verifies for tuple struct:
+    want(Wrapper { value: Taco(false, q) });
+    //~^ ERROR the trait bound `Q: T3` is not satisfied [E0277]
+
+    // Verifies for tuple enum variant:
+    want(Wrapper { value: TacoKinds::OneTaco(false, q) });
+    //~^ ERROR the trait bound `Q: T3` is not satisfied [E0277]
+
+    // Verifies for generic type with multiple parameters:
+    want(Wrapper { value: GenericBurrito { spiciness: NotSpicy, filling: q } });
+    //~^ ERROR the trait bound `Q: T3` is not satisfied [E0277]
+
+    // Verifies for tuple:
+    want((3, q));
+    //~^ ERROR the trait bound `Q: T2` is not satisfied [E0277]
+
+    // Verifies for nested tuple:
+    want(Wrapper { value: (3, q) });
+    //~^ ERROR the trait bound `Q: T3` is not satisfied [E0277]
+
+    // Verifies for nested tuple:
+    want(((3, q), 5));
+    //~^ ERROR the trait bound `Q: T3` is not satisfied [E0277]
+
+    want(DoubleWrapper { item: Wrapper { value: q } });
+    //~^ ERROR the trait bound `Q: T1` is not satisfied [E0277]
+
+    want(DoubleWrapper { item: Wrapper { value: DoubleWrapper { item: Wrapper { value: q } } } });
+    //~^ ERROR the trait bound `Q: T1` is not satisfied [E0277]
+
+    // Verifies for type alias to struct:
+    want(Wrapper { value: AliasBurrito { spiciness: q, filling: q } });
+    //~^ ERROR the trait bound `Q: T3` is not satisfied [E0277]
+
+    want(Two { a: Two { a: (), b: q }, b: () });
+    //~^ ERROR the trait bound `Q: T1` is not satisfied [E0277]
+
+    // We *should* blame the 'q'.
+    // FIXME: Right now, the wrong field is blamed.
+    want(
+        Two { a: Two { a: (), b: Two { a: Two { a: (), b: q }, b: () } }, b: () },
+        //~^ ERROR the trait bound `Q: T1` is not satisfied [E0277]
+    );
+}
+
+fn main() {}
diff --git a/tests/ui/errors/traits/blame-trait-error-spans-on-exprs.stderr b/tests/ui/errors/traits/blame-trait-error-spans-on-exprs.stderr
new file mode 100644
index 00000000000..5f87c670d8a
--- /dev/null
+++ b/tests/ui/errors/traits/blame-trait-error-spans-on-exprs.stderr
@@ -0,0 +1,380 @@
+error[E0277]: the trait bound `Q: T3` is not satisfied
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:79:60
+   |
+LL |     want(Wrapper { value: Burrito { spicy: false, filling: q } });
+   |     ---- required by a bound introduced by this call       ^ the trait `T3` is not implemented for `Q`
+   |
+note: required for `Burrito<Q>` to implement `T2`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:22:13
+   |
+LL | impl<A: T3> T2 for Burrito<A> {}
+   |         --  ^^     ^^^^^^^^^^
+   |         |
+   |         unsatisfied trait bound introduced here
+note: required for `Wrapper<Burrito<Q>>` to implement `T1`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:16:13
+   |
+LL | impl<B: T2> T1 for Wrapper<B> {}
+   |         --  ^^     ^^^^^^^^^^
+   |         |
+   |         unsatisfied trait bound introduced here
+note: required by a bound in `want`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:53:12
+   |
+LL | fn want<V: T1>(_x: V) {}
+   |            ^^ required by this bound in `want`
+help: consider restricting type parameter `Q`
+   |
+LL | fn example<Q: T3>(q: Q) {
+   |             ++++
+
+error[E0277]: the trait bound `Q: T3` is not satisfied
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:83:84
+   |
+LL |     want(Wrapper { value: BurritoKinds::SmallBurrito { spicy: true, small_filling: q } });
+   |     ---- required by a bound introduced by this call                               ^ the trait `T3` is not implemented for `Q`
+   |
+note: required for `BurritoKinds<Q>` to implement `T2`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:32:13
+   |
+LL | impl<D: T3> T2 for BurritoKinds<D> {}
+   |         --  ^^     ^^^^^^^^^^^^^^^
+   |         |
+   |         unsatisfied trait bound introduced here
+note: required for `Wrapper<BurritoKinds<Q>>` to implement `T1`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:16:13
+   |
+LL | impl<B: T2> T1 for Wrapper<B> {}
+   |         --  ^^     ^^^^^^^^^^
+   |         |
+   |         unsatisfied trait bound introduced here
+note: required by a bound in `want`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:53:12
+   |
+LL | fn want<V: T1>(_x: V) {}
+   |            ^^ required by this bound in `want`
+help: consider restricting type parameter `Q`
+   |
+LL | fn example<Q: T3>(q: Q) {
+   |             ++++
+
+error[E0277]: the trait bound `Q: T3` is not satisfied
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:87:39
+   |
+LL |     want(Wrapper { value: Taco(false, q) });
+   |     ----                              ^ the trait `T3` is not implemented for `Q`
+   |     |
+   |     required by a bound introduced by this call
+   |
+note: required for `Taco<Q>` to implement `T2`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:35:13
+   |
+LL | impl<E: T3> T2 for Taco<E> {}
+   |         --  ^^     ^^^^^^^
+   |         |
+   |         unsatisfied trait bound introduced here
+note: required for `Wrapper<Taco<Q>>` to implement `T1`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:16:13
+   |
+LL | impl<B: T2> T1 for Wrapper<B> {}
+   |         --  ^^     ^^^^^^^^^^
+   |         |
+   |         unsatisfied trait bound introduced here
+note: required by a bound in `want`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:53:12
+   |
+LL | fn want<V: T1>(_x: V) {}
+   |            ^^ required by this bound in `want`
+help: consider restricting type parameter `Q`
+   |
+LL | fn example<Q: T3>(q: Q) {
+   |             ++++
+
+error[E0277]: the trait bound `Q: T3` is not satisfied
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:91:27
+   |
+LL |     want(Wrapper { value: TacoKinds::OneTaco(false, q) });
+   |     ----                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `T3` is not implemented for `Q`
+   |     |
+   |     required by a bound introduced by this call
+   |
+note: required for `TacoKinds<Q>` to implement `T2`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:41:13
+   |
+LL | impl<F: T3> T2 for TacoKinds<F> {}
+   |         --  ^^     ^^^^^^^^^^^^
+   |         |
+   |         unsatisfied trait bound introduced here
+note: required for `Wrapper<TacoKinds<Q>>` to implement `T1`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:16:13
+   |
+LL | impl<B: T2> T1 for Wrapper<B> {}
+   |         --  ^^     ^^^^^^^^^^
+   |         |
+   |         unsatisfied trait bound introduced here
+note: required by a bound in `want`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:53:12
+   |
+LL | fn want<V: T1>(_x: V) {}
+   |            ^^ required by this bound in `want`
+help: consider restricting type parameter `Q`
+   |
+LL | fn example<Q: T3>(q: Q) {
+   |             ++++
+
+error[E0277]: the trait bound `Q: T3` is not satisfied
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:95:74
+   |
+LL |     want(Wrapper { value: GenericBurrito { spiciness: NotSpicy, filling: q } });
+   |     ---- required by a bound introduced by this call                     ^ the trait `T3` is not implemented for `Q`
+   |
+note: required for `GenericBurrito<NotSpicy, Q>` to implement `T2`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:47:16
+   |
+LL | impl<X, Y: T3> T2 for GenericBurrito<X, Y> {}
+   |            --  ^^     ^^^^^^^^^^^^^^^^^^^^
+   |            |
+   |            unsatisfied trait bound introduced here
+note: required for `Wrapper<GenericBurrito<NotSpicy, Q>>` to implement `T1`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:16:13
+   |
+LL | impl<B: T2> T1 for Wrapper<B> {}
+   |         --  ^^     ^^^^^^^^^^
+   |         |
+   |         unsatisfied trait bound introduced here
+note: required by a bound in `want`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:53:12
+   |
+LL | fn want<V: T1>(_x: V) {}
+   |            ^^ required by this bound in `want`
+help: consider restricting type parameter `Q`
+   |
+LL | fn example<Q: T3>(q: Q) {
+   |             ++++
+
+error[E0277]: the trait bound `Q: T2` is not satisfied
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:99:14
+   |
+LL |     want((3, q));
+   |     ----     ^ the trait `T2` is not implemented for `Q`
+   |     |
+   |     required by a bound introduced by this call
+   |
+note: required for `(i32, Q)` to implement `T1`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:51:20
+   |
+LL | impl<A: T2, B: T2> T1 for (A, B) {}
+   |                --  ^^     ^^^^^^
+   |                |
+   |                unsatisfied trait bound introduced here
+note: required by a bound in `want`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:53:12
+   |
+LL | fn want<V: T1>(_x: V) {}
+   |            ^^ required by this bound in `want`
+help: consider restricting type parameter `Q`
+   |
+LL | fn example<Q: T2>(q: Q) {
+   |             ++++
+
+error[E0277]: the trait bound `Q: T3` is not satisfied
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:103:31
+   |
+LL |     want(Wrapper { value: (3, q) });
+   |     ----                      ^ the trait `T3` is not implemented for `Q`
+   |     |
+   |     required by a bound introduced by this call
+   |
+note: required for `(i32, Q)` to implement `T2`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:50:20
+   |
+LL | impl<A: T3, B: T3> T2 for (A, B) {}
+   |                --  ^^     ^^^^^^
+   |                |
+   |                unsatisfied trait bound introduced here
+note: required for `Wrapper<(i32, Q)>` to implement `T1`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:16:13
+   |
+LL | impl<B: T2> T1 for Wrapper<B> {}
+   |         --  ^^     ^^^^^^^^^^
+   |         |
+   |         unsatisfied trait bound introduced here
+note: required by a bound in `want`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:53:12
+   |
+LL | fn want<V: T1>(_x: V) {}
+   |            ^^ required by this bound in `want`
+help: consider restricting type parameter `Q`
+   |
+LL | fn example<Q: T3>(q: Q) {
+   |             ++++
+
+error[E0277]: the trait bound `Q: T3` is not satisfied
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:107:15
+   |
+LL |     want(((3, q), 5));
+   |     ----      ^ the trait `T3` is not implemented for `Q`
+   |     |
+   |     required by a bound introduced by this call
+   |
+note: required for `(i32, Q)` to implement `T2`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:50:20
+   |
+LL | impl<A: T3, B: T3> T2 for (A, B) {}
+   |                --  ^^     ^^^^^^
+   |                |
+   |                unsatisfied trait bound introduced here
+note: required for `((i32, Q), i32)` to implement `T1`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:51:20
+   |
+LL | impl<A: T2, B: T2> T1 for (A, B) {}
+   |         --         ^^     ^^^^^^
+   |         |
+   |         unsatisfied trait bound introduced here
+note: required by a bound in `want`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:53:12
+   |
+LL | fn want<V: T1>(_x: V) {}
+   |            ^^ required by this bound in `want`
+help: consider restricting type parameter `Q`
+   |
+LL | fn example<Q: T3>(q: Q) {
+   |             ++++
+
+error[E0277]: the trait bound `Q: T1` is not satisfied
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:110:49
+   |
+LL |     want(DoubleWrapper { item: Wrapper { value: q } });
+   |     ----                                        ^ the trait `T1` is not implemented for `Q`
+   |     |
+   |     required by a bound introduced by this call
+   |
+note: required for `DoubleWrapper<Q>` to implement `T1`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:72:13
+   |
+LL | impl<T: T1> T1 for DoubleWrapper<T> {}
+   |         --  ^^     ^^^^^^^^^^^^^^^^
+   |         |
+   |         unsatisfied trait bound introduced here
+note: required by a bound in `want`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:53:12
+   |
+LL | fn want<V: T1>(_x: V) {}
+   |            ^^ required by this bound in `want`
+help: consider restricting type parameter `Q`
+   |
+LL | fn example<Q: T1>(q: Q) {
+   |             ++++
+
+error[E0277]: the trait bound `Q: T1` is not satisfied
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:113:88
+   |
+LL |     want(DoubleWrapper { item: Wrapper { value: DoubleWrapper { item: Wrapper { value: q } } } });
+   |     ---- required by a bound introduced by this call                                   ^ the trait `T1` is not implemented for `Q`
+   |
+note: required for `DoubleWrapper<Q>` to implement `T1`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:72:13
+   |
+LL | impl<T: T1> T1 for DoubleWrapper<T> {}
+   |         --  ^^     ^^^^^^^^^^^^^^^^
+   |         |
+   |         unsatisfied trait bound introduced here
+   = note: 1 redundant requirement hidden
+   = note: required for `DoubleWrapper<DoubleWrapper<Q>>` to implement `T1`
+note: required by a bound in `want`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:53:12
+   |
+LL | fn want<V: T1>(_x: V) {}
+   |            ^^ required by this bound in `want`
+help: consider restricting type parameter `Q`
+   |
+LL | fn example<Q: T1>(q: Q) {
+   |             ++++
+
+error[E0277]: the trait bound `Q: T3` is not satisfied
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:117:27
+   |
+LL |     want(Wrapper { value: AliasBurrito { spiciness: q, filling: q } });
+   |     ----                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `T3` is not implemented for `Q`
+   |     |
+   |     required by a bound introduced by this call
+   |
+note: required for `GenericBurrito<Q, Q>` to implement `T2`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:47:16
+   |
+LL | impl<X, Y: T3> T2 for GenericBurrito<X, Y> {}
+   |            --  ^^     ^^^^^^^^^^^^^^^^^^^^
+   |            |
+   |            unsatisfied trait bound introduced here
+note: required for `Wrapper<GenericBurrito<Q, Q>>` to implement `T1`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:16:13
+   |
+LL | impl<B: T2> T1 for Wrapper<B> {}
+   |         --  ^^     ^^^^^^^^^^
+   |         |
+   |         unsatisfied trait bound introduced here
+note: required by a bound in `want`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:53:12
+   |
+LL | fn want<V: T1>(_x: V) {}
+   |            ^^ required by this bound in `want`
+help: consider restricting type parameter `Q`
+   |
+LL | fn example<Q: T3>(q: Q) {
+   |             ++++
+
+error[E0277]: the trait bound `Q: T1` is not satisfied
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:120:35
+   |
+LL |     want(Two { a: Two { a: (), b: q }, b: () });
+   |     ----                          ^ the trait `T1` is not implemented for `Q`
+   |     |
+   |     required by a bound introduced by this call
+   |
+note: required for `Two<Two<(), Q>, ()>` to implement `T1`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:66:19
+   |
+LL | impl<X, Y: T1, Z> T1 for Two<Two<X, Y>, Z> {}
+   |            --     ^^     ^^^^^^^^^^^^^^^^^
+   |            |
+   |            unsatisfied trait bound introduced here
+note: required by a bound in `want`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:53:12
+   |
+LL | fn want<V: T1>(_x: V) {}
+   |            ^^ required by this bound in `want`
+help: consider restricting type parameter `Q`
+   |
+LL | fn example<Q: T1>(q: Q) {
+   |             ++++
+
+error[E0277]: the trait bound `Q: T1` is not satisfied
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:126:59
+   |
+LL |     want(
+   |     ---- required by a bound introduced by this call
+LL |         Two { a: Two { a: (), b: Two { a: Two { a: (), b: q }, b: () } }, b: () },
+   |                                                           ^ the trait `T1` is not implemented for `Q`
+   |
+note: required for `Two<Two<(), Q>, ()>` to implement `T1`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:66:19
+   |
+LL | impl<X, Y: T1, Z> T1 for Two<Two<X, Y>, Z> {}
+   |            --     ^^     ^^^^^^^^^^^^^^^^^
+   |            |
+   |            unsatisfied trait bound introduced here
+   = note: 1 redundant requirement hidden
+   = note: required for `Two<Two<(), Two<Two<(), Q>, ()>>, ()>` to implement `T1`
+note: required by a bound in `want`
+  --> $DIR/blame-trait-error-spans-on-exprs.rs:53:12
+   |
+LL | fn want<V: T1>(_x: V) {}
+   |            ^^ required by this bound in `want`
+help: consider restricting type parameter `Q`
+   |
+LL | fn example<Q: T1>(q: Q) {
+   |             ++++
+
+error: aborting due to 13 previous errors
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/fmt/respanned-literal-issue-106191.rs b/tests/ui/fmt/respanned-literal-issue-106191.rs
index bb741c0ef93..5a18983a3fa 100644
--- a/tests/ui/fmt/respanned-literal-issue-106191.rs
+++ b/tests/ui/fmt/respanned-literal-issue-106191.rs
@@ -3,7 +3,7 @@
 // known-bug: #106191
 // unset-rustc-env:RUST_BACKTRACE
 // had to be reverted
-// error-pattern:internal compiler error
+// error-pattern:unexpectedly panicked
 // failure-status:101
 // dont-check-compiler-stderr
 
