From 61d30a821f372ca4185fc518023f857fbcb9c0f5 Mon Sep 17 00:00:00 2001
From: Owen Anderson <resistor@mac.com>
Date: Wed, 20 Feb 2008 08:23:02 +0000
Subject: [PATCH] When performing return slot optimization, remember to inform
 memdep when we're removing the memcpy.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47364 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/GVN.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp
index 2ecc0e5d1f2..481956f6b4c 100644
--- 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;