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[DAGCombine] narrowInsertExtractVectorBinOp - early out for binops that change value type. NFCI.

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This is implicit in the value type checks in getSubVectorSrc - this just makes it upfront and obvious.

llvm-svn: 367220
This commit is contained in:
Simon Pilgrim 2019-07-29 11:34:45 +00:00
parent 4b1a7112ea
commit 3c0bd0262f
1 changed files with 4 additions and 0 deletions
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lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -18020,7 +18020,11 @@ static SDValue narrowInsertExtractVectorBinOp(SDNode *Extract,
if (!TLI.isBinOp(BinOpcode) || BinOp.getNode()->getNumValues() != 1) if (!TLI.isBinOp(BinOpcode) || BinOp.getNode()->getNumValues() != 1)
return SDValue(); return SDValue();
EVT VecVT = BinOp.getValueType();
SDValue Bop0 = BinOp.getOperand(0), Bop1 = BinOp.getOperand(1); SDValue Bop0 = BinOp.getOperand(0), Bop1 = BinOp.getOperand(1);
if (VecVT != Bop0.getValueType() || VecVT != Bop1.getValueType())
return SDValue();
SDValue Index = Extract->getOperand(1); SDValue Index = Extract->getOperand(1);
EVT SubVT = Extract->getValueType(0); EVT SubVT = Extract->getValueType(0);
if (!TLI.isOperationLegalOrCustom(BinOpcode, SubVT)) if (!TLI.isOperationLegalOrCustom(BinOpcode, SubVT))