Merge pull request rust-lang#18431 from lnicola/sync-from-rust

minor: Sync from downstream

Author: lnicola

Cargo.lock

@@ -4029,6 +4029,7 @@ dependencies = [
  "rustc_hir",
  "rustc_hir_pretty",
  "rustc_index",
+ "rustc_lint_defs",
  "rustc_macros",
  "rustc_query_system",
  "rustc_serialize",
@@ -4495,14 +4496,14 @@ name = "rustc_transmute"
 version = "0.0.0"
 dependencies = [
  "itertools",
+ "rustc_abi",
  "rustc_ast_ir",
  "rustc_data_structures",
  "rustc_hir",
  "rustc_infer",
  "rustc_macros",
  "rustc_middle",
  "rustc_span",
- "rustc_target",
  "tracing",
 ]
 

RELEASES.md

@@ -68,15 +68,15 @@ Stabilized APIs
 - [`impl Default for std::collections::vec_deque::Iter`](https://doc.rust-lang.org/nightly/std/collections/vec_deque/struct.Iter.html#impl-Default-for-Iter%3C'_,+T%3E)
 - [`impl Default for std::collections::vec_deque::IterMut`](https://doc.rust-lang.org/nightly/std/collections/vec_deque/struct.IterMut.html#impl-Default-for-IterMut%3C'_,+T%3E)
 - [`Rc<T>::new_uninit`](https://doc.rust-lang.org/nightly/std/rc/struct.Rc.html#method.new_uninit)
-- [`Rc<T>::assume_init`](https://doc.rust-lang.org/nightly/std/rc/struct.Rc.html#method.assume_init)
+- [`Rc<MaybeUninit<T>>::assume_init`](https://doc.rust-lang.org/nightly/std/rc/struct.Rc.html#method.assume_init)
 - [`Rc<[T]>::new_uninit_slice`](https://doc.rust-lang.org/nightly/std/rc/struct.Rc.html#method.new_uninit_slice)
 - [`Rc<[MaybeUninit<T>]>::assume_init`](https://doc.rust-lang.org/nightly/std/rc/struct.Rc.html#method.assume_init-1)
 - [`Arc<T>::new_uninit`](https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.new_uninit)
-- [`Arc<T>::assume_init`](https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.assume_init)
+- [`Arc<MaybeUninit<T>>::assume_init`](https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.assume_init)
 - [`Arc<[T]>::new_uninit_slice`](https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.new_uninit_slice)
 - [`Arc<[MaybeUninit<T>]>::assume_init`](https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.assume_init-1)
 - [`Box<T>::new_uninit`](https://doc.rust-lang.org/nightly/std/boxed/struct.Box.html#method.new_uninit)
-- [`Box<T>::assume_init`](https://doc.rust-lang.org/nightly/std/boxed/struct.Box.html#method.assume_init)
+- [`Box<MaybeUninit<T>>::assume_init`](https://doc.rust-lang.org/nightly/std/boxed/struct.Box.html#method.assume_init)
 - [`Box<[T]>::new_uninit_slice`](https://doc.rust-lang.org/nightly/std/boxed/struct.Box.html#method.new_uninit_slice)
 - [`Box<[MaybeUninit<T>]>::assume_init`](https://doc.rust-lang.org/nightly/std/boxed/struct.Box.html#method.assume_init-1)
 - [`core::arch::x86_64::_bextri_u64`](https://doc.rust-lang.org/stable/core/arch/x86_64/fn._bextri_u64.html)

compiler/rustc_abi/src/layout.rs

@@ -7,7 +7,7 @@ use tracing::debug;
 
 use crate::{
     Abi, AbiAndPrefAlign, Align, FieldsShape, HasDataLayout, IndexSlice, IndexVec, Integer,
-    LayoutS, Niche, NonZeroUsize, Primitive, ReprOptions, Scalar, Size, StructKind, TagEncoding,
+    LayoutData, Niche, NonZeroUsize, Primitive, ReprOptions, Scalar, Size, StructKind, TagEncoding,
     Variants, WrappingRange,
 };
 
@@ -26,7 +26,7 @@ fn absent<'a, FieldIdx, VariantIdx, F>(fields: &IndexSlice<FieldIdx, F>) -> bool
 where
     FieldIdx: Idx,
     VariantIdx: Idx,
-    F: Deref<Target = &'a LayoutS<FieldIdx, VariantIdx>> + fmt::Debug,
+    F: Deref<Target = &'a LayoutData<FieldIdx, VariantIdx>> + fmt::Debug,
 {
     let uninhabited = fields.iter().any(|f| f.abi.is_uninhabited());
     // We cannot ignore alignment; that might lead us to entirely discard a variant and
@@ -89,7 +89,7 @@ impl<F> LayoutCalculatorError<F> {
 }
 
 type LayoutCalculatorResult<FieldIdx, VariantIdx, F> =
-    Result<LayoutS<FieldIdx, VariantIdx>, LayoutCalculatorError<F>>;
+    Result<LayoutData<FieldIdx, VariantIdx>, LayoutCalculatorError<F>>;
 
