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fail to find dimensions when ElementSize is nullptr

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when ScalarEvolution::getElementSize returns nullptr it is safe to early return
in ScalarEvolution::findArrayDimensions such that we avoid later problems when
we try to divide the terms by ElementSize.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209837 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sebastian Pop 2014-05-29 19:44:05 +00:00
parent d4d04199ac
commit e741924230
1 changed files with 1 additions and 1 deletions
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2
lib/Analysis/ScalarEvolution.cpp
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@ -7370,7 +7370,7 @@ void ScalarEvolution::findArrayDimensions(SmallVectorImpl<const SCEV *> &Terms,
SmallVectorImpl<const SCEV *> &Sizes,
const SCEV *ElementSize) const {
if (Terms.size() < 1)
if (Terms.size() < 1 || !ElementSize)
return;
// Early return when Terms do not contain parameters: we do not delinearize