diff options
Diffstat (limited to 'compiler/rustc_middle')
| -rw-r--r-- | compiler/rustc_middle/src/middle/privacy.rs | 2 | ||||
| -rw-r--r-- | compiler/rustc_middle/src/middle/region.rs | 33 | ||||
| -rw-r--r-- | compiler/rustc_middle/src/mir/interpret/error.rs | 7 | ||||
| -rw-r--r-- | compiler/rustc_middle/src/thir.rs | 2 | ||||
| -rw-r--r-- | compiler/rustc_middle/src/ty/adt.rs | 8 | ||||
| -rw-r--r-- | compiler/rustc_middle/src/ty/context.rs | 35 | ||||
| -rw-r--r-- | compiler/rustc_middle/src/ty/layout.rs | 12 | ||||
| -rw-r--r-- | compiler/rustc_middle/src/ty/mod.rs | 41 | ||||
| -rw-r--r-- | compiler/rustc_middle/src/ty/print/pretty.rs | 14 | ||||
| -rw-r--r-- | compiler/rustc_middle/src/ty/region.rs | 2 | ||||
| -rw-r--r-- | compiler/rustc_middle/src/ty/sty.rs | 10 | ||||
| -rw-r--r-- | compiler/rustc_middle/src/ty/util.rs | 2 |
12 files changed, 99 insertions, 69 deletions
diff --git a/compiler/rustc_middle/src/middle/privacy.rs b/compiler/rustc_middle/src/middle/privacy.rs index 03549091d62..785ddd1ee29 100644 --- a/compiler/rustc_middle/src/middle/privacy.rs +++ b/compiler/rustc_middle/src/middle/privacy.rs @@ -182,7 +182,7 @@ impl EffectiveVisibilities { // don't check this condition for them. let is_impl = matches!(tcx.def_kind(def_id), DefKind::Impl { .. }); let is_associated_item_in_trait_impl = tcx - .impl_of_method(def_id.to_def_id()) + .impl_of_assoc(def_id.to_def_id()) .and_then(|impl_id| tcx.trait_id_of_impl(impl_id)) .is_some(); if !is_impl && !is_associated_item_in_trait_impl { diff --git a/compiler/rustc_middle/src/middle/region.rs b/compiler/rustc_middle/src/middle/region.rs index 0f5b63f5c1d..800c1af660a 100644 --- a/compiler/rustc_middle/src/middle/region.rs +++ b/compiler/rustc_middle/src/middle/region.rs @@ -175,23 +175,22 @@ impl Scope { return DUMMY_SP; }; let span = tcx.hir_span(hir_id); - if let ScopeData::Remainder(first_statement_index) = self.data { - if let Node::Block(blk) = tcx.hir_node(hir_id) { - // Want span for scope starting after the - // indexed statement and ending at end of - // `blk`; reuse span of `blk` and shift `lo` - // forward to end of indexed statement. - // - // (This is the special case alluded to in the - // doc-comment for this method) - - let stmt_span = blk.stmts[first_statement_index.index()].span; - - // To avoid issues with macro-generated spans, the span - // of the statement must be nested in that of the block. - if span.lo() <= stmt_span.lo() && stmt_span.lo() <= span.hi() { - return span.with_lo(stmt_span.lo()); - } + if let ScopeData::Remainder(first_statement_index) = self.data + // Want span for scope starting after the + // indexed statement and ending at end of + // `blk`; reuse span of `blk` and shift `lo` + // forward to end of indexed statement. + // + // (This is the special case alluded to in the + // doc-comment for this method) + && let Node::Block(blk) = tcx.hir_node(hir_id) + { + let stmt_span = blk.stmts[first_statement_index.index()].span; + + // To