Auto merge of #51492 - petrochenkov:hirident, r=eddyb

Use `Ident`s in HIR and remove emulation of hygiene with gensyms

continuation of https://github.com/rust-lang/rust/pull/51072, part of https://github.com/rust-lang/rust/issues/49300

Not all `Name`s in HIR are replaced with `Ident`s, only those needed for hygiene or already having attached spans.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs
index 21bd6c08324..faf2cf64e1d 100644
--- a/src/libsyntax/parse/parser.rs
+++ b/src/libsyntax/parse/parser.rs
@@ -7325,7 +7325,7 @@ impl<'a> Parser<'a> {
             match self.token {
                 token::Ident(ident, false) if ident.name == keywords::Underscore.name() => {
                     self.bump(); // `_`
-                    Ok(Some(Ident::new(ident.name.gensymed(), ident.span)))
+                    Ok(Some(ident.gensym()))
                 }
                 _ => self.parse_ident().map(Some),
             }