Auto merge of #80439 - Dylan-DPC:rollup-rdxcvon, r=Dylan-DPC

Rollup of 11 pull requests

Successful merges:

 - #79662 (Move some more code out of CodegenBackend::{codegen_crate,link})
 - #79815 (Update RELEASES.md for 1.49.0)
 - #80284 (Suggest fn ptr rather than fn item and suggest to use `Fn` trait bounds rather than the unique closure type in E0121)
 - #80331 (Add more comments to trait queries)
 - #80344 (use matches!() macro in more places)
 - #80353 (BTreeMap: test split_off (and append) more thoroughly)
 - #80362 (Document rustc_macros on nightly-rustc)
 - #80399 (Remove FIXME in rustc_privacy)
 - #80408 (Sync rustc_codegen_cranelift)
 - #80411 (rustc_span: Remove `Symbol::with`)
 - #80434 (bootstrap: put the component name in the tarball temp dir path)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

1 files changed, 3 insertions, 4 deletions

diff --git a/compiler/rustc_parse/src/parser/path.rs b/compiler/rustc_parse/src/parser/path.rs
index 4510e86e034..60a47ca12b8 100644
--- a/compiler/rustc_parse/src/parser/path.rs
+++ b/compiler/rustc_parse/src/parser/path.rs
@@ -501,10 +501,9 @@ impl<'a> Parser<'a> {
     pub(super) fn expr_is_valid_const_arg(&self, expr: &P<rustc_ast::Expr>) -> bool {
         match &expr.kind {
             ast::ExprKind::Block(_, _) | ast::ExprKind::Lit(_) => true,
-            ast::ExprKind::Unary(ast::UnOp::Neg, expr) => match &expr.kind {
-                ast::ExprKind::Lit(_) => true,
-                _ => false,
-            },
+            ast::ExprKind::Unary(ast::UnOp::Neg, expr) => {
+                matches!(expr.kind, ast::ExprKind::Lit(_))
+            }
             // We can only resolve single-segment paths at the moment, because multi-segment paths
             // require type-checking: see `visit_generic_arg` in `src/librustc_resolve/late.rs`.
             ast::ExprKind::Path(None, path)