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switch from pointer equality comparison to MDNode::getMostGenericTBAA

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when merging two TBAA tags, pointed out by Nuno.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171627 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2013-01-05 16:44:07 +00:00
parent e4b4edd72a
commit 261304248f
3 changed files with 9 additions and 8 deletions
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lib/Transforms/Scalar/LICM.cpp
+5 -3
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@@ -46,6 +46,7 @@
#include "llvm/IR/Instructions.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Metadata.h"
#include "llvm/Support/CFG.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
@@ -816,10 +817,11 @@ void LICM::PromoteAliasSet(AliasSet &AS,
if (LoopUses.empty()) {
// On the first load/store, just take its TBAA tag.
TBAATag = Use->getMetadata(LLVMContext::MD_tbaa);
} else if (TBAATag && TBAATag != Use->getMetadata(LLVMContext::MD_tbaa)) {
TBAATag = 0;
} else if (TBAATag) {
TBAATag = MDNode::getMostGenericTBAA(TBAATag,
Use->getMetadata(LLVMContext::MD_tbaa));
}
LoopUses.push_back(Use);
}
}