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Set NonLocalDepInfo's Size field to UnknownSize when invalidating

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it, so that it doesn't appear to be a known size.

llvm-svn: 118748
This commit is contained in:
Dan Gohman 2010-11-11 00:20:27 +00:00
parent 313b78d28e
commit b476dc0f55
2 changed files with 6 additions and 6 deletions
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2
include/llvm/Analysis/MemoryDependenceAnalysis.h
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@ -234,7 +234,7 @@ namespace llvm {
/// pointer. May be null if there are no tags or conflicting tags.
const MDNode *TBAATag;
NonLocalPointerInfo() : Size(0), TBAATag(0) {}
NonLocalPointerInfo() : Size(AliasAnalysis::UnknownSize), TBAATag(0) {}
};
/// CachedNonLocalPointerInfo - This map stores the cached results of doing

10
lib/Analysis/MemoryDependenceAnalysis.cpp
View File

@ -860,7 +860,7 @@ getNonLocalPointerDepFromBB(const PHITransAddr &Pointer,
CacheInfo->Pair = BBSkipFirstBlockPair(StartBB, SkipFirstBlock);
else {
CacheInfo->Pair = BBSkipFirstBlockPair();
CacheInfo->Size = 0;
CacheInfo->Size = AliasAnalysis::UnknownSize;
CacheInfo->TBAATag = 0;
}
@ -986,7 +986,7 @@ getNonLocalPointerDepFromBB(const PHITransAddr &Pointer,
// cached value to do more work but not miss the phi trans failure.
NonLocalPointerInfo &NLPI = NonLocalPointerDeps[CacheKey];
NLPI.Pair = BBSkipFirstBlockPair();
NLPI.Size = 0;
NLPI.Size = AliasAnalysis::UnknownSize;
NLPI.TBAATag = 0;
continue;
}
@ -1015,7 +1015,7 @@ getNonLocalPointerDepFromBB(const PHITransAddr &Pointer,
// specific block queries) but we can't do the fastpath "return all
// results from the set" Clear out the indicator for this.
CacheInfo->Pair = BBSkipFirstBlockPair();
CacheInfo->Size = 0;
CacheInfo->Size = AliasAnalysis::UnknownSize;
CacheInfo->TBAATag = 0;
SkipFirstBlock = false;
continue;
@ -1034,7 +1034,7 @@ getNonLocalPointerDepFromBB(const PHITransAddr &Pointer,
// specific block queries) but we can't do the fastpath "return all
// results from the set". Clear out the indicator for this.
CacheInfo->Pair = BBSkipFirstBlockPair();
CacheInfo->Size = 0;
CacheInfo->Size = AliasAnalysis::UnknownSize;
CacheInfo->TBAATag = 0;
// If *nothing* works, mark the pointer as being clobbered by the first
@ -1252,7 +1252,7 @@ void MemoryDependenceAnalysis::removeInstruction(Instruction *RemInst) {
// The cache is not valid for any specific block anymore.
NonLocalPointerDeps[P].Pair = BBSkipFirstBlockPair();
NonLocalPointerDeps[P].Size = 0;
NonLocalPointerDeps[P].Size = AliasAnalysis::UnknownSize;
NonLocalPointerDeps[P].TBAATag = 0;
// Update any entries for RemInst to use the instruction after it.