Remove unneeded field from `SwitchTargets`

131 files changed, 304 insertions, 388 deletions

diff --git a/compiler/rustc_borrowck/src/invalidation.rs b/compiler/rustc_borrowck/src/invalidation.rs
index f66a7ab3c03..6fd9290058c 100644
--- a/compiler/rustc_borrowck/src/invalidation.rs
+++ b/compiler/rustc_borrowck/src/invalidation.rs
@@ -106,7 +106,7 @@ impl<'cx, 'tcx> Visitor<'tcx> for InvalidationGenerator<'cx, 'tcx> {
         self.check_activations(location);
 
         match &terminator.kind {
-            TerminatorKind::SwitchInt { discr, switch_ty: _, targets: _ } => {
+            TerminatorKind::SwitchInt { discr, targets: _ } => {
                 self.consume_operand(location, discr);
             }
             TerminatorKind::Drop { place: drop_place, target: _, unwind: _ } => {
diff --git a/compiler/rustc_borrowck/src/lib.rs b/compiler/rustc_borrowck/src/lib.rs
index 74b4e4a0cab..5289de9b0ab 100644
--- a/compiler/rustc_borrowck/src/lib.rs
+++ b/compiler/rustc_borrowck/src/lib.rs
@@ -644,7 +644,7 @@ impl<'cx, 'tcx> rustc_mir_dataflow::ResultsVisitor<'cx, 'tcx> for MirBorrowckCtx
         self.check_activations(loc, span, flow_state);
 
         match &term.kind {
-            TerminatorKind::SwitchInt { discr, switch_ty: _, targets: _ } => {
+            TerminatorKind::SwitchInt { discr, targets: _ } => {
                 self.consume_operand(loc, (discr, span), flow_state);
             }
             TerminatorKind::Drop { place, target: _, unwind: _ } => {
diff --git a/compiler/rustc_borrowck/src/type_check/mod.rs b/compiler/rustc_borrowck/src/type_check/mod.rs
index 6d4ec6b726e..814bc275019 100644
--- a/compiler/rustc_borrowck/src/type_check/mod.rs
+++ b/compiler/rustc_borrowck/src/type_check/mod.rs
@@ -1360,25 +1360,10 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
                     );
                 }
             }
-            TerminatorKind::SwitchInt { discr, switch_ty, .. } => {
+            TerminatorKind::SwitchInt { discr, .. } => {
                 self.check_operand(discr, term_location);
 
-                let discr_ty = discr.ty(body, tcx);
-                if let Err(terr) = self.sub_types(
-                    discr_ty,
-                    *switch_ty,
-                    term_location.to_locations(),
-                    ConstraintCategory::Assignment,
-                ) {
-                    span_mirbug!(
-                        self,
-                        term,
-                        "bad SwitchInt ({:?} on {:?}): {:?}",
-                        switch_ty,
-                        discr_ty,
-                        terr
-                    );
-                }
+                let switch_ty = discr.ty(body, tcx);
                 if !switch_ty.is_integral() && !switch_ty.is_char() && !switch_ty.is_bool() {
                     span_mirbug!(self, term, "bad SwitchInt discr ty {:?}", switch_ty);
                 }
diff --git a/compiler/rustc_codegen_cranelift/src/base.rs b/compiler/rustc_codegen_cranelift/src/base.rs
index 1db44502742..06813d7ec95 100644
--- a/compiler/rustc_codegen_cranelift/src/base.rs
+++ b/compiler/rustc_codegen_cranelift/src/base.rs
@@ -372,8 +372,10 @@ fn codegen_fn_body(fx: &mut FunctionCx<'_, '_, '_>, start_block: Block) {
                 }
             }
 
-            TerminatorKind::SwitchInt { discr, switch_ty, targets } => {
-                let discr = codegen_operand(fx, discr).load_scalar(fx);
+            TerminatorKind::SwitchInt { discr, targets } => {
+                let discr = codegen_operand(fx, discr);
+                let switch_ty = discr.layout().ty;
+                let discr = discr.load_scalar(fx);
 
                 let use_bool_opt = switch_ty.kind() == fx.tcx.types.bool.kind()
                     || (targets.iter().count() == 1 && targets.iter().next().unwrap().0 == 0);
diff --git a/compiler/rustc_codegen_ssa/src/mir/block.rs b/compiler/rustc_codegen_ssa/src/mir/block.rs
index 03d833fbba8..f3f5ddb52d6 100644
--- a/compiler/rustc_codegen_ssa/src/mir/block.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/block.rs
@@ -307,12 +307,10 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
         helper: TerminatorCodegenHelper<'tcx>,
         bx: &mut Bx,
         discr: &mir::Operand<'tcx>,
-        switch_ty: Ty<'tcx>,
         targets: &SwitchTargets,
     ) {
         let discr = self.codegen_operand(bx, &discr);
-        // `switch_ty` is redundant, sanity-check that.
-        assert_eq!(discr.layout.ty, switch_ty);
+        let switch_ty = discr.layout.ty;
         let mut target_iter = targets.iter();
         if target_iter.len() == 1 {
             // If there are two targets (one conditional, one fallback), emit `br` instead of
@@ -1293,8 +1291,8 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                 helper.funclet_br(self, bx, target, mergeable_succ())
             }
 
-            mir::TerminatorKind::SwitchInt { ref discr, switch_ty, ref targets } => {
-                self.codegen_switchint_terminator(helper, bx, discr, switch_ty, targets);
+            mir::TerminatorKind::SwitchInt { ref discr, ref targets } => {
+                self.codegen_switchint_terminator(helper, bx, discr, targets);
                 MergingSucc::False
             }
 
diff --git a/compiler/rustc_const_eval/src/interpret/terminator.rs b/compiler/rustc_const_eval/src/interpret/terminator.rs
index 57e40e168fa..0e7ffcdffc9 100644
--- a/compiler/rustc_const_eval/src/interpret/terminator.rs
+++ b/compiler/rustc_const_eval/src/interpret/terminator.rs
@@ -29,10 +29,9 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
 
             Goto { target } => self.go_to_block(target),
 
-            SwitchInt { ref discr, ref targets, switch_ty } => {
+            SwitchInt { ref discr, ref targets } => {
                 let discr = self.read_immediate(&self.eval_operand(discr, None)?)?;
                 trace!("SwitchInt({:?})", *discr);
-                assert_eq!(discr.layout.ty, switch_ty);
 
                 // Branch to the `otherwise` case by default, if no match is found.
                 let mut target_block = targets.otherwise();
diff --git a/compiler/rustc_const_eval/src/transform/validate.rs b/compiler/rustc_const_eval/src/transform/validate.rs
index 5c9263dc5e3..64318f5f54d 100644
--- a/compiler/rustc_const_eval/src/transform/validate.rs
+++ b/compiler/rustc_const_eval/src/transform/validate.rs
@@ -686,17 +686,8 @@ impl<'a, 'tcx> Visitor<'tcx> for TypeChecker<'a, 'tcx> {
             TerminatorKind::Goto { target } => {
                 self.check_edge(location, *target, EdgeKind::Normal);
             }
-            TerminatorKind::SwitchInt { targets, switch_ty, discr } => {
-                let ty = discr.ty(&self.body.local_decls, self.tcx);
-                if ty != *switch_ty {
-                    self.fail(
-                        location,
-                        format!(
-                            "encountered `SwitchInt` terminator with type mismatch: {:?} != {:?}",
-                            ty, switch_ty,
-                        ),
-                    );
-                }
+            TerminatorKind::SwitchInt { targets, discr } => {
+                let switch_ty = discr.ty(&self.body.local_decls, self.tcx);
 
                 let target_width = self.tcx.sess.target.pointer_width;
 
diff --git a/compiler/rustc_middle/src/mir/syntax.rs b/compiler/rustc_middle/src/mir/syntax.rs
index 5ba053820e0..99e59c770d7 100644
--- a/compiler/rustc_middle/src/mir/syntax.rs
+++ b/compiler/rustc_middle/src/mir/syntax.rs
@@ -526,12 +526,6 @@ pub enum TerminatorKind<'tcx> {
     SwitchInt {
         /// The discriminant value being tested.
         discr: Operand<'tcx>,
-
-        /// The type of value being tested.
-        /// This is always the same as the type of `discr`.
-        /// FIXME: remove this redundant information. Currently, it is relied on by pretty-printing.
-        switch_ty: Ty<'tcx>,
-
         targets: SwitchTargets,
     },
 
diff --git a/compiler/rustc_middle/src/mir/terminator.rs b/compiler/rustc_middle/src/mir/terminator.rs
index 4ea333cff7d..013a1bccd3b 100644
--- a/compiler/rustc_middle/src/mir/terminator.rs
+++ b/compiler/rustc_middle/src/mir/terminator.rs
@@ -1,6 +1,3 @@
-use crate::mir;
-use crate::mir::interpret::Scalar;
-use crate::ty::{self, Ty, TyCtxt};
 use smallvec::{smallvec, SmallVec};
 
 use super::{BasicBlock, InlineAsmOperand, Operand, SourceInfo, TerminatorKind};
@@ -131,17 +128,8 @@ impl<'tcx> Terminator<'tcx> {
 }
 
 impl<'tcx> TerminatorKind<'tcx> {
-    pub fn if_(
-        tcx: TyCtxt<'tcx>,
-        cond: Operand<'tcx>,
-        t: BasicBlock,
-        f: BasicBlock,
-    ) -> TerminatorKind<'tcx> {
-        TerminatorKind::SwitchInt {
-            discr: cond,
-            switch_ty: tcx.types.bool,
-            targets: SwitchTargets::static_if(0, f, t),
-        }
+    pub fn if_(cond: Operand<'tcx>, t: BasicBlock, f: BasicBlock) -> TerminatorKind<'tcx> {
+        TerminatorKind::SwitchInt { discr: cond, targets: SwitchTargets::static_if(0, f, t) }
     }
 
     pub fn successors(&self) -> Successors<'_> {
@@ -264,11 +252,9 @@ impl<'tcx> TerminatorKind<'tcx> {
         }
     }
 
-    pub fn as_switch(&self) -> Option<(&Operand<'tcx>, Ty<'tcx>, &SwitchTargets)> {
+    pub fn as_switch(&self) -> Option<(&Operand<'tcx>, &SwitchTargets)> {
         match self {
-            TerminatorKind::SwitchInt { discr, switch_ty, targets } => {
-                Some((discr, *switch_ty, targets))
-            }
+            TerminatorKind::SwitchInt { discr, targets } => Some((discr, targets)),
             _ => None,
         }
     }
@@ -403,21 +389,12 @@ impl<'tcx> TerminatorKind<'tcx> {
         match *self {
             Return | Resume | Abort | Unreachable | GeneratorDrop => vec![],
             Goto { .. } => vec!["".into()],
-            SwitchInt { ref targets, switch_ty, .. } => ty::tls::with(|tcx| {
-                let param_env = ty::ParamEnv::empty();
-                let switch_ty = tcx.lift(switch_ty).unwrap();
-                let size = tcx.layout_of(param_env.and(switch_ty)).unwrap().size;
-                targets
-                    .values
-                    .iter()
-                    .map(|&u| {
-                        mir::ConstantKind::from_scalar(tcx, Scalar::from_uint(u, size), switch_ty)
-                            .to_string()
-                            .into()
-                    })
-                    .chain(iter::once("otherwise".into()))
-                    .collect()
-            }),
+            SwitchInt { ref targets, .. } => targets
+                .values
+                .iter()
+                .map(|&u| Cow::Owned(u.to_string()))
+                .chain(iter::once("otherwise".into()))
+                .collect(),
             Call { target: Some(_), cleanup: Some(_), .. } => {
                 vec!["return".into(), "unwind".into()]
             }
diff --git a/compiler/rustc_middle/src/mir/visit.rs b/compiler/rustc_middle/src/mir/visit.rs
index b21f50ae5ea..2ee3f551529 100644
--- a/compiler/rustc_middle/src/mir/visit.rs
+++ b/compiler/rustc_middle/src/mir/visit.rs
@@ -477,11 +477,9 @@ macro_rules! make_mir_visitor {
 
                     TerminatorKind::SwitchInt {
                         discr,
-                        switch_ty,
                         targets: _
                     } => {
                         self.visit_operand(discr, location);
-                        self.visit_ty($(& $mutability)? *switch_ty, TyContext::Location(location));
                     }
 
                     TerminatorKind::Drop {
diff --git a/compiler/rustc_mir_build/src/build/expr/into.rs b/compiler/rustc_mir_build/src/build/expr/into.rs
index 218a26e6279..38b1fa91d0a 100644
--- a/compiler/rustc_mir_build/src/build/expr/into.rs
+++ b/compiler/rustc_mir_build/src/build/expr/into.rs
@@ -183,7 +183,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
                     LogicalOp::And => (else_block, shortcircuit_block),
                     LogicalOp::Or => (shortcircuit_block, else_block),
                 };
-                let term = TerminatorKind::if_(this.tcx, lhs, blocks.0, blocks.1);
+                let term = TerminatorKind::if_(lhs, blocks.0, blocks.1);
                 this.cfg.terminate(block, source_info, term);
 
                 this.cfg.push_assign_constant(
diff --git a/compiler/rustc_mir_build/src/build/matches/mod.rs b/compiler/rustc_mir_build/src/build/matches/mod.rs
index 691cbee2c73..e90db2c7d05 100644
--- a/compiler/rustc_mir_build/src/build/matches/mod.rs
+++ b/compiler/rustc_mir_build/src/build/matches/mod.rs
@@ -95,7 +95,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
 
                 let then_block = this.cfg.start_new_block();
                 let else_block = this.cfg.start_new_block();
-                let term = TerminatorKind::if_(this.tcx, operand, then_block, else_block);
+                let term = TerminatorKind::if_(operand, then_block, else_block);
 
                 let source_info = this.source_info(expr_span);
                 this.cfg.terminate(block, source_info, term);
diff --git a/compiler/rustc_mir_build/src/build/matches/test.rs b/compiler/rustc_mir_build/src/build/matches/test.rs
index 58513bde2aa..6d5a98342d2 100644
--- a/compiler/rustc_mir_build/src/build/matches/test.rs
+++ b/compiler/rustc_mir_build/src/build/matches/test.rs
@@ -203,7 +203,6 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
                     self.source_info(match_start_span),
                     TerminatorKind::SwitchInt {
                         discr: Operand::Move(discr),
-                        switch_ty: discr_ty,
                         targets: switch_targets,
                     },
                 );
@@ -221,7 +220,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
                         0 => (second_bb, first_bb),
                         v => span_bug!(test.span, "expected boolean value but got {:?}", v),
                     };
-                    TerminatorKind::if_(self.tcx, Operand::Copy(place), true_bb, false_bb)
+                    TerminatorKind::if_(Operand::Copy(place), true_bb, false_bb)
                 } else {
                     // The switch may be inexhaustive so we have a catch all block
                     debug_assert_eq!(options.len() + 1, target_blocks.len());
@@ -232,7 +231,6 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
                     );
                     TerminatorKind::SwitchInt {
                         discr: Operand::Copy(place),
-                        switch_ty,
                         targets: switch_targets,
                     }
                 };
@@ -378,7 +376,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
         self.cfg.terminate(
             block,
             source_info,
-            TerminatorKind::if_(self.tcx, Operand::Move(result), success_block, fail_block),
+            TerminatorKind::if_(Operand::Move(result), success_block, fail_block),
         );
     }
 
@@ -482,7 +480,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
         self.cfg.terminate(
             eq_block,
             source_info,
-            TerminatorKind::if_(self.tcx, Operand::Move(eq_result), success_block, fail_block),
+            TerminatorKind::if_(Operand::Move(eq_result), success_block, fail_block),
         );
     }
 
diff --git a/compiler/rustc_mir_dataflow/src/elaborate_drops.rs b/compiler/rustc_mir_dataflow/src/elaborate_drops.rs
index ce87a1916b4..8610792c0eb 100644
--- a/compiler/rustc_mir_dataflow/src/elaborate_drops.rs
+++ b/compiler/rustc_mir_dataflow/src/elaborate_drops.rs
@@ -596,7 +596,6 @@ where
                 source_info: self.source_info,
                 kind: TerminatorKind::SwitchInt {
                     discr: Operand::Move(discr),
-                    switch_ty: discr_ty,
                     targets: SwitchTargets::new(
                         values.iter().copied().zip(blocks.iter().copied()),
                         *blocks.last().unwrap(),
@@ -716,7 +715,7 @@ where
             is_cleanup: unwind.is_cleanup(),
             terminator: Some(Terminator {
                 source_info: self.source_info,
-                kind: TerminatorKind::if_(tcx, move_(can_go), succ, drop_block),
+                kind: TerminatorKind::if_(move_(can_go), succ, drop_block),
             }),
         };
         let loop_block = self.elaborator.patch().new_block(loop_block);
@@ -781,7 +780,6 @@ where
                 source_info: self.source_info,
                 kind: TerminatorKind::SwitchInt {
                     discr: move_(elem_size),
-                    switch_ty: tcx.types.usize,
                     targets: SwitchTargets::static_if(
                         0,
                         self.drop_loop_pair(ety, false, len),
@@ -1021,7 +1019,7 @@ where
             DropStyle::Static => on_set,
             DropStyle::Conditional | DropStyle::Open => {
                 let flag = self.elaborator.get_drop_flag(self.path).unwrap();
-                let term = TerminatorKind::if_(self.tcx(), flag, on_set, on_unset);
+                let term = TerminatorKind::if_(flag, on_set, on_unset);
                 self.new_block(unwind, term)
             }
         }
diff --git a/compiler/rustc_mir_dataflow/src/framework/direction.rs b/compiler/rustc_mir_dataflow/src/framework/direction.rs
index 5c77f3ea395..5ff6b9e7e69 100644
--- a/compiler/rustc_mir_dataflow/src/framework/direction.rs
+++ b/compiler/rustc_mir_dataflow/src/framework/direction.rs
@@ -261,7 +261,7 @@ impl Direction for Backward {
                     propagate(pred, &tmp);
                 }
 
-                mir::TerminatorKind::SwitchInt { targets: _, ref discr, switch_ty: _ } => {
+                mir::TerminatorKind::SwitchInt { targets: _, ref discr } => {
                     let mut applier = BackwardSwitchIntEdgeEffectsApplier {
                         body,
                         pred,
@@ -577,7 +577,7 @@ impl Direction for Forward {
                 }
             }
 
-            SwitchInt { ref targets, ref discr, switch_ty: _ } => {
+            SwitchInt { ref targets, ref discr } => {
                 let mut applier = ForwardSwitchIntEdgeEffectsApplier {
                     exit_state,
                     targets,
diff --git a/compiler/rustc_mir_transform/src/const_goto.rs b/compiler/rustc_mir_transform/src/const_goto.rs
index 0a305a40209..40eefda4f07 100644
--- a/compiler/rustc_mir_transform/src/const_goto.rs
+++ b/compiler/rustc_mir_transform/src/const_goto.rs
@@ -82,8 +82,9 @@ impl<'tcx> Visitor<'tcx> for ConstGotoOptimizationFinder<'_, 'tcx> {
                 }
 
                 let target_bb_terminator = target_bb.terminator();
-                let (discr, switch_ty, targets) = target_bb_terminator.kind.as_switch()?;
+                let (discr, targets) = target_bb_terminator.kind.as_switch()?;
                 if discr.place() == Some(*place) {
+                    let switch_ty = place.ty(self.body.local_decls(), self.tcx).ty;
                     // We now know that the Switch matches on the const place, and it is statementless
                     // Now find which value in the Switch matches the const value.
                     let const_value =
diff --git a/compiler/rustc_mir_transform/src/coverage/tests.rs b/compiler/rustc_mir_transform/src/coverage/tests.rs
index 9c9ed5fa510..eba6a2b34e4 100644
--- a/compiler/rustc_mir_transform/src/coverage/tests.rs
+++ b/compiler/rustc_mir_transform/src/coverage/tests.rs
@@ -37,7 +37,7 @@ use rustc_data_structures::graph::WithSuccessors;
 use rustc_index::vec::{Idx, IndexVec};
 use rustc_middle::mir::coverage::CoverageKind;
 use rustc_middle::mir::*;
-use rustc_middle::ty::{self, Ty, TyCtxt};
+use rustc_middle::ty;
 use rustc_span::{self, BytePos, Pos, Span, DUMMY_SP};
 
 // All `TEMP_BLOCK` targets should be replaced before calling `to_body() -> mir::Body`.
@@ -47,7 +47,6 @@ struct MockBlocks<'tcx> {
     blocks: IndexVec<BasicBlock, BasicBlockData<'tcx>>,
     dummy_place: Place<'tcx>,
     next_local: usize,
-    bool_ty: Ty<'tcx>,
 }
 
 impl<'tcx> MockBlocks<'tcx> {
@@ -56,7 +55,6 @@ impl<'tcx> MockBlocks<'tcx> {
             blocks: IndexVec::new(),
             dummy_place: Place { local: RETURN_PLACE, projection: ty::List::empty() },
             next_local: 0,
-            bool_ty: TyCtxt::BOOL_TY_FOR_UNIT_TESTING,
         }
     }
 
@@ -157,7 +155,6 @@ impl<'tcx> MockBlocks<'tcx> {
     fn switchint(&mut self, some_from_block: Option<BasicBlock>) -> BasicBlock {
         let switchint_kind = TerminatorKind::SwitchInt {
             discr: Operand::Move(Place::from(self.new_temp())),
-            switch_ty: self.bool_ty, // just a dummy value
             targets: SwitchTargets::static_if(0, TEMP_BLOCK, TEMP_BLOCK),
         };
         self.add_block_from(some_from_block, switchint_kind)
diff --git a/compiler/rustc_mir_transform/src/early_otherwise_branch.rs b/compiler/rustc_mir_transform/src/early_otherwise_branch.rs
index 32e738bbcea..8a7b027ddda 100644
--- a/compiler/rustc_mir_transform/src/early_otherwise_branch.rs
+++ b/compiler/rustc_mir_transform/src/early_otherwise_branch.rs
@@ -121,7 +121,6 @@ impl<'tcx> MirPass<'tcx> for EarlyOtherwiseBranch {
 
             let TerminatorKind::SwitchInt {
                 discr: parent_op,
-                switch_ty: parent_ty,
                 targets: parent_targets
             } = &bbs[parent].terminator().kind else {
                 unreachable!()
@@ -132,6 +131,7 @@ impl<'tcx> MirPass<'tcx> for EarlyOtherwiseBranch {
                 Operand::Copy(x) => Operand::Copy(*x),
                 Operand::Constant(x) => Operand::Constant(x.clone()),
             };
+            let parent_ty = parent_op.ty(body.local_decls(), tcx);
             let statements_before = bbs[parent].statements.len();
             let parent_end = Location { block: parent, statement_index: statements_before };
 
@@ -153,7 +153,7 @@ impl<'tcx> MirPass<'tcx> for EarlyOtherwiseBranch {
             // create temp to store inequality comparison between the two discriminants, `_t` in
             // example above
             let nequal = BinOp::Ne;
-            let comp_res_type = nequal.ty(tcx, *parent_ty, opt_data.child_ty);
+            let comp_res_type = nequal.ty(tcx, parent_ty, opt_data.child_ty);
             let comp_temp = patch.new_temp(comp_res_type, opt_data.child_source.span);
             patch.add_statement(parent_end, StatementKind::StorageLive(comp_temp));
 
@@ -181,7 +181,6 @@ impl<'tcx> MirPass<'tcx> for EarlyOtherwiseBranch {
                 kind: TerminatorKind::SwitchInt {
                     // switch on the first discriminant, so we can mark the second one as dead
                     discr: parent_op,
-                    switch_ty: opt_data.child_ty,
                     targets: eq_targets,
                 },
             }));
@@ -193,12 +192,7 @@ impl<'tcx> MirPass<'tcx> for EarlyOtherwiseBranch {
             let false_case = eq_bb;
             patch.patch_terminator(
                 parent,
-                TerminatorKind::if_(
-                    tcx,
-                    Operand::Move(Place::from(comp_temp)),
-                    true_case,
-                    false_case,
-                ),
+                TerminatorKind::if_(Operand::Move(Place::from(comp_temp)), true_case, false_case),
             );
 