avoid issues with macro-generated spans, the span + // of the statement must be nested in that of the block. + if span.lo() <= stmt_span.lo() && stmt_span.lo() <= span.hi() { + return span.with_lo(stmt_span.lo()); } } span diff --git a/compiler/rustc_middle/src/mir/interpret/error.rs b/compiler/rustc_middle/src/mir/interpret/error.rs index 2b0cfb86564..3e895c6b280 100644 --- a/compiler/rustc_middle/src/mir/interpret/error.rs +++ b/compiler/rustc_middle/src/mir/interpret/error.rs @@ -426,7 +426,12 @@ pub enum UndefinedBehaviorInfo<'tcx> { /// Trying to set discriminant to the niched variant, but the value does not match. InvalidNichedEnumVariantWritten { enum_ty: Ty<'tcx> }, /// ABI-incompatible argument types. - AbiMismatchArgument { caller_ty: Ty<'tcx>, callee_ty: Ty<'tcx> }, + AbiMismatchArgument { + /// The index of the argument whose type is wrong. + arg_idx: usize, + caller_ty: Ty<'tcx>, + callee_ty: Ty<'tcx>, + }, /// ABI-incompatible return types. AbiMismatchReturn { caller_ty: Ty<'tcx>, callee_ty: Ty<'tcx> }, } diff --git a/compiler/rustc_middle/src/thir.rs b/compiler/rustc_middle/src/thir.rs index 730c1147684..3dd6d2c8928 100644 --- a/compiler/rustc_middle/src/thir.rs +++ b/compiler/rustc_middle/src/thir.rs @@ -838,6 +838,8 @@ pub enum PatKind<'tcx> { /// * integer, bool, char or float (represented as a valtree), which will be handled by /// exhaustiveness to cover exactly its own value, similar to `&str`, but these values are /// much simpler. + /// * raw pointers derived from integers, other raw pointers will have already resulted in an + // error. /// * `String`, if `string_deref_patterns` is enabled. Constant { value: mir::Const<'tcx>, diff --git a/compiler/rustc_middle/src/ty/adt.rs b/compiler/rustc_middle/src/ty/adt.rs index 275458fc85f..3bf80d37e65 100644 --- a/compiler/rustc_middle/src/ty/adt.rs +++ b/compiler/rustc_middle/src/ty/adt.rs @@ -566,10 +566,10 @@ impl<'tcx> AdtDef<'tcx> { let mut prev_discr = None::<Discr<'tcx>>; self.variants().iter_enumerated().map(move |(i, v)| { let mut discr = prev_discr.map_or(initial, |d| d.wrap_incr(tcx)); - if let VariantDiscr::Explicit(expr_did) = v.discr { - if let Ok(new_discr) = self.eval_explicit_discr(tcx, expr_did) { - discr = new_discr; - } + if let VariantDiscr::Explicit(expr_did) = v.discr + && let Ok(new_discr) = self.eval_explicit_discr(tcx, expr_did) + { + discr = new_discr; } prev_discr = Some(discr); diff --git a/compiler/rustc_middle/src/ty/context.rs b/compiler/rustc_middle/src/ty/context.rs index 66d1335e763..6f21160d1f6 100644 --- a/compiler/rustc_middle/src/ty/context.rs +++ b/compiler/rustc_middle/src/ty/context.rs @@ -1041,11 +1041,13 @@ const NUM_PREINTERNED_TY_VARS: u32 = 100; const NUM_PREINTERNED_FRESH_TYS: u32 = 20; const NUM_PREINTERNED_FRESH_INT_TYS: u32 = 3; const NUM_PREINTERNED_FRESH_FLOAT_TYS: u32 = 3; +const NUM_PREINTERNED_ANON_BOUND_TYS_I: u32 = 3; +const NUM_PREINTERNED_ANON_BOUND_TYS_V: u32 = 20; // This