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[X86] Merge v2f32 and v2i32 gather/scatter handling in ReplaceNodeResults/LowerMSCATTER now that v2i32 is also widened like v2f32. 

llvm-svn: 368389
This commit is contained in:
Craig Topper 2019-08-09 03:09:28 +00:00
parent 6f81db0f68
commit 0da681a2be
1 changed files with 12 additions and 86 deletions
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98
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -27024,12 +27024,13 @@ static SDValue LowerMSCATTER(SDValue Op, const X86Subtarget &Subtarget,
SDValue Chain = N->getChain();
SDValue BasePtr = N->getBasePtr();
if (VT == MVT::v2f32) {
if (VT == MVT::v2f32 || VT == MVT::v2i32) {
assert(Mask.getValueType() == MVT::v2i1 && "Unexpected mask type");
// If the index is v2i64 and we have VLX we can use xmm for data and index.
if (Index.getValueType() == MVT::v2i64 && Subtarget.hasVLX()) {
Src = DAG.getNode(ISD::CONCAT_VECTORS, dl, MVT::v4f32, Src,
DAG.getUNDEF(MVT::v2f32));
const TargetLowering &TLI = DAG.getTargetLoweringInfo();
EVT WideVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
Src = DAG.getNode(ISD::CONCAT_VECTORS, dl, WideVT, Src, DAG.getUNDEF(VT));
SDVTList VTs = DAG.getVTList(MVT::v2i1, MVT::Other);
SDValue Ops[] = {Chain, Src, Mask, BasePtr, Index, Scale};
SDValue NewScatter = DAG.getTargetMemSDNode<X86MaskedScatterSDNode>(
@ -27039,30 +27040,6 @@ static SDValue LowerMSCATTER(SDValue Op, const X86Subtarget &Subtarget,
return SDValue();
}
if (VT == MVT::v2i32) {
assert(Mask.getValueType() == MVT::v2i1 && "Unexpected mask type");
Src = DAG.getNode(ISD::CONCAT_VECTORS, dl, MVT::v4i32, Src,
DAG.getUNDEF(MVT::v2i32));
// If the index is v2i64 and we have VLX we can use xmm for data and index.
if (Index.getValueType() == MVT::v2i64 && Subtarget.hasVLX()) {
SDVTList VTs = DAG.getVTList(MVT::v2i1, MVT::Other);
SDValue Ops[] = {Chain, Src, Mask, BasePtr, Index, Scale};
SDValue NewScatter = DAG.getTargetMemSDNode<X86MaskedScatterSDNode>(
VTs, Ops, dl, N->getMemoryVT(), N->getMemOperand());
return SDValue(NewScatter.getNode(), 1);
}
// Custom widen all the operands to avoid promotion.
EVT NewIndexVT = EVT::getVectorVT(
*DAG.getContext(), Index.getValueType().getVectorElementType(), 4);
Index = DAG.getNode(ISD::CONCAT_VECTORS, dl, NewIndexVT, Index,
DAG.getUNDEF(Index.getValueType()));
Mask = DAG.getNode(ISD::CONCAT_VECTORS, dl, MVT::v4i1, Mask,
DAG.getConstant(0, dl, MVT::v2i1));
SDValue Ops[] = {Chain, Src, Mask, BasePtr, Index, Scale};
return DAG.getMaskedScatter(DAG.getVTList(MVT::Other), N->getMemoryVT(), dl,
Ops, N->getMemOperand(), N->getIndexType());
}
MVT IndexVT = Index.getSimpleValueType();
MVT MaskVT = Mask.getSimpleValueType();
@ -28108,16 +28085,20 @@ void X86TargetLowering::ReplaceNodeResults(SDNode *N,
}
case ISD::MGATHER: {
EVT VT = N->getValueType(0);
if (VT == MVT::v2f32 && (Subtarget.hasVLX() || !Subtarget.hasAVX512())) {
if ((VT == MVT::v2f32 || VT == MVT::v2i32) &&
(Subtarget.hasVLX() || !Subtarget.hasAVX512())) {
auto *Gather = cast<MaskedGatherSDNode>(N);
SDValue Index = Gather->getIndex();
if (Index.getValueType() != MVT::v2i64)
return;
assert(getTypeAction(*DAG.getContext(), VT) == TypeWidenVector &&
"Unexpected type action!");
EVT WideVT = getTypeToTransformTo(*DAG.getContext(), VT);
SDValue Mask = Gather->getMask();
assert(Mask.getValueType() == MVT::v2i1 && "Unexpected mask type");
SDValue PassThru = DAG.getNode(ISD::CONCAT_VECTORS, dl, MVT::v4f32,
SDValue PassThru = DAG.getNode(ISD::CONCAT_VECTORS, dl, WideVT,
Gather->getPassThru(),
DAG.getUNDEF(MVT::v2f32));
DAG.getUNDEF(VT));
if (!Subtarget.hasVLX()) {
// We need to widen the mask, but the instruction will only use 2
// of its elements. So we can use undef.
