From a1beca6845541c05e33ffb35a352aaadb0db09a8 Mon Sep 17 00:00:00 2001
From: Duncan Sands <baldrick@free.fr>
Date: Sun, 4 Nov 2012 09:02:45 +0000
Subject: Apply the patch from PR14160.  I failed to construct a testcase for
 this, but I'm applying it anyway since it seems to be obviously correct.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167370 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Analysis/BasicAliasAnalysis.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'lib/Analysis')

diff --git a/lib/Analysis/BasicAliasAnalysis.cpp b/lib/Analysis/BasicAliasAnalysis.cpp
index 263bfc031f..131b9d65e6 100644
--- a/lib/Analysis/BasicAliasAnalysis.cpp
+++ b/lib/Analysis/BasicAliasAnalysis.cpp
@@ -1245,6 +1245,7 @@ BasicAliasAnalysis::aliasCheck(const Value *V1, uint64_t V1Size,
     std::swap(V1, V2);
     std::swap(V1Size, V2Size);
     std::swap(O1, O2);
+    std::swap(V1TBAAInfo, V2TBAAInfo);
   }
   if (const GEPOperator *GV1 = dyn_cast<GEPOperator>(V1)) {
     AliasResult Result = aliasGEP(GV1, V1Size, V1TBAAInfo, V2, V2Size, V2TBAAInfo, O1, O2);
@@ -1254,6 +1255,7 @@ BasicAliasAnalysis::aliasCheck(const Value *V1, uint64_t V1Size,
   if (isa<PHINode>(V2) && !isa<PHINode>(V1)) {
     std::swap(V1, V2);
     std::swap(V1Size, V2Size);
+    std::swap(V1TBAAInfo, V2TBAAInfo);
   }
   if (const PHINode *PN = dyn_cast<PHINode>(V1)) {
     AliasResult Result = aliasPHI(PN, V1Size, V1TBAAInfo,
@@ -1264,6 +1266,7 @@ BasicAliasAnalysis::aliasCheck(const Value *V1, uint64_t V1Size,
   if (isa<SelectInst>(V2) && !isa<SelectInst>(V1)) {
     std::swap(V1, V2);
     std::swap(V1Size, V2Size);
+    std::swap(V1TBAAInfo, V2TBAAInfo);
   }
   if (const SelectInst *S1 = dyn_cast<SelectInst>(V1)) {
     AliasResult Result = aliasSelect(S1, V1Size, V1TBAAInfo,
-- 
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