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Don't attempt to handle unsized types in ScalarEvolution's GEP analyzer.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71302 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-05-09 00:14:52 +00:00
parent f045f80ba9
commit c63a62735b
1 changed files with 3 additions and 0 deletions
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3
lib/Analysis/ScalarEvolution.cpp
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@ -1935,6 +1935,9 @@ SCEVHandle ScalarEvolution::createNodeForGEP(User *GEP) {
const Type *IntPtrTy = TD->getIntPtrType();
Value *Base = GEP->getOperand(0);
// Don't attempt to analyze GEPs over unsized objects.
if (!cast<PointerType>(Base->getType())->getElementType()->isSized())
return getUnknown(GEP);
SCEVHandle TotalOffset = getIntegerSCEV(0, IntPtrTy);
gep_type_iterator GTI = gep_type_begin(GEP);
for (GetElementPtrInst::op_iterator I = next(GEP->op_begin()),