@ -28128,67 +28109,12 @@ void X86TargetLowering::ReplaceNodeResults(SDNode *N,
SDValue Ops[] = { Gather->getChain(), PassThru, Mask,
Gather->getBasePtr(), Index, Gather->getScale() };
SDValue Res = DAG.getTargetMemSDNode<X86MaskedGatherSDNode>(
DAG.getVTList(MVT::v4f32, Mask.getValueType(), MVT::Other), Ops, dl,
DAG.getVTList(WideVT, Mask.getValueType(), MVT::Other), Ops, dl,
Gather->getMemoryVT(), Gather->getMemOperand());
Results.push_back(Res);
Results.push_back(Res.getValue(2));
return;
}
if (VT == MVT::v2i32) {
auto *Gather = cast<MaskedGatherSDNode>(N);
SDValue Index = Gather->getIndex();
SDValue Mask = Gather->getMask();
assert(Mask.getValueType() == MVT::v2i1 && "Unexpected mask type");
SDValue PassThru = DAG.getNode(ISD::CONCAT_VECTORS, dl, MVT::v4i32,
Gather->getPassThru(),
DAG.getUNDEF(MVT::v2i32));
// If the index is v2i64 we can use it directly.
if (Index.getValueType() == MVT::v2i64 &&
(Subtarget.hasVLX() || !Subtarget.hasAVX512())) {
if (!Subtarget.hasVLX()) {
// We need to widen the mask, but the instruction will only use 2
// of its elements. So we can use undef.
Mask = DAG.getNode(ISD::CONCAT_VECTORS, dl, MVT::v4i1, Mask,
DAG.getUNDEF(MVT::v2i1));
Mask = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::v4i32, Mask);
}
SDValue Ops[] = { Gather->getChain(), PassThru, Mask,
Gather->getBasePtr(), Index, Gather->getScale() };
SDValue Res = DAG.getTargetMemSDNode<X86MaskedGatherSDNode>(
DAG.getVTList(MVT::v4i32, Mask.getValueType(), MVT::Other), Ops, dl,
Gather->getMemoryVT(), Gather->getMemOperand());
SDValue Chain = Res.getValue(2);
if (getTypeAction(*DAG.getContext(), VT) != TypeWidenVector)
Res = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, MVT::v2i32, Res,
DAG.getIntPtrConstant(0, dl));
Results.push_back(Res);
Results.push_back(Chain);
return;
}
if (getTypeAction(*DAG.getContext(), VT) != TypeWidenVector) {
EVT IndexVT = Index.getValueType();
EVT NewIndexVT = EVT::getVectorVT(*DAG.getContext(),
IndexVT.getScalarType(), 4);
// Otherwise we need to custom widen everything to avoid promotion.
Index = DAG.getNode(ISD::CONCAT_VECTORS, dl, NewIndexVT, Index,
DAG.getUNDEF(IndexVT));
Mask = DAG.getNode(ISD::CONCAT_VECTORS, dl, MVT::v4i1, Mask,
DAG.getConstant(0, dl, MVT::v2i1));
SDValue Ops[] = { Gather->getChain(), PassThru, Mask,
Gather->getBasePtr(), Index, Gather->getScale() };
SDValue Res = DAG.getMaskedGather(DAG.getVTList(MVT::v4i32, MVT::Other),
Gather->getMemoryVT(), dl, Ops,
Gather->getMemOperand(),
Gather->getIndexType());
SDValue Chain = Res.getValue(1);
if (getTypeAction(*DAG.getContext(), MVT::v2i32) != TypeWidenVector)
Res = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, MVT::v2i32, Res,
DAG.getIntPtrConstant(0, dl));
Results.push_back(Res);
Results.push_back(Chain);
return;
}
}
return;
}
case ISD::LOAD: {