 #[derive(Clone, Copy, Debug)]
 pub struct LayoutCalculator<Cx> {
@@ -105,7 +105,7 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
         &self,
         a: Scalar,
         b: Scalar,
-    ) -> LayoutS<FieldIdx, VariantIdx> {
+    ) -> LayoutData<FieldIdx, VariantIdx> {
         let dl = self.cx.data_layout();
         let b_align = b.align(dl);
         let align = a.align(dl).max(b_align).max(dl.aggregate_align);
@@ -119,7 +119,7 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
             .chain(Niche::from_scalar(dl, Size::ZERO, a))
             .max_by_key(|niche| niche.available(dl));
 
-        LayoutS {
+        LayoutData {
             variants: Variants::Single { index: VariantIdx::new(0) },
             fields: FieldsShape::Arbitrary {
                 offsets: [Size::ZERO, b_offset].into(),
@@ -138,7 +138,7 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
         'a,
         FieldIdx: Idx,
         VariantIdx: Idx,
-        F: Deref<Target = &'a LayoutS<FieldIdx, VariantIdx>> + fmt::Debug + Copy,
+        F: Deref<Target = &'a LayoutData<FieldIdx, VariantIdx>> + fmt::Debug + Copy,
     >(
         &self,
         fields: &IndexSlice<FieldIdx, F>,
@@ -211,9 +211,9 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
 
     pub fn layout_of_never_type<FieldIdx: Idx, VariantIdx: Idx>(
         &self,
-    ) -> LayoutS<FieldIdx, VariantIdx> {
+    ) -> LayoutData<FieldIdx, VariantIdx> {
         let dl = self.cx.data_layout();
-        LayoutS {
+        LayoutData {
             variants: Variants::Single { index: VariantIdx::new(0) },
             fields: FieldsShape::Primitive,
             abi: Abi::Uninhabited,
@@ -229,7 +229,7 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
         'a,
         FieldIdx: Idx,
         VariantIdx: Idx,
-        F: Deref<Target = &'a LayoutS<FieldIdx, VariantIdx>> + fmt::Debug + Copy,
+        F: Deref<Target = &'a LayoutData<FieldIdx, VariantIdx>> + fmt::Debug + Copy,
     >(
         &self,
         repr: &ReprOptions,
@@ -292,7 +292,7 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
         'a,
         FieldIdx: Idx,
         VariantIdx: Idx,
-        F: Deref<Target = &'a LayoutS<FieldIdx, VariantIdx>> + fmt::Debug + Copy,
+        F: Deref<Target = &'a LayoutData<FieldIdx, VariantIdx>> + fmt::Debug + Copy,
     >(
         &self,
         repr: &ReprOptions,
@@ -384,7 +384,7 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
             return Err(LayoutCalculatorError::EmptyUnion);
         };
 
-        Ok(LayoutS {
+        Ok(LayoutData {
             variants: Variants::Single { index: only_variant_idx },
             fields: FieldsShape::Union(union_field_count),
             abi,
@@ -401,7 +401,7 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
         'a,
         FieldIdx: Idx,
         VariantIdx: Idx,
-        F: Deref<Target = &'a LayoutS<FieldIdx, VariantIdx>> + fmt::Debug + Copy,
+        F: Deref<Target = &'a LayoutData<FieldIdx, VariantIdx>> + fmt::Debug + Copy,
     >(
         &self,
         repr: &ReprOptions,
@@ -501,7 +501,7 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
         'a,
         FieldIdx: Idx,
         VariantIdx: Idx,
-        F: Deref<Target = &'a LayoutS<FieldIdx, VariantIdx>> + fmt::Debug + Copy,
+        F: Deref<Target = &'a LayoutData<FieldIdx, VariantIdx>> + fmt::Debug + Copy,
     >(
         &self,
         repr: &ReprOptions,
@@ -516,8 +516,8 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
         // overall LayoutS. Store the overall LayoutS
         // and the variant LayoutSs here until then.
         struct TmpLayout<FieldIdx: Idx, VariantIdx: Idx> {
-            layout: LayoutS<FieldIdx, VariantIdx>,
-            variants: IndexVec<VariantIdx, LayoutS<FieldIdx, VariantIdx>>,
+            layout: LayoutData<FieldIdx, VariantIdx>,
+            variants: IndexVec<VariantIdx, LayoutData<FieldIdx, VariantIdx>>,
         }
 
         let dl = self.cx.data_layout();
@@ -649,7 +649,7 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
                 Abi::Aggregate { sized: true }
             };
 