number may seem high, but it is reached in all but the smallest crates. const NUM_PREINTERNED_RE_VARS: u32 = 500; -const NUM_PREINTERNED_RE_LATE_BOUNDS_I: u32 = 2; -const NUM_PREINTERNED_RE_LATE_BOUNDS_V: u32 = 20; +const NUM_PREINTERNED_ANON_RE_BOUNDS_I: u32 = 3; +const NUM_PREINTERNED_ANON_RE_BOUNDS_V: u32 = 20; pub struct CommonTypes<'tcx> { pub unit: Ty<'tcx>, @@ -1088,6 +1090,11 @@ pub struct CommonTypes<'tcx> { /// Pre-interned `Infer(ty::FreshFloatTy(n))` for small values of `n`. pub fresh_float_tys: Vec<Ty<'tcx>>, + + /// Pre-interned values of the form: + /// `Bound(DebruijnIndex(i), BoundTy { var: v, kind: BoundTyKind::Anon})` + /// for small values of `i` and `v`. + pub anon_bound_tys: Vec<Vec<Ty<'tcx>>>, } pub struct CommonLifetimes<'tcx> { @@ -1101,9 +1108,9 @@ pub struct CommonLifetimes<'tcx> { pub re_vars: Vec<Region<'tcx>>, /// Pre-interned values of the form: - /// `ReBound(DebruijnIndex(i), BoundRegion { var: v, kind: BrAnon })` + /// `ReBound(DebruijnIndex(i), BoundRegion { var: v, kind: BoundRegionKind::Anon })` /// for small values of `i` and `v`. - pub re_late_bounds: Vec<Vec<Region<'tcx>>>, + pub anon_re_bounds: Vec<Vec<Region<'tcx>>>, } pub struct CommonConsts<'tcx> { @@ -1131,6 +1138,19 @@ impl<'tcx> CommonTypes<'tcx> { let fresh_float_tys: Vec<_> = (0..NUM_PREINTERNED_FRESH_FLOAT_TYS).map(|n| mk(Infer(ty::FreshFloatTy(n)))).collect(); + let anon_bound_tys = (0..NUM_PREINTERNED_ANON_BOUND_TYS_I) + .map(|i| { + (0..NUM_PREINTERNED_ANON_BOUND_TYS_V) + .map(|v| { + mk(ty::Bound( + ty::DebruijnIndex::from(i), + ty::BoundTy { var: ty::BoundVar::from(v), kind: ty::BoundTyKind::Anon }, + )) + }) + .collect() + }) + .collect(); + CommonTypes { unit: mk(Tuple(List::empty())), bool: mk(Bool), @@ -1161,6 +1181,7 @@ impl<'tcx> CommonTypes<'tcx> { fresh_tys, fresh_int_tys, fresh_float_tys, + anon_bound_tys, } } } @@ -1176,9 +1197,9 @@ impl<'tcx> CommonLifetimes<'tcx> { let re_vars = (0..NUM_PREINTERNED_RE_VARS).map(|n| mk(ty::ReVar(ty::RegionVid::from(n)))).collect(); - let re_late_bounds = (0..NUM_PREINTERNED_RE_LATE_BOUNDS_I) + let anon_re_bounds = (0..NUM_PREINTERNED_ANON_RE_BOUNDS_I) .map(|i| { - (0..NUM_PREINTERNED_RE_LATE_BOUNDS_V) + (0..NUM_PREINTERNED_ANON_RE_BOUNDS_V) .map(|v| { mk(ty::ReBound( ty::DebruijnIndex::from(i), @@ -1196,7 +1217,7 @@ impl<'tcx> CommonLifetimes<'tcx> { re_static: mk(ty::ReStatic), re_erased: mk(ty::ReErased), re_vars, - re_late_bounds, + anon_re_bounds, } } } diff --git a/compiler/rustc_middle/src/ty/layout.rs b/compiler/rustc_middle/src/ty/layout.rs index 809717513c7..aed94f9aa04 100644 --- a/compiler/rustc_middle/src/ty/layout.rs +++ b/compiler/rustc_middle/src/ty/layout.rs @@ -107,8 +107,8 @@ impl abi::Integer { abi::Integer::I8 }; - // If there are no negative values, we can use the unsigned fit. - if min >= 0 { + // Pick the smallest fit. + if unsigned_fit <= signed_fit { (cmp::max(unsigned_fit, at_least), false) } else { (cmp::max(signed_fit, at_least), true) @@ -1055,11 +1055,11 @@ where _ => Some(this), }; - if let Some(variant) = data_variant { + if let Some(variant) = data_variant // We're not interested in any unions. - if let FieldsShape::Union(_) = variant.fields { - data_variant = None; - } + && let FieldsShape::Union(_) = variant.fields + { + data_variant = None; } let mut result = None; diff --git a/compiler/rustc_middle/src/ty/mod.rs b/compiler/rustc_middle/src/ty/mod.rs index a7cde2ad485..bb70c61cd14 100644 --- a/compiler/rustc_middle/src/ty/mod.rs +++ b/compiler/rustc_middle/src/ty/mod.rs @@ -1988,29 +1988,21 @@ impl<'tcx> TyCtxt<'tcx> { self.impl_trait_ref(def_id).map(|tr| tr.skip_binder().def_id) } - /// If the given `DefId` describes an item belonging to a trait, - /// returns the `DefId` of the trait that the trait item belongs to; - /// otherwise, returns `None`. - pub fn trait_of_item(self, def_id: DefId) -> Option<DefId> { - if let DefKind::AssocConst | DefKind::AssocFn | DefKind::AssocTy = self.def_kind(def_id) { - let parent = self.parent(def_id); - if let DefKind::Trait | DefKind::TraitAlias = self.def_kind(parent) { - return Some(parent); - } - } - None + /// If the given `DefId` is an associated item, returns the `DefId` of the parent trait or impl. + pub fn assoc_parent(self, def_id: DefId) -> Option<DefId> { + self.def_kind(def_id).is_assoc().then(|| self.parent(def_id)) } - /// If the given `DefId` describes a method belonging to an impl, returns the - /// `DefId` of the impl that the method belongs to; otherwise, returns `None`. - pub fn impl_of_method(self, def_id: DefId) -> Option<DefId> { - if let DefKind::AssocConst | DefKind::AssocFn | DefKind::AssocTy = self.def_kind(def_id) { - let parent = self.parent(def_id); - if let DefKind::Impl { .. } = self.def_kind(parent) { - return Some(parent); - } - } - None + /// If the given `DefId` is an associated item of a trait, + /// returns the `DefId` of the trait; otherwise, returns `None`. + pub fn trait_of_assoc(self, def_id: DefId) -> Option<DefId> { + self.assoc_parent(def_id).filter(|id| self.def_kind(id) == DefKind::Trait) + } + + /// If the given `DefId` is an associated item of an impl, + /// returns the `DefId` of the impl; otherwise returns `None`. + pub fn impl_of_assoc(self, def_id: DefId) -> Option<DefId> { + self.assoc_parent(def_id).filter(|id| matches!(self.def_kind(id), DefKind::Impl { .. })) } pub fn is_exportable(self, def_id: DefId) -> bool { @@ -2024,7 +2016,10 @@ impl<'tcx> TyCtxt<'tcx> { && let Some(def_id) = def_id.as_local() && let outer = self.def_span(def_id).ctxt().outer_expn_data() && matches!(outer.kind, ExpnKind::Macro(MacroKind::Derive, _)) - && self.has_attr(outer.macro_def_id.unwrap(), sym::rustc_builtin_macro) + && find_attr!( + self.get_all_attrs(outer.macro_def_id.unwrap()), + AttributeKind::RustcBuiltinMacro { .. } + ) { true } else { @@ -2178,7 +2173,7 @@ impl<'tcx> TyCtxt<'tcx> { #[inline] pub fn is_const_default_method(self, def_id: DefId) -> bool { - matches!