             // generate StorageDead for the second_discriminant_temp not in use anymore
@@ -319,11 +313,11 @@ fn evaluate_candidate<'tcx>(
     let bbs = &body.basic_blocks;
     let TerminatorKind::SwitchInt {
         targets,
-        switch_ty: parent_ty,
-        ..
+        discr: parent_discr,
     } = &bbs[parent].terminator().kind else {
         return None
     };
+    let parent_ty = parent_discr.ty(body.local_decls(), tcx);
     let parent_dest = {
         let poss = targets.otherwise();
         // If the fallthrough on the parent is trivially unreachable, we can let the
@@ -339,12 +333,12 @@ fn evaluate_candidate<'tcx>(
     let (_, child) = targets.iter().next()?;
     let child_terminator = &bbs[child].terminator();
     let TerminatorKind::SwitchInt {
-        switch_ty: child_ty,
         targets: child_targets,
-        ..
+        discr: child_discr,
     } = &child_terminator.kind else {
         return None
     };
+    let child_ty = child_discr.ty(body.local_decls(), tcx);
     if child_ty != parent_ty {
         return None;
     }
@@ -372,7 +366,7 @@ fn evaluate_candidate<'tcx>(
     Some(OptimizationData {
         destination,
         child_place: *child_place,
-        child_ty: *child_ty,
+        child_ty,
         child_source: child_terminator.source_info,
     })
 }
diff --git a/compiler/rustc_mir_transform/src/generator.rs b/compiler/rustc_mir_transform/src/generator.rs
index 69f96fe48ea..c08593afe9d 100644
--- a/compiler/rustc_mir_transform/src/generator.rs
+++ b/compiler/rustc_mir_transform/src/generator.rs
@@ -877,11 +877,7 @@ fn insert_switch<'tcx>(
     let (assign, discr) = transform.get_discr(body);
     let switch_targets =
         SwitchTargets::new(cases.iter().map(|(i, bb)| ((*i) as u128, *bb)), default_block);
-    let switch = TerminatorKind::SwitchInt {
-        discr: Operand::Move(discr),
-        switch_ty: transform.discr_ty,
-        targets: switch_targets,
-    };
+    let switch = TerminatorKind::SwitchInt { discr: Operand::Move(discr), targets: switch_targets };
 
     let source_info = SourceInfo::outermost(body.span);
     body.basic_blocks_mut().raw.insert(
diff --git a/compiler/rustc_mir_transform/src/match_branches.rs b/compiler/rustc_mir_transform/src/match_branches.rs
index a0ba69c89b0..ce05db5b762 100644
--- a/compiler/rustc_mir_transform/src/match_branches.rs
+++ b/compiler/rustc_mir_transform/src/match_branches.rs
@@ -55,10 +55,9 @@ impl<'tcx> MirPass<'tcx> for MatchBranchSimplification {
                 continue;
             }
 
-            let (discr, val, switch_ty, first, second) = match bbs[bb_idx].terminator().kind {
+            let (discr, val, first, second) = match bbs[bb_idx].terminator().kind {
                 TerminatorKind::SwitchInt {
                     discr: ref discr @ (Operand::Copy(_) | Operand::Move(_)),
-                    switch_ty,
                     ref targets,
                     ..
                 } if targets.iter().len() == 1 => {
@@ -66,7 +65,7 @@ impl<'tcx> MirPass<'tcx> for MatchBranchSimplification {
                     if target == targets.otherwise() {
                         continue;
                     }
-                    (discr, value, switch_ty, target, targets.otherwise())
+                    (discr, value, target, targets.otherwise())
                 }
                 // Only optimize switch int statements
                 _ => continue,
@@ -105,10 +104,11 @@ impl<'tcx> MirPass<'tcx> for MatchBranchSimplification {
             }
             // Take ownership of items now that we know we can optimize.
             let discr = discr.clone();
+            let discr_ty = discr.ty(&body.local_decls, tcx);
 
             // Introduce a temporary for the discriminant value.
             let source_info = bbs[bb_idx].terminator().source_info;
-            let discr_local = body.local_decls.push(LocalDecl::new(switch_ty, source_info.span));
+            let discr_local = body.local_decls.push(LocalDecl::new(discr_ty, source_info.span));
 
             // We already checked that first and second are different blocks,
             // and bb_idx has a different terminator from both of them.
@@ -130,10 +130,10 @@ impl<'tcx> MirPass<'tcx> for MatchBranchSimplification {
                             (*f).clone()
                         } else {
                             // Different value between blocks. Make value conditional on switch condition.
-                            let size = tcx.layout_of(param_env.and(switch_ty)).unwrap().size;
+                            let size = tcx.layout_of(param_env.and(discr_ty)).unwrap().size;
                             let const_cmp = Operand::const_from_scalar(
                                 tcx,
-                                switch_ty,
+                                discr_ty,
                                 rustc_const_eval::interpret::Scalar::from_uint(val, size),
                                 rustc_span::DUMMY_SP,
                             );
diff --git a/compiler/rustc_mir_transform/src/shim.rs b/compiler/rustc_mir_transform/src/shim.rs
index 16b7dcad17e..f92a0e826dc 100644
--- a/compiler/rustc_mir_transform/src/shim.rs
+++ b/compiler/rustc_mir_transform/src/shim.rs
@@ -548,7 +548,6 @@ impl<'tcx> CloneShimBuilder<'tcx> {
                 statements.push(statement);
                 *kind = TerminatorKind::SwitchInt {
                     discr: Operand::Move(temp),
-                    switch_ty: discr_ty,
                     targets: SwitchTargets::new(cases.into_iter(), unreachable),
                 };
             }
diff --git a/compiler/rustc_mir_transform/src/simplify_branches.rs b/compiler/rustc_mir_transform/src/simplify_branches.rs
index 405ebce4d22..8164b305278 100644
--- a/compiler/rustc_mir_transform/src/simplify_branches.rs
+++ b/compiler/rustc_mir_transform/src/simplify_branches.rs
@@ -24,12 +24,9 @@ impl<'tcx> MirPass<'tcx> for SimplifyConstCondition {
             let terminator = block.terminator_mut();
             terminator.kind = match terminator.kind {
                 TerminatorKind::SwitchInt {
-                    discr: Operand::Constant(ref c),
-                    switch_ty,
-                    ref targets,
-                    ..
+                    discr: Operand::Constant(ref c), ref targets, ..
                 } => {
-                    let constant = c.literal.try_eval_bits(tcx, param_env, switch_ty);
+                    let constant = c.literal.try_eval_bits(tcx, param_env, c.ty());
                     if let Some(constant) = constant {
                         let target = targets.target_for_value(constant);
                         TerminatorKind::Goto { target }
diff --git a/compiler/rustc_mir_transform/src/simplify_comparison_integral.rs b/compiler/rustc_mir_transform/src/simplify_comparison_integral.rs
index 321d8c63b6e..dcad1518eb6 100644
--- a/compiler/rustc_mir_transform/src/simplify_comparison_integral.rs
+++ b/compiler/rustc_mir_transform/src/simplify_comparison_integral.rs
@@ -127,11 +127,8 @@ impl<'tcx> MirPass<'tcx> for SimplifyComparisonIntegral {
             let targets = SwitchTargets::new(iter::once((new_value, bb_cond)), bb_otherwise);
 
             let terminator = bb.terminator_mut();
-            terminator.kind = TerminatorKind::SwitchInt {
-                discr: Operand::Move(opt.to_switch_on),
-                switch_ty: opt.branch_value_ty,
-                targets,
-            };
+            terminator.kind =
+                TerminatorKind::SwitchInt { discr: Operand::Move(opt.to_switch_on), targets };
         }
 
         for (idx, bb_idx) in storage_deads_to_remove {
diff --git a/compiler/rustc_mir_transform/src/unreachable_prop.rs b/compiler/rustc_mir_transform/src/unreachable_prop.rs
index 95fda2eafe8..06deca2fffb 100644
--- a/compiler/rustc_mir_transform/src/unreachable_prop.rs
+++ b/compiler/rustc_mir_transform/src/unreachable_prop.rs
@@ -76,7 +76,7 @@ where
     let terminator = match terminator_kind {
         // This will unconditionally run into an unreachable and is therefore unreachable as well.
         TerminatorKind::Goto { target } if is_unreachable(*target) => TerminatorKind::Unreachable,
-        TerminatorKind::SwitchInt { targets, discr, switch_ty } => {
+        TerminatorKind::SwitchInt { targets, discr } => {
             let otherwise = targets.otherwise();
 
             // If all targets are unreachable, we can be unreachable as well.
@@ -110,11 +110,7 @@ where
                     return None;
                 }
 
-                TerminatorKind::SwitchInt {
-                    discr: discr.clone(),
-                    switch_ty: *switch_ty,
-                    targets: new_targets,
-                }
+                TerminatorKind::SwitchInt { discr: discr.clone(), targets: new_targets }
             } else {
                 // If the otherwise branch is reachable, we don't want to delete any unreachable branches.
                 return None;
diff --git a/src/test/mir-opt/76803_regression.encode.SimplifyBranchSame.diff b/src/test/mir-opt/76803_regression.encode.SimplifyBranchSame.diff
index 57e298625f9..9780332d8bf 100644
--- a/src/test/mir-opt/76803_regression.encode.SimplifyBranchSame.diff
+++ b/src/test/mir-opt/76803_regression.encode.SimplifyBranchSame.diff
@@ -8,7 +8,7 @@
   
       bb0: {
           _2 = discriminant(_1);           // scope 0 at $DIR/76803_regression.rs:+1:11: +1:12
-          switchInt(move _2) -> [0_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/76803_regression.rs:+1:5: +1:12
+          switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/76803_regression.rs:+1:5: +1:12
       }
   
       bb1: {
diff --git a/src/test/mir-opt/bool_compare.opt1.InstCombine.diff b/src/test/mir-opt/bool_compare.opt1.InstCombine.diff
index 9c5a9fa9abb..0af5d82d315 100644
--- a/src/test/mir-opt/bool_compare.opt1.InstCombine.diff
+++ b/src/test/mir-opt/bool_compare.opt1.InstCombine.diff
@@ -14,7 +14,7 @@
 -         _2 = Ne(move _3, const true);    // scope 0 at $DIR/bool_compare.rs:+1:8: +1:17
 +         _2 = Not(move _3);               // scope 0 at $DIR/bool_compare.rs:+1:8: +1:17
           StorageDead(_3);                 // scope 0 at $DIR/bool_compare.rs:+1:16: +1:17
-          switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/bool_compare.rs:+1:8: +1:17
+          switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/bool_compare.rs:+1:8: +1:17
       }
   
       bb1: {
diff --git a/src/test/mir-opt/bool_compare.opt2.InstCombine.diff b/src/test/mir-opt/bool_compare.opt2.InstCombine.diff
index 58c52c4b7d7..f5d1febd991 100644
--- a/src/test/mir-opt/bool_compare.opt2.InstCombine.diff
+++ b/src/test/mir-opt/bool_compare.opt2.InstCombine.diff
@@ -14,7 +14,7 @@
 -         _2 = Ne(const true, move _3);    // scope 0 at $DIR/bool_compare.rs:+1:8: +1:17
 +         _2 = Not(move _3);               // scope 0 at $DIR/bool_compare.rs:+1:8: +1:17
           StorageDead(_3);                 // scope 0 at $DIR/bool_compare.rs:+1:16: +1:17
-          switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/bool_compare.rs:+1:8: +1:17
+          switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/bool_compare.rs:+1:8: +1:17
       }
   
       bb1: {
diff --git a/src/test/mir-opt/bool_compare.opt3.InstCombine.diff b/src/test/mir-opt/bool_compare.opt3.InstCombine.diff
index 676428c95c1..e7432adac7d 100644
--- a/src/test/mir-opt/bool_compare.opt3.InstCombine.diff
+++ b/src/test/mir-opt/bool_compare.opt3.InstCombine.diff
@@ -14,7 +14,7 @@
 -         _2 = Eq(move _3, const false);   // scope 0 at $DIR/bool_compare.rs:+1:8: +1:18
 +         _2 = Not(move _3);               // scope 0 at $DIR/bool_compare.rs:+1:8: +1:18
           StorageDead(_3);                 // scope 0 at $DIR/bool_compare.rs:+1:17: +1:18
-          switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/bool_compare.rs:+1:8: +1:18
+          switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/bool_compare.rs:+1:8: +1:18
       }
   
       bb1: {
diff --git a/src/test/mir-opt/bool_compare.opt4.InstCombine.diff b/src/test/mir-opt/bool_compare.opt4.InstCombine.diff
index addfcd769a5..6b3e27772f7 100644
--- a/src/test/mir-opt/bool_compare.opt4.InstCombine.diff
+++ b/src/test/mir-opt/bool_compare.opt4.InstCombine.diff
@@ -14,7 +14,7 @@
 -         _2 = Eq(const false, move _3);   // scope 0 at $DIR/bool_compare.rs:+1:8: +1:18
 +         _2 = Not(move _3);               // scope 0 at $DIR/bool_compare.rs:+1:8: +1:18
           StorageDead(_3);                 // scope 0 at $DIR/bool_compare.rs:+1:17: +1:18
-          switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/bool_compare.rs:+1:8: +1:18
+          switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/bool_compare.rs:+1:8: +1:18
       }
   
       bb1: {
diff --git a/src/test/mir-opt/building/issue_101867.main.built.after.mir b/src/test/mir-opt/building/issue_101867.main.built.after.mir
index 0ebd840cf2d..628a33f1020 100644
--- a/src/test/mir-opt/building/issue_101867.main.built.after.mir
+++ b/src/test/mir-opt/building/issue_101867.main.built.after.mir
@@ -27,7 +27,7 @@ fn main() -> () {
         StorageLive(_5);                 // scope 1 at $DIR/issue_101867.rs:+2:14: +2:15
         FakeRead(ForMatchedPlace(None), _1); // scope 1 at $DIR/issue_101867.rs:+2:19: +2:20
         _6 = discriminant(_1);           // scope 1 at $DIR/issue_101867.rs:+2:19: +2:20
-        switchInt(move _6) -> [1_isize: bb4, otherwise: bb3]; // scope 1 at $DIR/issue_101867.rs:+2:9: +2:16
+        switchInt(move _6) -> [1: bb4, otherwise: bb3]; // scope 1 at $DIR/issue_101867.rs:+2:9: +2:16
     }
 
     bb1: {
diff --git a/src/test/mir-opt/building/issue_49232.main.built.after.mir b/src/test/mir-opt/building/issue_49232.main.built.after.mir
index 9182bcaa21f..de5e4c0f6ed 100644
--- a/src/test/mir-opt/building/issue_49232.main.built.after.mir
+++ b/src/test/mir-opt/building/issue_49232.main.built.after.mir
@@ -25,7 +25,7 @@ fn main() -> () {
         StorageLive(_3);                 // scope 0 at $DIR/issue_49232.rs:+3:19: +3:23
         _3 = const true;                 // scope 0 at $DIR/issue_49232.rs:+3:19: +3:23
         FakeRead(ForMatchedPlace(None), _3); // scope 0 at $DIR/issue_49232.rs:+3:19: +3:23
-        switchInt(_3) -> [false: bb3, otherwise: bb4]; // scope 0 at $DIR/issue_49232.rs:+3:13: +3:23
+        switchInt(_3) -> [0: bb3, otherwise: bb4]; // scope 0 at $DIR/issue_49232.rs:+3:13: +3:23
     }
 
     bb3: {
diff --git a/src/test/mir-opt/building/match_false_edges.full_tested_match.built.after.mir b/src/test/mir-opt/building/match_false_edges.full_tested_match.built.after.mir
index 9a190c3d60e..cb36bc64da6 100644
--- a/src/test/mir-opt/building/match_false_edges.full_tested_match.built.after.mir
+++ b/src/test/mir-opt/building/match_false_edges.full_tested_match.built.after.mir
@@ -28,7 +28,7 @@ fn full_tested_match() -> () {
         _2 = Option::<i32>::Some(const 42_i32); // scope 0 at $DIR/match_false_edges.rs:+1:19: +1:27
         FakeRead(ForMatchedPlace(None), _2); // scope 0 at $DIR/match_false_edges.rs:+1:19: +1:27
         _3 = discriminant(_2);           // scope 0 at $DIR/match_false_edges.rs:+1:19: +1:27
-        switchInt(move _3) -> [0_isize: bb1, 1_isize: bb2, otherwise: bb4]; // scope 0 at $DIR/match_false_edges.rs:+1:13: +1:27
+        switchInt(move _3) -> [0: bb1, 1: bb2, otherwise: bb4]; // scope 0 at $DIR/match_false_edges.rs:+1:13: +1:27
     }
 
     bb1: {
@@ -60,7 +60,7 @@ fn full_tested_match() -> () {
     }
 
     bb6: {
-        switchInt(move _7) -> [false: bb8, otherwise: bb7]; // scope 0 at $DIR/match_false_edges.rs:+2:20: +2:27
+        switchInt(move _7) -> [0: bb8, otherwise: bb7]; // scope 0 at $DIR/match_false_edges.rs:+2:20: +2:27
     }
 
     bb7: {
diff --git a/src/test/mir-opt/building/match_false_edges.full_tested_match2.built.after.mir b/src/test/mir-opt/building/match_false_edges.full_tested_match2.built.after.mir
index 1c9953e7efc..7f8755faac6 100644
--- a/src/test/mir-opt/building/match_false_edges.full_tested_match2.built.after.mir
+++ b/src/test/mir-opt/building/match_false_edges.full_tested_match2.built.after.mir
@@ -28,7 +28,7 @@ fn full_tested_match2() -> () {
         _2 = Option::<i32>::Some(const 42_i32); // scope 0 at $DIR/match_false_edges.rs:+1:19: +1:27
         FakeRead(ForMatchedPlace(None), _2); // scope 0 at $DIR/match_false_edges.rs:+1:19: +1:27
         _3 = discriminant(_2);           // scope 0 at $DIR/match_false_edges.rs:+1:19: +1:27
-        switchInt(move _3) -> [0_isize: bb1, 1_isize: bb2, otherwise: bb4]; // scope 0 at $DIR/match_false_edges.rs:+1:13: +1:27
+        switchInt(move _3) -> [0: bb1, 1: bb2, otherwise: bb4]; // scope 0 at $DIR/match_false_edges.rs:+1:13: +1:27
     }
 
     bb1: {
@@ -66,7 +66,7 @@ fn full_tested_match2() -> () {
     }
 
     bb6: {
-        switchInt(move _7) -> [false: bb8, otherwise: bb7]; // scope 0 at $DIR/match_false_edges.rs:+2:20: +2:27
+        switchInt(move _7) -> [0: bb8, otherwise: bb7]; // scope 0 at $DIR/match_false_edges.rs:+2:20: +2:27
     }
 
     bb7: {
diff --git a/src/test/mir-opt/building/match_false_edges.main.built.after.mir b/src/test/mir-opt/building/match_false_edges.main.built.after.mir
index 08c67d39d78..e8b93f4371e 100644
--- a/src/test/mir-opt/building/match_false_edges.main.built.after.mir
+++ b/src/test/mir-opt/building/match_false_edges.main.built.after.mir
@@ -39,7 +39,7 @@ fn main() -> () {
         _2 = Option::<i32>::Some(const 1_i32); // scope 0 at $DIR/match_false_edges.rs:+1:19: +1:26
         FakeRead(ForMatchedPlace(None), _2); // scope 0 at $DIR/match_false_edges.rs:+1:19: +1:26
         _4 = discriminant(_2);           // scope 0 at $DIR/match_false_edges.rs:+1:19: +1:26
-        switchInt(move _4) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/match_false_edges.rs:+1:13: +1:26
+        switchInt(move _4) -> [1: bb2, otherwise: bb1]; // scope 0 at $DIR/match_false_edges.rs:+1:13: +1:26
     }
 
     bb1: {
@@ -56,7 +56,7 @@ fn main() -> () {
 
     bb4: {
         _3 = discriminant(_2);           // scope 0 at $DIR/match_false_edges.rs:+1:19: +1:26
-        switchInt(move _3) -> [1_isize: bb6, otherwise: bb5]; // scope 0 at $DIR/match_false_edges.rs:+1:13: +1:26
+        switchInt(move _3) -> [1: bb6, otherwise: bb5]; // scope 0 at $DIR/match_false_edges.rs:+1:13: +1:26
     }
 
     bb5: {
@@ -87,7 +87,7 @@ fn main() -> () {
     }
 
     bb9: {
-        switchInt(move _8) -> [false: bb11, otherwise: bb10]; // scope 0 at $DIR/match_false_edges.rs:+2:21: +2:28
+        switchInt(move _8) -> [0: bb11, otherwise: bb10]; // scope 0 at $DIR/match_false_edges.rs:+2:21: +2:28
     }
 
     bb10: {
@@ -134,7 +134,7 @@ fn main() -> () {
     }
 
     bb15: {
-        switchInt(move _12) -> [false: bb17, otherwise: bb16]; // scope 0 at $DIR/match_false_edges.rs:+4:20: +4:29
+        switchInt(move _12) -> [0: bb17, otherwise: bb16]; // scope 0 at $DIR/match_false_edges.rs:+4:20: +4:29
     }
 
     bb16: {
diff --git a/src/test/mir-opt/building/simple_match.match_bool.built.after.mir b/src/test/mir-opt/building/simple_match.match_bool.built.after.mir
index a4516026c3b..aa2fd46320e 100644
--- a/src/test/mir-opt/building/simple_match.match_bool.built.after.mir
+++ b/src/test/mir-opt/building/simple_match.match_bool.built.after.mir
@@ -6,7 +6,7 @@ fn match_bool(_1: bool) -> usize {
 
     bb0: {
         FakeRead(ForMatchedPlace(None), _1); // scope 0 at $DIR/simple_match.rs:+1:11: +1:12
-        switchInt(_1) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/simple_match.rs:+1:5: +1:12
+        switchInt(_1) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/simple_match.rs:+1:5: +1:12
     }
 
     bb1: {
diff --git a/src/test/mir-opt/const_goto.issue_77355_opt.ConstGoto.diff b/src/test/mir-opt/const_goto.issue_77355_opt.ConstGoto.diff
index fade2d0bc6e..a717d1bbd12 100644
--- a/src/test/mir-opt/const_goto.issue_77355_opt.ConstGoto.diff
+++ b/src/test/mir-opt/const_goto.issue_77355_opt.ConstGoto.diff
@@ -11,9 +11,9 @@
       bb0: {
 -         StorageLive(_2);                 // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
 -         _3 = discriminant(_1);           // scope 0 at $DIR/const_goto.rs:+1:17: +1:20
--         switchInt(move _3) -> [1_isize: bb2, 2_isize: bb2, otherwise: bb1]; // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
+-         switchInt(move _3) -> [1: bb2, 2: bb2, otherwise: bb1]; // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
 +         _2 = discriminant(_1);           // scope 0 at $DIR/const_goto.rs:+1:17: +1:20
-+         switchInt(move _2) -> [1_isize: bb2, 2_isize: bb2, otherwise: bb1]; // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
++         switchInt(move _2) -> [1: bb2, 2: bb2, otherwise: bb1]; // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
       }
   
