Stop lowering spans for HIR.

Author: cjgillot

compiler/rustc_ast_lowering/src/asm.rs

@@ -237,7 +237,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                         hir::InlineAsmOperand::Label { block: self.lower_block(block, false) }
                     }
                 };
-                (op, self.lower_span(*op_sp))
+                (op, *op_sp)
             })
             .collect();
 
@@ -463,7 +463,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                             late: true,
                             expr: None,
                         },
-                        self.lower_span(abi_span),
+                        abi_span,
                     ));
                     clobbered.insert(clobber);
                 }
@@ -497,12 +497,9 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
         let operands = self.arena.alloc_from_iter(operands);
         let template = self.arena.alloc_from_iter(asm.template.iter().cloned());
         let template_strs = self.arena.alloc_from_iter(
-            asm.template_strs
-                .iter()
-                .map(|(sym, snippet, span)| (*sym, *snippet, self.lower_span(*span))),
+            asm.template_strs.iter().map(|(sym, snippet, span)| (*sym, *snippet, *span)),
         );
-        let line_spans =
-            self.arena.alloc_from_iter(asm.line_spans.iter().map(|span| self.lower_span(*span)));
+        let line_spans = self.arena.alloc_from_iter(asm.line_spans.iter().copied());
         let hir_asm = hir::InlineAsm {
             asm_macro: asm.asm_macro,
             template,

compiler/rustc_ast_lowering/src/block.rs

@@ -23,7 +23,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
     ) -> hir::Block<'hir> {
         let (stmts, expr) = self.lower_stmts(&b.stmts);
         let rules = self.lower_block_check_mode(&b.rules);
-        hir::Block { hir_id, stmts, expr, rules, span: self.lower_span(b.span), targeted_by_break }
+        hir::Block { hir_id, stmts, expr, rules, span: b.span, targeted_by_break }
     }
 
     fn lower_stmts(
@@ -39,7 +39,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                     let local = self.lower_local(local);
                     self.alias_attrs(hir_id, local.hir_id);
                     let kind = hir::StmtKind::Let(local);
-                    let span = self.lower_span(s.span);
+                    let span = s.span;
                     stmts.push(hir::Stmt { hir_id, kind, span });
                 }
                 StmtKind::Item(it) => {
@@ -50,7 +50,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                                 _ => self.next_id(),
                             };
                             let kind = hir::StmtKind::Item(item_id);
-                            let span = self.lower_span(s.span);
+                            let span = s.span;
                             hir::Stmt { hir_id, kind, span }
                         },
                     ));
@@ -63,7 +63,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                         let hir_id = self.lower_node_id(s.id);
                         self.alias_attrs(hir_id, e.hir_id);
                         let kind = hir::StmtKind::Expr(e);
-                        let span = self.lower_span(s.span);
+                        let span = s.span;
                         stmts.push(hir::Stmt { hir_id, kind, span });
                     }
                 }
@@ -72,7 +72,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                     let hir_id = self.lower_node_id(s.id);
                     self.alias_attrs(hir_id, e.hir_id);
                     let kind = hir::StmtKind::Semi(e);
-                    let span = self.lower_span(s.span);
+                    let span = s.span;
                     stmts.push(hir::Stmt { hir_id, kind, span });
                 }
                 StmtKind::Empty => {}
@@ -107,7 +107,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
         } else {
             None
         };
-        let span = self.lower_span(l.span);
+        let span = l.span;
         let source = hir::LocalSource::Normal;
         self.lower_attrs(hir_id, &l.attrs, l.span);
         self.arena.alloc(hir::LetStmt { hir_id, super_, ty, pat, init, els, span, source })

compiler/rustc_ast_lowering/src/delegation.rs

@@ -83,7 +83,7 @@ impl<'hir> LoweringContext<'_, 'hir> {
         item_id: NodeId,
         is_in_trait_impl: bool,
     ) -> DelegationResults<'hir> {
-        let span = self.lower_span(delegation.path.segments.last().unwrap().ident.span);
+        let span = delegation.path.segments.last().unwrap().ident.span;
         let sig_id = self.get_delegation_sig_id(item_id, delegation.id, span, is_in_trait_impl);
         match sig_id {
             Ok(sig_id) => {
@@ -92,9 +92,8 @@ impl<'hir> LoweringContext<'_, 'hir> {
                 let decl = self.lower_delegation_decl(sig_id, param_count, c_variadic, span);
                 let sig = self.lower_delegation_sig(sig_id, decl, span);
                 let body_id = self.lower_delegation_body(delegation, is_method, param_count, span);
-                let ident = self.lower_ident(delegation.ident);
                 let generics = self.lower_delegation_generics(span);
-                DelegationResults { body_id, sig, ident, generics }
+                DelegationResults { body_id, sig, ident: delegation.ident, generics }
             }
             Err(err) => self.generate_delegation_error(err, span),
         }