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Fix DeadStoreElimination/2004-11-28-LiveStoreDeleted.ll

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18308 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-11-28 20:30:15 +00:00
parent f4a0e5093c
commit eaf8f9c667
1 changed files with 3 additions and 3 deletions
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6
lib/Analysis/BasicAliasAnalysis.cpp
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@ -297,7 +297,7 @@ BasicAliasAnalysis::alias(const Value *V1, unsigned V1Size,
// undefined to load or store bytes before or after an object).
const Type *ElTy = cast<PointerType>(O1->getType())->getElementType();
unsigned GlobalSize = getTargetData().getTypeSize(ElTy);
if (GlobalSize < V2Size)
if (GlobalSize < V2Size && V2Size != ~0U)
return NoAlias;
}
}
@ -313,7 +313,7 @@ BasicAliasAnalysis::alias(const Value *V1, unsigned V1Size,
// undefined to load or store bytes before or after an object).
const Type *ElTy = cast<PointerType>(O2->getType())->getElementType();
unsigned GlobalSize = getTargetData().getTypeSize(ElTy);
if (GlobalSize < V1Size)
if (GlobalSize < V1Size && V1Size != ~0U)
return NoAlias;
}
}
@ -496,7 +496,7 @@ CheckGEPInstructions(const Type* BasePtr1Ty, std::vector<Value*> &GEP1Ops,
// A[i][0] != A[j][1] iff (&A[0][1]-&A[0][0] >= std::max(G1S, G2S))
//
unsigned SizeMax = std::max(G1S, G2S);
if (SizeMax == ~0U) return MayAlias; // Avoid frivolous work...
if (SizeMax == ~0U) return MayAlias; // Avoid frivolous work.
// Scan for the first operand that is constant and unequal in the
// two getelementptrs...