-            let layout = LayoutS {
+            let layout = LayoutData {
                 variants: Variants::Multiple {
                     tag: niche_scalar,
                     tag_encoding: TagEncoding::Niche {
@@ -958,7 +958,7 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
 
         let largest_niche = Niche::from_scalar(dl, Size::ZERO, tag);
 
-        let tagged_layout = LayoutS {
+        let tagged_layout = LayoutData {
             variants: Variants::Multiple {
                 tag,
                 tag_encoding: TagEncoding::Direct,
@@ -1013,7 +1013,7 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
         'a,
         FieldIdx: Idx,
         VariantIdx: Idx,
-        F: Deref<Target = &'a LayoutS<FieldIdx, VariantIdx>> + fmt::Debug + Copy,
+        F: Deref<Target = &'a LayoutData<FieldIdx, VariantIdx>> + fmt::Debug + Copy,
     >(
         &self,
         fields: &IndexSlice<FieldIdx, F>,
@@ -1341,7 +1341,7 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
             unadjusted_abi_align
         };
 
-        Ok(LayoutS {
+        Ok(LayoutData {
             variants: Variants::Single { index: VariantIdx::new(0) },
             fields: FieldsShape::Arbitrary { offsets, memory_index },
             abi,
@@ -1357,10 +1357,10 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
         'a,
         FieldIdx: Idx,
         VariantIdx: Idx,
-        F: Deref<Target = &'a LayoutS<FieldIdx, VariantIdx>> + fmt::Debug,
+        F: Deref<Target = &'a LayoutData<FieldIdx, VariantIdx>> + fmt::Debug,
     >(
         &self,
-        layout: &LayoutS<FieldIdx, VariantIdx>,
+        layout: &LayoutData<FieldIdx, VariantIdx>,
         fields: &IndexSlice<FieldIdx, F>,
     ) -> String {
         let dl = self.cx.data_layout();

compiler/rustc_abi/src/layout/ty.rs

@@ -58,7 +58,7 @@ rustc_index::newtype_index! {
 }
 #[derive(Copy, Clone, PartialEq, Eq, Hash, HashStable_Generic)]
 #[rustc_pass_by_value]
-pub struct Layout<'a>(pub Interned<'a, LayoutS<FieldIdx, VariantIdx>>);
+pub struct Layout<'a>(pub Interned<'a, LayoutData<FieldIdx, VariantIdx>>);
 
 impl<'a> fmt::Debug for Layout<'a> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
@@ -68,8 +68,8 @@ impl<'a> fmt::Debug for Layout<'a> {
 }
 
 impl<'a> Deref for Layout<'a> {
-    type Target = &'a LayoutS<FieldIdx, VariantIdx>;
-    fn deref(&self) -> &&'a LayoutS<FieldIdx, VariantIdx> {
+    type Target = &'a LayoutData<FieldIdx, VariantIdx>;
+    fn deref(&self) -> &&'a LayoutData<FieldIdx, VariantIdx> {
         &self.0.0
     }
 }
@@ -142,8 +142,8 @@ impl<'a, Ty: fmt::Display> fmt::Debug for TyAndLayout<'a, Ty> {
 }
 
 impl<'a, Ty> Deref for TyAndLayout<'a, Ty> {
-    type Target = &'a LayoutS<FieldIdx, VariantIdx>;
-    fn deref(&self) -> &&'a LayoutS<FieldIdx, VariantIdx> {
+    type Target = &'a LayoutData<FieldIdx, VariantIdx>;
+    fn deref(&self) -> &&'a LayoutData<FieldIdx, VariantIdx> {
         &self.layout.0.0
     }
 }

compiler/rustc_abi/src/lib.rs

@@ -1485,7 +1485,7 @@ pub enum Variants<FieldIdx: Idx, VariantIdx: Idx> {
         tag: Scalar,
         tag_encoding: TagEncoding<VariantIdx>,
         tag_field: usize,
-        variants: IndexVec<VariantIdx, LayoutS<FieldIdx, VariantIdx>>,
+        variants: IndexVec<VariantIdx, LayoutData<FieldIdx, VariantIdx>>,
     },
 }
 
