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Add testcase and fix for another case where we query the size an

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abstract type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18676 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alkis Evlogimenos
2004-12-08 23:42:11 +00:00
parent 5cb77fb193
commit a95cf3024b
2 changed files with 36 additions and 7 deletions
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19
lib/Analysis/BasicAliasAnalysis.cpp
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@@ -410,13 +410,18 @@ BasicAliasAnalysis::alias(const Value *V1, unsigned V1Size,
// the size of the argument... build an index vector that is equal to
// the arguments provided, except substitute 0's for any variable
// indexes we find...
for (unsigned i = 0; i != GEPOperands.size(); ++i)
if (!isa<ConstantInt>(GEPOperands[i]))
GEPOperands[i] =Constant::getNullValue(GEPOperands[i]->getType());
int64_t Offset = getTargetData().getIndexedOffset(BasePtr->getType(),
GEPOperands);
if (Offset >= (int64_t)V2Size || Offset <= -(int64_t)V1Size)
return NoAlias;
if (cast<PointerType>(
BasePtr->getType())->getElementType()->isSized()) {
for (unsigned i = 0; i != GEPOperands.size(); ++i)
if (!isa<ConstantInt>(GEPOperands[i]))
GEPOperands[i] =
Constant::getNullValue(GEPOperands[i]->getType());
int64_t Offset =
getTargetData().getIndexedOffset(BasePtr->getType(), GEPOperands);
if (Offset >= (int64_t)V2Size || Offset <= -(int64_t)V1Size)
return NoAlias;
}
}
}
}