       bb1: {
@@ -29,7 +29,7 @@
 -     }
 - 
 -     bb3: {
--         switchInt(move _2) -> [false: bb5, otherwise: bb4]; // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
+-         switchInt(move _2) -> [0: bb5, otherwise: bb4]; // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
 -     }
 - 
 -     bb4: {
diff --git a/src/test/mir-opt/const_goto_const_eval_fail.f.ConstGoto.diff b/src/test/mir-opt/const_goto_const_eval_fail.f.ConstGoto.diff
index 623297aeba5..24be8c9b868 100644
--- a/src/test/mir-opt/const_goto_const_eval_fail.f.ConstGoto.diff
+++ b/src/test/mir-opt/const_goto_const_eval_fail.f.ConstGoto.diff
@@ -10,7 +10,7 @@
           StorageLive(_1);                 // scope 0 at $DIR/const_goto_const_eval_fail.rs:+1:11: +6:6
           StorageLive(_2);                 // scope 0 at $DIR/const_goto_const_eval_fail.rs:+2:15: +2:16
           _2 = const A;                    // scope 0 at $DIR/const_goto_const_eval_fail.rs:+2:15: +2:16
-          switchInt(_2) -> [1_i32: bb2, 2_i32: bb2, 3_i32: bb2, otherwise: bb1]; // scope 0 at $DIR/const_goto_const_eval_fail.rs:+2:9: +2:16
+          switchInt(_2) -> [1: bb2, 2: bb2, 3: bb2, otherwise: bb1]; // scope 0 at $DIR/const_goto_const_eval_fail.rs:+2:9: +2:16
       }
   
       bb1: {
@@ -21,11 +21,11 @@
       bb2: {
           _1 = const B;                    // scope 0 at $DIR/const_goto_const_eval_fail.rs:+3:26: +3:27
 -         goto -> bb3;                     // scope 0 at $DIR/const_goto_const_eval_fail.rs:+3:26: +3:27
-+         switchInt(_1) -> [false: bb4, otherwise: bb3]; // scope 0 at $DIR/const_goto_const_eval_fail.rs:+1:5: +6:6
++         switchInt(_1) -> [0: bb4, otherwise: bb3]; // scope 0 at $DIR/const_goto_const_eval_fail.rs:+1:5: +6:6
       }
   
       bb3: {
--         switchInt(_1) -> [false: bb5, otherwise: bb4]; // scope 0 at $DIR/const_goto_const_eval_fail.rs:+1:5: +6:6
+-         switchInt(_1) -> [0: bb5, otherwise: bb4]; // scope 0 at $DIR/const_goto_const_eval_fail.rs:+1:5: +6:6
 -     }
 - 
 -     bb4: {
diff --git a/src/test/mir-opt/const_goto_storage.match_nested_if.ConstGoto.diff b/src/test/mir-opt/const_goto_storage.match_nested_if.ConstGoto.diff
index 81c356cb1db..f5457725943 100644
--- a/src/test/mir-opt/const_goto_storage.match_nested_if.ConstGoto.diff
+++ b/src/test/mir-opt/const_goto_storage.match_nested_if.ConstGoto.diff
@@ -23,10 +23,10 @@
 -         StorageLive(_5);                 // scope 0 at $DIR/const_goto_storage.rs:+2:21: +2:52
 -         StorageLive(_6);                 // scope 0 at $DIR/const_goto_storage.rs:+2:24: +2:28
 -         _6 = const true;                 // scope 0 at $DIR/const_goto_storage.rs:+2:24: +2:28
--         switchInt(move _6) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/const_goto_storage.rs:+2:24: +2:28
+-         switchInt(move _6) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/const_goto_storage.rs:+2:24: +2:28
 +         StorageLive(_2);                 // scope 0 at $DIR/const_goto_storage.rs:+2:24: +2:28
 +         _2 = const true;                 // scope 0 at $DIR/const_goto_storage.rs:+2:24: +2:28
-+         switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/const_goto_storage.rs:+2:24: +2:28
++         switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/const_goto_storage.rs:+2:24: +2:28
       }
   
       bb1: {
@@ -41,7 +41,7 @@
 - 
 -     bb3: {
 -         StorageDead(_6);                 // scope 0 at $DIR/const_goto_storage.rs:+2:51: +2:52
--         switchInt(move _5) -> [false: bb5, otherwise: bb4]; // scope 0 at $DIR/const_goto_storage.rs:+2:21: +2:52
+-         switchInt(move _5) -> [0: bb5, otherwise: bb4]; // scope 0 at $DIR/const_goto_storage.rs:+2:21: +2:52
 -     }
 - 
 -     bb4: {
@@ -56,7 +56,7 @@
 - 
 -     bb6: {
 -         StorageDead(_5);                 // scope 0 at $DIR/const_goto_storage.rs:+2:75: +2:76
--         switchInt(move _4) -> [false: bb8, otherwise: bb7]; // scope 0 at $DIR/const_goto_storage.rs:+2:18: +2:76
+-         switchInt(move _4) -> [0: bb8, otherwise: bb7]; // scope 0 at $DIR/const_goto_storage.rs:+2:18: +2:76
 -     }
 - 
 -     bb7: {
@@ -70,7 +70,7 @@
 -     }
 - 
 -     bb9: {
--         switchInt(move _3) -> [false: bb11, otherwise: bb10]; // scope 0 at $DIR/const_goto_storage.rs:+2:15: +6:10
+-         switchInt(move _3) -> [0: bb11, otherwise: bb10]; // scope 0 at $DIR/const_goto_storage.rs:+2:15: +6:10
 -     }
 - 
 -     bb10: {
diff --git a/src/test/mir-opt/const_prop/control_flow_simplification.hello.ConstProp.diff b/src/test/mir-opt/const_prop/control_flow_simplification.hello.ConstProp.diff
index 8b3b9d0a4c1..147670f8a91 100644
--- a/src/test/mir-opt/const_prop/control_flow_simplification.hello.ConstProp.diff
+++ b/src/test/mir-opt/const_prop/control_flow_simplification.hello.ConstProp.diff
@@ -9,8 +9,8 @@
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/control_flow_simplification.rs:+1:8: +1:21
           _1 = const _;                    // scope 0 at $DIR/control_flow_simplification.rs:+1:8: +1:21
--         switchInt(move _1) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/control_flow_simplification.rs:+1:8: +1:21
-+         switchInt(const false) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/control_flow_simplification.rs:+1:8: +1:21
+-         switchInt(move _1) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/control_flow_simplification.rs:+1:8: +1:21
++         switchInt(const false) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/control_flow_simplification.rs:+1:8: +1:21
       }
   
       bb1: {
diff --git a/src/test/mir-opt/const_prop/discriminant.main.ConstProp.32bit.diff b/src/test/mir-opt/const_prop/discriminant.main.ConstProp.32bit.diff
index 6b29bb59c40..b4dccecc672 100644
--- a/src/test/mir-opt/const_prop/discriminant.main.ConstProp.32bit.diff
+++ b/src/test/mir-opt/const_prop/discriminant.main.ConstProp.32bit.diff
@@ -21,13 +21,13 @@
           ((_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
 -         _4 = discriminant(_3);           // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
--         switchInt(move _4) -> [1_isize: bb1, otherwise: bb3]; // 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
 +         _4 = const 1_isize;              // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
-+         switchInt(const 1_isize) -> [1_isize: bb1, otherwise: bb3]; // 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)) -> [false: 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
       }
   
       bb2: {
diff --git a/src/test/mir-opt/const_prop/discriminant.main.ConstProp.64bit.diff b/src/test/mir-opt/const_prop/discriminant.main.ConstProp.64bit.diff
index 6b29bb59c40..b4dccecc672 100644
--- a/src/test/mir-opt/const_prop/discriminant.main.ConstProp.64bit.diff
+++ b/src/test/mir-opt/const_prop/discriminant.main.ConstProp.64bit.diff
@@ -21,13 +21,13 @@
           ((_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
 -         _4 = discriminant(_3);           // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
--         switchInt(move _4) -> [1_isize: bb1, otherwise: bb3]; // 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
 +         _4 = const 1_isize;              // scope 2 at $DIR/discriminant.rs:+1:21: +1:31
-+         switchInt(const 1_isize) -> [1_isize: bb1, otherwise: bb3]; // 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)) -> [false: 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
       }
   
       bb2: {
diff --git a/src/test/mir-opt/const_prop/switch_int.main.ConstProp.diff b/src/test/mir-opt/const_prop/switch_int.main.ConstProp.diff
index 9d7c2784d8b..ddc1a4493db 100644
--- a/src/test/mir-opt/const_prop/switch_int.main.ConstProp.diff
+++ b/src/test/mir-opt/const_prop/switch_int.main.ConstProp.diff
@@ -8,8 +8,8 @@
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/switch_int.rs:+1:11: +1:12
           _1 = const 1_i32;                // scope 0 at $DIR/switch_int.rs:+1:11: +1:12
--         switchInt(_1) -> [1_i32: bb2, otherwise: bb1]; // scope 0 at $DIR/switch_int.rs:+1:5: +1:12
-+         switchInt(const 1_i32) -> [1_i32: bb2, otherwise: bb1]; // scope 0 at $DIR/switch_int.rs:+1:5: +1:12
+-         switchInt(_1) -> [1: bb2, otherwise: bb1]; // scope 0 at $DIR/switch_int.rs:+1:5: +1:12
++         switchInt(const 1_i32) -> [1: bb2, otherwise: bb1]; // scope 0 at $DIR/switch_int.rs:+1:5: +1:12
       }
   
       bb1: {
diff --git a/src/test/mir-opt/const_prop/switch_int.main.SimplifyConstCondition-after-const-prop.diff b/src/test/mir-opt/const_prop/switch_int.main.SimplifyConstCondition-after-const-prop.diff
index 74f9eafe420..09c47ee6e83 100644
--- a/src/test/mir-opt/const_prop/switch_int.main.SimplifyConstCondition-after-const-prop.diff
+++ b/src/test/mir-opt/const_prop/switch_int.main.SimplifyConstCondition-after-const-prop.diff
@@ -8,7 +8,7 @@
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/switch_int.rs:+1:11: +1:12
           _1 = const 1_i32;                // scope 0 at $DIR/switch_int.rs:+1:11: +1:12
--         switchInt(const 1_i32) -> [1_i32: bb2, otherwise: bb1]; // scope 0 at $DIR/switch_int.rs:+1:5: +1:12
+-         switchInt(const 1_i32) -> [1: bb2, otherwise: bb1]; // scope 0 at $DIR/switch_int.rs:+1:5: +1:12
 +         goto -> bb2;                     // scope 0 at $DIR/switch_int.rs:+1:5: +1:12
       }
   
diff --git a/src/test/mir-opt/coverage_graphviz.main.InstrumentCoverage.0.dot b/src/test/mir-opt/coverage_graphviz.main.InstrumentCoverage.0.dot
index fd21b14af25..c4d389b2d76 100644
--- a/src/test/mir-opt/coverage_graphviz.main.InstrumentCoverage.0.dot
+++ b/src/test/mir-opt/coverage_graphviz.main.InstrumentCoverage.0.dot
@@ -7,7 +7,7 @@ digraph Cov_0_3 {
     bcb1__Cov_0_3 [shape="none", label=<<table border="0" cellborder="1" cellspacing="0"><tr><td bgcolor="gray" align="center" colspan="1">bcb1</td></tr><tr><td align="left" balign="left">Expression(bcb0 + bcb3) at 10:5-11:17<br align="left"/>    11:12-11:17: @2.Call: _2 = bar() -&gt; [return: bb3, unwind: bb6]</td></tr><tr><td align="left" balign="left">bb1: FalseUnwind<br align="left"/>bb2: Call</td></tr><tr><td align="left" balign="left">bb3: SwitchInt</td></tr></table>>];
     bcb0__Cov_0_3 [shape="none", label=<<table border="0" cellborder="1" cellspacing="0"><tr><td bgcolor="gray" align="center" colspan="1">bcb0</td></tr><tr><td align="left" balign="left"></td></tr><tr><td align="left" balign="left">Counter(bcb0) at 9:1-9:11<br align="left"/>    </td></tr><tr><td align="left" balign="left">bb0: Goto</td></tr></table>>];
     bcb3__Cov_0_3 -> bcb1__Cov_0_3 [label=<>];
-    bcb1__Cov_0_3 -> bcb3__Cov_0_3 [label=<false>];
+    bcb1__Cov_0_3 -> bcb3__Cov_0_3 [label=<0>];
     bcb1__Cov_0_3 -> bcb2__Cov_0_3 [label=<otherwise>];
     bcb0__Cov_0_3 -> bcb1__Cov_0_3 [label=<>];
 }
diff --git a/src/test/mir-opt/dataflow-const-prop/enum.main.DataflowConstProp.diff b/src/test/mir-opt/dataflow-const-prop/enum.main.DataflowConstProp.diff
index 2ced794e628..fce18fae436 100644
--- a/src/test/mir-opt/dataflow-const-prop/enum.main.DataflowConstProp.diff
+++ b/src/test/mir-opt/dataflow-const-prop/enum.main.DataflowConstProp.diff
@@ -28,7 +28,7 @@
           discriminant(_1) = 0;            // 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_isize: bb3, 1_isize: bb1, otherwise: bb2]; // scope 1 at $DIR/enum.rs:+2:13: +2:20
+          switchInt(move _3) -> [0: bb3, 1: bb1, otherwise: bb2]; // scope 1 at $DIR/enum.rs:+2:13: +2:20
       }
   
       bb1: {
diff --git a/src/test/mir-opt/dataflow-const-prop/if.main.DataflowConstProp.diff b/src/test/mir-opt/dataflow-const-prop/if.main.DataflowConstProp.diff
index 26808c70fbf..32489b4bd6b 100644
--- a/src/test/mir-opt/dataflow-const-prop/if.main.DataflowConstProp.diff
+++ b/src/test/mir-opt/dataflow-const-prop/if.main.DataflowConstProp.diff
@@ -42,8 +42,8 @@
 +         _4 = const 1_i32;                // scope 1 at $DIR/if.rs:+2:16: +2:17
 +         _3 = const true;                 // scope 1 at $DIR/if.rs:+2:16: +2:22
           StorageDead(_4);                 // scope 1 at $DIR/if.rs:+2:21: +2:22
--         switchInt(move _3) -> [false: bb2, otherwise: bb1]; // scope 1 at $DIR/if.rs:+2:16: +2:22
-+         switchInt(const true) -> [false: bb2, otherwise: bb1]; // scope 1 at $DIR/if.rs:+2:16: +2:22
+-         switchInt(move _3) -> [0: bb2, otherwise: bb1]; // scope 1 at $DIR/if.rs:+2:16: +2:22
++         switchInt(const true) -> [0: bb2, otherwise: bb1]; // scope 1 at $DIR/if.rs:+2:16: +2:22
       }
   
       bb1: {
@@ -73,8 +73,8 @@
 +         _9 = const 1_i32;                // scope 3 at $DIR/if.rs:+5:16: +5:17
 +         _8 = const true;                 // scope 3 at $DIR/if.rs:+5:16: +5:22
           StorageDead(_9);                 // scope 3 at $DIR/if.rs:+5:21: +5:22
--         switchInt(move _8) -> [false: bb5, otherwise: bb4]; // scope 3 at $DIR/if.rs:+5:16: +5:22
-+         switchInt(const true) -> [false: bb5, otherwise: bb4]; // scope 3 at $DIR/if.rs:+5:16: +5:22
+-         switchInt(move _8) -> [0: bb5, otherwise: bb4]; // scope 3 at $DIR/if.rs:+5:16: +5:22
++         switchInt(const true) -> [0: bb5, otherwise: bb4]; // scope 3 at $DIR/if.rs:+5:16: +5:22
       }
   
       bb4: {
diff --git a/src/test/mir-opt/dataflow-const-prop/issue_81605.f.DataflowConstProp.diff b/src/test/mir-opt/dataflow-const-prop/issue_81605.f.DataflowConstProp.diff
index 881d80f7c03..5a87884977c 100644
--- a/src/test/mir-opt/dataflow-const-prop/issue_81605.f.DataflowConstProp.diff
+++ b/src/test/mir-opt/dataflow-const-prop/issue_81605.f.DataflowConstProp.diff
@@ -10,8 +10,8 @@
           StorageLive(_1);                 // scope 0 at $DIR/issue_81605.rs:+1:9: +1:33
           StorageLive(_2);                 // scope 0 at $DIR/issue_81605.rs:+1:12: +1:16
           _2 = const true;                 // scope 0 at $DIR/issue_81605.rs:+1:12: +1:16
--         switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/issue_81605.rs:+1:12: +1:16
-+         switchInt(const true) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/issue_81605.rs:+1:12: +1:16
+-         switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/issue_81605.rs:+1:12: +1:16
++         switchInt(const true) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/issue_81605.rs:+1:12: +1:16
       }
   
       bb1: {
diff --git a/src/test/mir-opt/dead-store-elimination/cycle.cycle.DeadStoreElimination.diff b/src/test/mir-opt/dead-store-elimination/cycle.cycle.DeadStoreElimination.diff
index 61d24c3b517..80f8905adc9 100644
--- a/src/test/mir-opt/dead-store-elimination/cycle.cycle.DeadStoreElimination.diff
+++ b/src/test/mir-opt/dead-store-elimination/cycle.cycle.DeadStoreElimination.diff
@@ -37,8 +37,8 @@
       }
   
       bb2: {
--         switchInt(move _5) -> [false: bb4, otherwise: bb3]; // scope 0 at $DIR/cycle.rs:+3:11: +3:17
-+         switchInt(move _4) -> [false: bb4, otherwise: bb3]; // scope 0 at $DIR/cycle.rs:+3:11: +3:17
+-         switchInt(move _5) -> [0: bb4, otherwise: bb3]; // scope 0 at $DIR/cycle.rs:+3:11: +3:17
++         switchInt(move _4) -> [0: bb4, otherwise: bb3]; // scope 0 at $DIR/cycle.rs:+3:11: +3:17
       }
   
       bb3: {
diff --git a/src/test/mir-opt/deaggregator_test_enum_2.test1.Deaggregator.diff b/src/test/mir-opt/deaggregator_test_enum_2.test1.Deaggregator.diff
index fb18089e040..210d3849e18 100644
--- a/src/test/mir-opt/deaggregator_test_enum_2.test1.Deaggregator.diff
+++ b/src/test/mir-opt/deaggregator_test_enum_2.test1.Deaggregator.diff
@@ -12,7 +12,7 @@
       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) -> [false: bb2, otherwise: bb1]; // 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: {
diff --git a/src/test/mir-opt/deduplicate_blocks.is_line_doc_comment_2.DeduplicateBlocks.diff b/src/test/mir-opt/deduplicate_blocks.is_line_doc_comment_2.DeduplicateBlocks.diff
index 995611f0e96..3b1f81175cb 100644
--- a/src/test/mir-opt/deduplicate_blocks.is_line_doc_comment_2.DeduplicateBlocks.diff
+++ b/src/test/mir-opt/deduplicate_blocks.is_line_doc_comment_2.DeduplicateBlocks.diff
@@ -28,44 +28,44 @@
           _7 = Len((*_2));                 // scope 0 at $DIR/deduplicate_blocks.rs:+2:9: +2:37
           _8 = const 4_usize;              // scope 0 at $DIR/deduplicate_blocks.rs:+2:9: +2:37
           _9 = Ge(move _7, move _8);       // scope 0 at $DIR/deduplicate_blocks.rs:+2:9: +2:37
-          switchInt(move _9) -> [false: bb6, otherwise: bb2]; // scope 0 at $DIR/deduplicate_blocks.rs:+2:9: +2:37
+          switchInt(move _9) -> [0: bb6, otherwise: bb2]; // scope 0 at $DIR/deduplicate_blocks.rs:+2:9: +2:37
       }
   
       bb2: {
-          switchInt((*_2)[0 of 4]) -> [47_u8: bb3, otherwise: bb6]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
+          switchInt((*_2)[0 of 4]) -> [47: bb3, otherwise: bb6]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
       }
   
       bb3: {
-          switchInt((*_2)[1 of 4]) -> [47_u8: bb4, otherwise: bb6]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
+          switchInt((*_2)[1 of 4]) -> [47: bb4, otherwise: bb6]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
       }
   
       bb4: {
-          switchInt((*_2)[2 of 4]) -> [47_u8: bb5, otherwise: bb6]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
+          switchInt((*_2)[2 of 4]) -> [47: bb5, otherwise: bb6]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
       }
   
       bb5: {
--         switchInt((*_2)[3 of 4]) -> [47_u8: bb11, otherwise: bb6]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
-+         switchInt((*_2)[3 of 4]) -> [47_u8: bb10, otherwise: bb6]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
+-         switchInt((*_2)[3 of 4]) -> [47: bb11, otherwise: bb6]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
++         switchInt((*_2)[3 of 4]) -> [47: bb10, otherwise: bb6]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
       }
   
       bb6: {
           _4 = Len((*_2));                 // scope 0 at $DIR/deduplicate_blocks.rs:+3:9: +3:31
           _5 = const 3_usize;              // scope 0 at $DIR/deduplicate_blocks.rs:+3:9: +3:31
           _6 = Ge(move _4, move _5);       // scope 0 at $DIR/deduplicate_blocks.rs:+3:9: +3:31
-          switchInt(move _6) -> [false: bb10, otherwise: bb7]; // scope 0 at $DIR/deduplicate_blocks.rs:+3:9: +3:31
+          switchInt(move _6) -> [0: bb10, otherwise: bb7]; // scope 0 at $DIR/deduplicate_blocks.rs:+3:9: +3:31
       }
   
       bb7: {
-          switchInt((*_2)[0 of 3]) -> [47_u8: bb8, otherwise: bb10]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
+          switchInt((*_2)[0 of 3]) -> [47: bb8, otherwise: bb10]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
       }
   
       bb8: {
-          switchInt((*_2)[1 of 3]) -> [47_u8: bb9, otherwise: bb10]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
+          switchInt((*_2)[1 of 3]) -> [47: bb9, otherwise: bb10]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
       }
   
       bb9: {
--         switchInt((*_2)[2 of 3]) -> [47_u8: bb12, 33_u8: bb13, otherwise: bb10]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
-+         switchInt((*_2)[2 of 3]) -> [47_u8: bb11, 33_u8: bb11, otherwise: bb10]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
+-         switchInt((*_2)[2 of 3]) -> [47: bb12, 33: bb13, otherwise: bb10]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
++         switchInt((*_2)[2 of 3]) -> [47: bb11, 33: bb11, otherwise: bb10]; // scope 0 at $DIR/deduplicate_blocks.rs:+1:5: +1:23
       }
   
       bb10: {
diff --git a/src/test/mir-opt/deref-patterns/string.foo.PreCodegen.after.mir b/src/test/mir-opt/deref-patterns/string.foo.PreCodegen.after.mir
index 5b185082d4d..9597a0c835f 100644
--- a/src/test/mir-opt/deref-patterns/string.foo.PreCodegen.after.mir
+++ b/src/test/mir-opt/deref-patterns/string.foo.PreCodegen.after.mir
@@ -17,7 +17,7 @@ fn foo(_1: Option<String>) -> i32 {
         _7 = const false;                // scope 0 at $DIR/string.rs:+1:11: +1:12
         _7 = const true;                 // scope 0 at $DIR/string.rs:+1:11: +1:12
         _5 = discriminant(_1);           // scope 0 at $DIR/string.rs:+1:11: +1:12
-        switchInt(move _5) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/string.rs:+1:5: +1:12
+        switchInt(move _5) -> [1: bb2, otherwise: bb1]; // scope 0 at $DIR/string.rs:+1:5: +1:12
     }
 
     bb1: {
@@ -47,7 +47,7 @@ fn foo(_1: Option<String>) -> i32 {
     }
 
     bb4: {
-        switchInt(move _4) -> [false: bb1, otherwise: bb5]; // scope 0 at $DIR/string.rs:+2:14: +2:17
+        switchInt(move _4) -> [0: bb1, otherwise: bb5]; // scope 0 at $DIR/string.rs:+2:14: +2:17
     }
 
