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Fix PR14034, an infloop / heap corruption / crash bug in the new SROA.

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Thanks to Benjamin for the raw test case. This one took about 50 times
longer to reduce than to fix. =/

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165476 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth
2012-10-09 01:58:35 +00:00
parent 03753aa759
commit 2fdb25b5a9
2 changed files with 22 additions and 0 deletions
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lib/Transforms/Scalar/SROA.cpp
+2
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@@ -1786,6 +1786,8 @@ static Value *getNaturalGEPWithType(IRBuilder<> &IRB, const DataLayout &TD,
ElementTy = SeqTy->getElementType();
Indices.push_back(IRB.getInt(APInt(TD.getPointerSizeInBits(), 0)));
} else if (StructType *STy = dyn_cast<StructType>(ElementTy)) {
if (STy->element_begin() == STy->element_end())
break; // Nothing left to descend into.
ElementTy = *STy->element_begin();
Indices.push_back(IRB.getInt32(0));
} else {