Track volatile aggregate copies better. I'm hoping someone else will decide

how to get the backend to know that the operation is volatile.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72348 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 1 deletions

diff --git a/lib/CodeGen/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h
index 130bc369e3..9a9ca05768 100644
--- a/lib/CodeGen/CodeGenFunction.h
+++ b/lib/CodeGen/CodeGenFunction.h
@@ -419,8 +419,12 @@ public:
   RValue EmitAnyExprToTemp(const Expr *E, llvm::Value *AggLoc = 0,
                            bool isAggLocVolatile = false);
 
+  /// EmitAggregateCopy - Emit an aggrate copy.
+  ///
+  /// \param isVolatile - True iff either the source or the destination is
+  /// volatile.
   void EmitAggregateCopy(llvm::Value *DestPtr, llvm::Value *SrcPtr,
-                         QualType EltTy);
+                         QualType EltTy, bool isVolatile=false);
 
   void EmitAggregateClear(llvm::Value *DestPtr, QualType Ty);