     bb5: {
@@ -69,6 +69,6 @@ fn foo(_1: Option<String>) -> i32 {
     }
 
     bb9: {
-        switchInt(_7) -> [false: bb7, otherwise: bb8]; // scope 0 at $DIR/string.rs:+5:1: +5:2
+        switchInt(_7) -> [0: bb7, otherwise: bb8]; // scope 0 at $DIR/string.rs:+5:1: +5:2
     }
 }
diff --git a/src/test/mir-opt/derefer_complex_case.main.Derefer.diff b/src/test/mir-opt/derefer_complex_case.main.Derefer.diff
index 713d56c3836..fa3eeedc40f 100644
--- a/src/test/mir-opt/derefer_complex_case.main.Derefer.diff
+++ b/src/test/mir-opt/derefer_complex_case.main.Derefer.diff
@@ -62,7 +62,7 @@
       bb3: {
           StorageDead(_8);                 // scope 1 at $DIR/derefer_complex_case.rs:+1:25: +1:26
           _10 = discriminant(_7);          // scope 1 at $DIR/derefer_complex_case.rs:+1:17: +1:26
-          switchInt(move _10) -> [0_isize: bb6, 1_isize: bb4, otherwise: bb5]; // scope 1 at $DIR/derefer_complex_case.rs:+1:17: +1:26
+          switchInt(move _10) -> [0: bb6, 1: bb4, otherwise: bb5]; // scope 1 at $DIR/derefer_complex_case.rs:+1:17: +1:26
       }
   
       bb4: {
diff --git a/src/test/mir-opt/derefer_terminator_test.main.Derefer.diff b/src/test/mir-opt/derefer_terminator_test.main.Derefer.diff
index 60f7b9d5607..ab2388d1323 100644
--- a/src/test/mir-opt/derefer_terminator_test.main.Derefer.diff
+++ b/src/test/mir-opt/derefer_terminator_test.main.Derefer.diff
@@ -54,11 +54,11 @@
           _6 = &_7;                        // scope 2 at $DIR/derefer_terminator_test.rs:+3:18: +3:21
           _5 = &_6;                        // scope 2 at $DIR/derefer_terminator_test.rs:+3:17: +3:21
           _4 = &_5;                        // scope 2 at $DIR/derefer_terminator_test.rs:+3:15: +3:22
--         switchInt((*(*(*(*_4))))) -> [false: bb3, otherwise: bb4]; // scope 2 at $DIR/derefer_terminator_test.rs:+3:5: +3:22
+-         switchInt((*(*(*(*_4))))) -> [0: bb3, otherwise: bb4]; // scope 2 at $DIR/derefer_terminator_test.rs:+3:5: +3:22
 +         _10 = deref_copy (*_4);          // scope 2 at $DIR/derefer_terminator_test.rs:+3:5: +3:22
 +         _11 = deref_copy (*_10);         // scope 2 at $DIR/derefer_terminator_test.rs:+3:5: +3:22
 +         _12 = deref_copy (*_11);         // scope 2 at $DIR/derefer_terminator_test.rs:+3:5: +3:22
-+         switchInt((*_12)) -> [false: bb3, otherwise: bb4]; // scope 2 at $DIR/derefer_terminator_test.rs:+3:5: +3:22
++         switchInt((*_12)) -> [0: bb3, otherwise: bb4]; // scope 2 at $DIR/derefer_terminator_test.rs:+3:5: +3:22
       }
   
       bb3: {
diff --git a/src/test/mir-opt/dest-prop/branch.foo.DestinationPropagation.diff b/src/test/mir-opt/dest-prop/branch.foo.DestinationPropagation.diff
index 5fa7013d5ca..9c729663265 100644
--- a/src/test/mir-opt/dest-prop/branch.foo.DestinationPropagation.diff
+++ b/src/test/mir-opt/dest-prop/branch.foo.DestinationPropagation.diff
@@ -37,7 +37,7 @@
       }
   
       bb2: {
-          switchInt(move _3) -> [false: bb4, otherwise: bb3]; // scope 1 at $DIR/branch.rs:+3:16: +3:22
+          switchInt(move _3) -> [0: bb4, otherwise: bb3]; // scope 1 at $DIR/branch.rs:+3:16: +3:22
       }
   
       bb3: {
diff --git a/src/test/mir-opt/early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff b/src/test/mir-opt/early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff
index 89d8106ae3c..98a02ee38dd 100644
--- a/src/test/mir-opt/early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff
+++ b/src/test/mir-opt/early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff
@@ -31,13 +31,13 @@
           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
--         switchInt(move _7) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
+-         switchInt(move _7) -> [1: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 +         StorageLive(_10);                // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 +         _10 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 +         StorageLive(_11);                // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 +         _11 = Ne(_7, move _10);          // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 +         StorageDead(_10);                // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
-+         switchInt(move _11) -> [false: bb4, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
++         switchInt(move _11) -> [0: bb4, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
       }
   
       bb1: {
@@ -49,7 +49,7 @@
   
       bb2: {
 -         _6 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
--         switchInt(move _6) -> [1_isize: bb3, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
+-         switchInt(move _6) -> [1: bb3, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 -     }
 - 
 -     bb3: {
@@ -72,7 +72,7 @@
 + 
 +     bb4: {
 +         StorageDead(_11);                // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
-+         switchInt(_7) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
++         switchInt(_7) -> [1: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
       }
   }
   
diff --git a/src/test/mir-opt/early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff b/src/test/mir-opt/early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff
index 1a9efa93003..aa75c44b809 100644
--- a/src/test/mir-opt/early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff
+++ b/src/test/mir-opt/early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff
@@ -32,18 +32,18 @@
           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
--         switchInt(move _8) -> [0_isize: bb1, 1_isize: bb3, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
+-         switchInt(move _8) -> [0: bb1, 1: bb3, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 +         StorageLive(_11);                // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 +         _11 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 +         StorageLive(_12);                // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 +         _12 = Ne(_8, move _11);          // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 +         StorageDead(_11);                // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
-+         switchInt(move _12) -> [false: bb5, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
++         switchInt(move _12) -> [0: bb5, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
       }
   
       bb1: {
 -         _6 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
--         switchInt(move _6) -> [0_isize: bb5, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
+-         switchInt(move _6) -> [0: bb5, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 -     }
 - 
 -     bb2: {
@@ -55,7 +55,7 @@
   
 -     bb3: {
 -         _7 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
--         switchInt(move _7) -> [1_isize: bb4, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
+-         switchInt(move _7) -> [1: bb4, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 -     }
 - 
 -     bb4: {
@@ -86,7 +86,7 @@
 + 
 +     bb5: {
 +         StorageDead(_12);                // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
-+         switchInt(_8) -> [0_isize: bb3, 1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
++         switchInt(_8) -> [0: bb3, 1: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
       }
   }
   
diff --git a/src/test/mir-opt/early_otherwise_branch.opt3.EarlyOtherwiseBranch.diff b/src/test/mir-opt/early_otherwise_branch.opt3.EarlyOtherwiseBranch.diff
index 309a72ae58b..cea6ff7cd05 100644
--- a/src/test/mir-opt/early_otherwise_branch.opt3.EarlyOtherwiseBranch.diff
+++ b/src/test/mir-opt/early_otherwise_branch.opt3.EarlyOtherwiseBranch.diff
@@ -31,13 +31,13 @@
           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
--         switchInt(move _7) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
+-         switchInt(move _7) -> [1: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 +         StorageLive(_10);                // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 +         _10 = discriminant((_3.1: std::option::Option<bool>)); // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 +         StorageLive(_11);                // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 +         _11 = Ne(_7, move _10);          // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 +         StorageDead(_10);                // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
-+         switchInt(move _11) -> [false: bb4, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
++         switchInt(move _11) -> [0: bb4, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
       }
   
       bb1: {
@@ -49,7 +49,7 @@
   
       bb2: {
 -         _6 = discriminant((_3.1: std::option::Option<bool>)); // scope 0 at $DIR/early_otherwise_branch.rs:+1:11: +1:17
--         switchInt(move _6) -> [1_isize: bb3, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
+-         switchInt(move _6) -> [1: bb3, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
 -     }
 - 
 -     bb3: {
@@ -72,7 +72,7 @@
 + 
 +     bb4: {
 +         StorageDead(_11);                // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
-+         switchInt(_7) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
++         switchInt(_7) -> [1: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:+1:5: +1:17
       }
   }
   
diff --git a/src/test/mir-opt/early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff b/src/test/mir-opt/early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff
index 9574f32f7f0..b90d70ce43a 100644
--- a/src/test/mir-opt/early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff
+++ b/src/test/mir-opt/early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff
@@ -42,13 +42,13 @@
           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
           _10 = discriminant((_4.0: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:11: +1:20
--         switchInt(move _10) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
+-         switchInt(move _10) -> [1: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
 +         StorageLive(_14);                // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
 +         _14 = discriminant((_4.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
 +         StorageLive(_15);                // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
 +         _15 = Ne(_10, move _14);         // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
 +         StorageDead(_14);                // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
-+         switchInt(move _15) -> [false: bb5, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
++         switchInt(move _15) -> [0: bb5, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
       }
   
       bb1: {
@@ -61,13 +61,13 @@
   
       bb2: {
 -         _9 = discriminant((_4.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:11: +1:20
--         switchInt(move _9) -> [1_isize: bb3, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
+-         switchInt(move _9) -> [1: bb3, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
 -     }
 - 
 -     bb3: {
           _8 = discriminant((_4.2: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:11: +1:20
--         switchInt(move _8) -> [1_isize: bb4, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
-+         switchInt(move _8) -> [1_isize: bb3, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
+-         switchInt(move _8) -> [1: bb4, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
++         switchInt(move _8) -> [1: bb3, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
       }
   
 -     bb4: {
@@ -94,7 +94,7 @@
 + 
 +     bb5: {
 +         StorageDead(_15);                // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
-+         switchInt(_10) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
++         switchInt(_10) -> [1: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:+1:5: +1:20
       }
   }
   
diff --git a/src/test/mir-opt/early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.diff b/src/test/mir-opt/early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.diff
index 6bc025bb5b2..9edd1a39f45 100644
--- a/src/test/mir-opt/early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.diff
+++ b/src/test/mir-opt/early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.diff
@@ -80,13 +80,13 @@
           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
           _11 = discriminant((*_34));      // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:14: +5:24
-          switchInt(move _11) -> [0_isize: bb1, 1_isize: bb3, 2_isize: bb4, 3_isize: bb5, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:8: +5:24
+          switchInt(move _11) -> [0: bb1, 1: bb3, 2: bb4, 3: bb5, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:8: +5:24
       }
   
       bb1: {
           _35 = deref_copy (_4.1: &ViewportPercentageLength); // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:14: +5:24
           _7 = discriminant((*_35));       // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:14: +5:24
-          switchInt(move _7) -> [0_isize: bb6, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:8: +5:24
+          switchInt(move _7) -> [0: bb6, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:8: +5:24
       }
   
       bb2: {
@@ -104,19 +104,19 @@
       bb3: {
           _36 = deref_copy (_4.1: &ViewportPercentageLength); // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:14: +5:24
           _8 = discriminant((*_36));       // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:14: +5:24
-          switchInt(move _8) -> [1_isize: bb7, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:8: +5:24
+          switchInt(move _8) -> [1: bb7, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:8: +5:24
       }
   
       bb4: {
           _37 = deref_copy (_4.1: &ViewportPercentageLength); // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:14: +5:24
           _9 = discriminant((*_37));       // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:14: +5:24
-          switchInt(move _9) -> [2_isize: bb8, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:8: +5:24
+          switchInt(move _9) -> [2: bb8, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:8: +5:24
       }
   
       bb5: {
           _38 = deref_copy (_4.1: &ViewportPercentageLength); // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:14: +5:24
           _10 = discriminant((*_38));      // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:14: +5:24
-          switchInt(move _10) -> [3_isize: bb9, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:8: +5:24
+          switchInt(move _10) -> [3: bb9, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:+5:8: +5:24
       }
   
       bb6: {
diff --git a/src/test/mir-opt/early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff b/src/test/mir-opt/early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff
index 321f57951b4..82d8b2fc5a4 100644
--- a/src/test/mir-opt/early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff
+++ b/src/test/mir-opt/early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff
@@ -38,12 +38,12 @@
           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
-          switchInt(move _8) -> [0_isize: bb1, 1_isize: bb4, otherwise: bb3]; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:5: +1:17
+          switchInt(move _8) -> [0: bb1, 1: bb4, otherwise: bb3]; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:5: +1:17
       }
   
       bb1: {
           _6 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:11: +1:17
-          switchInt(move _6) -> [0_isize: bb2, 1_isize: bb7, otherwise: bb3]; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:5: +1:17
+          switchInt(move _6) -> [0: bb2, 1: bb7, otherwise: bb3]; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:5: +1:17
       }
   
       bb2: {
@@ -57,7 +57,7 @@
   
       bb4: {
           _7 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:11: +1:17
-          switchInt(move _7) -> [0_isize: bb6, 1_isize: bb5, otherwise: bb3]; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:5: +1:17
+          switchInt(move _7) -> [0: bb6, 1: bb5, otherwise: bb3]; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:+1:5: +1:17
       }
   
       bb5: {
diff --git a/src/test/mir-opt/early_otherwise_branch_soundness.no_deref_ptr.EarlyOtherwiseBranch.diff b/src/test/mir-opt/early_otherwise_branch_soundness.no_deref_ptr.EarlyOtherwiseBranch.diff
index 8b556acb2c4..a3fa2529b18 100644
--- a/src/test/mir-opt/early_otherwise_branch_soundness.no_deref_ptr.EarlyOtherwiseBranch.diff
+++ b/src/test/mir-opt/early_otherwise_branch_soundness.no_deref_ptr.EarlyOtherwiseBranch.diff
@@ -14,7 +14,7 @@
   
       bb0: {
           _3 = discriminant(_1);           // scope 0 at $DIR/early_otherwise_branch_soundness.rs:+1:11: +1:12
-          switchInt(move _3) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:+1:5: +1:12
+          switchInt(move _3) -> [1: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:+1:5: +1:12
       }
   
       bb1: {
@@ -24,7 +24,7 @@
   
       bb2: {
           _4 = discriminant((*_2));        // scope 0 at $DIR/early_otherwise_branch_soundness.rs:+3:26: +3:28
-          switchInt(move _4) -> [1_isize: bb4, otherwise: bb3]; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:+3:20: +3:28
+          switchInt(move _4) -> [1: bb4, otherwise: bb3]; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:+3:20: +3:28
       }
   
       bb3: {
diff --git a/src/test/mir-opt/early_otherwise_branch_soundness.no_downcast.EarlyOtherwiseBranch.diff b/src/test/mir-opt/early_otherwise_branch_soundness.no_downcast.EarlyOtherwiseBranch.diff
index 659aed18f04..6d0224b547f 100644
--- a/src/test/mir-opt/early_otherwise_branch_soundness.no_downcast.EarlyOtherwiseBranch.diff
+++ b/src/test/mir-opt/early_otherwise_branch_soundness.no_downcast.EarlyOtherwiseBranch.diff
@@ -12,13 +12,13 @@
   
       bb0: {
           _3 = discriminant((*_1));        // scope 1 at $DIR/early_otherwise_branch_soundness.rs:+1:12: +1:31
-          switchInt(move _3) -> [1_isize: bb1, otherwise: bb3]; // scope 1 at $DIR/early_otherwise_branch_soundness.rs:+1:12: +1:31
+          switchInt(move _3) -> [1: bb1, otherwise: bb3]; // scope 1 at $DIR/early_otherwise_branch_soundness.rs:+1:12: +1:31
       }
   
       bb1: {
           _4 = deref_copy (((*_1) as Some).0: &E<'_>); // scope 1 at $DIR/early_otherwise_branch_soundness.rs:+1:12: +1:31
           _2 = discriminant((*_4));        // scope 1 at $DIR/early_otherwise_branch_soundness.rs:+1:12: +1:31
-          switchInt(move _2) -> [1_isize: bb2, otherwise: bb3]; // scope 1 at $DIR/early_otherwise_branch_soundness.rs:+1:12: +1:31
+          switchInt(move _2) -> [1: bb2, otherwise: bb3]; // scope 1 at $DIR/early_otherwise_branch_soundness.rs:+1:12: +1:31
       }
   
       bb2: {
diff --git a/src/test/mir-opt/equal_true.opt.InstCombine.diff b/src/test/mir-opt/equal_true.opt.InstCombine.diff
index 89982308e71..8b542a7c19d 100644
--- a/src/test/mir-opt/equal_true.opt.InstCombine.diff
+++ b/src/test/mir-opt/equal_true.opt.InstCombine.diff
@@ -14,7 +14,7 @@
 -         _2 = Eq(move _3, const true);    // scope 0 at $DIR/equal_true.rs:+1:8: +1:17
 +         _2 = move _3;                    // scope 0 at $DIR/equal_true.rs:+1:8: +1:17
           StorageDead(_3);                 // scope 0 at $DIR/equal_true.rs:+1:16: +1:17
-          switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/equal_true.rs:+1:8: +1:17
+          switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/equal_true.rs:+1:8: +1:17
       }
   
       bb1: {
diff --git a/src/test/mir-opt/exponential_or.match_tuple.SimplifyCfg-initial.after.mir b/src/test/mir-opt/exponential_or.match_tuple.SimplifyCfg-initial.after.mir
index 08481777ed4..ab955049965 100644
--- a/src/test/mir-opt/exponential_or.match_tuple.SimplifyCfg-initial.after.mir
+++ b/src/test/mir-opt/exponential_or.match_tuple.SimplifyCfg-initial.after.mir
@@ -19,7 +19,7 @@ fn match_tuple(_1: (u32, bool, Option<i32>, u32)) -> u32 {
 
     bb0: {
         FakeRead(ForMatchedPlace(None), _1); // scope 0 at $DIR/exponential_or.rs:+1:11: +1:12
-        switchInt((_1.0: u32)) -> [1_u32: bb2, 4_u32: bb2, otherwise: bb1]; // scope 0 at $DIR/exponential_or.rs:+2:15: +2:20
+        switchInt((_1.0: u32)) -> [1: bb2, 4: bb2, otherwise: bb1]; // scope 0 at $DIR/exponential_or.rs:+2:15: +2:20
     }
 
     bb1: {
@@ -29,31 +29,31 @@ fn match_tuple(_1: (u32, bool, Option<i32>, u32)) -> u32 {
 
     bb2: {
         _2 = discriminant((_1.2: std::option::Option<i32>)); // scope 0 at $DIR/exponential_or.rs:+2:37: +2:55
-        switchInt(move _2) -> [0_isize: bb4, 1_isize: bb3, otherwise: bb1]; // scope 0 at $DIR/exponential_or.rs:+2:37: +2:55
+        switchInt(move _2) -> [0: bb4, 1: bb3, otherwise: bb1]; // scope 0 at $DIR/exponential_or.rs:+2:37: +2:55
     }
 
     bb3: {
-        switchInt((((_1.2: std::option::Option<i32>) as Some).0: i32)) -> [1_i32: bb4, 8_i32: bb4, otherwise: bb1]; // scope 0 at $DIR/exponential_or.rs:+2:37: +2:55
+        switchInt((((_1.2: std::option::Option<i32>) as Some).0: i32)) -> [1: bb4, 8: bb4, otherwise: bb1]; // scope 0 at $DIR/exponential_or.rs:+2:37: +2:55
     }
 
     bb4: {
         _5 = Le(const 6_u32, (_1.3: u32)); // scope 0 at $DIR/exponential_or.rs:+2:62: +2:67
-        switchInt(move _5) -> [false: bb6, otherwise: bb5]; // scope 0 at $DIR/exponential_or.rs:+2:62: +2:67
+        switchInt(move _5) -> [0: bb6, otherwise: bb5]; // scope 0 at $DIR/exponential_or.rs:+2:62: +2:67
     }
 
     bb5: {
         _6 = Le((_1.3: u32), const 9_u32); // scope 0 at $DIR/exponential_or.rs:+2:62: +2:67
-        switchInt(move _6) -> [false: bb6, otherwise: bb8]; // scope 0 at $DIR/exponential_or.rs:+2:62: +2:67
+        switchInt(move _6) -> [0: bb6, otherwise: bb8]; // scope 0 at $DIR/exponential_or.rs:+2:62: +2:67
     }
 
     bb6: {
         _3 = Le(const 13_u32, (_1.3: u32)); // scope 0 at $DIR/exponential_or.rs:+2:70: +2:77
-        switchInt(move _3) -> [false: bb1, otherwise: bb7]; // scope 0 at $DIR/exponential_or.rs:+2:70: +2:77
+        switchInt(move _3) -> [0: bb1, otherwise: bb7]; // scope 0 at $DIR/exponential_or.rs:+2:70: +2:77
     }
 
     bb7: {
         _4 = Le((_1.3: u32), const 16_u32); // scope 0 at $DIR/exponential_or.rs:+2:70: +2:77
-        switchInt(move _4) -> [false: bb1, otherwise: bb8]; // scope 0 at $DIR/exponential_or.rs:+2:70: +2:77
+        switchInt(move _4) -> [0: bb1, otherwise: bb8]; // scope 0 at $DIR/exponential_or.rs:+2:70: +2:77
     }
 
     bb8: {
diff --git a/src/test/mir-opt/funky_arms.float_to_exponential_common.ConstProp.diff b/src/test/mir-opt/funky_arms.float_to_exponential_common.ConstProp.diff
index 6ab63e82e35..c1c2cde71ab 100644
--- a/src/test/mir-opt/funky_arms.float_to_exponential_common.ConstProp.diff
+++ b/src/test/mir-opt/funky_arms.float_to_exponential_common.ConstProp.diff
@@ -47,7 +47,7 @@
       bb1: {
           StorageDead(_5);                 // scope 0 at $DIR/funky_arms.rs:+4:36: +4:37
           StorageLive(_6);                 // scope 1 at $DIR/funky_arms.rs:+8:9: +8:13
-          switchInt(_4) -> [false: bb3, otherwise: bb2]; // scope 1 at $DIR/funky_arms.rs:+8:16: +8:32
+          switchInt(_4) -> [0: bb3, otherwise: bb2]; // scope 1 at $DIR/funky_arms.rs:+8:16: +8:32
       }
   
       bb2: {
@@ -75,7 +75,7 @@
       bb5: {
           StorageDead(_8);                 // scope 3 at $DIR/funky_arms.rs:+13:44: +13:45
           _9 = discriminant(_7);           // scope 3 at $DIR/funky_arms.rs:+13:12: +13:27
-          switchInt(move _9) -> [1_isize: bb6, otherwise: bb8]; // scope 3 at $DIR/funky_arms.rs:+13:12: +13:27
+          switchInt(move _9) -> [1: bb6, otherwise: bb8]; // scope 3 at $DIR/funky_arms.rs:+13:12: +13:27
       }
   
       bb6: {
diff --git a/src/test/mir-opt/generator_drop_cleanup.main-{closure#0}.generator_drop.0.mir b/src/test/mir-opt/generator_drop_cleanup.main-{closure#0}.generator_drop.0.mir
index c3b08bf0648..a8e090020c3 100644
--- a/src/test/mir-opt/generator_drop_cleanup.main-{closure#0}.generator_drop.0.mir
+++ b/src/test/mir-opt/generator_drop_cleanup.main-{closure#0}.generator_drop.0.mir
@@ -29,7 +29,7 @@ fn main::{closure#0}(_1: *mut [generator@$DIR/generator_drop_cleanup.rs:10:15: 1
 
