From 529bd53411c6f583fd8ed435adf4c0f923d185fd Mon Sep 17 00:00:00 2001
From: Torok Edwin <edwintorok@gmail.com>
Date: Sun, 4 May 2008 08:51:25 +0000
Subject: [PATCH] processStore may delete the instruction, avoid using
 dyn_cast<> on already freed memory.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50618 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/MemCpyOptimizer.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/Transforms/Scalar/MemCpyOptimizer.cpp b/lib/Transforms/Scalar/MemCpyOptimizer.cpp
index d6e5f3964bb..8036bf89d5f 100644
--- a/lib/Transforms/Scalar/MemCpyOptimizer.cpp
+++ b/lib/Transforms/Scalar/MemCpyOptimizer.cpp
@@ -718,8 +718,7 @@ bool MemCpyOpt::iterateOnFunction(Function &F) {
       
       if (StoreInst *SI = dyn_cast<StoreInst>(I))
         changed_function |= processStore(SI, BI);
-
-      if (MemCpyInst* M = dyn_cast<MemCpyInst>(I)) {
+      else if (MemCpyInst* M = dyn_cast<MemCpyInst>(I)) {
         changed_function |= processMemCpy(M);
       }
     }