(self.trait_of_item(def_id), Some(trait_id) if self.is_const_trait(trait_id)) + matches!(self.trait_of_assoc(def_id), Some(trait_id) if self.is_const_trait(trait_id)) } pub fn impl_method_has_trait_impl_trait_tys(self, def_id: DefId) -> bool { diff --git a/compiler/rustc_middle/src/ty/print/pretty.rs b/compiler/rustc_middle/src/ty/print/pretty.rs index 9ee64df0ad0..5c44b10ba71 100644 --- a/compiler/rustc_middle/src/ty/print/pretty.rs +++ b/compiler/rustc_middle/src/ty/print/pretty.rs @@ -86,7 +86,7 @@ macro_rules! define_helper { impl $helper { pub fn new() -> $helper { - $helper($tl.with(|c| c.replace(true))) + $helper($tl.replace(true)) } } @@ -100,12 +100,12 @@ macro_rules! define_helper { impl Drop for $helper { fn drop(&mut self) { - $tl.with(|c| c.set(self.0)) + $tl.set(self.0) } } pub fn $name() -> bool { - $tl.with(|c| c.get()) + $tl.get() } )+ } @@ -225,10 +225,10 @@ impl<'tcx> RegionHighlightMode<'tcx> { region: Option<ty::Region<'tcx>>, number: Option<usize>, ) { - if let Some(k) = region { - if let Some(n) = number { - self.highlighting_region(k, n); - } + if let Some(k) = region + && let Some(n) = number + { + self.highlighting_region(k, n); } } diff --git a/compiler/rustc_middle/src/ty/region.rs b/compiler/rustc_middle/src/ty/region.rs index 51be93d9a72..5cf96072177 100644 --- a/compiler/rustc_middle/src/ty/region.rs +++ b/compiler/rustc_middle/src/ty/region.rs @@ -54,7 +54,7 @@ impl<'tcx> Region<'tcx> { ) -> Region<'tcx> { // Use a pre-interned one when possible. if let ty::BoundRegion { var, kind: ty::BoundRegionKind::Anon } = bound_region - && let Some(inner) = tcx.lifetimes.re_late_bounds.get(debruijn.as_usize()) + && let Some(inner) = tcx.lifetimes.anon_re_bounds.get(debruijn.as_usize()) && let Some(re) = inner.get(var.as_usize()).copied() { re diff --git a/compiler/rustc_middle/src/ty/sty.rs b/compiler/rustc_middle/src/ty/sty.rs index 8bb3b3f1263..4569596cfbe 100644 --- a/compiler/rustc_middle/src/ty/sty.rs +++ b/compiler/rustc_middle/src/ty/sty.rs @@ -485,7 +485,15 @@ impl<'tcx> Ty<'tcx> { index: ty::DebruijnIndex, bound_ty: ty::BoundTy, ) -> Ty<'tcx> { - Ty::new(tcx, Bound(index, bound_ty)) + // Use a pre-interned one when possible. + if let ty::BoundTy { var, kind: ty::BoundTyKind::Anon } = bound_ty + && let Some(inner) = tcx.types.anon_bound_tys.get(index.as_usize()) + && let Some(ty) = inner.get(var.as_usize()).copied() + { + ty + } else { + Ty::new(tcx, Bound(index, bound_ty)) + } } #[inline] diff --git a/compiler/rustc_middle/src/ty/util.rs b/compiler/rustc_middle/src/ty/util.rs index 174892c6f4d..a7d07adf78f 100644 --- a/compiler/rustc_middle/src/ty/util.rs +++ b/compiler/rustc_middle/src/ty/util.rs @@ -32,7 +32,7 @@ use crate::ty::{ #[derive(Copy, Clone, Debug)] pub struct Discr<'tcx> { - /// Bit representation of the discriminant (e.g., `-128i8` is `0xFF_u128`). + /// Bit representation of the discriminant (e.g., `-1i8` is `0xFF_u128`). pub val: u128, pub ty: Ty<'tcx>, } |