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[X86] Early out of combineInsertSubvector for mask vectors.

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The combines here shouldn't be done for mask vectors, but it wasn't clear anything was preventing that.

llvm-svn: 310786
This commit is contained in:
Craig Topper 2017-08-12 22:33:58 +00:00
parent 0174550128
commit 7a9745b858
1 changed files with 6 additions and 1 deletions
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7
lib/Target/X86/X86ISelLowering.cpp
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@ -35504,13 +35504,18 @@ static SDValue combineInsertSubvector(SDNode *N, SelectionDAG &DAG,
if (DCI.isBeforeLegalizeOps())
return SDValue();
MVT OpVT = N->getSimpleValueType(0);
// Early out for mask vectors.
if (OpVT.getVectorElementType() == MVT::i1)
return SDValue();
SDLoc dl(N);
SDValue Vec = N->getOperand(0);
SDValue SubVec = N->getOperand(1);
SDValue Idx = N->getOperand(2);
unsigned IdxVal = cast<ConstantSDNode>(Idx)->getZExtValue();
MVT OpVT = N->getSimpleValueType(0);
MVT SubVecVT = SubVec.getSimpleValueType();
// If this is an insert of an extract, combine to a shuffle. Don't do this