Rollup merge of #142371 - fee1-dead-contrib:push-xqlkumzurkus, r=petrochenkov

avoid `&mut P<T>` in `visit_expr` etc methods

trying a different way than rust-lang/rust#141636
r? ghost

2 files changed, 3 insertions, 4 deletions

diff --git a/compiler/rustc_builtin_macros/src/cfg_eval.rs b/compiler/rustc_builtin_macros/src/cfg_eval.rs
index da01e3e9607..fe44350863c 100644
--- a/compiler/rustc_builtin_macros/src/cfg_eval.rs
+++ b/compiler/rustc_builtin_macros/src/cfg_eval.rs
@@ -155,7 +155,7 @@ impl CfgEval<'_> {
 
 impl MutVisitor for CfgEval<'_> {
     #[instrument(level = "trace", skip(self))]
-    fn visit_expr(&mut self, expr: &mut P<ast::Expr>) {
+    fn visit_expr(&mut self, expr: &mut ast::Expr) {
         self.0.configure_expr(expr, false);
         mut_visit::walk_expr(self, expr);
     }
diff --git a/compiler/rustc_builtin_macros/src/deriving/coerce_pointee.rs b/compiler/rustc_builtin_macros/src/deriving/coerce_pointee.rs
index 0794192621a..3a20b39798d 100644
--- a/compiler/rustc_builtin_macros/src/deriving/coerce_pointee.rs
+++ b/compiler/rustc_builtin_macros/src/deriving/coerce_pointee.rs
@@ -1,5 +1,4 @@
 use ast::HasAttrs;
-use ast::ptr::P;
 use rustc_ast::mut_visit::MutVisitor;
 use rustc_ast::visit::BoundKind;
 use rustc_ast::{
@@ -378,11 +377,11 @@ struct TypeSubstitution<'a> {
 }
 
 impl<'a> ast::mut_visit::MutVisitor for TypeSubstitution<'a> {
-    fn visit_ty(&mut self, ty: &mut P<ast::Ty>) {
+    fn visit_ty(&mut self, ty: &mut ast::Ty) {
         if let Some(name) = ty.kind.is_simple_path()
             && name == self.from_name
         {
-            **ty = self.to_ty.clone();
+            *ty = self.to_ty.clone();
             self.rewritten = true;
         } else {
             ast::mut_visit::walk_ty(self, ty);