Rollup of 20 pull requests

compiler/rustc_abi/src/lib.rs

@@ -67,12 +67,6 @@ pub use layout::{FIRST_VARIANT, FieldIdx, LayoutCalculator, LayoutCalculatorErro
 #[cfg(feature = "nightly")]
 pub use layout::{Layout, TyAbiInterface, TyAndLayout};
 
-/// Requirements for a `StableHashingContext` to be used in this crate.
-/// This is a hack to allow using the `HashStable_Generic` derive macro
-/// instead of implementing everything in `rustc_middle`.
-#[cfg(feature = "nightly")]
-pub trait HashStableContext {}
-
 #[derive(Clone, Copy, PartialEq, Eq, Default)]
 #[cfg_attr(
     feature = "nightly",

compiler/rustc_ast/src/ast.rs

@@ -31,7 +31,8 @@ use rustc_data_structures::tagged_ptr::Tag;
 use rustc_macros::{Decodable, Encodable, HashStable_Generic, Walkable};
 pub use rustc_span::AttrId;
 use rustc_span::{
-    ByteSymbol, DUMMY_SP, ErrorGuaranteed, Ident, Span, Spanned, Symbol, kw, respan, sym,
+    ByteSymbol, DUMMY_SP, ErrorGuaranteed, HashStableContext, Ident, Span, Spanned, Symbol, kw,
+    respan, sym,
 };
 use thin_vec::{ThinVec, thin_vec};
 
@@ -120,7 +121,7 @@ impl PartialEq<&[Symbol]> for Path {
     }
 }
 
-impl<Hcx: rustc_span::HashStableContext> HashStable<Hcx> for Path {
+impl<Hcx: HashStableContext> HashStable<Hcx> for Path {
     fn hash_stable(&self, hcx: &mut Hcx, hasher: &mut StableHasher) {
         self.segments.len().hash_stable(hcx, hasher);
         for segment in &self.segments {

compiler/rustc_ast/src/lib.rs

@@ -36,8 +36,3 @@ pub mod visit;
 
 pub use self::ast::*;
 pub use self::ast_traits::{AstNodeWrapper, HasAttrs, HasNodeId, HasTokens};
-
-/// Requirements for a `StableHashingContext` to be used in this crate.
-/// This is a hack to allow using the `HashStable_Generic` derive macro
-/// instead of implementing everything in `rustc_middle`.
-pub trait HashStableContext: rustc_span::HashStableContext {}

compiler/rustc_ast/src/tokenstream.rs

@@ -14,7 +14,7 @@ use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
 use rustc_data_structures::sync;
 use rustc_macros::{Decodable, Encodable, HashStable_Generic, Walkable};
 use rustc_serialize::{Decodable, Encodable};
-use rustc_span::{DUMMY_SP, Span, SpanDecoder, SpanEncoder, Symbol, sym};
+use rustc_span::{DUMMY_SP, HashStableContext, Span, SpanDecoder, SpanEncoder, Symbol, sym};
 use thin_vec::ThinVec;
 
 use crate::ast::AttrStyle;
@@ -826,7 +826,7 @@ impl FromIterator<TokenTree> for TokenStream {
 
 impl<Hcx> HashStable<Hcx> for TokenStream
 where
-    Hcx: crate::HashStableContext,
+    Hcx: HashStableContext,
 {
     fn hash_stable(&self, hcx: &mut Hcx, hasher: &mut StableHasher) {
         for sub_tt in self.iter() {

compiler/rustc_ast_lowering/src/lib.rs

@@ -2683,7 +2683,7 @@ impl<'hir, R: ResolverAstLoweringExt<'hir>> LoweringContext<'_, 'hir, R> {
                 overly_complex_const(self)
             }
             ExprKind::Lit(literal) => {
-                let span = expr.span;
+                let span = self.lower_span(expr.span);
                 let literal = self.lower_lit(literal, span);
 
                 ConstArg {
@@ -2695,7 +2695,7 @@ impl<'hir, R: ResolverAstLoweringExt<'hir>> LoweringContext<'_, 'hir, R> {
             ExprKind::Unary(UnOp::Neg, inner_expr)
                 if let ExprKind::Lit(literal) = &inner_expr.kind =>
             {
-                let span = expr.span;
+                let span = self.lower_span(expr.span);
                 let literal = self.lower_lit(literal, span);
 
                 if !matches!(literal.node, LitKind::Int(..)) {