When performing return slot optimization, remember to inform memdep when we're removi...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47364 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp
index 2ecc0e5d1f25277a863138f47973cd30724b5847..481956f6b4ce039dbb5307cc558372ce9e4c5d06 100644 (file)
--- a/lib/Transforms/Scalar/GVN.cpp
+++ b/lib/Transforms/Scalar/GVN.cpp
@@ -1139,6 +1139,7 @@ bool GVN::performReturnSlotOptzn(MemCpyInst* cpy, CallInst* C,
   MD.dropInstruction(C);
   
   // Remove the memcpy
+  MD.removeInstruction(cpy);
   toErase.push_back(cpy);
   
   return true;