diff --git a/tests/ui/generic-associated-types/issue-68656-unsized-values.stderr b/tests/ui/generic-associated-types/issue-68656-unsized-values.stderr
index e8770aedfa1..f0212e985a9 100644
--- a/tests/ui/generic-associated-types/issue-68656-unsized-values.stderr
+++ b/tests/ui/generic-associated-types/issue-68656-unsized-values.stderr
@@ -15,8 +15,8 @@ LL |     type Item<'a>: std::ops::Deref<Target = T>;
    |                                    ^^^^^^^^^^ required by this bound in `UnsafeCopy::Item`
 help: consider further restricting this bound
    |
-LL | impl<T: Copy + std::ops::Deref + Deref<Target = T>> UnsafeCopy<T> for T {
-   |                                +++++++++++++++++++
+LL | impl<T: Copy + std::ops::Deref<Target = T>> UnsafeCopy<T> for T {
+   |                               ++++++++++++
 
 error: aborting due to previous error
 
diff --git a/tests/ui/generic-associated-types/missing-bounds.fixed b/tests/ui/generic-associated-types/missing-bounds.fixed
index ee758f19ec1..054adbffbea 100644
--- a/tests/ui/generic-associated-types/missing-bounds.fixed
+++ b/tests/ui/generic-associated-types/missing-bounds.fixed
@@ -4,7 +4,7 @@ use std::ops::Add;
 
 struct A<B>(B);
 
-impl<B> Add for A<B> where B: Add + Add<Output = B> {
+impl<B> Add for A<B> where B: Add<Output = B> {
     type Output = Self;
 
     fn add(self, rhs: Self) -> Self {
@@ -14,7 +14,7 @@ impl<B> Add for A<B> where B: Add + Add<Output = B> {
 
 struct C<B>(B);
 
-impl<B: Add + Add<Output = B>> Add for C<B> {
+impl<B: Add<Output = B>> Add for C<B> {
     type Output = Self;
 
     fn add(self, rhs: Self) -> Self {
@@ -34,7 +34,7 @@ impl<B: std::ops::Add<Output = B>> Add for D<B> {
 
 struct E<B>(B);
 
-impl<B: Add + Add<Output = B>> Add for E<B> where B: Add<Output = B> {
+impl<B: Add<Output = B>> Add for E<B> where B: Add<Output = B> {
     //~^ ERROR equality constraints are not yet supported in `where` clauses
     type Output = Self;
 
diff --git a/tests/ui/generic-associated-types/missing-bounds.stderr b/tests/ui/generic-associated-types/missing-bounds.stderr
index 9f669b9a521..535edec575a 100644
--- a/tests/ui/generic-associated-types/missing-bounds.stderr
+++ b/tests/ui/generic-associated-types/missing-bounds.stderr
@@ -37,8 +37,8 @@ LL | struct A<B>(B);
    |        ^
 help: consider further restricting this bound
    |
-LL | impl<B> Add for A<B> where B: Add + Add<Output = B> {
-   |                                   +++++++++++++++++
+LL | impl<B> Add for A<B> where B: Add<Output = B> {
+   |                                  ++++++++++++
 
 error[E0308]: mismatched types
   --> $DIR/missing-bounds.rs:21:14
@@ -60,8 +60,8 @@ LL | struct C<B>(B);
    |        ^
 help: consider further restricting this bound
    |
-LL | impl<B: Add + Add<Output = B>> Add for C<B> {
-   |             +++++++++++++++++
+LL | impl<B: Add<Output = B>> Add for C<B> {
+   |            ++++++++++++
 
 error[E0369]: cannot add `B` to `B`
   --> $DIR/missing-bounds.rs:31:21
@@ -96,8 +96,8 @@ LL | struct E<B>(B);
    |        ^
 help: consider further restricting this bound
    |
-LL | impl<B: Add + Add<Output = B>> Add for E<B> where <B as Add>::Output = B {
-   |             +++++++++++++++++
+LL | impl<B: Add<Output = B>> Add for E<B> where <B as Add>::Output = B {
+   |            ++++++++++++
 
 error: aborting due to 5 previous errors
 
diff --git a/tests/ui/impl-trait/issues/issue-86800.stderr b/tests/ui/impl-trait/issues/issue-86800.stderr
index 6c4aa35679d..f3a77383778 100644
--- a/tests/ui/impl-trait/issues/issue-86800.stderr
+++ b/tests/ui/impl-trait/issues/issue-86800.stderr
@@ -9,9 +9,7 @@ LL | type TransactionFuture<'__, O> = impl '__ + Future<Output = TransactionResu
 
 stack backtrace:
 
-error: internal compiler error: unexpected panic
-
-
+error: the compiler unexpectedly panicked. this is a bug.
 
