diff options
Diffstat (limited to 'llvm/lib/Transforms/Vectorize/LoadStoreVectorizer.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Vectorize/LoadStoreVectorizer.cpp | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/llvm/lib/Transforms/Vectorize/LoadStoreVectorizer.cpp b/llvm/lib/Transforms/Vectorize/LoadStoreVectorizer.cpp index 20fbcf4533d..4409d7a404f 100644 --- a/llvm/lib/Transforms/Vectorize/LoadStoreVectorizer.cpp +++ b/llvm/lib/Transforms/Vectorize/LoadStoreVectorizer.cpp @@ -432,9 +432,12 @@ Vectorizer::splitOddVectorElts(ArrayRef<Instruction *> Chain, unsigned ElementSizeBytes = ElementSizeBits / 8; unsigned SizeBytes = ElementSizeBytes * Chain.size(); unsigned NumLeft = (SizeBytes - (SizeBytes % 4)) / ElementSizeBytes; - if (NumLeft == Chain.size()) - --NumLeft; - else if (NumLeft == 0) + if (NumLeft == Chain.size()) { + if ((NumLeft & 1) == 0) + NumLeft /= 2; // Split even in half + else + --NumLeft; // Split off last element + } else if (NumLeft == 0) NumLeft = 1; return std::make_pair(Chain.slice(0, NumLeft), Chain.slice(NumLeft)); } |