     bb0: {
         _8 = discriminant((*_1));        // scope 0 at $DIR/generator_drop_cleanup.rs:+0:15: +3:6
-        switchInt(move _8) -> [0_u32: bb7, 3_u32: bb10, otherwise: bb11]; // scope 0 at $DIR/generator_drop_cleanup.rs:+0:15: +3:6
+        switchInt(move _8) -> [0: bb7, 3: bb10, otherwise: bb11]; // scope 0 at $DIR/generator_drop_cleanup.rs:+0:15: +3:6
     }
 
     bb1: {
diff --git a/src/test/mir-opt/generator_tiny.main-{closure#0}.generator_resume.0.mir b/src/test/mir-opt/generator_tiny.main-{closure#0}.generator_resume.0.mir
index fee6da2c635..b3d3c768a5d 100644
--- a/src/test/mir-opt/generator_tiny.main-{closure#0}.generator_resume.0.mir
+++ b/src/test/mir-opt/generator_tiny.main-{closure#0}.generator_resume.0.mir
@@ -32,7 +32,7 @@ fn main::{closure#0}(_1: Pin<&mut [generator@$DIR/generator_tiny.rs:19:16: 19:24
 
     bb0: {
         _11 = discriminant((*(_1.0: &mut [generator@$DIR/generator_tiny.rs:19:16: 19:24]))); // scope 0 at $DIR/generator_tiny.rs:+0:16: +6:6
-        switchInt(move _11) -> [0_u32: bb1, 3_u32: bb5, otherwise: bb6]; // scope 0 at $DIR/generator_tiny.rs:+0:16: +6:6
+        switchInt(move _11) -> [0: bb1, 3: bb5, otherwise: bb6]; // scope 0 at $DIR/generator_tiny.rs:+0:16: +6:6
     }
 
     bb1: {
diff --git a/src/test/mir-opt/if_condition_int.dont_opt_bool.SimplifyComparisonIntegral.diff b/src/test/mir-opt/if_condition_int.dont_opt_bool.SimplifyComparisonIntegral.diff
index 94180d20343..de4235c9e9e 100644
--- a/src/test/mir-opt/if_condition_int.dont_opt_bool.SimplifyComparisonIntegral.diff
+++ b/src/test/mir-opt/if_condition_int.dont_opt_bool.SimplifyComparisonIntegral.diff
@@ -9,7 +9,7 @@
       bb0: {
           StorageLive(_2);                 // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:9
           _2 = _1;                         // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:9
-          switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:9
+          switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:9
       }
   
       bb1: {
diff --git a/src/test/mir-opt/if_condition_int.dont_opt_floats.SimplifyComparisonIntegral.diff b/src/test/mir-opt/if_condition_int.dont_opt_floats.SimplifyComparisonIntegral.diff
index b22c7eac622..754c6579af0 100644
--- a/src/test/mir-opt/if_condition_int.dont_opt_floats.SimplifyComparisonIntegral.diff
+++ b/src/test/mir-opt/if_condition_int.dont_opt_floats.SimplifyComparisonIntegral.diff
@@ -13,7 +13,7 @@
           _3 = _1;                         // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:9
           _2 = Eq(move _3, const -42f32);  // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:18
           StorageDead(_3);                 // scope 0 at $DIR/if_condition_int.rs:+1:17: +1:18
-          switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:18
+          switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:18
       }
   
       bb1: {
diff --git a/src/test/mir-opt/if_condition_int.dont_remove_comparison.SimplifyComparisonIntegral.diff b/src/test/mir-opt/if_condition_int.dont_remove_comparison.SimplifyComparisonIntegral.diff
index cc0995f99cf..ff23839e291 100644
--- a/src/test/mir-opt/if_condition_int.dont_remove_comparison.SimplifyComparisonIntegral.diff
+++ b/src/test/mir-opt/if_condition_int.dont_remove_comparison.SimplifyComparisonIntegral.diff
@@ -20,10 +20,10 @@
           _3 = _1;                         // scope 0 at $DIR/if_condition_int.rs:+1:13: +1:14
 -         _2 = Eq(move _3, const 17_i8);   // scope 0 at $DIR/if_condition_int.rs:+1:13: +1:20
 -         StorageDead(_3);                 // scope 0 at $DIR/if_condition_int.rs:+1:19: +1:20
--         switchInt(_2) -> [false: bb2, otherwise: bb1]; // scope 1 at $DIR/if_condition_int.rs:+2:5: +2:12
+-         switchInt(_2) -> [0: bb2, otherwise: bb1]; // scope 1 at $DIR/if_condition_int.rs:+2:5: +2:12
 +         _2 = Eq(_3, const 17_i8);        // scope 0 at $DIR/if_condition_int.rs:+1:13: +1:20
 +         nop;                             // scope 0 at $DIR/if_condition_int.rs:+1:19: +1:20
-+         switchInt(move _3) -> [17_i8: bb1, otherwise: bb2]; // scope 1 at $DIR/if_condition_int.rs:+2:5: +2:12
++         switchInt(move _3) -> [17: bb1, otherwise: bb2]; // scope 1 at $DIR/if_condition_int.rs:+2:5: +2:12
       }
   
       bb1: {
diff --git a/src/test/mir-opt/if_condition_int.opt_char.SimplifyComparisonIntegral.diff b/src/test/mir-opt/if_condition_int.opt_char.SimplifyComparisonIntegral.diff
index 801ea040203..5964d76a4b9 100644
--- a/src/test/mir-opt/if_condition_int.opt_char.SimplifyComparisonIntegral.diff
+++ b/src/test/mir-opt/if_condition_int.opt_char.SimplifyComparisonIntegral.diff
@@ -13,10 +13,10 @@
           _3 = _1;                         // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:9
 -         _2 = Eq(move _3, const 'x');     // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:16
 -         StorageDead(_3);                 // scope 0 at $DIR/if_condition_int.rs:+1:15: +1:16
--         switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:16
+-         switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:16
 +         nop;                             // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:16
 +         nop;                             // scope 0 at $DIR/if_condition_int.rs:+1:15: +1:16
-+         switchInt(move _3) -> ['x': bb1, otherwise: bb2]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:16
++         switchInt(move _3) -> [120: bb1, otherwise: bb2]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:16
       }
   
       bb1: {
diff --git a/src/test/mir-opt/if_condition_int.opt_i8.SimplifyComparisonIntegral.diff b/src/test/mir-opt/if_condition_int.opt_i8.SimplifyComparisonIntegral.diff
index 4297f4d6466..98918cc743c 100644
--- a/src/test/mir-opt/if_condition_int.opt_i8.SimplifyComparisonIntegral.diff
+++ b/src/test/mir-opt/if_condition_int.opt_i8.SimplifyComparisonIntegral.diff
@@ -13,10 +13,10 @@
           _3 = _1;                         // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:9
 -         _2 = Eq(move _3, const 42_i8);   // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
 -         StorageDead(_3);                 // scope 0 at $DIR/if_condition_int.rs:+1:14: +1:15
--         switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
+-         switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
 +         nop;                             // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
 +         nop;                             // scope 0 at $DIR/if_condition_int.rs:+1:14: +1:15
-+         switchInt(move _3) -> [42_i8: bb1, otherwise: bb2]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
++         switchInt(move _3) -> [42: bb1, otherwise: bb2]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
       }
   
       bb1: {
diff --git a/src/test/mir-opt/if_condition_int.opt_multiple_ifs.SimplifyComparisonIntegral.diff b/src/test/mir-opt/if_condition_int.opt_multiple_ifs.SimplifyComparisonIntegral.diff
index 8fb794abbd4..db38140b8d0 100644
--- a/src/test/mir-opt/if_condition_int.opt_multiple_ifs.SimplifyComparisonIntegral.diff
+++ b/src/test/mir-opt/if_condition_int.opt_multiple_ifs.SimplifyComparisonIntegral.diff
@@ -15,10 +15,10 @@
           _3 = _1;                         // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:9
 -         _2 = Eq(move _3, const 42_u32);  // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
 -         StorageDead(_3);                 // scope 0 at $DIR/if_condition_int.rs:+1:14: +1:15
--         switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
+-         switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
 +         nop;                             // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
 +         nop;                             // scope 0 at $DIR/if_condition_int.rs:+1:14: +1:15
-+         switchInt(move _3) -> [42_u32: bb1, otherwise: bb2]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
++         switchInt(move _3) -> [42: bb1, otherwise: bb2]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
       }
   
       bb1: {
@@ -34,10 +34,10 @@
           _5 = _1;                         // scope 0 at $DIR/if_condition_int.rs:+3:15: +3:16
 -         _4 = Ne(move _5, const 21_u32);  // scope 0 at $DIR/if_condition_int.rs:+3:15: +3:22
 -         StorageDead(_5);                 // scope 0 at $DIR/if_condition_int.rs:+3:21: +3:22
--         switchInt(move _4) -> [false: bb4, otherwise: bb3]; // scope 0 at $DIR/if_condition_int.rs:+3:15: +3:22
+-         switchInt(move _4) -> [0: bb4, otherwise: bb3]; // scope 0 at $DIR/if_condition_int.rs:+3:15: +3:22
 +         nop;                             // scope 0 at $DIR/if_condition_int.rs:+3:15: +3:22
 +         nop;                             // scope 0 at $DIR/if_condition_int.rs:+3:21: +3:22
-+         switchInt(move _5) -> [21_u32: bb4, otherwise: bb3]; // scope 0 at $DIR/if_condition_int.rs:+3:15: +3:22
++         switchInt(move _5) -> [21: bb4, otherwise: bb3]; // scope 0 at $DIR/if_condition_int.rs:+3:15: +3:22
       }
   
       bb3: {
diff --git a/src/test/mir-opt/if_condition_int.opt_negative.SimplifyComparisonIntegral.diff b/src/test/mir-opt/if_condition_int.opt_negative.SimplifyComparisonIntegral.diff
index 992253ea780..1a1ac4caafa 100644
--- a/src/test/mir-opt/if_condition_int.opt_negative.SimplifyComparisonIntegral.diff
+++ b/src/test/mir-opt/if_condition_int.opt_negative.SimplifyComparisonIntegral.diff
@@ -13,10 +13,10 @@
           _3 = _1;                         // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:9
 -         _2 = Eq(move _3, const -42_i32); // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:16
 -         StorageDead(_3);                 // scope 0 at $DIR/if_condition_int.rs:+1:15: +1:16
--         switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:16
+-         switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:16
 +         nop;                             // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:16
 +         nop;                             // scope 0 at $DIR/if_condition_int.rs:+1:15: +1:16
-+         switchInt(move _3) -> [-42_i32: bb1, otherwise: bb2]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:16
++         switchInt(move _3) -> [4294967254: bb1, otherwise: bb2]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:16
       }
   
       bb1: {
diff --git a/src/test/mir-opt/if_condition_int.opt_u32.SimplifyComparisonIntegral.diff b/src/test/mir-opt/if_condition_int.opt_u32.SimplifyComparisonIntegral.diff
index 7cea9472d3a..fc3f50227dc 100644
--- a/src/test/mir-opt/if_condition_int.opt_u32.SimplifyComparisonIntegral.diff
+++ b/src/test/mir-opt/if_condition_int.opt_u32.SimplifyComparisonIntegral.diff
@@ -13,10 +13,10 @@
           _3 = _1;                         // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:9
 -         _2 = Eq(move _3, const 42_u32);  // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
 -         StorageDead(_3);                 // scope 0 at $DIR/if_condition_int.rs:+1:14: +1:15
--         switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
+-         switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
 +         nop;                             // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
 +         nop;                             // scope 0 at $DIR/if_condition_int.rs:+1:14: +1:15
-+         switchInt(move _3) -> [42_u32: bb1, otherwise: bb2]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
++         switchInt(move _3) -> [42: bb1, otherwise: bb2]; // scope 0 at $DIR/if_condition_int.rs:+1:8: +1:15
       }
   
       bb1: {
diff --git a/src/test/mir-opt/inline/inline_diverging.g.Inline.diff b/src/test/mir-opt/inline/inline_diverging.g.Inline.diff
index 1e703a8fd2b..b787a19f4b2 100644
--- a/src/test/mir-opt/inline/inline_diverging.g.Inline.diff
+++ b/src/test/mir-opt/inline/inline_diverging.g.Inline.diff
@@ -19,7 +19,7 @@
           _3 = _1;                         // scope 0 at $DIR/inline_diverging.rs:+1:8: +1:9
           _2 = Gt(move _3, const 0_i32);   // scope 0 at $DIR/inline_diverging.rs:+1:8: +1:13
           StorageDead(_3);                 // scope 0 at $DIR/inline_diverging.rs:+1:12: +1:13
-          switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/inline_diverging.rs:+1:8: +1:13
+          switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/inline_diverging.rs:+1:8: +1:13
       }
   
       bb1: {
diff --git a/src/test/mir-opt/inline/inline_generator.main.Inline.diff b/src/test/mir-opt/inline/inline_generator.main.Inline.diff
index 91bff3d3234..bd21405f14b 100644
--- a/src/test/mir-opt/inline/inline_generator.main.Inline.diff
+++ b/src/test/mir-opt/inline/inline_generator.main.Inline.diff
@@ -72,7 +72,7 @@
 +         _7 = const false;                // scope 0 at $DIR/inline_generator.rs:+1:14: +1:46
 +         _10 = deref_copy (_2.0: &mut [generator@$DIR/inline_generator.rs:15:5: 15:8]); // scope 6 at $DIR/inline_generator.rs:15:5: 15:41
 +         _9 = discriminant((*_10));       // scope 6 at $DIR/inline_generator.rs:15:5: 15:41
-+         switchInt(move _9) -> [0_u32: bb3, 1_u32: bb8, 3_u32: bb7, otherwise: bb9]; // scope 6 at $DIR/inline_generator.rs:15:5: 15:41
++         switchInt(move _9) -> [0: bb3, 1: bb8, 3: bb7, otherwise: bb9]; // scope 6 at $DIR/inline_generator.rs:15:5: 15:41
       }
   
 -     bb3: {
@@ -92,7 +92,7 @@
 + 
 +     bb3: {
 +         StorageLive(_8);                 // scope 6 at $DIR/inline_generator.rs:15:17: 15:39
-+         switchInt(move _7) -> [false: bb5, otherwise: bb4]; // scope 6 at $DIR/inline_generator.rs:15:20: 15:21
++         switchInt(move _7) -> [0: bb5, otherwise: bb4]; // scope 6 at $DIR/inline_generator.rs:15:20: 15:21
 +     }
 + 
 +     bb4: {
diff --git a/src/test/mir-opt/inline/inline_shims.drop.Inline.diff b/src/test/mir-opt/inline/inline_shims.drop.Inline.diff
index 7a54beca233..36ddb189e0d 100644
--- a/src/test/mir-opt/inline/inline_shims.drop.Inline.diff
+++ b/src/test/mir-opt/inline/inline_shims.drop.Inline.diff
@@ -39,7 +39,7 @@
 +         StorageLive(_6);                 // scope 2 at $DIR/inline_shims.rs:+2:14: +2:40
 +         StorageLive(_7);                 // scope 2 at $DIR/inline_shims.rs:+2:14: +2:40
 +         _6 = discriminant((*_5));        // scope 3 at $SRC_DIR/core/src/ptr/mod.rs:LL:COL
-+         switchInt(move _6) -> [0_isize: bb2, otherwise: bb3]; // scope 3 at $SRC_DIR/core/src/ptr/mod.rs:LL:COL
++         switchInt(move _6) -> [0: bb2, otherwise: bb3]; // scope 3 at $SRC_DIR/core/src/ptr/mod.rs:LL:COL
       }
   
       bb2: {
diff --git a/src/test/mir-opt/instrument_coverage.main.InstrumentCoverage.diff b/src/test/mir-opt/instrument_coverage.main.InstrumentCoverage.diff
index 81d5528231d..2f6f5f87efc 100644
--- a/src/test/mir-opt/instrument_coverage.main.InstrumentCoverage.diff
+++ b/src/test/mir-opt/instrument_coverage.main.InstrumentCoverage.diff
@@ -26,7 +26,7 @@
       }
   
       bb3: {
-          switchInt(move _2) -> [false: bb5, otherwise: bb4]; // scope 0 at /the/src/instrument_coverage.rs:+2:12: +2:17
+          switchInt(move _2) -> [0: bb5, otherwise: bb4]; // scope 0 at /the/src/instrument_coverage.rs:+2:12: +2:17
       }
   
       bb4: {
diff --git a/src/test/mir-opt/issue_38669.main.SimplifyCfg-initial.after.mir b/src/test/mir-opt/issue_38669.main.SimplifyCfg-initial.after.mir
index 82210081832..b0d5b291b6c 100644
--- a/src/test/mir-opt/issue_38669.main.SimplifyCfg-initial.after.mir
+++ b/src/test/mir-opt/issue_38669.main.SimplifyCfg-initial.after.mir
@@ -26,7 +26,7 @@ fn main() -> () {
         StorageLive(_3);                 // scope 1 at $DIR/issue_38669.rs:+3:9: +5:10
         StorageLive(_4);                 // scope 1 at $DIR/issue_38669.rs:+3:12: +3:24
         _4 = _1;                         // scope 1 at $DIR/issue_38669.rs:+3:12: +3:24
-        switchInt(move _4) -> [false: bb4, otherwise: bb3]; // scope 1 at $DIR/issue_38669.rs:+3:12: +3:24
+        switchInt(move _4) -> [0: bb4, otherwise: bb3]; // scope 1 at $DIR/issue_38669.rs:+3:12: +3:24
     }
 
     bb3: {
diff --git a/src/test/mir-opt/issue_41110.main.ElaborateDrops.after.mir b/src/test/mir-opt/issue_41110.main.ElaborateDrops.after.mir
index c573ad5a8e4..c2ea3ac502f 100644
--- a/src/test/mir-opt/issue_41110.main.ElaborateDrops.after.mir
+++ b/src/test/mir-opt/issue_41110.main.ElaborateDrops.after.mir
@@ -65,6 +65,6 @@ fn main() -> () {
     }
 
     bb8 (cleanup): {
-        switchInt(_5) -> [false: bb6, otherwise: bb7]; // scope 0 at $DIR/issue_41110.rs:+1:27: +1:28
+        switchInt(_5) -> [0: bb6, otherwise: bb7]; // scope 0 at $DIR/issue_41110.rs:+1:27: +1:28
     }
 }
diff --git a/src/test/mir-opt/issue_41110.test.ElaborateDrops.after.mir b/src/test/mir-opt/issue_41110.test.ElaborateDrops.after.mir
index 470b0323281..82989c3f071 100644
--- a/src/test/mir-opt/issue_41110.test.ElaborateDrops.after.mir
+++ b/src/test/mir-opt/issue_41110.test.ElaborateDrops.after.mir
@@ -96,6 +96,6 @@ fn test() -> () {
     }
 
     bb14 (cleanup): {
-        switchInt(_6) -> [false: bb10, otherwise: bb13]; // scope 0 at $DIR/issue_41110.rs:+5:1: +5:2
+        switchInt(_6) -> [0: bb10, otherwise: bb13]; // scope 0 at $DIR/issue_41110.rs:+5:1: +5:2
     }
 }
diff --git a/src/test/mir-opt/issue_41888.main.ElaborateDrops.after.mir b/src/test/mir-opt/issue_41888.main.ElaborateDrops.after.mir
index 73372c97bea..00504273245 100644
--- a/src/test/mir-opt/issue_41888.main.ElaborateDrops.after.mir
+++ b/src/test/mir-opt/issue_41888.main.ElaborateDrops.after.mir
@@ -33,7 +33,7 @@ fn main() -> () {
     }
 
     bb1: {
-        switchInt(move _2) -> [false: bb7, otherwise: bb2]; // scope 1 at $DIR/issue_41888.rs:+2:8: +2:14
+        switchInt(move _2) -> [0: bb7, otherwise: bb2]; // scope 1 at $DIR/issue_41888.rs:+2:8: +2:14
     }
 
     bb2: {
@@ -52,7 +52,7 @@ fn main() -> () {
     bb4: {
         StorageDead(_3);                 // scope 1 at $DIR/issue_41888.rs:+3:19: +3:20
         _5 = discriminant(_1);           // scope 2 at $DIR/issue_41888.rs:+4:16: +4:24
-        switchInt(move _5) -> [0_isize: bb5, otherwise: bb6]; // scope 2 at $DIR/issue_41888.rs:+4:16: +4:24
+        switchInt(move _5) -> [0: bb5, otherwise: bb6]; // scope 2 at $DIR/issue_41888.rs:+4:16: +4:24
     }
 
     bb5: {
@@ -134,19 +134,19 @@ fn main() -> () {
 
     bb19: {
         _10 = discriminant(_1);          // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
-        switchInt(move _10) -> [0_isize: bb15, otherwise: bb17]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
+        switchInt(move _10) -> [0: bb15, otherwise: bb17]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
     }
 
     bb20: {
-        switchInt(_7) -> [false: bb15, otherwise: bb19]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
+        switchInt(_7) -> [0: bb15, otherwise: bb19]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
     }
 
     bb21 (cleanup): {
         _11 = discriminant(_1);          // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
-        switchInt(move _11) -> [0_isize: bb16, otherwise: bb18]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
+        switchInt(move _11) -> [0: bb16, otherwise: bb18]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
     }
 
     bb22 (cleanup): {
-        switchInt(_7) -> [false: bb12, otherwise: bb21]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
+        switchInt(_7) -> [0: bb12, otherwise: bb21]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
     }
 }
diff --git a/src/test/mir-opt/issue_62289.test.ElaborateDrops.before.mir b/src/test/mir-opt/issue_62289.test.ElaborateDrops.before.mir
index 6969a66ac19..adfa3a7733b 100644
--- a/src/test/mir-opt/issue_62289.test.ElaborateDrops.before.mir
+++ b/src/test/mir-opt/issue_62289.test.ElaborateDrops.before.mir
@@ -52,7 +52,7 @@ fn test() -> Option<Box<u32>> {
     bb2: {
         StorageDead(_7);                 // scope 0 at $DIR/issue_62289.rs:+1:19: +1:20
         _8 = discriminant(_6);           // scope 0 at $DIR/issue_62289.rs:+1:15: +1:20
-        switchInt(move _8) -> [0_isize: bb3, 1_isize: bb5, otherwise: bb4]; // scope 0 at $DIR/issue_62289.rs:+1:15: +1:20
+        switchInt(move _8) -> [0: bb3, 1: bb5, otherwise: bb4]; // scope 0 at $DIR/issue_62289.rs:+1:15: +1:20
     }
 
     bb3: {
diff --git a/src/test/mir-opt/issue_73223.main.SimplifyArmIdentity.diff b/src/test/mir-opt/issue_73223.main.SimplifyArmIdentity.diff
index b88cdfcbc96..17b81633991 100644
--- a/src/test/mir-opt/issue_73223.main.SimplifyArmIdentity.diff
+++ b/src/test/mir-opt/issue_73223.main.SimplifyArmIdentity.diff
@@ -116,7 +116,7 @@
           StorageDead(_17);                // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
           _15 = Not(move _16);             // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
           StorageDead(_16);                // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
-          switchInt(move _15) -> [false: bb5, otherwise: bb4]; // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
+          switchInt(move _15) -> [0: bb5, otherwise: bb4]; // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
       }
   
       bb4: {
diff --git a/src/test/mir-opt/issue_99325.main.built.after.mir b/src/test/mir-opt/issue_99325.main.built.after.mir
index 3db40412b2e..3e035c18db8 100644
--- a/src/test/mir-opt/issue_99325.main.built.after.mir
+++ b/src/test/mir-opt/issue_99325.main.built.after.mir
@@ -109,7 +109,7 @@ fn main() -> () {
         StorageDead(_12);                // scope 1 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
         _10 = Not(move _11);             // scope 1 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
         StorageDead(_11);                // scope 1 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
-        switchInt(move _10) -> [false: bb4, otherwise: bb3]; // scope 1 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
+        switchInt(move _10) -> [0: bb4, otherwise: bb3]; // scope 1 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
     }
 
