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Add a convenient form of AliasAnalysis::alias for the case where the sizes

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are unknown.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110090 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2010-08-03 00:56:30 +00:00
parent ab37f50838
commit 847a84efd2
3 changed files with 8 additions and 6 deletions
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6
lib/Analysis/MemoryDependenceAnalysis.cpp
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@ -195,8 +195,7 @@ getPointerDependencyFrom(Value *MemPtr, uint64_t MemSize, bool isLoad,
// FIXME: This only considers queries directly on the invariant-tagged
// pointer, not on query pointers that are indexed off of them. It'd
// be nice to handle that at some point.
AliasAnalysis::AliasResult R =
AA->alias(II->getArgOperand(2), ~0U, MemPtr, ~0U);
AliasAnalysis::AliasResult R = AA->alias(II->getArgOperand(2), MemPtr);
if (R == AliasAnalysis::MustAlias) {
InvariantTag = II->getArgOperand(0);
continue;
@ -208,8 +207,7 @@ getPointerDependencyFrom(Value *MemPtr, uint64_t MemSize, bool isLoad,
// FIXME: This only considers queries directly on the invariant-tagged
// pointer, not on query pointers that are indexed off of them. It'd
// be nice to handle that at some point.
AliasAnalysis::AliasResult R =
AA->alias(II->getArgOperand(1), ~0U, MemPtr, ~0U);
AliasAnalysis::AliasResult R = AA->alias(II->getArgOperand(1), MemPtr);
if (R == AliasAnalysis::MustAlias)
return MemDepResult::getDef(II);
}