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- Fix BasicAA to correctly detect the non-aliasness of A[1] & A[2]

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5518 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2003-02-09 19:27:21 +00:00
parent af28351773
commit 44f340250e
1 changed files with 2 additions and 2 deletions
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4
lib/Analysis/AliasAnalysis.cpp
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@@ -165,7 +165,7 @@ AliasAnalysis::Result BasicAliasAnalysis::alias(const Value *V1,
if (const Instruction *I = dyn_cast<CastInst>(V1)) if (const Instruction *I = dyn_cast<CastInst>(V1))
return alias(I->getOperand(0), V2); return alias(I->getOperand(0), V2);
if (const Instruction *I = dyn_cast<CastInst>(V2)) if (const Instruction *I = dyn_cast<CastInst>(V2))
return alias(I->getOperand(0), V1); return alias(V1, I->getOperand(0));
// If we have two gep instructions with identical indices, return an alias // If we have two gep instructions with identical indices, return an alias
// result equal to the alias result of the original pointer... // result equal to the alias result of the original pointer...
@@ -197,7 +197,7 @@ AliasAnalysis::Result BasicAliasAnalysis::alias(const Value *V1,
// doesn't tell us anything. // doesn't tell us anything.
// //
if (AllConstant && if (AllConstant &&
alias(GEP1->getOperand(0), GEP2->getOperand(1)) != MayAlias) alias(GEP1->getOperand(0), GEP2->getOperand(0)) != MayAlias)
return NoAlias; return NoAlias;
} }