     bb3: {
@@ -218,7 +218,7 @@ fn main() -> () {
         StorageDead(_33);                // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
         _31 = Not(move _32);             // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
         StorageDead(_32);                // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
-        switchInt(move _31) -> [false: bb13, otherwise: bb12]; // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
+        switchInt(move _31) -> [0: bb13, otherwise: bb12]; // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
     }
 
     bb12: {
diff --git a/src/test/mir-opt/issues/issue_59352.num_to_digit.PreCodegen.after.mir b/src/test/mir-opt/issues/issue_59352.num_to_digit.PreCodegen.after.mir
index 5a2f4feff35..e0d6b58f229 100644
--- a/src/test/mir-opt/issues/issue_59352.num_to_digit.PreCodegen.after.mir
+++ b/src/test/mir-opt/issues/issue_59352.num_to_digit.PreCodegen.after.mir
@@ -47,7 +47,7 @@ fn num_to_digit(_1: char) -> u32 {
 
     bb2: {
         _7 = discriminant(_2);           // scope 3 at $SRC_DIR/core/src/option.rs:LL:COL
-        switchInt(move _7) -> [0_isize: bb6, 1_isize: bb8, otherwise: bb7]; // scope 3 at $SRC_DIR/core/src/option.rs:LL:COL
+        switchInt(move _7) -> [0: bb6, 1: bb8, otherwise: bb7]; // scope 3 at $SRC_DIR/core/src/option.rs:LL:COL
     }
 
     bb3: {
@@ -66,7 +66,7 @@ fn num_to_digit(_1: char) -> u32 {
         StorageDead(_4);                 // scope 1 at $SRC_DIR/core/src/char/methods.rs:LL:COL
         StorageDead(_5);                 // scope 1 at $SRC_DIR/core/src/char/methods.rs:LL:COL
         StorageDead(_3);                 // scope 0 at $DIR/issue_59352.rs:+2:8: +2:23
-        switchInt(move _9) -> [1_isize: bb1, otherwise: bb3]; // scope 0 at $DIR/issue_59352.rs:+2:8: +2:23
+        switchInt(move _9) -> [1: bb1, otherwise: bb3]; // scope 0 at $DIR/issue_59352.rs:+2:8: +2:23
     }
 
     bb6: {
diff --git a/src/test/mir-opt/issues/issue_75439.foo.MatchBranchSimplification.diff b/src/test/mir-opt/issues/issue_75439.foo.MatchBranchSimplification.diff
index 87066cc62c0..1c69a6232d6 100644
--- a/src/test/mir-opt/issues/issue_75439.foo.MatchBranchSimplification.diff
+++ b/src/test/mir-opt/issues/issue_75439.foo.MatchBranchSimplification.diff
@@ -32,15 +32,15 @@
   
       bb1: {
           StorageDead(_3);                 // scope 2 at $DIR/issue_75439.rs:+2:52: +2:53
-          switchInt(_2[0 of 4]) -> [0_u32: bb2, otherwise: bb8]; // scope 3 at $DIR/issue_75439.rs:+4:12: +4:30
+          switchInt(_2[0 of 4]) -> [0: bb2, otherwise: bb8]; // scope 3 at $DIR/issue_75439.rs:+4:12: +4:30
       }
   
       bb2: {
-          switchInt(_2[1 of 4]) -> [0_u32: bb3, otherwise: bb8]; // scope 3 at $DIR/issue_75439.rs:+4:12: +4:30
+          switchInt(_2[1 of 4]) -> [0: bb3, otherwise: bb8]; // scope 3 at $DIR/issue_75439.rs:+4:12: +4:30
       }
   
       bb3: {
-          switchInt(_2[2 of 4]) -> [0_u32: bb5, 4294901760_u32: bb6, otherwise: bb8]; // scope 3 at $DIR/issue_75439.rs:+4:12: +4:30
+          switchInt(_2[2 of 4]) -> [0: bb5, 4294901760: bb6, otherwise: bb8]; // scope 3 at $DIR/issue_75439.rs:+4:12: +4:30
       }
   
       bb4: {
diff --git a/src/test/mir-opt/loop_test.main.SimplifyCfg-promote-consts.after.mir b/src/test/mir-opt/loop_test.main.SimplifyCfg-promote-consts.after.mir
index 5981ab885f9..4ee2dae49b3 100644
--- a/src/test/mir-opt/loop_test.main.SimplifyCfg-promote-consts.after.mir
+++ b/src/test/mir-opt/loop_test.main.SimplifyCfg-promote-consts.after.mir
@@ -16,7 +16,7 @@ fn main() -> () {
         StorageLive(_1);                 // scope 0 at $DIR/loop_test.rs:+4:5: +6:6
         StorageLive(_2);                 // scope 0 at $DIR/loop_test.rs:+4:8: +4:12
         _2 = const true;                 // scope 0 at $DIR/loop_test.rs:+4:8: +4:12
-        switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/loop_test.rs:+4:8: +4:12
+        switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/loop_test.rs:+4:8: +4:12
     }
 
     bb1: {
diff --git a/src/test/mir-opt/lower_array_len.array_bound.NormalizeArrayLen.diff b/src/test/mir-opt/lower_array_len.array_bound.NormalizeArrayLen.diff
index 049bbeac867..9bc7060e958 100644
--- a/src/test/mir-opt/lower_array_len.array_bound.NormalizeArrayLen.diff
+++ b/src/test/mir-opt/lower_array_len.array_bound.NormalizeArrayLen.diff
@@ -38,7 +38,7 @@
           _3 = Lt(move _4, move _5);       // scope 0 at $DIR/lower_array_len.rs:+1:8: +1:27
           StorageDead(_5);                 // scope 0 at $DIR/lower_array_len.rs:+1:26: +1:27
           StorageDead(_4);                 // scope 0 at $DIR/lower_array_len.rs:+1:26: +1:27
-          switchInt(move _3) -> [false: bb4, otherwise: bb2]; // scope 0 at $DIR/lower_array_len.rs:+1:8: +1:27
+          switchInt(move _3) -> [0: bb4, otherwise: bb2]; // scope 0 at $DIR/lower_array_len.rs:+1:8: +1:27
       }
   
       bb2: {
diff --git a/src/test/mir-opt/lower_array_len.array_bound_mut.NormalizeArrayLen.diff b/src/test/mir-opt/lower_array_len.array_bound_mut.NormalizeArrayLen.diff
index 40ec01eeb41..cf427cfd1e6 100644
--- a/src/test/mir-opt/lower_array_len.array_bound_mut.NormalizeArrayLen.diff
+++ b/src/test/mir-opt/lower_array_len.array_bound_mut.NormalizeArrayLen.diff
@@ -41,7 +41,7 @@
           _3 = Lt(move _4, move _5);       // scope 0 at $DIR/lower_array_len.rs:+1:8: +1:27
           StorageDead(_5);                 // scope 0 at $DIR/lower_array_len.rs:+1:26: +1:27
           StorageDead(_4);                 // scope 0 at $DIR/lower_array_len.rs:+1:26: +1:27
-          switchInt(move _3) -> [false: bb4, otherwise: bb2]; // scope 0 at $DIR/lower_array_len.rs:+1:8: +1:27
+          switchInt(move _3) -> [0: bb4, otherwise: bb2]; // scope 0 at $DIR/lower_array_len.rs:+1:8: +1:27
       }
   
       bb2: {
diff --git a/src/test/mir-opt/lower_array_len_e2e.array_bound.PreCodegen.after.mir b/src/test/mir-opt/lower_array_len_e2e.array_bound.PreCodegen.after.mir
index 9b1b07f38fc..701c2ad705a 100644
--- a/src/test/mir-opt/lower_array_len_e2e.array_bound.PreCodegen.after.mir
+++ b/src/test/mir-opt/lower_array_len_e2e.array_bound.PreCodegen.after.mir
@@ -19,7 +19,7 @@ fn array_bound(_1: usize, _2: &[u8; N]) -> u8 {
         _3 = Lt(move _4, move _5);       // scope 0 at $DIR/lower_array_len_e2e.rs:+1:8: +1:27
         StorageDead(_5);                 // scope 0 at $DIR/lower_array_len_e2e.rs:+1:26: +1:27
         StorageDead(_4);                 // scope 0 at $DIR/lower_array_len_e2e.rs:+1:26: +1:27
-        switchInt(move _3) -> [false: bb3, otherwise: bb1]; // scope 0 at $DIR/lower_array_len_e2e.rs:+1:8: +1:27
+        switchInt(move _3) -> [0: bb3, otherwise: bb1]; // scope 0 at $DIR/lower_array_len_e2e.rs:+1:8: +1:27
     }
 
     bb1: {
diff --git a/src/test/mir-opt/lower_array_len_e2e.array_bound_mut.PreCodegen.after.mir b/src/test/mir-opt/lower_array_len_e2e.array_bound_mut.PreCodegen.after.mir
index 29e379777b0..0440cfce289 100644
--- a/src/test/mir-opt/lower_array_len_e2e.array_bound_mut.PreCodegen.after.mir
+++ b/src/test/mir-opt/lower_array_len_e2e.array_bound_mut.PreCodegen.after.mir
@@ -22,7 +22,7 @@ fn array_bound_mut(_1: usize, _2: &mut [u8; N]) -> u8 {
         _3 = Lt(move _4, move _5);       // scope 0 at $DIR/lower_array_len_e2e.rs:+1:8: +1:27
         StorageDead(_5);                 // scope 0 at $DIR/lower_array_len_e2e.rs:+1:26: +1:27
         StorageDead(_4);                 // scope 0 at $DIR/lower_array_len_e2e.rs:+1:26: +1:27
-        switchInt(move _3) -> [false: bb3, otherwise: bb1]; // scope 0 at $DIR/lower_array_len_e2e.rs:+1:8: +1:27
+        switchInt(move _3) -> [0: bb3, otherwise: bb1]; // scope 0 at $DIR/lower_array_len_e2e.rs:+1:8: +1:27
     }
 
     bb1: {
diff --git a/src/test/mir-opt/lower_slice_len.bound.LowerSliceLenCalls.diff b/src/test/mir-opt/lower_slice_len.bound.LowerSliceLenCalls.diff
index 5f5d6e68fdc..2b0370cf358 100644
--- a/src/test/mir-opt/lower_slice_len.bound.LowerSliceLenCalls.diff
+++ b/src/test/mir-opt/lower_slice_len.bound.LowerSliceLenCalls.diff
@@ -33,7 +33,7 @@
           _3 = Lt(move _4, move _5);       // scope 0 at $DIR/lower_slice_len.rs:+1:8: +1:27
           StorageDead(_5);                 // scope 0 at $DIR/lower_slice_len.rs:+1:26: +1:27
           StorageDead(_4);                 // scope 0 at $DIR/lower_slice_len.rs:+1:26: +1:27
-          switchInt(move _3) -> [false: bb4, otherwise: bb2]; // scope 0 at $DIR/lower_slice_len.rs:+1:8: +1:27
+          switchInt(move _3) -> [0: bb4, otherwise: bb2]; // scope 0 at $DIR/lower_slice_len.rs:+1:8: +1:27
       }
   
       bb2: {
diff --git a/src/test/mir-opt/match_arm_scopes.complicated_match.SimplifyCfg-initial.after-ElaborateDrops.after.diff b/src/test/mir-opt/match_arm_scopes.complicated_match.SimplifyCfg-initial.after-ElaborateDrops.after.diff
index d3db3b18271..84e4d35f908 100644
--- a/src/test/mir-opt/match_arm_scopes.complicated_match.SimplifyCfg-initial.after-ElaborateDrops.after.diff
+++ b/src/test/mir-opt/match_arm_scopes.complicated_match.SimplifyCfg-initial.after-ElaborateDrops.after.diff
@@ -32,18 +32,18 @@
   
       bb0: {
 -         FakeRead(ForMatchedPlace(None), _2); // scope 0 at $DIR/match_arm_scopes.rs:+1:11: +1:16
--         switchInt((_2.0: bool)) -> [false: bb1, otherwise: bb2]; // scope 0 at $DIR/match_arm_scopes.rs:+1:5: +1:16
-+         switchInt((_2.0: bool)) -> [false: bb5, otherwise: bb1]; // scope 0 at $DIR/match_arm_scopes.rs:+1:5: +1:16
+-         switchInt((_2.0: bool)) -> [0: bb1, otherwise: bb2]; // scope 0 at $DIR/match_arm_scopes.rs:+1:5: +1:16
++         switchInt((_2.0: bool)) -> [0: bb5, otherwise: bb1]; // scope 0 at $DIR/match_arm_scopes.rs:+1:5: +1:16
       }
   
       bb1: {
 -         falseEdge -> [real: bb8, imaginary: bb3]; // scope 0 at $DIR/match_arm_scopes.rs:+2:9: +2:22
-+         switchInt((_2.1: bool)) -> [false: bb10, otherwise: bb2]; // scope 0 at $DIR/match_arm_scopes.rs:+1:5: +1:16
++         switchInt((_2.1: bool)) -> [0: bb10, otherwise: bb2]; // scope 0 at $DIR/match_arm_scopes.rs:+1:5: +1:16
       }
   
       bb2: {
--         switchInt((_2.1: bool)) -> [false: bb3, otherwise: bb4]; // scope 0 at $DIR/match_arm_scopes.rs:+1:5: +1:16
-+         switchInt((_2.0: bool)) -> [false: bb3, otherwise: bb17]; // scope 0 at $DIR/match_arm_scopes.rs:+1:5: +1:16
+-         switchInt((_2.1: bool)) -> [0: bb3, otherwise: bb4]; // scope 0 at $DIR/match_arm_scopes.rs:+1:5: +1:16
++         switchInt((_2.0: bool)) -> [0: bb3, otherwise: bb17]; // scope 0 at $DIR/match_arm_scopes.rs:+1:5: +1:16
       }
   
       bb3: {
@@ -51,7 +51,7 @@
 -     }
 - 
 -     bb4: {
--         switchInt((_2.0: bool)) -> [false: bb6, otherwise: bb5]; // scope 0 at $DIR/match_arm_scopes.rs:+1:5: +1:16
+-         switchInt((_2.0: bool)) -> [0: bb6, otherwise: bb5]; // scope 0 at $DIR/match_arm_scopes.rs:+1:5: +1:16
 -     }
 - 
 -     bb5: {
@@ -85,8 +85,8 @@
           StorageLive(_9);                 // scope 0 at $DIR/match_arm_scopes.rs:+2:42: +2:73
           StorageLive(_10);                // scope 0 at $DIR/match_arm_scopes.rs:+2:45: +2:49
           _10 = _1;                        // scope 0 at $DIR/match_arm_scopes.rs:+2:45: +2:49
--         switchInt(move _10) -> [false: bb10, otherwise: bb9]; // scope 0 at $DIR/match_arm_scopes.rs:+2:45: +2:49
-+         switchInt(move _10) -> [false: bb7, otherwise: bb6]; // scope 0 at $DIR/match_arm_scopes.rs:+2:45: +2:49
+-         switchInt(move _10) -> [0: bb10, otherwise: bb9]; // scope 0 at $DIR/match_arm_scopes.rs:+2:45: +2:49
++         switchInt(move _10) -> [0: bb7, otherwise: bb6]; // scope 0 at $DIR/match_arm_scopes.rs:+2:45: +2:49
       }
   
 -     bb9: {
@@ -101,8 +101,8 @@
 -     bb10: {
 +     bb7: {
           _9 = (*_6);                      // scope 0 at $DIR/match_arm_scopes.rs:+2:70: +2:71
--         switchInt(move _9) -> [false: bb12, otherwise: bb11]; // scope 0 at $DIR/match_arm_scopes.rs:+2:42: +2:73
-+         switchInt(move _9) -> [false: bb9, otherwise: bb8]; // scope 0 at $DIR/match_arm_scopes.rs:+2:42: +2:73
+-         switchInt(move _9) -> [0: bb12, otherwise: bb11]; // scope 0 at $DIR/match_arm_scopes.rs:+2:42: +2:73
++         switchInt(move _9) -> [0: bb9, otherwise: bb8]; // scope 0 at $DIR/match_arm_scopes.rs:+2:42: +2:73
       }
   
 -     bb11: {
@@ -142,8 +142,8 @@
           StorageLive(_12);                // scope 0 at $DIR/match_arm_scopes.rs:+2:42: +2:73
           StorageLive(_13);                // scope 0 at $DIR/match_arm_scopes.rs:+2:45: +2:49
           _13 = _1;                        // scope 0 at $DIR/match_arm_scopes.rs:+2:45: +2:49
--         switchInt(move _13) -> [false: bb15, otherwise: bb14]; // scope 0 at $DIR/match_arm_scopes.rs:+2:45: +2:49
-+         switchInt(move _13) -> [false: bb12, otherwise: bb11]; // scope 0 at $DIR/match_arm_scopes.rs:+2:45: +2:49
+-         switchInt(move _13) -> [0: bb15, otherwise: bb14]; // scope 0 at $DIR/match_arm_scopes.rs:+2:45: +2:49
++         switchInt(move _13) -> [0: bb12, otherwise: bb11]; // scope 0 at $DIR/match_arm_scopes.rs:+2:45: +2:49
       }
   
 -     bb14: {
@@ -158,8 +158,8 @@
 -     bb15: {
 +     bb12: {
           _12 = (*_6);                     // scope 0 at $DIR/match_arm_scopes.rs:+2:70: +2:71
--         switchInt(move _12) -> [false: bb17, otherwise: bb16]; // scope 0 at $DIR/match_arm_scopes.rs:+2:42: +2:73
-+         switchInt(move _12) -> [false: bb14, otherwise: bb13]; // scope 0 at $DIR/match_arm_scopes.rs:+2:42: +2:73
+-         switchInt(move _12) -> [0: bb17, otherwise: bb16]; // scope 0 at $DIR/match_arm_scopes.rs:+2:42: +2:73
++         switchInt(move _12) -> [0: bb14, otherwise: bb13]; // scope 0 at $DIR/match_arm_scopes.rs:+2:42: +2:73
       }
   
 -     bb16: {
diff --git a/src/test/mir-opt/match_test.main.SimplifyCfg-initial.after.mir b/src/test/mir-opt/match_test.main.SimplifyCfg-initial.after.mir
index b184ffc404e..d51dbf4258c 100644
--- a/src/test/mir-opt/match_test.main.SimplifyCfg-initial.after.mir
+++ b/src/test/mir-opt/match_test.main.SimplifyCfg-initial.after.mir
@@ -28,12 +28,12 @@ fn main() -> () {
         StorageLive(_3);                 // scope 2 at $DIR/match_test.rs:+6:5: +11:6
         FakeRead(ForMatchedPlace(None), _1); // scope 2 at $DIR/match_test.rs:+6:11: +6:12
         _6 = Le(const 0_i32, _1);        // scope 2 at $DIR/match_test.rs:+7:9: +7:14
-        switchInt(move _6) -> [false: bb4, otherwise: bb1]; // scope 2 at $DIR/match_test.rs:+7:9: +7:14
+        switchInt(move _6) -> [0: bb4, otherwise: bb1]; // scope 2 at $DIR/match_test.rs:+7:9: +7:14
     }
 
     bb1: {
         _7 = Lt(_1, const 10_i32);       // scope 2 at $DIR/match_test.rs:+7:9: +7:14
-        switchInt(move _7) -> [false: bb4, otherwise: bb2]; // scope 2 at $DIR/match_test.rs:+7:9: +7:14
+        switchInt(move _7) -> [0: bb4, otherwise: bb2]; // scope 2 at $DIR/match_test.rs:+7:9: +7:14
     }
 
     bb2: {
@@ -47,12 +47,12 @@ fn main() -> () {
 
     bb4: {
         _4 = Le(const 10_i32, _1);       // scope 2 at $DIR/match_test.rs:+8:9: +8:16
-        switchInt(move _4) -> [false: bb7, otherwise: bb5]; // scope 2 at $DIR/match_test.rs:+8:9: +8:16
+        switchInt(move _4) -> [0: bb7, otherwise: bb5]; // scope 2 at $DIR/match_test.rs:+8:9: +8:16
     }
 
     bb5: {
         _5 = Le(_1, const 20_i32);       // scope 2 at $DIR/match_test.rs:+8:9: +8:16
-        switchInt(move _5) -> [false: bb7, otherwise: bb6]; // scope 2 at $DIR/match_test.rs:+8:9: +8:16
+        switchInt(move _5) -> [0: bb7, otherwise: bb6]; // scope 2 at $DIR/match_test.rs:+8:9: +8:16
     }
 
     bb6: {
@@ -60,7 +60,7 @@ fn main() -> () {
     }
 
     bb7: {
-        switchInt(_1) -> [-1_i32: bb8, otherwise: bb3]; // scope 2 at $DIR/match_test.rs:+6:5: +6:12
+        switchInt(_1) -> [4294967295: bb8, otherwise: bb3]; // scope 2 at $DIR/match_test.rs:+6:5: +6:12
     }
 
     bb8: {
@@ -71,7 +71,7 @@ fn main() -> () {
         _8 = &shallow _1;                // scope 2 at $DIR/match_test.rs:+6:11: +6:12
         StorageLive(_9);                 // scope 2 at $DIR/match_test.rs:+7:18: +7:19
         _9 = _2;                         // scope 2 at $DIR/match_test.rs:+7:18: +7:19
-        switchInt(move _9) -> [false: bb11, otherwise: bb10]; // scope 2 at $DIR/match_test.rs:+7:18: +7:19
+        switchInt(move _9) -> [0: bb11, otherwise: bb10]; // scope 2 at $DIR/match_test.rs:+7:18: +7:19
     }
 
     bb10: {
diff --git a/src/test/mir-opt/matches_reduce_branches.bar.MatchBranchSimplification.diff b/src/test/mir-opt/matches_reduce_branches.bar.MatchBranchSimplification.diff
index f9eeb1ea5b9..be91b0bfe68 100644
--- a/src/test/mir-opt/matches_reduce_branches.bar.MatchBranchSimplification.diff
+++ b/src/test/mir-opt/matches_reduce_branches.bar.MatchBranchSimplification.diff
@@ -33,7 +33,7 @@
           StorageLive(_4);                 // scope 2 at $DIR/matches_reduce_branches.rs:+3:9: +3:10
           StorageLive(_5);                 // scope 3 at $DIR/matches_reduce_branches.rs:+4:9: +4:10
           StorageLive(_6);                 // scope 4 at $DIR/matches_reduce_branches.rs:+6:5: +21:6
--         switchInt(_1) -> [7_i32: bb2, otherwise: bb1]; // scope 4 at $DIR/matches_reduce_branches.rs:+6:5: +6:12
+-         switchInt(_1) -> [7: bb2, otherwise: bb1]; // scope 4 at $DIR/matches_reduce_branches.rs:+6:5: +6:12
 -     }
 - 
 -     bb1: {
diff --git a/src/test/mir-opt/matches_reduce_branches.foo.MatchBranchSimplification.diff b/src/test/mir-opt/matches_reduce_branches.foo.MatchBranchSimplification.diff
index 0b40b3be8bd..aa8092ece66 100644
--- a/src/test/mir-opt/matches_reduce_branches.foo.MatchBranchSimplification.diff
+++ b/src/test/mir-opt/matches_reduce_branches.foo.MatchBranchSimplification.diff
@@ -11,12 +11,12 @@
       bb0: {
           StorageLive(_2);                 // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
           _3 = discriminant(_1);           // scope 0 at $DIR/matches_reduce_branches.rs:+1:17: +1:20
--         switchInt(move _3) -> [0_isize: bb2, otherwise: bb1]; // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
+-         switchInt(move _3) -> [0: bb2, otherwise: bb1]; // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
 +         StorageLive(_4);                 // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
 +         _4 = move _3;                    // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
 +         _2 = Eq(_4, const 0_isize);      // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
 +         StorageDead(_4);                 // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
-+         switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
++         switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
       }
   