 
 
diff --git a/tests/ui/issues/issue-51515.rs b/tests/ui/issues/issue-51515.rs
index 797c1085d51..84e09afac0a 100644
--- a/tests/ui/issues/issue-51515.rs
+++ b/tests/ui/issues/issue-51515.rs
@@ -5,6 +5,7 @@ fn main() {
     *foo = 32;
     //~^ ERROR cannot assign to `*foo`, which is behind a `&` reference
     let bar = foo;
+    //~^ HELP consider specifying this binding's type
     *bar = 64;
     //~^ ERROR cannot assign to `*bar`, which is behind a `&` reference
 }
diff --git a/tests/ui/issues/issue-51515.stderr b/tests/ui/issues/issue-51515.stderr
index c4e61e71953..94e5c9f1b83 100644
--- a/tests/ui/issues/issue-51515.stderr
+++ b/tests/ui/issues/issue-51515.stderr
@@ -10,12 +10,15 @@ LL |     let foo = &mut 16;
    |               ~~~~~~~
 
 error[E0594]: cannot assign to `*bar`, which is behind a `&` reference
-  --> $DIR/issue-51515.rs:8:5
+  --> $DIR/issue-51515.rs:9:5
    |
-LL |     let bar = foo;
-   |         --- consider changing this binding's type to be: `&mut i32`
 LL |     *bar = 64;
    |     ^^^^^^^^^ `bar` is a `&` reference, so the data it refers to cannot be written
+   |
+help: consider specifying this binding's type
+   |
+LL |     let bar: &mut i32 = foo;
+   |            ++++++++++
 
 error: aborting due to 2 previous errors
 
diff --git a/tests/ui/issues/issue-92741.fixed b/tests/ui/issues/issue-92741.fixed
new file mode 100644
index 00000000000..d07aeb6c029
--- /dev/null
+++ b/tests/ui/issues/issue-92741.fixed
@@ -0,0 +1,13 @@
+// run-rustfix
+fn main() {}
+fn _foo() -> bool {
+    if true { true } else { false }
+}
+
+fn _bar() -> bool {
+    if true { true } else { false }
+}
+
+fn _baz() -> bool {
+    if true { true } else { false }
+}
diff --git a/tests/ui/issues/issue-92741.rs b/tests/ui/issues/issue-92741.rs
new file mode 100644
index 00000000000..413d5bf0478
--- /dev/null
+++ b/tests/ui/issues/issue-92741.rs
@@ -0,0 +1,17 @@
+// run-rustfix
+fn main() {}
+fn _foo() -> bool {
+    &  //~ ERROR 4:5: 6:36: mismatched types [E0308]
+    mut
+    if true { true } else { false }
+}
+
+fn _bar() -> bool {
+    &  //~ ERROR 10:5: 11:40: mismatched types [E0308]
+    mut if true { true } else { false }
+}
+
+fn _baz() -> bool {
+    & mut //~ ERROR 15:5: 16:36: mismatched types [E0308]
+    if true { true } else { false }
+}
diff --git a/tests/ui/issues/issue-92741.stderr b/tests/ui/issues/issue-92741.stderr
new file mode 100644
index 00000000000..49315e7a8bf
--- /dev/null
+++ b/tests/ui/issues/issue-92741.stderr
@@ -0,0 +1,49 @@
+error[E0308]: mismatched types
+  --> $DIR/issue-92741.rs:4:5
+   |
+LL |   fn _foo() -> bool {
+   |                ---- expected `bool` because of return type
+LL | /     &
+LL | |     mut
+LL | |     if true { true } else { false }
+   | |___________________________________^ expected `bool`, found `&mut bool`
+   |
+help: consider removing the borrow
+   |
+LL -     &
+LL -     mut
+   |
+
+error[E0308]: mismatched types
+  --> $DIR/issue-92741.rs:10:5
+   |
+LL |   fn _bar() -> bool {
+   |                ---- expected `bool` because of return type
+LL | /     &
+LL | |     mut if true { true } else { false }
+   | |_______________________________________^ expected `bool`, found `&mut bool`
+   |
+help: consider removing the borrow
+   |
+LL -     &
+LL -     mut if true { true } else { false }
+LL +     if true { true } else { false }
+   |
+
+error[E0308]: mismatched types
+  --> $DIR/issue-92741.rs:15:5
+   |
+LL |   fn _baz() -> bool {
+   |                ---- expected `bool` because of return type
+LL | /     & mut
+LL | |     if true { true } else { false }
+   | |___________________________________^ expected `bool`, found `&mut bool`
+   |
+help: consider removing the borrow
+   |
+LL -     & mut
+   |
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/layout/valid_range_oob.stderr b/tests/ui/layout/valid_range_oob.stderr
index 7398f01643f..a3a514fb830 100644
--- a/tests/ui/layout/valid_range_oob.stderr
+++ b/tests/ui/layout/valid_range_oob.stderr
@@ -1,4 +1,4 @@
-error: internal compiler error: unexpected panic
+error: the compiler unexpectedly panicked. this is a bug.
 
 query stack during panic:
 #0 [layout_of] computing layout of `Foo`
diff --git a/tests/ui/lifetimes/issue-104432-unused-lifetimes-in-expansion.rs b/tests/ui/lifetimes/issue-104432-unused-lifetimes-in-expansion.rs
new file mode 100644
index 00000000000..5d5429ec895
--- /dev/null
+++ b/tests/ui/lifetimes/issue-104432-unused-lifetimes-in-expansion.rs
@@ -0,0 +1,12 @@
+// check-pass
+
+#![deny(unused_lifetimes)]
+trait Trait2 {
+    type As;
+}
+
+// we should not warn about an unused lifetime about code generated from this proc macro here
+#[derive(Clone)]
+struct ShimMethod4<T: Trait2 + 'static>(pub &'static dyn for<'s> Fn(&'s mut T::As));
+
+pub fn main() {}
diff --git a/tests/ui/lifetimes/issue-107492-default-value-for-lifetime.rs b/tests/ui/lifetimes/issue-107492-default-value-for-lifetime.rs
new file mode 100644
index 00000000000..f129035d040
--- /dev/null
+++ b/tests/ui/lifetimes/issue-107492-default-value-for-lifetime.rs
@@ -0,0 +1,6 @@
+pub struct DefaultLifetime<'a, 'b = 'static> {
+                                   //~^ ERROR unexpected default lifetime parameter
+    _marker: std::marker::PhantomData<&'a &'b ()>,
+}
+
+fn main(){}
diff --git a/tests/ui/lifetimes/issue-107492-default-value-for-lifetime.stderr b/tests/ui/lifetimes/issue-107492-default-value-for-lifetime.stderr
new file mode 100644
index 00000000000..c235c31809f
--- /dev/null
+++ b/tests/ui/lifetimes/issue-107492-default-value-for-lifetime.stderr
@@ -0,0 +1,8 @@
+error: unexpected default lifetime parameter
+  --> $DIR/issue-107492-default-value-for-lifetime.rs:1:35
+   |
+LL | pub struct DefaultLifetime<'a, 'b = 'static> {
+   |                                   ^^^^^^^^^ lifetime parameters cannot have default values
+
+error: aborting due to previous error
+
diff --git a/tests/ui/lint/unused/issue-103320-must-use-ops.rs b/tests/ui/lint/unused/issue-103320-must-use-ops.rs
new file mode 100644
index 00000000000..597d312fa5e
--- /dev/null
+++ b/tests/ui/lint/unused/issue-103320-must-use-ops.rs
@@ -0,0 +1,27 @@
+// check-pass
+
+#![warn(unused_must_use)]
+#![feature(never_type)]
+
+use std::ops::Add;
+use std::ops::Sub;
+use std::ops::Mul;
+use std::ops::Div;
+use std::ops::Rem;
+
+fn main() {
+    let x = 2_u32;
+    (x.add(4), x.sub(4), x.mul(4), x.div(4), x.rem(4));
+
+    x.add(4); //~ WARN unused return value of `add` that must be used
+
+    x.sub(4); //~ WARN unused return value of `sub` that must be used
+
+    x.mul(4); //~ WARN unused return value of `mul` that must be used
+
+    x.div(4); //~ WARN unused return value of `div` that must be used
+
+    x.rem(4); //~ WARN unused return value of `rem` that must be used
+
+    println!("{}", x);
+}
diff --git a/tests/ui/lint/unused/issue-103320-must-use-ops.stderr b/tests/ui/lint/unused/issue-103320-must-use-ops.stderr
new file mode 100644
index 00000000000..57439ec6a8f
--- /dev/null
+++ b/tests/ui/lint/unused/issue-103320-must-use-ops.stderr
@@ -0,0 +1,67 @@
+warning: unused return value of `add` that must be used
+  --> $DIR/issue-103320-must-use-ops.rs:16:5
+   |
+LL |     x.add(4);
+   |     ^^^^^^^^
+   |
+   = note: this returns the result of the operation, without modifying the original
+note: the lint level is defined here
+  --> $DIR/issue-103320-must-use-ops.rs:3:9
+   |
+LL | #![warn(unused_must_use)]
+   |         ^^^^^^^^^^^^^^^
+help: use `let _ = ...` to ignore the resulting value
+   |
+LL |     let _ = x.add(4);
+   |     +++++++
+
+warning: unused return value of `sub` that must be used
+  --> $DIR/issue-103320-must-use-ops.rs:18:5
+   |
+LL |     x.sub(4);
+   |     ^^^^^^^^
+   |
+   = note: this returns the result of the operation, without modifying the original
+help: use `let _ = ...` to ignore the resulting value
+   |
+LL |     let _ = x.sub(4);
+   |     +++++++
+
+warning: unused return value of `mul` that must be used
+  --> $DIR/issue-103320-must-use-ops.rs:20:5
+   |
+LL |     x.mul(4);
+   |     ^^^^^^^^
+   |
+   = note: this returns the result of the operation, without modifying the original
+help: use `let _ = ...` to ignore the resulting value
+   |
+LL |     let _ = x.mul(4);
+   |     +++++++
+
+warning: unused return value of `div` that must be used
+  --> $DIR/issue-103320-must-use-ops.rs:22:5
+   |
+LL |     x.div(4);
+   |     ^^^^^^^^
+   |
+   = note: this returns the result of the operation, without modifying the original
+help: use `let _ = ...` to ignore the resulting value
+   |
+LL |     let _ = x.div(4);
+   |     +++++++
+
+warning: unused return value of `rem` that must be used
+  --> $DIR/issue-103320-must-use-ops.rs:24:5
+   |
+LL |     x.rem(4);
+   |     ^^^^^^^^
+   |
+   = note: this returns the result of the operation, without modifying the original
+help: use `let _ = ...` to ignore the resulting value
+   |
+LL |     let _ = x.rem(4);
+   |     +++++++
+
+warning: 5 warnings emitted
+
diff --git a/tests/ui/macros/stringify.rs b/tests/ui/macros/stringify.rs
index 5cd217df6fc..fdc2a7666d6 100644
--- a/tests/ui/macros/stringify.rs
+++ b/tests/ui/macros/stringify.rs
@@ -626,7 +626,7 @@ fn test_item() {
         stringify_item!(
             impl ~const Struct {}
         ),
-        "impl Struct {}", // FIXME
+        "impl ~const Struct {}",
     );
 
