diff options
| author | David Majnemer <david.majnemer@gmail.com> | 2015-06-05 10:52:40 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2015-06-05 10:52:40 +0000 |
| commit | b58f32f7a84e98b51fd87ac9b49dba02b06fa7bc (patch) | |
| tree | b6b3e7cacdb97e21f8eb1aec699a3ea881131974 /llvm/lib/Transforms/Utils/LoopUtils.cpp | |
| parent | eb33134ce791de41bc2fd2f11eb3d7732e009ce5 (diff) | |
| download | llvm-b58f32f7a84e98b51fd87ac9b49dba02b06fa7bc.zip llvm-b58f32f7a84e98b51fd87ac9b49dba02b06fa7bc.tar.gz llvm-b58f32f7a84e98b51fd87ac9b49dba02b06fa7bc.tar.bz2 | |
[LoopVectorize] Don't crash on zero-sized types in isInductionPHI
isInductionPHI wants to calculate the stride based on the pointee size.
However, this is not possible when the pointee is zero sized.
This fixes PR23763.
llvm-svn: 239143
Diffstat (limited to 'llvm/lib/Transforms/Utils/LoopUtils.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/LoopUtils.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Utils/LoopUtils.cpp b/llvm/lib/Transforms/Utils/LoopUtils.cpp index a5890c0..5f25e6b 100644 --- a/llvm/lib/Transforms/Utils/LoopUtils.cpp +++ b/llvm/lib/Transforms/Utils/LoopUtils.cpp @@ -491,6 +491,9 @@ bool llvm::isInductionPHI(PHINode *Phi, ScalarEvolution *SE, const DataLayout &DL = Phi->getModule()->getDataLayout(); int64_t Size = static_cast<int64_t>(DL.getTypeAllocSize(PointerElementType)); + if (!Size) + return false; + int64_t CVSize = CV->getSExtValue(); if (CVSize % Size) return false; |