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[X86] Remove an unnecessary SmallVector from LowerBUILD_VECTOR.

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I think this may have existed to convert from SDUse to SDValue, but it doesn't look like its needed now.

llvm-svn: 313311
This commit is contained in:
Craig Topper 2017-09-14 22:47:59 +00:00
parent 43e732c065
commit 3bcc062cdc
1 changed files with 2 additions and 4 deletions
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6
lib/Target/X86/X86ISelLowering.cpp
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@ -7814,15 +7814,13 @@ X86TargetLowering::LowerBUILD_VECTOR(SDValue Op, SelectionDAG &DAG) const {
// For AVX-length vectors, build the individual 128-bit pieces and use
// shuffles to put them in place.
if (VT.is256BitVector() || VT.is512BitVector()) {
SmallVector<SDValue, 64> Ops(Op->op_begin(), Op->op_begin() + NumElems);
EVT HVT = EVT::getVectorVT(*DAG.getContext(), ExtVT, NumElems/2);
// Build both the lower and upper subvector.
SDValue Lower =
DAG.getBuildVector(HVT, dl, makeArrayRef(&Ops[0], NumElems / 2));
DAG.getBuildVector(HVT, dl, Op->ops().slice(0, NumElems / 2));
SDValue Upper = DAG.getBuildVector(
HVT, dl, makeArrayRef(&Ops[NumElems / 2], NumElems / 2));
HVT, dl, Op->ops().slice(NumElems / 2, NumElems /2));
// Recreate the wider vector with the lower and upper part.
if (VT.is256BitVector())