@@ -1603,7 +1603,7 @@ impl Niche {
 // NOTE: This struct is generic over the FieldIdx and VariantIdx for rust-analyzer usage.
 #[derive(PartialEq, Eq, Hash, Clone)]
 #[cfg_attr(feature = "nightly", derive(HashStable_Generic))]
-pub struct LayoutS<FieldIdx: Idx, VariantIdx: Idx> {
+pub struct LayoutData<FieldIdx: Idx, VariantIdx: Idx> {
     /// Says where the fields are located within the layout.
     pub fields: FieldsShape<FieldIdx>,
 
@@ -1643,7 +1643,7 @@ pub struct LayoutS<FieldIdx: Idx, VariantIdx: Idx> {
     pub unadjusted_abi_align: Align,
 }
 
-impl<FieldIdx: Idx, VariantIdx: Idx> LayoutS<FieldIdx, VariantIdx> {
+impl<FieldIdx: Idx, VariantIdx: Idx> LayoutData<FieldIdx, VariantIdx> {
     /// Returns `true` if this is an aggregate type (including a ScalarPair!)
     pub fn is_aggregate(&self) -> bool {
         match self.abi {
@@ -1656,7 +1656,7 @@ impl<FieldIdx: Idx, VariantIdx: Idx> LayoutS<FieldIdx, VariantIdx> {
         let largest_niche = Niche::from_scalar(cx, Size::ZERO, scalar);
         let size = scalar.size(cx);
         let align = scalar.align(cx);
-        LayoutS {
+        LayoutData {
             variants: Variants::Single { index: VariantIdx::new(0) },
             fields: FieldsShape::Primitive,
             abi: Abi::Scalar(scalar),
@@ -1669,7 +1669,7 @@ impl<FieldIdx: Idx, VariantIdx: Idx> LayoutS<FieldIdx, VariantIdx> {
     }
 }
 
-impl<FieldIdx: Idx, VariantIdx: Idx> fmt::Debug for LayoutS<FieldIdx, VariantIdx>
+impl<FieldIdx: Idx, VariantIdx: Idx> fmt::Debug for LayoutData<FieldIdx, VariantIdx>
 where
     FieldsShape<FieldIdx>: fmt::Debug,
     Variants<FieldIdx, VariantIdx>: fmt::Debug,
@@ -1678,7 +1678,7 @@ where
         // This is how `Layout` used to print before it become
         // `Interned<LayoutS>`. We print it like this to avoid having to update
         // expected output in a lot of tests.
-        let LayoutS {
+        let LayoutData {
             size,
             align,
             abi,
@@ -1723,7 +1723,7 @@ pub struct PointeeInfo {
     pub safe: Option<PointerKind>,
 }
 
-impl<FieldIdx: Idx, VariantIdx: Idx> LayoutS<FieldIdx, VariantIdx> {
+impl<FieldIdx: Idx, VariantIdx: Idx> LayoutData<FieldIdx, VariantIdx> {
     /// Returns `true` if the layout corresponds to an unsized type.
     #[inline]
     pub fn is_unsized(&self) -> bool {

compiler/rustc_ast/src/ast.rs

@@ -2697,7 +2697,7 @@ impl fmt::Debug for ImplPolarity {
 }
 
 /// The polarity of a trait bound.
-#[derive(Copy, Clone, PartialEq, Eq, Encodable, Decodable, Debug)]
+#[derive(Copy, Clone, PartialEq, Eq, Encodable, Decodable, Debug, Hash)]
 #[derive(HashStable_Generic)]
 pub enum BoundPolarity {
     /// `Type: Trait`
@@ -2719,7 +2719,7 @@ impl BoundPolarity {
 }
 
 /// The constness of a trait bound.
-#[derive(Copy, Clone, PartialEq, Eq, Encodable, Decodable, Debug)]
+#[derive(Copy, Clone, PartialEq, Eq, Encodable, Decodable, Debug, Hash)]
 #[derive(HashStable_Generic)]
 pub enum BoundConstness {
     /// `Type: Trait`

compiler/rustc_ast/src/attr/mod.rs

@@ -223,7 +223,7 @@ impl AttrItem {
         self.args.span().map_or(self.path.span, |args_span| self.path.span.to(args_span))
     }
 
-    fn meta_item_list(&self) -> Option<ThinVec<MetaItemInner>> {
+    pub fn meta_item_list(&self) -> Option<ThinVec<MetaItemInner>> {
         match &self.args {
             AttrArgs::Delimited(args) if args.delim == Delimiter::Parenthesis => {
                 MetaItemKind::list_from_tokens(args.tokens.clone())