From: Dan Gohman <gohman@apple.com>
Date: Thu, 26 Jul 2007 16:14:06 +0000 (+0000)
Subject: Fix the alias analysis query in DAGCombiner to not add in two
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=559742c0eae0a7368eb5f67cde7a3599eaf82ade;p=oota-llvm.git

Fix the alias analysis query in DAGCombiner to not add in two
offsets. The SrcValueOffset values are the real offsets from the
SrcValue base pointers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40534 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 22c6e6b396c..b38b479cbe8 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -4599,8 +4599,8 @@ bool DAGCombiner::isAlias(SDOperand Ptr1, int64_t Size1,
 
   if (CombinerGlobalAA) {
     // Use alias analysis information.
-    int Overlap1 = Size1 + SrcValueOffset1 + Offset1;
-    int Overlap2 = Size2 + SrcValueOffset2 + Offset2;
+    int Overlap1 = Size1 + SrcValueOffset1;
+    int Overlap2 = Size2 + SrcValueOffset2;
     AliasAnalysis::AliasResult AAResult = 
                              AA.alias(SrcValue1, Overlap1, SrcValue2, Overlap2);
     if (AAResult == AliasAnalysis::NoAlias)