     // ItemKind::MacCall
@@ -838,7 +838,7 @@ fn test_ty() {
     assert_eq!(stringify_ty!(dyn Send + 'a), "dyn Send + 'a");
     assert_eq!(stringify_ty!(dyn 'a + Send), "dyn 'a + Send");
     assert_eq!(stringify_ty!(dyn ?Sized), "dyn ?Sized");
-    assert_eq!(stringify_ty!(dyn ~const Clone), "dyn Clone"); // FIXME
+    assert_eq!(stringify_ty!(dyn ~const Clone), "dyn ~const Clone");
     assert_eq!(stringify_ty!(dyn for<'a> Send), "dyn for<'a> Send");
 
     // TyKind::ImplTrait
@@ -846,7 +846,7 @@ fn test_ty() {
     assert_eq!(stringify_ty!(impl Send + 'a), "impl Send + 'a");
     assert_eq!(stringify_ty!(impl 'a + Send), "impl 'a + Send");
     assert_eq!(stringify_ty!(impl ?Sized), "impl ?Sized");
-    assert_eq!(stringify_ty!(impl ~const Clone), "impl Clone"); // FIXME
+    assert_eq!(stringify_ty!(impl ~const Clone), "impl ~const Clone");
     assert_eq!(stringify_ty!(impl for<'a> Send), "impl for<'a> Send");
 
     // TyKind::Paren
diff --git a/tests/ui/malformed/issue-107423-unused-delim-only-one-no-pair.rs b/tests/ui/malformed/issue-107423-unused-delim-only-one-no-pair.rs
new file mode 100644
index 00000000000..4003ee37ca1
--- /dev/null
+++ b/tests/ui/malformed/issue-107423-unused-delim-only-one-no-pair.rs
@@ -0,0 +1,7 @@
+// check that we don't generate a span that points beyond EOF
+
+// error-pattern: unclosed delimiter
+// error-pattern: unclosed delimiter
+// error-pattern: unclosed delimiter
+
+fn a(){{{
diff --git a/tests/ui/malformed/issue-107423-unused-delim-only-one-no-pair.stderr b/tests/ui/malformed/issue-107423-unused-delim-only-one-no-pair.stderr
new file mode 100644
index 00000000000..0479035171e
--- /dev/null
+++ b/tests/ui/malformed/issue-107423-unused-delim-only-one-no-pair.stderr
@@ -0,0 +1,32 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-107423-unused-delim-only-one-no-pair.rs:7:11
+   |
+LL | fn a(){{{
+   |       --- ^
+   |       |||
+   |       ||unclosed delimiter
+   |       |unclosed delimiter
+   |       unclosed delimiter
+
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-107423-unused-delim-only-one-no-pair.rs:7:11
+   |
+LL | fn a(){{{
+   |       --- ^
+   |       |||
+   |       ||unclosed delimiter
+   |       |unclosed delimiter
+   |       unclosed delimiter
+
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-107423-unused-delim-only-one-no-pair.rs:7:11
+   |
+LL | fn a(){{{
+   |       --- ^
+   |       |||
+   |       ||unclosed delimiter
+   |       |unclosed delimiter
+   |       unclosed delimiter
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/mir/issue-107678-projection-with-lifetime.rs b/tests/ui/mir/issue-107678-projection-with-lifetime.rs
new file mode 100644
index 00000000000..14a45687875
--- /dev/null
+++ b/tests/ui/mir/issue-107678-projection-with-lifetime.rs
@@ -0,0 +1,20 @@
+// build-pass
+
+#![crate_type = "lib"]
+
+pub trait StreamOnce {
+    type Error;
+}
+
+pub trait ResetStream: StreamOnce {
+    fn reset(&mut self) -> Result<(), Self::Error>;
+}
+
+impl<'a> ResetStream for &'a str
+    where Self: StreamOnce
+{
+    #[inline]
+    fn reset(&mut self) -> Result<(), Self::Error> {
+        Ok(())
+    }
+}
diff --git a/tests/ui/mir/issue-107691.rs b/tests/ui/mir/issue-107691.rs
new file mode 100644
index 00000000000..517a172089f
--- /dev/null
+++ b/tests/ui/mir/issue-107691.rs
@@ -0,0 +1,42 @@
+// build-pass
+// compile-flags: -C opt-level=3
+
+#![crate_type = "lib"]
+
+pub trait Archive {
+    type Archived;
+    type Resolver;
+
+    fn resolve(resolver: Self::Resolver, out: *mut Self::Archived);
+}
+
+pub type Archived<T> = <T as Archive>::Archived;
+pub type Resolver<T> = <T as Archive>::Resolver;
+
+pub struct Record<'a> {
+    _payload: &'a [u8],
+}
+
+pub struct ArchivedRecord<'a>
+where
+    &'a [u8]: Archive,
+{
+    _payload: Archived<&'a [u8]>,
+}
+
+pub struct RecordResolver<'a>
+where
+    &'a [u8]: Archive,
+{
+    _payload: Resolver<&'a [u8]>,
+}
+
+impl<'a> Archive for Record<'a>
+where
+    &'a [u8]: Archive,
+{
+    type Archived = ArchivedRecord<'a>;
+    type Resolver = RecordResolver<'a>;
+
+    fn resolve(_resolver: Self::Resolver, _out: *mut Self::Archived) {}
+}
diff --git a/tests/ui/panics/default-backtrace-ice.stderr b/tests/ui/panics/default-backtrace-ice.stderr
index a0025d7e221..7bf08bee922 100644
--- a/tests/ui/panics/default-backtrace-ice.stderr
+++ b/tests/ui/panics/default-backtrace-ice.stderr
@@ -4,9 +4,7 @@ LL | fn main() { missing_ident; }
 
 stack backtrace:
 
-error: internal compiler error: unexpected panic
-
-
+error: the compiler unexpectedly panicked. this is a bug.
 
 
 
diff --git a/tests/ui/parser/bad-recover-kw-after-impl.rs b/tests/ui/parser/bad-recover-kw-after-impl.rs
new file mode 100644
index 00000000000..218cd767859
--- /dev/null
+++ b/tests/ui/parser/bad-recover-kw-after-impl.rs
@@ -0,0 +1,15 @@
+// check-pass
+
+// edition:2021
+// for the `impl` + keyword test
+
+macro_rules! impl_primitive {
+    ($ty:ty) => {
+        compile_error!("whoops");
+    };
+    (impl async) => {};
+}
+
+impl_primitive!(impl async);
+
+fn main() {}
diff --git a/tests/ui/parser/bad-recover-ty-after-impl.rs b/tests/ui/parser/bad-recover-ty-after-impl.rs
new file mode 100644
index 00000000000..510e08ba091
--- /dev/null
+++ b/tests/ui/parser/bad-recover-ty-after-impl.rs
@@ -0,0 +1,17 @@
+// check-pass
+
+macro_rules! impl_primitive {
+    ($ty:ty) => { impl_primitive!(impl $ty); };
+    (impl $ty:ty) => { fn a(_: $ty) {} }
+}
+
+impl_primitive! { u8 }
+
+macro_rules! test {
+    ($ty:ty) => { compile_error!("oh no"); };
+    (impl &) => {};
+}
+
+test!(impl &);
+
+fn main() {}
diff --git a/tests/ui/parser/missing-expression-in-for-loop.rs b/tests/ui/parser/missing-expression-in-for-loop.rs
new file mode 100644
index 00000000000..518a89a0e6f
--- /dev/null
+++ b/tests/ui/parser/missing-expression-in-for-loop.rs
@@ -0,0 +1,5 @@
+fn main() {
+    for i in {
+        //~^ ERROR missing expression to iterate on in `for` loop
+    }
+}
diff --git a/tests/ui/parser/missing-expression-in-for-loop.stderr b/tests/ui/parser/missing-expression-in-for-loop.stderr
new file mode 100644
index 00000000000..74a7c4224fa
--- /dev/null
+++ b/tests/ui/parser/missing-expression-in-for-loop.stderr
@@ -0,0 +1,13 @@
+error: missing expression to iterate on in `for` loop
+  --> $DIR/missing-expression-in-for-loop.rs:2:14
+   |
+LL |     for i in {
+   |              ^
+   |
+help: try adding an expression to the `for` loop
+   |
+LL |     for i in /* expression */ {
+   |              ++++++++++++++++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/raw/too-many-hash.rs b/tests/ui/parser/raw/too-many-hash.rs
new file mode 100644
index 00000000000..f3d3b207fad
--- /dev/null
+++ b/tests/ui/parser/raw/too-many-hash.rs
@@ -0,0 +1,6 @@
+// ignore-tidy-linelength
+
+fn main() {
+    let s: &str = r################################################################################################################################################################################################################################################################"very raw"################################################################################################################################################################################################################################################################;
+    //~^ ERROR too many `#` symbols: raw strings may be delimited by up to 255 `#` symbols, but found 256
+}
diff --git a/tests/ui/parser/raw/too-many-hash.stderr b/tests/ui/parser/raw/too-many-hash.stderr
new file mode 100644
index 00000000000..29ec17842aa
--- /dev/null
+++ b/tests/ui/parser/raw/too-many-hash.stderr
@@ -0,0 +1,8 @@
+error: too many `#` symbols: raw strings may be delimited by up to 255 `#` symbols, but found 256
+  --> $DIR/too-many-hash.rs:4:19
+   |
+LL | ... = r################################################################################################################################################################################################################################################################"very raw"##############################################################################################################################################################################################################################################################...
+   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/recover-quantified-closure.rs b/tests/ui/parser/recover-quantified-closure.rs
index df22f5e065c..10af39b7007 100644
--- a/tests/ui/parser/recover-quantified-closure.rs
+++ b/tests/ui/parser/recover-quantified-closure.rs
@@ -7,6 +7,6 @@ fn main() {
 enum Foo { Bar }
 fn foo(x: impl Iterator<Item = Foo>) {
     for <Foo>::Bar in x {}
-    //~^ ERROR expected one of `const`, `move`, `static`, `|`
+    //~^ ERROR expected one of `move`, `static`, `|`
     //~^^ ERROR `for<...>` binders for closures are experimental
 }
diff --git a/tests/ui/parser/recover-quantified-closure.stderr b/tests/ui/parser/recover-quantified-closure.stderr
index 9ec4d2c034d..39eec80f658 100644
--- a/tests/ui/parser/recover-quantified-closure.stderr
+++ b/tests/ui/parser/recover-quantified-closure.stderr
@@ -1,8 +1,8 @@
-error: expected one of `const`, `move`, `static`, `|`, or `||`, found `::`
+error: expected one of `move`, `static`, `|`, or `||`, found `::`
   --> $DIR/recover-quantified-closure.rs:9:14
    |
 LL |     for <Foo>::Bar in x {}
-   |              ^^ expected one of `const`, `move`, `static`, `|`, or `||`
+   |              ^^ expected one of `move`, `static`, `|`, or `||`
 