       bb1: {
@@ -30,7 +30,7 @@
 -     }
 - 
 -     bb3: {
--         switchInt(move _2) -> [false: bb5, otherwise: bb4]; // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
+-         switchInt(move _2) -> [0: bb5, otherwise: bb4]; // scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
 -     }
 - 
 -     bb4: {
diff --git a/src/test/mir-opt/matches_reduce_branches.match_nested_if.MatchBranchSimplification.diff b/src/test/mir-opt/matches_reduce_branches.match_nested_if.MatchBranchSimplification.diff
index b8c7722cd37..193104dd30e 100644
--- a/src/test/mir-opt/matches_reduce_branches.match_nested_if.MatchBranchSimplification.diff
+++ b/src/test/mir-opt/matches_reduce_branches.match_nested_if.MatchBranchSimplification.diff
@@ -26,7 +26,7 @@
           StorageLive(_5);                 // scope 0 at $DIR/matches_reduce_branches.rs:+2:21: +2:52
           StorageLive(_6);                 // scope 0 at $DIR/matches_reduce_branches.rs:+2:24: +2:28
           _6 = const true;                 // scope 0 at $DIR/matches_reduce_branches.rs:+2:24: +2:28
--         switchInt(move _6) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/matches_reduce_branches.rs:+2:24: +2:28
+-         switchInt(move _6) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/matches_reduce_branches.rs:+2:24: +2:28
 -     }
 - 
 -     bb1: {
@@ -45,7 +45,7 @@
 +         _5 = Ne(_7, const false);        // scope 0 at $DIR/matches_reduce_branches.rs:+2:45: +2:50
 +         StorageDead(_7);                 // scope 0 at $DIR/matches_reduce_branches.rs:+2:24: +2:28
           StorageDead(_6);                 // scope 0 at $DIR/matches_reduce_branches.rs:+2:51: +2:52
--         switchInt(move _5) -> [false: bb5, otherwise: bb4]; // scope 0 at $DIR/matches_reduce_branches.rs:+2:21: +2:52
+-         switchInt(move _5) -> [0: bb5, otherwise: bb4]; // scope 0 at $DIR/matches_reduce_branches.rs:+2:21: +2:52
 -     }
 - 
 -     bb4: {
@@ -64,7 +64,7 @@
 +         _4 = Ne(_8, const false);        // scope 0 at $DIR/matches_reduce_branches.rs:+2:69: +2:74
 +         StorageDead(_8);                 // scope 0 at $DIR/matches_reduce_branches.rs:+2:21: +2:52
           StorageDead(_5);                 // scope 0 at $DIR/matches_reduce_branches.rs:+2:75: +2:76
--         switchInt(move _4) -> [false: bb8, otherwise: bb7]; // scope 0 at $DIR/matches_reduce_branches.rs:+2:18: +2:76
+-         switchInt(move _4) -> [0: bb8, otherwise: bb7]; // scope 0 at $DIR/matches_reduce_branches.rs:+2:18: +2:76
 -     }
 - 
 -     bb7: {
@@ -78,7 +78,7 @@
 -     }
 - 
 -     bb9: {
--         switchInt(move _3) -> [false: bb11, otherwise: bb10]; // scope 0 at $DIR/matches_reduce_branches.rs:+2:15: +6:10
+-         switchInt(move _3) -> [0: bb11, otherwise: bb10]; // scope 0 at $DIR/matches_reduce_branches.rs:+2:15: +6:10
 -     }
 - 
 -     bb10: {
diff --git a/src/test/mir-opt/matches_u8.exhaustive_match.MatchBranchSimplification.diff b/src/test/mir-opt/matches_u8.exhaustive_match.MatchBranchSimplification.diff
index 1b4dddc1d43..3766d99a43b 100644
--- a/src/test/mir-opt/matches_u8.exhaustive_match.MatchBranchSimplification.diff
+++ b/src/test/mir-opt/matches_u8.exhaustive_match.MatchBranchSimplification.diff
@@ -8,7 +8,7 @@
   
       bb0: {
           _2 = discriminant(_1);           // scope 0 at $DIR/matches_u8.rs:+1:11: +1:12
-          switchInt(move _2) -> [0_isize: bb3, 1_isize: bb1, otherwise: bb2]; // scope 0 at $DIR/matches_u8.rs:+1:5: +1:12
+          switchInt(move _2) -> [0: bb3, 1: bb1, otherwise: bb2]; // scope 0 at $DIR/matches_u8.rs:+1:5: +1:12
       }
   
       bb1: {
diff --git a/src/test/mir-opt/matches_u8.exhaustive_match_i8.MatchBranchSimplification.diff b/src/test/mir-opt/matches_u8.exhaustive_match_i8.MatchBranchSimplification.diff
index 6e734852e1a..b5146cd539f 100644
--- a/src/test/mir-opt/matches_u8.exhaustive_match_i8.MatchBranchSimplification.diff
+++ b/src/test/mir-opt/matches_u8.exhaustive_match_i8.MatchBranchSimplification.diff
@@ -8,7 +8,7 @@
   
       bb0: {
           _2 = discriminant(_1);           // scope 0 at $DIR/matches_u8.rs:+1:11: +1:12
-          switchInt(move _2) -> [0_isize: bb3, 1_isize: bb1, otherwise: bb2]; // scope 0 at $DIR/matches_u8.rs:+1:5: +1:12
+          switchInt(move _2) -> [0: bb3, 1: bb1, otherwise: bb2]; // scope 0 at $DIR/matches_u8.rs:+1:5: +1:12
       }
   
       bb1: {
diff --git a/src/test/mir-opt/nll/region_subtyping_basic.main.nll.0.32bit.mir b/src/test/mir-opt/nll/region_subtyping_basic.main.nll.0.32bit.mir
index 3e3fda6141a..8e6564a38b0 100644
--- a/src/test/mir-opt/nll/region_subtyping_basic.main.nll.0.32bit.mir
+++ b/src/test/mir-opt/nll/region_subtyping_basic.main.nll.0.32bit.mir
@@ -62,7 +62,7 @@ fn main() -> () {
         FakeRead(ForLet(None), _6);      // bb1[4]: scope 2 at $DIR/region_subtyping_basic.rs:+3:9: +3:10
         StorageLive(_7);                 // bb1[5]: scope 3 at $DIR/region_subtyping_basic.rs:+4:8: +4:12
         _7 = const ConstValue(Scalar(0x01): bool); // bb1[6]: scope 3 at $DIR/region_subtyping_basic.rs:+4:8: +4:12
-        switchInt(move _7) -> [ConstValue(Scalar(0x00): bool): bb4, otherwise: bb2]; // bb1[7]: scope 3 at $DIR/region_subtyping_basic.rs:+4:8: +4:12
+        switchInt(move _7) -> [0: bb4, otherwise: bb2]; // bb1[7]: scope 3 at $DIR/region_subtyping_basic.rs:+4:8: +4:12
     }
 
     bb2: {
diff --git a/src/test/mir-opt/nll/region_subtyping_basic.main.nll.0.64bit.mir b/src/test/mir-opt/nll/region_subtyping_basic.main.nll.0.64bit.mir
index 39a53702a4c..74d44c6741a 100644
--- a/src/test/mir-opt/nll/region_subtyping_basic.main.nll.0.64bit.mir
+++ b/src/test/mir-opt/nll/region_subtyping_basic.main.nll.0.64bit.mir
@@ -62,7 +62,7 @@ fn main() -> () {
         FakeRead(ForLet(None), _6);      // bb1[4]: scope 2 at $DIR/region_subtyping_basic.rs:+3:9: +3:10
         StorageLive(_7);                 // bb1[5]: scope 3 at $DIR/region_subtyping_basic.rs:+4:8: +4:12
         _7 = const ConstValue(Scalar(0x01): bool); // bb1[6]: scope 3 at $DIR/region_subtyping_basic.rs:+4:8: +4:12
-        switchInt(move _7) -> [ConstValue(Scalar(0x00): bool): bb4, otherwise: bb2]; // bb1[7]: scope 3 at $DIR/region_subtyping_basic.rs:+4:8: +4:12
+        switchInt(move _7) -> [0: bb4, otherwise: bb2]; // bb1[7]: scope 3 at $DIR/region_subtyping_basic.rs:+4:8: +4:12
     }
 
     bb2: {
diff --git a/src/test/mir-opt/no_drop_for_inactive_variant.unwrap.SimplifyCfg-elaborate-drops.after.mir b/src/test/mir-opt/no_drop_for_inactive_variant.unwrap.SimplifyCfg-elaborate-drops.after.mir
index e708255cea4..69327b7afac 100644
--- a/src/test/mir-opt/no_drop_for_inactive_variant.unwrap.SimplifyCfg-elaborate-drops.after.mir
+++ b/src/test/mir-opt/no_drop_for_inactive_variant.unwrap.SimplifyCfg-elaborate-drops.after.mir
@@ -15,7 +15,7 @@ fn unwrap(_1: Option<T>) -> T {
 
     bb0: {
         _2 = discriminant(_1);           // scope 0 at $DIR/no_drop_for_inactive_variant.rs:+1:11: +1:14
-        switchInt(move _2) -> [0_isize: bb1, 1_isize: bb3, otherwise: bb2]; // scope 0 at $DIR/no_drop_for_inactive_variant.rs:+1:5: +1:14
+        switchInt(move _2) -> [0: bb1, 1: bb3, otherwise: bb2]; // scope 0 at $DIR/no_drop_for_inactive_variant.rs:+1:5: +1:14
     }
 
     bb1: {
diff --git a/src/test/mir-opt/not_equal_false.opt.InstCombine.diff b/src/test/mir-opt/not_equal_false.opt.InstCombine.diff
index 5009d090668..b558c35ac1e 100644
--- a/src/test/mir-opt/not_equal_false.opt.InstCombine.diff
+++ b/src/test/mir-opt/not_equal_false.opt.InstCombine.diff
@@ -14,7 +14,7 @@
 -         _2 = Ne(move _3, const false);   // scope 0 at $DIR/not_equal_false.rs:+1:8: +1:18
 +         _2 = move _3;                    // scope 0 at $DIR/not_equal_false.rs:+1:8: +1:18
           StorageDead(_3);                 // scope 0 at $DIR/not_equal_false.rs:+1:17: +1:18
-          switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/not_equal_false.rs:+1:8: +1:18
+          switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/not_equal_false.rs:+1:8: +1:18
       }
   
       bb1: {
diff --git a/src/test/mir-opt/remove_fake_borrows.match_guard.CleanupNonCodegenStatements.diff b/src/test/mir-opt/remove_fake_borrows.match_guard.CleanupNonCodegenStatements.diff
index 243a54b6a84..bb5920b28ca 100644
--- a/src/test/mir-opt/remove_fake_borrows.match_guard.CleanupNonCodegenStatements.diff
+++ b/src/test/mir-opt/remove_fake_borrows.match_guard.CleanupNonCodegenStatements.diff
@@ -16,7 +16,7 @@
 -         FakeRead(ForMatchedPlace(None), _1); // scope 0 at $DIR/remove_fake_borrows.rs:+1:11: +1:12
 +         nop;                             // scope 0 at $DIR/remove_fake_borrows.rs:+1:11: +1:12
           _3 = discriminant(_1);           // scope 0 at $DIR/remove_fake_borrows.rs:+1:11: +1:12
-          switchInt(move _3) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/remove_fake_borrows.rs:+1:5: +1:12
+          switchInt(move _3) -> [1: bb2, otherwise: bb1]; // scope 0 at $DIR/remove_fake_borrows.rs:+1:5: +1:12
       }
   
       bb1: {
@@ -25,7 +25,7 @@
       }
   
       bb2: {
-          switchInt((*(*((_1 as Some).0: &&i32)))) -> [0_i32: bb3, otherwise: bb1]; // scope 0 at $DIR/remove_fake_borrows.rs:+1:5: +1:12
+          switchInt((*(*((_1 as Some).0: &&i32)))) -> [0: bb3, otherwise: bb1]; // scope 0 at $DIR/remove_fake_borrows.rs:+1:5: +1:12
       }
   
       bb3: {
@@ -43,7 +43,7 @@
 +         nop;                             // scope 0 at $DIR/remove_fake_borrows.rs:+1:11: +1:12
           StorageLive(_8);                 // scope 0 at $DIR/remove_fake_borrows.rs:+2:20: +2:21
           _8 = _2;                         // scope 0 at $DIR/remove_fake_borrows.rs:+2:20: +2:21
-          switchInt(move _8) -> [false: bb6, otherwise: bb5]; // scope 0 at $DIR/remove_fake_borrows.rs:+2:20: +2:21
+          switchInt(move _8) -> [0: bb6, otherwise: bb5]; // scope 0 at $DIR/remove_fake_borrows.rs:+2:20: +2:21
       }
   
       bb5: {
diff --git a/src/test/mir-opt/remove_storage_markers.main.RemoveStorageMarkers.diff b/src/test/mir-opt/remove_storage_markers.main.RemoveStorageMarkers.diff
index 188aa556490..ed1d0b87f60 100644
--- a/src/test/mir-opt/remove_storage_markers.main.RemoveStorageMarkers.diff
+++ b/src/test/mir-opt/remove_storage_markers.main.RemoveStorageMarkers.diff
@@ -63,7 +63,7 @@
       bb3: {
 -         StorageDead(_8);                 // scope 2 at $DIR/remove_storage_markers.rs:+2:18: +2:19
           _10 = discriminant(_7);          // scope 2 at $DIR/remove_storage_markers.rs:+2:14: +2:19
-          switchInt(move _10) -> [0_isize: bb6, 1_isize: bb4, otherwise: bb5]; // scope 2 at $DIR/remove_storage_markers.rs:+2:14: +2:19
+          switchInt(move _10) -> [0: bb6, 1: bb4, otherwise: bb5]; // scope 2 at $DIR/remove_storage_markers.rs:+2:14: +2:19
       }
   
       bb4: {
diff --git a/src/test/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.mir b/src/test/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.mir
index 7b69b3e07d6..19b726e7484 100644
--- a/src/test/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.mir
+++ b/src/test/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.mir
@@ -145,7 +145,7 @@ fn array_casts() -> () {
         StorageDead(_24);                // scope 7 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
         _22 = Not(move _23);             // scope 7 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
         StorageDead(_23);                // scope 7 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
-        switchInt(move _22) -> [false: bb4, otherwise: bb3]; // scope 7 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
+        switchInt(move _22) -> [0: bb4, otherwise: bb3]; // scope 7 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
     }
 
     bb3: {
diff --git a/src/test/mir-opt/separate_const_switch.identity.SeparateConstSwitch.diff b/src/test/mir-opt/separate_const_switch.identity.SeparateConstSwitch.diff
index b28c6f687f7..6ae16bdb5b8 100644
--- a/src/test/mir-opt/separate_const_switch.identity.SeparateConstSwitch.diff
+++ b/src/test/mir-opt/separate_const_switch.identity.SeparateConstSwitch.diff
@@ -53,14 +53,14 @@
           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_isize: bb7, 1_isize: bb5, otherwise: bb6]; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
-+         switchInt(move _10) -> [0_isize: bb6, 1_isize: 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
++         switchInt(move _10) -> [0: bb6, 1: bb4, otherwise: bb5]; // 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_isize: bb2, 1_isize: bb4, otherwise: bb3]; // 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: {
@@ -118,7 +118,7 @@
 -         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_isize: bb1, 1_isize: bb3, otherwise: bb2]; // 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
       }
   
 -     bb6: {
@@ -140,7 +140,7 @@
 -         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_isize: bb1, 1_isize: bb3, otherwise: bb2]; // 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
       }
   
 -     bb8: {
diff --git a/src/test/mir-opt/separate_const_switch.too_complex.SeparateConstSwitch.diff b/src/test/mir-opt/separate_const_switch.too_complex.SeparateConstSwitch.diff
index 43797908136..8cc0c6a1835 100644
--- a/src/test/mir-opt/separate_const_switch.too_complex.SeparateConstSwitch.diff
+++ b/src/test/mir-opt/separate_const_switch.too_complex.SeparateConstSwitch.diff
@@ -30,7 +30,7 @@
       bb0: {
           StorageLive(_2);                 // scope 0 at $DIR/separate_const_switch.rs:+5:11: +10:6
           _3 = discriminant(_1);           // scope 0 at $DIR/separate_const_switch.rs:+6:15: +6:16
-          switchInt(move _3) -> [0_isize: bb3, 1_isize: bb1, otherwise: bb2]; // scope 0 at $DIR/separate_const_switch.rs:+6:9: +6:16
+          switchInt(move _3) -> [0: bb3, 1: bb1, otherwise: bb2]; // scope 0 at $DIR/separate_const_switch.rs:+6:9: +6:16
       }
   
       bb1: {
@@ -45,7 +45,7 @@
           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_isize: bb6, 1_isize: bb4, otherwise: bb5]; // 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
       }
   
       bb2: {
@@ -67,8 +67,8 @@
 - 
 -     bb4: {
           _8 = discriminant(_2);           // scope 0 at $DIR/separate_const_switch.rs:+5:11: +10:6
--         switchInt(move _8) -> [0_isize: bb7, 1_isize: bb5, otherwise: bb6]; // scope 0 at $DIR/separate_const_switch.rs:+5:5: +10:6
-+         switchInt(move _8) -> [0_isize: bb6, 1_isize: 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
++         switchInt(move _8) -> [0: bb6, 1: bb4, otherwise: bb5]; // scope 0 at $DIR/separate_const_switch.rs:+5:5: +10:6
       }
   
 -     bb5: {
diff --git a/src/test/mir-opt/simplify_cfg.main.SimplifyCfg-early-opt.diff b/src/test/mir-opt/simplify_cfg.main.SimplifyCfg-early-opt.diff
index e068b81bc3b..8eb1aa1f3b3 100644
--- a/src/test/mir-opt/simplify_cfg.main.SimplifyCfg-early-opt.diff
+++ b/src/test/mir-opt/simplify_cfg.main.SimplifyCfg-early-opt.diff
@@ -25,9 +25,9 @@
       }
   
 -     bb3: {
--         switchInt(move _2) -> [false: bb5, otherwise: bb4]; // scope 0 at $DIR/simplify_cfg.rs:+2:12: +2:17
+-         switchInt(move _2) -> [0: bb5, otherwise: bb4]; // scope 0 at $DIR/simplify_cfg.rs:+2:12: +2:17
 +     bb2: {
-+         switchInt(move _2) -> [false: bb4, otherwise: bb3]; // scope 0 at $DIR/simplify_cfg.rs:+2:12: +2:17
++         switchInt(move _2) -> [0: bb4, otherwise: bb3]; // scope 0 at $DIR/simplify_cfg.rs:+2:12: +2:17
       }
   
 -     bb4: {
diff --git a/src/test/mir-opt/simplify_cfg.main.SimplifyCfg-initial.diff b/src/test/mir-opt/simplify_cfg.main.SimplifyCfg-initial.diff
index f693798eb94..1e66b1f703e 100644
--- a/src/test/mir-opt/simplify_cfg.main.SimplifyCfg-initial.diff
+++ b/src/test/mir-opt/simplify_cfg.main.SimplifyCfg-initial.diff
@@ -26,7 +26,7 @@
       }
   
       bb3: {
-          switchInt(move _2) -> [false: bb5, otherwise: bb4]; // scope 0 at $DIR/simplify_cfg.rs:+2:12: +2:17
+          switchInt(move _2) -> [0: bb5, otherwise: bb4]; // scope 0 at $DIR/simplify_cfg.rs:+2:12: +2:17
       }
   
       bb4: {
diff --git a/src/test/mir-opt/simplify_if.main.SimplifyConstCondition-after-const-prop.diff b/src/test/mir-opt/simplify_if.main.SimplifyConstCondition-after-const-prop.diff
index 9b1bea2704b..aea01147443 100644
--- a/src/test/mir-opt/simplify_if.main.SimplifyConstCondition-after-const-prop.diff
+++ b/src/test/mir-opt/simplify_if.main.SimplifyConstCondition-after-const-prop.diff
@@ -9,7 +9,7 @@
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/simplify_if.rs:+1:8: +1:13
           _1 = const false;                // scope 0 at $DIR/simplify_if.rs:+1:8: +1:13
--         switchInt(const false) -> [false: bb3, otherwise: bb1]; // scope 0 at $DIR/simplify_if.rs:+1:8: +1:13
+-         switchInt(const false) -> [0: bb3, otherwise: bb1]; // scope 0 at $DIR/simplify_if.rs:+1:8: +1:13
 +         goto -> bb3;                     // scope 0 at $DIR/simplify_if.rs:+1:8: +1:13
       }
   
diff --git a/src/test/mir-opt/simplify_locals_fixedpoint.foo.SimplifyLocals.diff b/src/test/mir-opt/simplify_locals_fixedpoint.foo.SimplifyLocals.diff
index 8feddcef2ce..a2b55229303 100644
--- a/src/test/mir-opt/simplify_locals_fixedpoint.foo.SimplifyLocals.diff
+++ b/src/test/mir-opt/simplify_locals_fixedpoint.foo.SimplifyLocals.diff
@@ -29,12 +29,12 @@
           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
-          switchInt(move _5) -> [1_isize: bb1, otherwise: bb3]; // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:12: +1:27
+          switchInt(move _5) -> [1: bb1, otherwise: bb3]; // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:12: +1:27
       }
   
       bb1: {
           _4 = discriminant((_1.1: std::option::Option<T>)); // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:12: +1:27
-          switchInt(move _4) -> [0_isize: bb2, otherwise: bb3]; // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:12: +1:27
+          switchInt(move _4) -> [0: bb2, otherwise: bb3]; // scope 1 at $DIR/simplify_locals_fixedpoint.rs:+1:12: +1:27
       }
   
       bb2: {
diff --git a/src/test/mir-opt/simplify_locals_removes_unused_discriminant_reads.map.SimplifyLocals.diff b/src/test/mir-opt/simplify_locals_removes_unused_discriminant_reads.map.SimplifyLocals.diff
index 6e7294003af..9ec138dd82f 100644
--- a/src/test/mir-opt/simplify_locals_removes_unused_discriminant_reads.map.SimplifyLocals.diff
+++ b/src/test/mir-opt/simplify_locals_removes_unused_discriminant_reads.map.SimplifyLocals.diff
@@ -18,7 +18,7 @@
 -         _5 = const false;                // scope 0 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+1:11: +1:12
 -         _5 = const true;                 // scope 0 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+1:11: +1:12
           _2 = discriminant(_1);           // scope 0 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+1:11: +1:12
-          switchInt(move _2) -> [0_isize: bb3, 1_isize: bb1, otherwise: bb2]; // scope 0 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+1:5: +1:12
+          switchInt(move _2) -> [0: bb3, 1: bb1, otherwise: bb2]; // scope 0 at $DIR/simplify_locals_removes_unused_discriminant_reads.rs:+1:5: +1:12
       }
   
       bb1: {
diff --git a/src/test/mir-opt/simplify_match.main.ConstProp.diff b/src/test/mir-opt/simplify_match.main.ConstProp.diff
index e4f9a4c12d9..f00ac5716a7 100644
--- a/src/test/mir-opt/simplify_match.main.ConstProp.diff
+++ b/src/test/mir-opt/simplify_match.main.ConstProp.diff
@@ -16,8 +16,8 @@
 -         _1 = _2;                         // scope 1 at $DIR/simplify_match.rs:+1:28: +1:29
 +         _1 = const false;                // scope 1 at $DIR/simplify_match.rs:+1:28: +1:29
           StorageDead(_2);                 // scope 0 at $DIR/simplify_match.rs:+1:30: +1:31
--         switchInt(_1) -> [false: bb1, otherwise: bb2]; // scope 0 at $DIR/simplify_match.rs:+1:5: +1:31
-+         switchInt(const false) -> [false: bb1, otherwise: bb2]; // scope 0 at $DIR/simplify_match.rs:+1:5: +1:31
+-         switchInt(_1) -> [0: bb1, otherwise: bb2]; // scope 0 at $DIR/simplify_match.rs:+1:5: +1:31
++         switchInt(const false) -> [0: bb1, otherwise: bb2]; // scope 0 at $DIR/simplify_match.rs:+1:5: +1:31
       }
   
