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[NFC][PowerPC] Return early if the element type is not byte-sized in combineBVOfConsecutiveLoads 

Summary:
Based on the Eli Friedman's comments in https://reviews.llvm.org/D60811 , we'd better return early if the element type is not byte-sized in `combineBVOfConsecutiveLoads`.

Reviewed By: efriedma
Differential Revision: https://reviews.llvm.org/D61076

llvm-svn: 359764
This commit is contained in:
Kang Zhang 2019-05-02 08:15:13 +00:00
parent c9f5220af9
commit 1a0d6d6899
1 changed files with 5 additions and 0 deletions
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5
llvm/lib/Target/PowerPC/PPCISelLowering.cpp
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@ -12201,6 +12201,11 @@ static SDValue combineBVOfConsecutiveLoads(SDNode *N, SelectionDAG &DAG) {
"Should be called with a BUILD_VECTOR node");
SDLoc dl(N);
// Return early for non byte-sized type, as they can't be consecutive.
if (!N->getValueType(0).getVectorElementType().isByteSized())
return SDValue();
bool InputsAreConsecutiveLoads = true;
bool InputsAreReverseConsecutive = true;
unsigned ElemSize = N->getValueType(0).getScalarType().getStoreSize();