 error[E0658]: `for<...>` binders for closures are experimental
   --> $DIR/recover-quantified-closure.rs:2:5
diff --git a/tests/ui/print_type_sizes/async.stdout b/tests/ui/print_type_sizes/async.stdout
index 4588c0ebd81..8fe936efc89 100644
--- a/tests/ui/print_type_sizes/async.stdout
+++ b/tests/ui/print_type_sizes/async.stdout
@@ -1,11 +1,11 @@
 print-type-size type: `[async fn body@$DIR/async.rs:8:36: 11:2]`: 16386 bytes, alignment: 1 bytes
 print-type-size     discriminant: 1 bytes
+print-type-size     variant `Unresumed`: 8192 bytes
+print-type-size         upvar `.arg`: 8192 bytes, offset: 0 bytes, alignment: 1 bytes
 print-type-size     variant `Suspend0`: 16385 bytes
 print-type-size         upvar `.arg`: 8192 bytes, offset: 0 bytes, alignment: 1 bytes
 print-type-size         local `.arg`: 8192 bytes
 print-type-size         local `.__awaitee`: 1 bytes
-print-type-size     variant `Unresumed`: 8192 bytes
-print-type-size         upvar `.arg`: 8192 bytes, offset: 0 bytes, alignment: 1 bytes
 print-type-size     variant `Returned`: 8192 bytes
 print-type-size         upvar `.arg`: 8192 bytes, offset: 0 bytes, alignment: 1 bytes
 print-type-size     variant `Panicked`: 8192 bytes
diff --git a/tests/ui/print_type_sizes/generator.stdout b/tests/ui/print_type_sizes/generator.stdout
index 13d850a6690..7c58d6ce5ff 100644
--- a/tests/ui/print_type_sizes/generator.stdout
+++ b/tests/ui/print_type_sizes/generator.stdout
@@ -2,9 +2,9 @@ print-type-size type: `[generator@$DIR/generator.rs:10:5: 10:14]`: 8193 bytes, a
 print-type-size     discriminant: 1 bytes
 print-type-size     variant `Unresumed`: 8192 bytes
 print-type-size         upvar `.array`: 8192 bytes, offset: 0 bytes, alignment: 1 bytes
+print-type-size     variant `Suspend0`: 8192 bytes
+print-type-size         upvar `.array`: 8192 bytes, offset: 0 bytes, alignment: 1 bytes
 print-type-size     variant `Returned`: 8192 bytes
 print-type-size         upvar `.array`: 8192 bytes, offset: 0 bytes, alignment: 1 bytes
 print-type-size     variant `Panicked`: 8192 bytes
 print-type-size         upvar `.array`: 8192 bytes, offset: 0 bytes, alignment: 1 bytes
-print-type-size     variant `Suspend0`: 8192 bytes
-print-type-size         upvar `.array`: 8192 bytes, offset: 0 bytes, alignment: 1 bytes
diff --git a/tests/ui/print_type_sizes/generator_discr_placement.stdout b/tests/ui/print_type_sizes/generator_discr_placement.stdout
index b294b2d139c..f2a11c7a33b 100644
--- a/tests/ui/print_type_sizes/generator_discr_placement.stdout
+++ b/tests/ui/print_type_sizes/generator_discr_placement.stdout
@@ -1,11 +1,11 @@
 print-type-size type: `[generator@$DIR/generator_discr_placement.rs:11:13: 11:15]`: 8 bytes, alignment: 4 bytes
 print-type-size     discriminant: 1 bytes
+print-type-size     variant `Unresumed`: 0 bytes
 print-type-size     variant `Suspend0`: 7 bytes
 print-type-size         padding: 3 bytes
 print-type-size         local `.w`: 4 bytes, alignment: 4 bytes
 print-type-size     variant `Suspend1`: 7 bytes
 print-type-size         padding: 3 bytes
 print-type-size         local `.z`: 4 bytes, alignment: 4 bytes
-print-type-size     variant `Unresumed`: 0 bytes
 print-type-size     variant `Returned`: 0 bytes
 print-type-size     variant `Panicked`: 0 bytes
diff --git a/tests/ui/recursion/issue-83150.stderr b/tests/ui/recursion/issue-83150.stderr
index dde8ad1b6b3..64683ae3a6e 100644
--- a/tests/ui/recursion/issue-83150.stderr
+++ b/tests/ui/recursion/issue-83150.stderr
@@ -9,9 +9,11 @@ LL |     func(&mut iter.map(|x| x + 1))
    = help: a `loop` may express intention better if this is on purpose
    = note: `#[warn(unconditional_recursion)]` on by default
 
-error[E0275]: overflow evaluating the requirement `Map<&mut Map<&mut Map<&mut Map<..., ...>, ...>, ...>, ...>: Iterator`
+error[E0275]: overflow evaluating the requirement `Map<&mut std::ops::Range<u8>, [closure@$DIR/issue-83150.rs:12:24: 12:27]>: Iterator`
    |
    = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`issue_83150`)
+   = note: required for `&mut Map<&mut std::ops::Range<u8>, [closure@$DIR/issue-83150.rs:12:24: 12:27]>` to implement `Iterator`
+   = note: 65 redundant requirements hidden
    = note: required for `&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<..., ...>, ...>, ...>, ...>, ...>, ...>, ...>` to implement `Iterator`
    = note: the full type name has been written to '$TEST_BUILD_DIR/recursion/issue-83150/issue-83150.long-type-hash.txt'
 
