From 1fb136464deda4feb6724c9874d17eb4867633c0 Mon Sep 17 00:00:00 2001
From: Owen Anderson <resistor@mac.com>
Date: Thu, 29 Nov 2007 18:02:22 +0000
Subject: [PATCH] Fix a miscompilation in spiff on PPC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44437 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/GVN.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp
index e3ce9eb62a4..7799befb3c2 100644
--- a/lib/Transforms/Scalar/GVN.cpp
+++ b/lib/Transforms/Scalar/GVN.cpp
@@ -1054,7 +1054,8 @@ bool GVN::processInstruction(Instruction* I,
       if (CI->getCalledFunction() &&
           !AA.doesNotAccessMemory(CI->getCalledFunction())) {
         MemoryDependenceAnalysis& MD = getAnalysis<MemoryDependenceAnalysis>();
-        if (MD.getDependency(CI) != MD.getDependency(cast<CallInst>(repl))) {
+        if (cast<Instruction>(repl)->getParent() != CI->getParent() ||
+            MD.getDependency(CI) != MD.getDependency(cast<CallInst>(repl))) {
           // There must be an intervening may-alias store, so nothing from
           // this point on will be able to be replaced with the preceding call
           currAvail.erase(repl);