       bb1: {
diff --git a/src/test/mir-opt/slice_drop_shim.core.ptr-drop_in_place.[String].AddMovesForPackedDrops.before.mir b/src/test/mir-opt/slice_drop_shim.core.ptr-drop_in_place.[String].AddMovesForPackedDrops.before.mir
index 31ccf14549c..391b00effac 100644
--- a/src/test/mir-opt/slice_drop_shim.core.ptr-drop_in_place.[String].AddMovesForPackedDrops.before.mir
+++ b/src/test/mir-opt/slice_drop_shim.core.ptr-drop_in_place.[String].AddMovesForPackedDrops.before.mir
@@ -37,7 +37,7 @@ fn std::ptr::drop_in_place(_1: *mut [String]) -> () {
 
     bb4 (cleanup): {
         _6 = Eq(_4, _3);                 // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56
-        switchInt(move _6) -> [false: bb3, otherwise: bb2]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56
+        switchInt(move _6) -> [0: bb3, otherwise: bb2]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56
     }
 
     bb5: {
@@ -48,7 +48,7 @@ fn std::ptr::drop_in_place(_1: *mut [String]) -> () {
 
     bb6: {
         _8 = Eq(_4, _3);                 // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56
-        switchInt(move _8) -> [false: bb5, otherwise: bb1]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56
+        switchInt(move _8) -> [0: bb5, otherwise: bb1]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56
     }
 
     bb7: {
@@ -68,7 +68,7 @@ fn std::ptr::drop_in_place(_1: *mut [String]) -> () {
 
     bb10 (cleanup): {
         _12 = Eq(_9, _10);               // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56
-        switchInt(move _12) -> [false: bb9, otherwise: bb2]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56
+        switchInt(move _12) -> [0: bb9, otherwise: bb2]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56
     }
 
     bb11: {
@@ -79,7 +79,7 @@ fn std::ptr::drop_in_place(_1: *mut [String]) -> () {
 
     bb12: {
         _14 = Eq(_9, _10);               // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56
-        switchInt(move _14) -> [false: bb11, otherwise: bb1]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56
+        switchInt(move _14) -> [0: bb11, otherwise: bb1]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56
     }
 
     bb13: {
@@ -96,6 +96,6 @@ fn std::ptr::drop_in_place(_1: *mut [String]) -> () {
     bb15: {
         _2 = SizeOf(std::string::String); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56
         _3 = Len((*_1));                 // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56
-        switchInt(move _2) -> [0_usize: bb8, otherwise: bb14]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56
+        switchInt(move _2) -> [0: bb8, otherwise: bb14]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56
     }
 }
diff --git a/src/test/mir-opt/sroa.enums.ScalarReplacementOfAggregates.diff b/src/test/mir-opt/sroa.enums.ScalarReplacementOfAggregates.diff
index 7c7e87c32a2..a5488c1ec7b 100644
--- a/src/test/mir-opt/sroa.enums.ScalarReplacementOfAggregates.diff
+++ b/src/test/mir-opt/sroa.enums.ScalarReplacementOfAggregates.diff
@@ -21,7 +21,7 @@
           discriminant(_2) = 1;            // 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_isize: bb1, otherwise: bb2]; // 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
       }
   
       bb1: {
diff --git a/src/test/mir-opt/try_identity_e2e.new.PreCodegen.after.mir b/src/test/mir-opt/try_identity_e2e.new.PreCodegen.after.mir
index 30185f3ffab..b254bfeb7c9 100644
--- a/src/test/mir-opt/try_identity_e2e.new.PreCodegen.after.mir
+++ b/src/test/mir-opt/try_identity_e2e.new.PreCodegen.after.mir
@@ -26,7 +26,7 @@ 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_isize: bb2, 1_isize: bb1, otherwise: bb4]; // scope 0 at $DIR/try_identity_e2e.rs:+3:13: +3:20
+        switchInt(move _3) -> [0: bb2, 1: bb1, otherwise: bb4]; // scope 0 at $DIR/try_identity_e2e.rs:+3:13: +3:20
     }
 
     bb1: {
@@ -35,7 +35,7 @@ fn new(_1: Result<T, E>) -> Result<T, E> {
         ((_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_isize: bb5, 1_isize: bb3, otherwise: bb4]; // scope 0 at $DIR/try_identity_e2e.rs:+2:9: +7:10
+        switchInt(move _6) -> [0: bb5, 1: bb3, otherwise: bb4]; // scope 0 at $DIR/try_identity_e2e.rs:+2:9: +7:10
     }
 
     bb2: {
@@ -44,7 +44,7 @@ fn new(_1: Result<T, E>) -> Result<T, E> {
         ((_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_isize: bb5, 1_isize: bb3, otherwise: bb4]; // scope 0 at $DIR/try_identity_e2e.rs:+2:9: +7:10
+        switchInt(move _6) -> [0: bb5, 1: bb3, otherwise: bb4]; // scope 0 at $DIR/try_identity_e2e.rs:+2:9: +7:10
     }
 
     bb3: {
diff --git a/src/test/mir-opt/try_identity_e2e.old.PreCodegen.after.mir b/src/test/mir-opt/try_identity_e2e.old.PreCodegen.after.mir
index 2a9c7408c66..cdbc0681cb8 100644
--- a/src/test/mir-opt/try_identity_e2e.old.PreCodegen.after.mir
+++ b/src/test/mir-opt/try_identity_e2e.old.PreCodegen.after.mir
@@ -15,7 +15,7 @@ fn old(_1: Result<T, E>) -> Result<T, E> {
 
     bb0: {
         _2 = discriminant(_1);           // scope 0 at $DIR/try_identity_e2e.rs:+2:15: +2:16
-        switchInt(move _2) -> [0_isize: bb3, 1_isize: bb1, otherwise: bb2]; // scope 0 at $DIR/try_identity_e2e.rs:+2:9: +2:16
+        switchInt(move _2) -> [0: bb3, 1: bb1, otherwise: bb2]; // scope 0 at $DIR/try_identity_e2e.rs:+2:9: +2:16
     }
 
     bb1: {
diff --git a/src/test/mir-opt/uninhabited_enum_branching.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir b/src/test/mir-opt/uninhabited_enum_branching.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir
index 4aa5ba007f1..39ec0527759 100644
--- a/src/test/mir-opt/uninhabited_enum_branching.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir
+++ b/src/test/mir-opt/uninhabited_enum_branching.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir
@@ -18,7 +18,7 @@ fn main() -> () {
         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
         _3 = discriminant(_2);           // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:11: +1:19
-        switchInt(move _3) -> [2_isize: 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
     }
 
     bb1: {
@@ -36,7 +36,7 @@ fn main() -> () {
         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
         _8 = discriminant(_7);           // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:11: +7:19
-        switchInt(move _8) -> [4_isize: bb5, 5_isize: bb3, otherwise: bb4]; // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:5: +7:19
+        switchInt(move _8) -> [4: bb5, 5: bb3, otherwise: bb4]; // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:5: +7:19
     }
 
     bb2: {
diff --git a/src/test/mir-opt/uninhabited_enum_branching.main.UninhabitedEnumBranching.diff b/src/test/mir-opt/uninhabited_enum_branching.main.UninhabitedEnumBranching.diff
index c3d356aedb2..598413a1d82 100644
--- a/src/test/mir-opt/uninhabited_enum_branching.main.UninhabitedEnumBranching.diff
+++ b/src/test/mir-opt/uninhabited_enum_branching.main.UninhabitedEnumBranching.diff
@@ -19,8 +19,8 @@
           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
           _3 = discriminant(_2);           // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:11: +1:19
--         switchInt(move _3) -> [0_isize: bb3, 1_isize: bb4, 2_isize: bb1, otherwise: bb2]; // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:5: +1:19
-+         switchInt(move _3) -> [2_isize: bb1, otherwise: bb2]; // scope 0 at $DIR/uninhabited_enum_branching.rs:+1:5: +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
       }
   
       bb1: {
@@ -65,7 +65,7 @@
           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
           _8 = discriminant(_7);           // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:11: +7:19
-          switchInt(move _8) -> [4_isize: bb8, 5_isize: bb6, otherwise: bb7]; // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:5: +7:19
+          switchInt(move _8) -> [4: bb8, 5: bb6, otherwise: bb7]; // scope 0 at $DIR/uninhabited_enum_branching.rs:+7:5: +7:19
       }
   
       bb6: {
diff --git a/src/test/mir-opt/uninhabited_enum_branching2.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir b/src/test/mir-opt/uninhabited_enum_branching2.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir
index ec5612ad767..c8cd6f6c1ea 100644
--- a/src/test/mir-opt/uninhabited_enum_branching2.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir
+++ b/src/test/mir-opt/uninhabited_enum_branching2.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir
@@ -32,7 +32,7 @@ fn main() -> () {
         StorageLive(_4);                 // scope 1 at $DIR/uninhabited_enum_branching2.rs:+3:11: +3:22
         _4 = &(_1.1: Test1);             // scope 1 at $DIR/uninhabited_enum_branching2.rs:+3:11: +3:22
         _5 = discriminant((*_4));        // scope 1 at $DIR/uninhabited_enum_branching2.rs:+3:11: +3:22
-        switchInt(move _5) -> [2_isize: bb3, 3_isize: bb1, otherwise: bb2]; // scope 1 at $DIR/uninhabited_enum_branching2.rs:+3:5: +3:22
+        switchInt(move _5) -> [2: bb3, 3: bb1, otherwise: bb2]; // scope 1 at $DIR/uninhabited_enum_branching2.rs:+3:5: +3:22
     }
 
     bb1: {
@@ -66,7 +66,7 @@ fn main() -> () {
         StorageDead(_3);                 // scope 1 at $DIR/uninhabited_enum_branching2.rs:+8:6: +8:7
         StorageLive(_9);                 // scope 1 at $DIR/uninhabited_enum_branching2.rs:+10:5: +15:6
         _10 = discriminant((_1.1: Test1)); // scope 1 at $DIR/uninhabited_enum_branching2.rs:+10:11: +10:21
-        switchInt(move _10) -> [2_isize: bb7, 3_isize: bb5, otherwise: bb6]; // scope 1 at $DIR/uninhabited_enum_branching2.rs:+10:5: +10:21
+        switchInt(move _10) -> [2: bb7, 3: bb5, otherwise: bb6]; // scope 1 at $DIR/uninhabited_enum_branching2.rs:+10:5: +10:21
     }
 
     bb5: {
diff --git a/src/test/mir-opt/uninhabited_enum_branching2.main.UninhabitedEnumBranching.diff b/src/test/mir-opt/uninhabited_enum_branching2.main.UninhabitedEnumBranching.diff
index 77b358a4801..2aee6d2681d 100644
--- a/src/test/mir-opt/uninhabited_enum_branching2.main.UninhabitedEnumBranching.diff
+++ b/src/test/mir-opt/uninhabited_enum_branching2.main.UninhabitedEnumBranching.diff
@@ -33,8 +33,8 @@
           StorageLive(_4);                 // scope 1 at $DIR/uninhabited_enum_branching2.rs:+3:11: +3:22
           _4 = &(_1.1: Test1);             // scope 1 at $DIR/uninhabited_enum_branching2.rs:+3:11: +3:22
           _5 = discriminant((*_4));        // scope 1 at $DIR/uninhabited_enum_branching2.rs:+3:11: +3:22
--         switchInt(move _5) -> [0_isize: bb3, 1_isize: bb4, 2_isize: bb5, 3_isize: bb1, otherwise: bb2]; // scope 1 at $DIR/uninhabited_enum_branching2.rs:+3:5: +3:22
-+         switchInt(move _5) -> [2_isize: bb5, 3_isize: bb1, otherwise: bb2]; // scope 1 at $DIR/uninhabited_enum_branching2.rs:+3:5: +3:22
+-         switchInt(move _5) -> [0: bb3, 1: bb4, 2: bb5, 3: bb1, otherwise: bb2]; // scope 1 at $DIR/uninhabited_enum_branching2.rs:+3:5: +3:22
++         switchInt(move _5) -> [2: bb5, 3: bb1, otherwise: bb2]; // scope 1 at $DIR/uninhabited_enum_branching2.rs:+3:5: +3:22
       }
   
       bb1: {
@@ -87,8 +87,8 @@
           StorageDead(_3);                 // scope 1 at $DIR/uninhabited_enum_branching2.rs:+8:6: +8:7
           StorageLive(_9);                 // scope 1 at $DIR/uninhabited_enum_branching2.rs:+10:5: +15:6
           _10 = discriminant((_1.1: Test1)); // scope 1 at $DIR/uninhabited_enum_branching2.rs:+10:11: +10:21
--         switchInt(move _10) -> [0_isize: bb9, 1_isize: bb10, 2_isize: bb11, 3_isize: bb7, otherwise: bb8]; // scope 1 at $DIR/uninhabited_enum_branching2.rs:+10:5: +10:21
-+         switchInt(move _10) -> [2_isize: bb11, 3_isize: bb7, otherwise: bb8]; // scope 1 at $DIR/uninhabited_enum_branching2.rs:+10:5: +10:21
+-         switchInt(move _10) -> [0: bb9, 1: bb10, 2: bb11, 3: bb7, otherwise: bb8]; // scope 1 at $DIR/uninhabited_enum_branching2.rs:+10:5: +10:21
++         switchInt(move _10) -> [2: bb11, 3: bb7, otherwise: bb8]; // scope 1 at $DIR/uninhabited_enum_branching2.rs:+10:5: +10:21
       }
   
       bb7: {
diff --git a/src/test/mir-opt/uninhabited_fallthrough_elimination.eliminate_fallthrough.UninhabitedEnumBranching.diff b/src/test/mir-opt/uninhabited_fallthrough_elimination.eliminate_fallthrough.UninhabitedEnumBranching.diff
index 11d93fca7e0..58e085dd041 100644
--- a/src/test/mir-opt/uninhabited_fallthrough_elimination.eliminate_fallthrough.UninhabitedEnumBranching.diff
+++ b/src/test/mir-opt/uninhabited_fallthrough_elimination.eliminate_fallthrough.UninhabitedEnumBranching.diff
@@ -8,8 +8,8 @@
   
       bb0: {
           _2 = discriminant(_1);           // scope 0 at $DIR/uninhabited_fallthrough_elimination.rs:+1:11: +1:12
--         switchInt(move _2) -> [1_isize: bb3, 2_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/uninhabited_fallthrough_elimination.rs:+1:5: +1:12
-+         switchInt(move _2) -> [1_isize: bb3, 2_isize: bb2, otherwise: bb5]; // scope 0 at $DIR/uninhabited_fallthrough_elimination.rs:+1:5: +1:12
+-         switchInt(move _2) -> [1: bb3, 2: bb2, otherwise: bb1]; // scope 0 at $DIR/uninhabited_fallthrough_elimination.rs:+1:5: +1:12
++         switchInt(move _2) -> [1: bb3, 2: bb2, otherwise: bb5]; // scope 0 at $DIR/uninhabited_fallthrough_elimination.rs:+1:5: +1:12
       }
   
       bb1: {
diff --git a/src/test/mir-opt/uninhabited_fallthrough_elimination.keep_fallthrough.UninhabitedEnumBranching.diff b/src/test/mir-opt/uninhabited_fallthrough_elimination.keep_fallthrough.UninhabitedEnumBranching.diff
index a7f8321ae34..e765851eb78 100644
--- a/src/test/mir-opt/uninhabited_fallthrough_elimination.keep_fallthrough.UninhabitedEnumBranching.diff
+++ b/src/test/mir-opt/uninhabited_fallthrough_elimination.keep_fallthrough.UninhabitedEnumBranching.diff
@@ -8,8 +8,8 @@
   
       bb0: {
           _2 = discriminant(_1);           // scope 0 at $DIR/uninhabited_fallthrough_elimination.rs:+1:11: +1:12
--         switchInt(move _2) -> [0_isize: bb2, 1_isize: bb3, otherwise: bb1]; // scope 0 at $DIR/uninhabited_fallthrough_elimination.rs:+1:5: +1:12
-+         switchInt(move _2) -> [1_isize: bb3, otherwise: bb1]; // scope 0 at $DIR/uninhabited_fallthrough_elimination.rs:+1:5: +1:12
+-         switchInt(move _2) -> [0: bb2, 1: bb3, otherwise: bb1]; // scope 0 at $DIR/uninhabited_fallthrough_elimination.rs:+1:5: +1:12
++         switchInt(move _2) -> [1: bb3, otherwise: bb1]; // scope 0 at $DIR/uninhabited_fallthrough_elimination.rs:+1:5: +1:12
       }
   
       bb1: {
diff --git a/src/test/mir-opt/unreachable.main.UnreachablePropagation.diff b/src/test/mir-opt/unreachable.main.UnreachablePropagation.diff
index 9cd4b8ccf33..848bff1d492 100644
--- a/src/test/mir-opt/unreachable.main.UnreachablePropagation.diff
+++ b/src/test/mir-opt/unreachable.main.UnreachablePropagation.diff
@@ -27,8 +27,8 @@
   
       bb1: {
           _2 = discriminant(_1);           // scope 1 at $DIR/unreachable.rs:+1:12: +1:20
--         switchInt(move _2) -> [1_isize: bb2, otherwise: bb6]; // scope 1 at $DIR/unreachable.rs:+1:12: +1:20
-+         switchInt(move _2) -> [1_isize: bb2, otherwise: bb3]; // scope 1 at $DIR/unreachable.rs:+1:12: +1:20
+-         switchInt(move _2) -> [1: bb2, otherwise: bb6]; // scope 1 at $DIR/unreachable.rs:+1:12: +1:20
++         switchInt(move _2) -> [1: bb2, otherwise: bb3]; // scope 1 at $DIR/unreachable.rs:+1:12: +1:20
       }
   
       bb2: {
@@ -38,7 +38,7 @@
 -         StorageLive(_5);                 // scope 2 at $DIR/unreachable.rs:+4:9: +8:10
 -         StorageLive(_6);                 // scope 2 at $DIR/unreachable.rs:+4:12: +4:16
 -         _6 = const true;                 // scope 2 at $DIR/unreachable.rs:+4:12: +4:16
--         switchInt(move _6) -> [false: bb4, otherwise: bb3]; // scope 2 at $DIR/unreachable.rs:+4:12: +4:16
+-         switchInt(move _6) -> [0: bb4, otherwise: bb3]; // scope 2 at $DIR/unreachable.rs:+4:12: +4:16
 +         unreachable;                     // scope 2 at $DIR/unreachable.rs:+4:12: +4:16
       }
   
diff --git a/src/test/mir-opt/unreachable_diverging.main.UnreachablePropagation.diff b/src/test/mir-opt/unreachable_diverging.main.UnreachablePropagation.diff
index afd6b00aac3..fb778470e53 100644
--- a/src/test/mir-opt/unreachable_diverging.main.UnreachablePropagation.diff
+++ b/src/test/mir-opt/unreachable_diverging.main.UnreachablePropagation.diff
@@ -29,7 +29,7 @@
   
       bb1: {
           _3 = discriminant(_2);           // scope 2 at $DIR/unreachable_diverging.rs:+2:12: +2:22
-          switchInt(move _3) -> [1_isize: bb2, otherwise: bb6]; // scope 2 at $DIR/unreachable_diverging.rs:+2:12: +2:22
+          switchInt(move _3) -> [1: bb2, otherwise: bb6]; // scope 2 at $DIR/unreachable_diverging.rs:+2:12: +2:22
       }
   
       bb2: {
@@ -38,7 +38,7 @@
           StorageLive(_5);                 // scope 2 at $DIR/unreachable_diverging.rs:+3:9: +5:10
           StorageLive(_6);                 // scope 2 at $DIR/unreachable_diverging.rs:+3:12: +3:13
           _6 = _1;                         // scope 2 at $DIR/unreachable_diverging.rs:+3:12: +3:13
-          switchInt(move _6) -> [false: bb4, otherwise: bb3]; // scope 2 at $DIR/unreachable_diverging.rs:+3:12: +3:13
+          switchInt(move _6) -> [0: bb4, otherwise: bb3]; // scope 2 at $DIR/unreachable_diverging.rs:+3:12: +3:13
       }
   
       bb3: {
diff --git a/src/test/mir-opt/while_let_loops.change_loop_body.ConstProp.diff b/src/test/mir-opt/while_let_loops.change_loop_body.ConstProp.diff
index eef7011149d..984ef476e10 100644
--- a/src/test/mir-opt/while_let_loops.change_loop_body.ConstProp.diff
+++ b/src/test/mir-opt/while_let_loops.change_loop_body.ConstProp.diff
@@ -24,13 +24,13 @@
           Deinit(_3);                      // scope 2 at $DIR/while_let_loops.rs:+2:28: +2:32
           discriminant(_3) = 0;            // scope 2 at $DIR/while_let_loops.rs:+2:28: +2:32
 -         _4 = discriminant(_3);           // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
--         switchInt(move _4) -> [1_isize: bb1, otherwise: bb3]; // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
+-         switchInt(move _4) -> [1: bb1, otherwise: bb3]; // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
 +         _4 = const 0_isize;              // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
-+         switchInt(const 0_isize) -> [1_isize: bb1, otherwise: bb3]; // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
++         switchInt(const 0_isize) -> [1: bb1, otherwise: bb3]; // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
       }
   
       bb1: {
-          switchInt(((_3 as Some).0: u32)) -> [0_u32: bb2, otherwise: bb3]; // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
+          switchInt(((_3 as Some).0: u32)) -> [0: bb2, otherwise: bb3]; // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
       }
   
       bb2: {
diff --git a/src/test/mir-opt/while_storage.while_loop.PreCodegen.after.mir b/src/test/mir-opt/while_storage.while_loop.PreCodegen.after.mir
index 68aa3e5db32..1556c240dc5 100644
--- a/src/test/mir-opt/while_storage.while_loop.PreCodegen.after.mir
+++ b/src/test/mir-opt/while_storage.while_loop.PreCodegen.after.mir
@@ -24,7 +24,7 @@ fn while_loop(_1: bool) -> () {
 
     bb2: {
         StorageDead(_3);                 // scope 0 at $DIR/while_storage.rs:+1:21: +1:22
-        switchInt(move _2) -> [false: bb7, otherwise: bb3]; // scope 0 at $DIR/while_storage.rs:+1:11: +1:22
+        switchInt(move _2) -> [0: bb7, otherwise: bb3]; // scope 0 at $DIR/while_storage.rs:+1:11: +1:22
     }
 
     bb3: {
@@ -39,7 +39,7 @@ fn while_loop(_1: bool) -> () {
 
     bb4: {
         StorageDead(_5);                 // scope 0 at $DIR/while_storage.rs:+2:22: +2:23
-        switchInt(move _4) -> [false: bb6, otherwise: bb5]; // scope 0 at $DIR/while_storage.rs:+2:12: +2:23
+        switchInt(move _4) -> [0: bb6, otherwise: bb5]; // scope 0 at $DIR/while_storage.rs:+2:12: +2:23
     }
 
     bb5: {
diff --git a/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs b/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs
index 480e8e55cf3..e053a9dc888 100644
--- a/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs
+++ b/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs
@@ -303,7 +303,6 @@ fn check_terminator<'tcx>(
 
         TerminatorKind::SwitchInt {
             discr,
-            switch_ty: _,
             targets: _,
         } => check_operand(tcx, discr, span, body),