diff --git a/tests/ui/rfc-2632-const-trait-impl/const-closure-parse-not-item.rs b/tests/ui/rfc-2632-const-trait-impl/const-closure-parse-not-item.rs
new file mode 100644
index 00000000000..2c99d8bf1c6
--- /dev/null
+++ b/tests/ui/rfc-2632-const-trait-impl/const-closure-parse-not-item.rs
@@ -0,0 +1,10 @@
+// check-pass
+
+#![feature(const_trait_impl, const_closures)]
+#![allow(incomplete_features)]
+
+const fn test() -> impl ~const Fn() {
+    const move || {}
+}
+
+fn main() {}
diff --git a/tests/ui/rfc-2632-const-trait-impl/const_derives/derive-const-with-params.rs b/tests/ui/rfc-2632-const-trait-impl/const_derives/derive-const-with-params.rs
new file mode 100644
index 00000000000..72edfbc97e4
--- /dev/null
+++ b/tests/ui/rfc-2632-const-trait-impl/const_derives/derive-const-with-params.rs
@@ -0,0 +1,13 @@
+// check-pass
+
+#![feature(derive_const)]
+#![feature(const_trait_impl)]
+
+#[derive_const(PartialEq)]
+pub struct Reverse<T>(T);
+
+const fn foo(a: Reverse<i32>, b: Reverse<i32>) -> bool {
+    a == b
+}
+
+fn main() {}
diff --git a/tests/ui/suggest-null-ptr.fixed b/tests/ui/suggest-null-ptr.fixed
new file mode 100644
index 00000000000..40f900c7d30
--- /dev/null
+++ b/tests/ui/suggest-null-ptr.fixed
@@ -0,0 +1,31 @@
+// run-rustfix
+
+// Suggest providing a std::ptr::null{,_mut}() to a function that takes in a raw
+// pointer if a literal 0 was provided by the user.
+
+extern "C" {
+    fn foo(ptr: *const u8);
+
+    fn foo_mut(ptr: *mut u8);
+
+    fn usize(ptr: *const usize);
+
+    fn usize_mut(ptr: *mut usize);
+}
+
+fn main() {
+    unsafe {
+        foo(std::ptr::null());
+        //~^ mismatched types [E0308]
+        //~| if you meant to create a null pointer, use `std::ptr::null()`
+        foo_mut(std::ptr::null_mut());
+        //~^ mismatched types [E0308]
+        //~| if you meant to create a null pointer, use `std::ptr::null_mut()`
+        usize(std::ptr::null());
+        //~^ mismatched types [E0308]
+        //~| if you meant to create a null pointer, use `std::ptr::null()`
+        usize_mut(std::ptr::null_mut());
+        //~^ mismatched types [E0308]
+        //~| if you meant to create a null pointer, use `std::ptr::null_mut()`
+    }
+}
diff --git a/tests/ui/suggest-null-ptr.rs b/tests/ui/suggest-null-ptr.rs
new file mode 100644
index 00000000000..19b595bf769
--- /dev/null
+++ b/tests/ui/suggest-null-ptr.rs
@@ -0,0 +1,31 @@
+// run-rustfix
+
+// Suggest providing a std::ptr::null{,_mut}() to a function that takes in a raw
+// pointer if a literal 0 was provided by the user.
+
+extern "C" {
+    fn foo(ptr: *const u8);
+
+    fn foo_mut(ptr: *mut u8);
+
+    fn usize(ptr: *const usize);
+
+    fn usize_mut(ptr: *mut usize);
+}
+
+fn main() {
+    unsafe {
+        foo(0);
+        //~^ mismatched types [E0308]
+        //~| if you meant to create a null pointer, use `std::ptr::null()`
+        foo_mut(0);
+        //~^ mismatched types [E0308]
+        //~| if you meant to create a null pointer, use `std::ptr::null_mut()`
+        usize(0);
+        //~^ mismatched types [E0308]
+        //~| if you meant to create a null pointer, use `std::ptr::null()`
+        usize_mut(0);
+        //~^ mismatched types [E0308]
+        //~| if you meant to create a null pointer, use `std::ptr::null_mut()`
+    }
+}
diff --git a/tests/ui/suggest-null-ptr.stderr b/tests/ui/suggest-null-ptr.stderr
new file mode 100644
index 00000000000..66a79d0749e
--- /dev/null
+++ b/tests/ui/suggest-null-ptr.stderr
@@ -0,0 +1,83 @@
+error[E0308]: mismatched types
+  --> $DIR/suggest-null-ptr.rs:18:13
+   |
+LL |         foo(0);
+   |         --- ^ expected `*const u8`, found `usize`
+   |         |
+   |         arguments to this function are incorrect
+   |
+   = note: expected raw pointer `*const u8`
+                     found type `usize`
+note: function defined here
+  --> $DIR/suggest-null-ptr.rs:7:8
+   |
+LL |     fn foo(ptr: *const u8);
+   |        ^^^
+help: if you meant to create a null pointer, use `std::ptr::null()`
+   |
+LL |         foo(std::ptr::null());
+   |             ~~~~~~~~~~~~~~~~
+
+error[E0308]: mismatched types
+  --> $DIR/suggest-null-ptr.rs:21:17
+   |
+LL |         foo_mut(0);
+   |         ------- ^ expected `*mut u8`, found `usize`
+   |         |
+   |         arguments to this function are incorrect
+   |
+   = note: expected raw pointer `*mut u8`
+                     found type `usize`
+note: function defined here
+  --> $DIR/suggest-null-ptr.rs:9:8
+   |
+LL |     fn foo_mut(ptr: *mut u8);
+   |        ^^^^^^^
+help: if you meant to create a null pointer, use `std::ptr::null_mut()`
+   |
+LL |         foo_mut(std::ptr::null_mut());
+   |                 ~~~~~~~~~~~~~~~~~~~~
+
+error[E0308]: mismatched types
+  --> $DIR/suggest-null-ptr.rs:24:15
+   |
+LL |         usize(0);
+   |         ----- ^ expected `*const usize`, found `usize`
+   |         |
+   |         arguments to this function are incorrect
+   |
+   = note: expected raw pointer `*const usize`
+                     found type `usize`
+note: function defined here
+  --> $DIR/suggest-null-ptr.rs:11:8
+   |
+LL |     fn usize(ptr: *const usize);
+   |        ^^^^^
+help: if you meant to create a null pointer, use `std::ptr::null()`
+   |
+LL |         usize(std::ptr::null());
+   |               ~~~~~~~~~~~~~~~~
+
+error[E0308]: mismatched types
+  --> $DIR/suggest-null-ptr.rs:27:19
+   |
+LL |         usize_mut(0);
+   |         --------- ^ expected `*mut usize`, found `usize`
+   |         |
+   |         arguments to this function are incorrect
+   |
+   = note: expected raw pointer `*mut usize`
+                     found type `usize`
+note: function defined here
+  --> $DIR/suggest-null-ptr.rs:13:8
+   |
+LL |     fn usize_mut(ptr: *mut usize);
+   |        ^^^^^^^^^
+help: if you meant to create a null pointer, use `std::ptr::null_mut()`
+   |
+LL |         usize_mut(std::ptr::null_mut());
+   |                   ~~~~~~~~~~~~~~~~~~~~
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/suggestions/restrict-existing-type-bounds.rs b/tests/ui/suggestions/restrict-existing-type-bounds.rs
new file mode 100644
index 00000000000..07712ce0de6
--- /dev/null
+++ b/tests/ui/suggestions/restrict-existing-type-bounds.rs
@@ -0,0 +1,30 @@
+pub trait TryAdd<Rhs = Self> {
+    type Error;
+    type Output;
+
+    fn try_add(self, rhs: Rhs) -> Result<Self::Output, Self::Error>;
+}
+
+impl<T: TryAdd> TryAdd for Option<T> {
+    type Error = <T as TryAdd>::Error;
+    type Output = Option<<T as TryAdd>::Output>;
+
+    fn try_add(self, rhs: Self) -> Result<Self::Output, Self::Error> {
+        Ok(self) //~ ERROR mismatched types
+    }
+}
+
+struct Other<A>(A);
+
+struct X;
+
+impl<T: TryAdd<Error = X>> TryAdd for Other<T> {
+    type Error = <T as TryAdd>::Error;
+    type Output = Other<<T as TryAdd>::Output>;
+
+    fn try_add(self, rhs: Self) -> Result<Self::Output, Self::Error> {
+        Ok(self) //~ ERROR mismatched types
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/suggestions/restrict-existing-type-bounds.stderr b/tests/ui/suggestions/restrict-existing-type-bounds.stderr
new file mode 100644
index 00000000000..14a244b790a
--- /dev/null
+++ b/tests/ui/suggestions/restrict-existing-type-bounds.stderr
@@ -0,0 +1,57 @@
+error[E0308]: mismatched types
+  --> $DIR/restrict-existing-type-bounds.rs:13:12
+   |
+LL | impl<T: TryAdd> TryAdd for Option<T> {
+   |      - this type parameter
+...
+LL |         Ok(self)
+   |         -- ^^^^ expected `Option<<T as TryAdd>::Output>`, found `Option<T>`
+   |         |
+   |         arguments to this enum variant are incorrect
+   |
+   = note: expected enum `Option<<T as TryAdd>::Output>`
+              found enum `Option<T>`
+help: the type constructed contains `Option<T>` due to the type of the argument passed
+  --> $DIR/restrict-existing-type-bounds.rs:13:9
+   |
+LL |         Ok(self)
+   |         ^^^----^
+   |            |
+   |            this argument influences the type of `Ok`
+note: tuple variant defined here
+  --> $SRC_DIR/core/src/result.rs:LL:COL
+help: consider further restricting this bound
+   |
+LL | impl<T: TryAdd<Output = T>> TryAdd for Option<T> {
+   |               ++++++++++++
+
+error[E0308]: mismatched types
+  --> $DIR/restrict-existing-type-bounds.rs:26:12
+   |
+LL | impl<T: TryAdd<Error = X>> TryAdd for Other<T> {
+   |      - this type parameter
+...
+LL |         Ok(self)
+   |         -- ^^^^ expected `Other<<T as TryAdd>::Output>`, found `Other<T>`
+   |         |
+   |         arguments to this enum variant are incorrect
+   |
+   = note: expected struct `Other<<T as TryAdd>::Output>`
+              found struct `Other<T>`
+help: the type constructed contains `Other<T>` due to the type of the argument passed
+  --> $DIR/restrict-existing-type-bounds.rs:26:9
+   |
+LL |         Ok(self)
+   |         ^^^----^
+   |            |
+   |            this argument influences the type of `Ok`
+note: tuple variant defined here
+  --> $SRC_DIR/core/src/result.rs:LL:COL
+help: consider further restricting this bound
+   |
+LL | impl<T: TryAdd<Error = X, Output = T>> TryAdd for Other<T> {
+   |                         ++++++++++++
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/suggestions/suggest-fn-ptr-for-fn-item-in-fn-ret.fixed b/tests/ui/suggestions/suggest-fn-ptr-for-fn-item-in-fn-ret.fixed
new file mode 100644
index 00000000000..abb9ef91774
--- /dev/null
+++ b/tests/ui/suggestions/suggest-fn-ptr-for-fn-item-in-fn-ret.fixed
@@ -0,0 +1,12 @@
+// run-rustfix
+
+#![allow(unused)]
+
+struct Wrapper<T>(T);
+
+fn bar() -> Wrapper<fn()> { Wrapper(foo) }
+//~^ ERROR the placeholder `_` is not allowed within types on item signatures for return types
+
+fn foo() {}
+
+fn main() {}
diff --git a/tests/ui/suggestions/suggest-fn-ptr-for-fn-item-in-fn-ret.rs b/tests/ui/suggestions/suggest-fn-ptr-for-fn-item-in-fn-ret.rs
new file mode 100644
index 00000000000..d2a79c38694
--- /dev/null
+++ b/tests/ui/suggestions/suggest-fn-ptr-for-fn-item-in-fn-ret.rs
@@ -0,0 +1,12 @@
+// run-rustfix
+
+#![allow(unused)]
+
+struct Wrapper<T>(T);
+
+fn bar() -> _ { Wrapper(foo) }
+//~^ ERROR the placeholder `_` is not allowed within types on item signatures for return types
+
+fn foo() {}
+
+fn main() {}
diff --git a/tests/ui/suggestions/suggest-fn-ptr-for-fn-item-in-fn-ret.stderr b/tests/ui/suggestions/suggest-fn-ptr-for-fn-item-in-fn-ret.stderr
new file mode 100644
index 00000000000..347a038525b
--- /dev/null
+++ b/tests/ui/suggestions/suggest-fn-ptr-for-fn-item-in-fn-ret.stderr
@@ -0,0 +1,12 @@
+error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
+  --> $DIR/suggest-fn-ptr-for-fn-item-in-fn-ret.rs:7:13
+   |
+LL | fn bar() -> _ { Wrapper(foo) }
+   |             ^
+   |             |
+   |             not allowed in type signatures
+   |             help: replace with the correct return type: `Wrapper<fn()>`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0121`.
diff --git a/tests/ui/suggestions/type-mismatch-byte-literal.rs b/tests/ui/suggestions/type-mismatch-byte-literal.rs
index 34199f8c37c..80cd2ca7dfc 100644
--- a/tests/ui/suggestions/type-mismatch-byte-literal.rs
+++ b/tests/ui/suggestions/type-mismatch-byte-literal.rs
@@ -12,7 +12,19 @@ fn main() {
     //~^ ERROR: mismatched types [E0308]
     //~| HELP: if you meant to write a byte literal, prefix with `b`
 
