Rollup merge of #79080 - camelid:mir-visit-debuginfo-project, r=jonas-schievink

MIR visitor: Don't treat debuginfo field access as a use of the struct

Fixes #77454.

r? `@jonas-schievink`

1 files changed, 1 insertions, 7 deletions

diff --git a/compiler/rustc_mir/src/transform/validate.rs b/compiler/rustc_mir/src/transform/validate.rs
index 919e4a90a17..29b90bff210 100644
--- a/compiler/rustc_mir/src/transform/validate.rs
+++ b/compiler/rustc_mir/src/transform/validate.rs
@@ -12,7 +12,7 @@ use rustc_middle::mir::traversal;
 use rustc_middle::mir::visit::{PlaceContext, Visitor};
 use rustc_middle::mir::{
     AggregateKind, BasicBlock, Body, BorrowKind, Local, Location, MirPhase, Operand, PlaceRef,
-    Rvalue, SourceScope, Statement, StatementKind, Terminator, TerminatorKind, VarDebugInfo,
+    Rvalue, SourceScope, Statement, StatementKind, Terminator, TerminatorKind,
 };
 use rustc_middle::ty::fold::BottomUpFolder;
 use rustc_middle::ty::{self, ParamEnv, Ty, TyCtxt, TypeFoldable};
@@ -200,12 +200,6 @@ impl<'a, 'tcx> Visitor<'tcx> for TypeChecker<'a, 'tcx> {
         }
     }
 
-    fn visit_var_debug_info(&mut self, var_debug_info: &VarDebugInfo<'tcx>) {
-        // Debuginfo can contain field projections, which count as a use of the base local. Skip
-        // debuginfo so that we avoid the storage liveness assertion in that case.
-        self.visit_source_info(&var_debug_info.source_info);
-    }
-
     fn visit_operand(&mut self, operand: &Operand<'tcx>, location: Location) {
         // This check is somewhat expensive, so only run it when -Zvalidate-mir is passed.
         if self.tcx.sess.opts.debugging_opts.validate_mir {