+    let _a: u8 = '\x20';
+    //~^ ERROR: mismatched types [E0308]
+    //~| HELP: if you meant to write a byte literal, prefix with `b`
+
+    // Do not issue the suggestion if the char literal is a Unicode escape
+    foo('\u{0080}');
+    //~^ ERROR: mismatched types [E0308]
+
     // Do not issue the suggestion if the char literal isn't ASCII
     let _t: u8 = '€';
     //~^ ERROR: mismatched types [E0308]
+
+    // Do not issue the suggestion if the char literal isn't ASCII
+    foo('\u{1f980}');
+    //~^ ERROR: mismatched types [E0308]
 }
diff --git a/tests/ui/suggestions/type-mismatch-byte-literal.stderr b/tests/ui/suggestions/type-mismatch-byte-literal.stderr
index c9c2e7498d0..3d27149f0dc 100644
--- a/tests/ui/suggestions/type-mismatch-byte-literal.stderr
+++ b/tests/ui/suggestions/type-mismatch-byte-literal.stderr
@@ -30,13 +30,54 @@ LL |     foo(b'#');
    |         ~~~~
 
 error[E0308]: mismatched types
-  --> $DIR/type-mismatch-byte-literal.rs:16:18
+  --> $DIR/type-mismatch-byte-literal.rs:15:18
+   |
+LL |     let _a: u8 = '\x20';
+   |             --   ^^^^^^ expected `u8`, found `char`
+   |             |
+   |             expected due to this
+   |
+help: if you meant to write a byte literal, prefix with `b`
+   |
+LL |     let _a: u8 = b'\x20';
+   |                  ~~~~~~~
+
+error[E0308]: mismatched types
+  --> $DIR/type-mismatch-byte-literal.rs:20:9
+   |
+LL |     foo('\u{0080}');
+   |     --- ^^^^^^^^^^ expected `u8`, found `char`
+   |     |
+   |     arguments to this function are incorrect
+   |
+note: function defined here
+  --> $DIR/type-mismatch-byte-literal.rs:4:4
+   |
+LL | fn foo(_t: u8) {}
+   |    ^^^ ------
+
+error[E0308]: mismatched types
+  --> $DIR/type-mismatch-byte-literal.rs:24:18
    |
 LL |     let _t: u8 = '€';
    |             --   ^^^ expected `u8`, found `char`
    |             |
    |             expected due to this
 
-error: aborting due to 3 previous errors
+error[E0308]: mismatched types
+  --> $DIR/type-mismatch-byte-literal.rs:28:9
+   |
+LL |     foo('\u{1f980}');
+   |     --- ^^^^^^^^^^^ expected `u8`, found `char`
+   |     |
+   |     arguments to this function are incorrect
+   |
+note: function defined here
+  --> $DIR/type-mismatch-byte-literal.rs:4:4
+   |
+LL | fn foo(_t: u8) {}
+   |    ^^^ ------
+
+error: aborting due to 6 previous errors
 
 For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/traits/negative-impls/negated-auto-traits-error.stderr b/tests/ui/traits/negative-impls/negated-auto-traits-error.stderr
index ce690b749f5..b680ce7f990 100644
--- a/tests/ui/traits/negative-impls/negated-auto-traits-error.stderr
+++ b/tests/ui/traits/negative-impls/negated-auto-traits-error.stderr
@@ -101,10 +101,10 @@ LL | fn is_send<T: Send>(_: T) {}
    |               ^^^^ required by this bound in `is_send`
 
 error[E0277]: `main::TestType` cannot be sent between threads safely
-  --> $DIR/negated-auto-traits-error.rs:66:13
+  --> $DIR/negated-auto-traits-error.rs:66:20
    |
 LL |     is_sync(Outer2(TestType));
-   |     ------- ^^^^^^^^^^^^^^^^ `main::TestType` cannot be sent between threads safely
+   |     -------        ^^^^^^^^ `main::TestType` cannot be sent between threads safely
    |     |
    |     required by a bound introduced by this call
    |
diff --git a/tests/ui/traits/new-solver/pointer-like.rs b/tests/ui/traits/new-solver/pointer-like.rs
new file mode 100644
index 00000000000..3745a075e6a
--- /dev/null
+++ b/tests/ui/traits/new-solver/pointer-like.rs
@@ -0,0 +1,14 @@
+// compile-flags: -Ztrait-solver=next
+
+#![feature(pointer_like_trait)]
+
+use std::marker::PointerLike;
+
+fn require_(_: impl PointerLike) {}
+
+fn main() {
+    require_(1usize);
+    require_(1u16);
+    //~^ ERROR `u16` needs to have the same alignment and size as a pointer
+    require_(&1i16);
+}
diff --git a/tests/ui/traits/new-solver/pointer-like.stderr b/tests/ui/traits/new-solver/pointer-like.stderr
new file mode 100644
index 00000000000..f695e64187d
--- /dev/null
+++ b/tests/ui/traits/new-solver/pointer-like.stderr
@@ -0,0 +1,24 @@
+error[E0277]: `u16` needs to have the same alignment and size as a pointer
+  --> $DIR/pointer-like.rs:11:14
+   |
+LL |     require_(1u16);
+   |     -------- ^^^^ the trait `PointerLike` is not implemented for `u16`
+   |     |
+   |     required by a bound introduced by this call
+   |
+   = note: the trait bound `u16: PointerLike` is not satisfied
+note: required by a bound in `require_`
+  --> $DIR/pointer-like.rs:7:21
+   |
+LL | fn require_(_: impl PointerLike) {}
+   |                     ^^^^^^^^^^^ required by this bound in `require_`
+help: consider borrowing here
+   |
+LL |     require_(&1u16);
+   |              +
+LL |     require_(&mut 1u16);
+   |              ++++
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/traits/new-solver/pointer-sized.rs b/tests/ui/traits/new-solver/pointer-sized.rs
deleted file mode 100644
index 15681cd132e..00000000000
--- a/tests/ui/traits/new-solver/pointer-sized.rs
+++ /dev/null
@@ -1,12 +0,0 @@
-#![feature(pointer_sized_trait)]
-
-use std::marker::PointerSized;
-
-fn require_pointer_sized(_: impl PointerSized) {}
-
-fn main() {
-    require_pointer_sized(1usize);
-    require_pointer_sized(1u16);
-    //~^ ERROR `u16` needs to be a pointer-sized type
-    require_pointer_sized(&1i16);
-}
diff --git a/tests/ui/traits/new-solver/pointer-sized.stderr b/tests/ui/traits/new-solver/pointer-sized.stderr
deleted file mode 100644
index b250b1331bb..00000000000
--- a/tests/ui/traits/new-solver/pointer-sized.stderr
+++ /dev/null
@@ -1,24 +0,0 @@
-error[E0277]: `u16` needs to be a pointer-sized type
-  --> $DIR/pointer-sized.rs:9:27
-   |
-LL |     require_pointer_sized(1u16);
-   |     --------------------- ^^^^ the trait `PointerSized` is not implemented for `u16`
-   |     |
-   |     required by a bound introduced by this call
-   |
-   = note: the trait bound `u16: PointerSized` is not satisfied
-note: required by a bound in `require_pointer_sized`
-  --> $DIR/pointer-sized.rs:5:34
-   |
-LL | fn require_pointer_sized(_: impl PointerSized) {}
-   |                                  ^^^^^^^^^^^^ required by this bound in `require_pointer_sized`
-help: consider borrowing here
-   |
-LL |     require_pointer_sized(&1u16);
-   |                           +
-LL |     require_pointer_sized(&mut 1u16);
-   |                           ++++
-
-error: aborting due to previous error
-
-For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/traits/new-solver/provisional-result-done.rs b/tests/ui/traits/new-solver/provisional-result-done.rs
new file mode 100644
index 00000000000..a3d97927bad
--- /dev/null
+++ b/tests/ui/traits/new-solver/provisional-result-done.rs
@@ -0,0 +1,37 @@
+// known-bug: unknown
+// compile-flags: -Ztrait-solver=next
+// failure-status: 101
+// normalize-stderr-test "note: .*\n\n" -> ""
+// normalize-stderr-test "thread 'rustc' panicked.*\n" -> ""
+// rustc-env:RUST_BACKTRACE=0
+
+// This tests checks that we update results in the provisional cache when
+// we pop a goal from the stack.
+#![feature(auto_traits)]
+auto trait Coinductive {}
+struct Foo<T>(T);
+struct Bar<T>(T);
+
+impl<T> Coinductive for Foo<T>
+where
+    Bar<T>: Coinductive
+{}
+
+impl<T> Coinductive for Bar<T>
+where
+    Foo<T>: Coinductive,
+    Bar<T>: ConstrainInfer,
+{}
+
+trait ConstrainInfer {}
+impl ConstrainInfer for Bar<u8> {}
+impl ConstrainInfer for Foo<u16> {}
+
+fn impls<T: Coinductive>() -> T { todo!() }
+
+fn constrain<T: ConstrainInfer>(_: T) {}
+
+fn main() {
+    // This should constrain `_` to `u8`.
+    impls::<Foo<_>>();
+}
diff --git a/tests/ui/traits/new-solver/provisional-result-done.stderr b/tests/ui/traits/new-solver/provisional-result-done.stderr
new file mode 100644
index 00000000000..ffc92b81f08
--- /dev/null
+++ b/tests/ui/traits/new-solver/provisional-result-done.stderr
@@ -0,0 +1,6 @@
+error: the compiler unexpectedly panicked. this is a bug.
+
+query stack during panic:
+#0 [check_well_formed] checking that `<impl at $DIR/provisional-result-done.rs:20:1: 20:31>` is well-formed
+#1 [check_mod_type_wf] checking that types are well-formed in top-level module
+end of query stack
diff --git a/tests/ui/treat-err-as-bug/delay_span_bug.stderr b/tests/ui/treat-err-as-bug/delay_span_bug.stderr
index e9457c8faff..22c6175048a 100644
--- a/tests/ui/treat-err-as-bug/delay_span_bug.stderr
+++ b/tests/ui/treat-err-as-bug/delay_span_bug.stderr
@@ -4,7 +4,7 @@ error: internal compiler error: delayed span bug triggered by #[rustc_error(dela
 LL | fn main() {}
    | ^^^^^^^^^
 
-error: internal compiler error: unexpected panic
+error: the compiler unexpectedly panicked. this is a bug.
 
 query stack during panic:
 #0 [trigger_delay_span_bug] triggering a delay span bug
diff --git a/tests/ui/treat-err-as-bug/err.stderr b/tests/ui/treat-err-as-bug/err.stderr
index 8f67571c299..3a56445a26b 100644
--- a/tests/ui/treat-err-as-bug/err.stderr
+++ b/tests/ui/treat-err-as-bug/err.stderr
@@ -4,7 +4,7 @@ error[E0080]: could not evaluate static initializer
 LL | pub static C: u32 = 0 - 1;
    |                     ^^^^^ attempt to compute `0_u32 - 1_u32`, which would overflow
 
-error: internal compiler error: unexpected panic
+error: the compiler unexpectedly panicked. this is a bug.
 
 query stack during panic:
 #0 [eval_to_allocation_raw] const-evaluating + checking `C`
diff --git a/tests/ui/typeck/issue-107775.rs b/tests/ui/typeck/issue-107775.rs
new file mode 100644
index 00000000000..6fbac2ee975
--- /dev/null
+++ b/tests/ui/typeck/issue-107775.rs
@@ -0,0 +1,40 @@
+// edition: 2021
+
+use std::collections::HashMap;
+use std::future::Future;
+use std::pin::Pin;
+
+pub trait Trait {
+    fn do_something<'async_trait>(byte: u8)
+    ->
+        Pin<Box<dyn Future<Output = ()> +
+        Send + 'async_trait>>;
+}
+
+pub struct Struct;
+
+impl Trait for Struct {
+    fn do_something<'async_trait>(byte: u8)
+        ->
+            Pin<Box<dyn Future<Output = ()> +
+            Send + 'async_trait>> {
+        Box::pin(
+
+            async move { let byte = byte; let _: () = {}; })
+    }
+}
+
+pub struct Map {
+    map: HashMap<u16, fn(u8) -> Pin<Box<dyn Future<Output = ()> + Send>>>,
+}
+
+impl Map {
+    pub fn new() -> Self {
+        let mut map = HashMap::new();
+        map.insert(1, Struct::do_something);
+        Self { map }
+        //~^ ERROR mismatched types
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/typeck/issue-107775.stderr b/tests/ui/typeck/issue-107775.stderr
new file mode 100644
index 00000000000..9ee9c022c6e
--- /dev/null
+++ b/tests/ui/typeck/issue-107775.stderr
@@ -0,0 +1,16 @@
+error[E0308]: mismatched types
+  --> $DIR/issue-107775.rs:35:16
+   |
+LL |         map.insert(1, Struct::do_something);
+   |                    -  -------------------- this is of type `fn(u8) -> Pin<Box<dyn Future<Output = ()> + Send>> {<Struct as Trait>::do_something::<'_>}`, which causes `map` to be inferred as `HashMap<{integer}, fn(u8) -> Pin<Box<dyn Future<Output = ()> + Send>> {<Struct as Trait>::do_something::<'_>}>`
+   |                    |
+   |                    this is of type `{integer}`, which causes `map` to be inferred as `HashMap<{integer}, fn(u8) -> Pin<Box<dyn Future<Output = ()> + Send>> {<Struct as Trait>::do_something::<'_>}>`
+LL |         Self { map }
+   |                ^^^ expected `HashMap<u16, fn(u8) -> Pin<...>>`, found `HashMap<{integer}, ...>`
+   |
+   = note: expected struct `HashMap<u16, fn(_) -> Pin<Box<(dyn Future<Output = ()> + Send + 'static)>>>`
+              found struct `HashMap<{integer}, fn(_) -> Pin<Box<dyn Future<Output = ()> + Send>> {<Struct as Trait>::do_something::<'_>}>`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/typeck/issue-90027-async-fn-return-suggestion.rs b/tests/ui/typeck/issue-90027-async-fn-return-suggestion.rs
new file mode 100644
index 00000000000..8ccb15ca48a
--- /dev/null
+++ b/tests/ui/typeck/issue-90027-async-fn-return-suggestion.rs
@@ -0,0 +1,21 @@
+// edition:2018
+
+async fn hello() { //~ HELP try adding a return type
+    0
+    //~^ ERROR [E0308]
+}
+
+async fn world() -> () {
+    0
+    //~^ ERROR [E0308]
+}
+
+async fn suggest_await_in_async_fn_return() {
+    hello()
+    //~^ ERROR mismatched types [E0308]
+    //~| HELP consider `await`ing on the `Future`
+    //~| HELP consider using a semicolon here
+    //~| SUGGESTION .await
+}
+
+fn main() {}
diff --git a/tests/ui/typeck/issue-90027-async-fn-return-suggestion.stderr b/tests/ui/typeck/issue-90027-async-fn-return-suggestion.stderr
new file mode 100644
index 00000000000..6a1a9f45bc6
--- /dev/null
+++ b/tests/ui/typeck/issue-90027-async-fn-return-suggestion.stderr
@@ -0,0 +1,36 @@
+error[E0308]: mismatched types
+  --> $DIR/issue-90027-async-fn-return-suggestion.rs:4:5
+   |
+LL | async fn hello() {
+   |                  - help: try adding a return type: `-> i32`
+LL |     0
+   |     ^ expected `()`, found integer
+
+error[E0308]: mismatched types
+  --> $DIR/issue-90027-async-fn-return-suggestion.rs:9:5
+   |
+LL | async fn world() -> () {
+   |                     -- expected `()` because of return type
+LL |     0
+   |     ^ expected `()`, found integer
+
+error[E0308]: mismatched types
+  --> $DIR/issue-90027-async-fn-return-suggestion.rs:14:5
+   |
+LL |     hello()
+   |     ^^^^^^^ expected `()`, found opaque type
+   |
+   = note: expected unit type `()`
+            found opaque type `impl Future<Output = ()>`
+help: consider `await`ing on the `Future`
+   |
+LL |     hello().await
+   |            ++++++
+help: consider using a semicolon here
+   |
+LL |     hello();
+   |            +
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/union/projection-as-union-type-error-2.rs b/tests/ui/union/projection-as-union-type-error-2.rs
new file mode 100644
index 00000000000..b88167b3b54
--- /dev/null
+++ b/tests/ui/union/projection-as-union-type-error-2.rs
@@ -0,0 +1,20 @@
+// Test to ensure that there is no ICE when normalizing a projection
+// which is invalid (from <https://github.com/rust-lang/rust/pull/106938>).
+
+#![crate_type = "lib"]
+
+trait Identity {
+    type Identity;
+}
+trait NotImplemented {}
+
+impl<T: NotImplemented> Identity for T {
+    type Identity = Self;
+}
+
+type Foo = u8;
+
+union Bar {
+    a: <Foo as Identity>::Identity, //~ ERROR
+    b: u8,
+}
diff --git a/tests/ui/union/projection-as-union-type-error-2.stderr b/tests/ui/union/projection-as-union-type-error-2.stderr
new file mode 100644
index 00000000000..bab226f271d
--- /dev/null
+++ b/tests/ui/union/projection-as-union-type-error-2.stderr
@@ -0,0 +1,17 @@
+error[E0277]: the trait bound `u8: NotImplemented` is not satisfied
+  --> $DIR/projection-as-union-type-error-2.rs:18:8
+   |
+LL |     a: <Foo as Identity>::Identity,
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `NotImplemented` is not implemented for `u8`
+   |
+note: required for `u8` to implement `Identity`
+  --> $DIR/projection-as-union-type-error-2.rs:11:25
+   |
+LL | impl<T: NotImplemented> Identity for T {
+   |         --------------  ^^^^^^^^     ^
+   |         |
+   |         unsatisfied trait bound introduced here
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/union/projection-as-union-type-error.rs b/tests/ui/union/projection-as-union-type-error.rs
new file mode 100644
index 00000000000..17091c35fb2
--- /dev/null
+++ b/tests/ui/union/projection-as-union-type-error.rs
@@ -0,0 +1,15 @@
+// Test to ensure that there is no ICE when normalizing a projection
+// which is invalid (from <https://github.com/rust-lang/rust/pull/106938>).
+
+#![crate_type = "lib"]
+
+pub trait Identity {
+    type Identity;
+}
+
+pub type Foo = u8;
+
+pub union Bar {
+    a:  <Foo as Identity>::Identity, //~ ERROR
+    b: u8,
+}
diff --git a/tests/ui/union/projection-as-union-type-error.stderr b/tests/ui/union/projection-as-union-type-error.stderr
new file mode 100644
index 00000000000..e4fbe9603ad
--- /dev/null
+++ b/tests/ui/union/projection-as-union-type-error.stderr
@@ -0,0 +1,9 @@
+error[E0277]: the trait bound `u8: Identity` is not satisfied
+  --> $DIR/projection-as-union-type-error.rs:13:9
+   |
+LL |     a:  <Foo as Identity>::Identity,
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Identity` is not implemented for `u8`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/union/projection-as-union-type.rs b/tests/ui/union/projection-as-union-type.rs
new file mode 100644
index 00000000000..143434c96f8
--- /dev/null
+++ b/tests/ui/union/projection-as-union-type.rs
@@ -0,0 +1,19 @@
+// Ensures that we can use projections as union field's type.
+// check-pass
+
+#![crate_type = "lib"]
+
+pub trait Identity {
+    type Identity;
+}
+
+impl<T> Identity for T {
+    type Identity = Self;
+}
+
+pub type Foo = u8;
+
+pub union Bar {
+    pub a: <Foo as Identity>::Identity,
+    pub b: u8,
+}
diff --git a/tests/ui/unpretty/ast-const-trait-bound.rs b/tests/ui/unpretty/ast-const-trait-bound.rs
new file mode 100644
index 00000000000..dbcba7871ec
--- /dev/null
+++ b/tests/ui/unpretty/ast-const-trait-bound.rs
@@ -0,0 +1,4 @@
+// compile-flags: -Zunpretty=normal
+// check-pass
+
+fn foo() where T: ~const Bar {}
diff --git a/tests/ui/unpretty/ast-const-trait-bound.stdout b/tests/ui/unpretty/ast-const-trait-bound.stdout
new file mode 100644
index 00000000000..dbcba7871ec
--- /dev/null
+++ b/tests/ui/unpretty/ast-const-trait-bound.stdout
@@ -0,0 +1,4 @@
+// compile-flags: -Zunpretty=normal
+// check-pass
+
+fn foo() where T: ~const Bar {}