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[X86] Promote vXi1 fp_to_uint/fp_to_sint to vXi32 to avoid scalarization.

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llvm-svn: 321632
This commit is contained in:
Craig Topper 2018-01-01 21:12:18 +00:00
parent 72ab5b2dc3
commit 9b2064424f
2 changed files with 137 additions and 3417 deletions
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33
lib/Target/X86/X86ISelLowering.cpp
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@ -1160,6 +1160,17 @@ X86TargetLowering::X86TargetLowering(const X86TargetMachine &TM,
setOperationAction(ISD::SINT_TO_FP, MVT::v2i1, Custom);
setOperationAction(ISD::UINT_TO_FP, MVT::v2i1, Custom);
setOperationPromotedToType(ISD::FP_TO_SINT, MVT::v16i1, MVT::v16i32);
setOperationPromotedToType(ISD::FP_TO_UINT, MVT::v16i1, MVT::v16i32);
setOperationPromotedToType(ISD::FP_TO_SINT, MVT::v8i1, MVT::v8i32);
setOperationPromotedToType(ISD::FP_TO_UINT, MVT::v8i1, MVT::v8i32);
setOperationPromotedToType(ISD::FP_TO_SINT, MVT::v4i1, MVT::v4i32);
setOperationPromotedToType(ISD::FP_TO_UINT, MVT::v4i1, MVT::v4i32);
if (Subtarget.hasVLX()) {
setOperationAction(ISD::FP_TO_SINT, MVT::v2i1, Custom);
setOperationAction(ISD::FP_TO_UINT, MVT::v2i1, Custom);
}
// Extends of v16i1/v8i1 to 128-bit vectors.
setOperationAction(ISD::SIGN_EXTEND, MVT::v16i8, Custom);
setOperationAction(ISD::ZERO_EXTEND, MVT::v16i8, Custom);
@ -16671,9 +16682,29 @@ SDValue X86TargetLowering::LowerFP_TO_INT(SDValue Op, SelectionDAG &DAG) const {
MVT VT = Op.getSimpleValueType();
if (VT.isVector()) {
assert(Subtarget.hasDQI() && Subtarget.hasVLX() && "Requires AVX512DQVL!");
SDValue Src = Op.getOperand(0);
SDLoc dl(Op);
if (VT == MVT::v2i1 && Src.getSimpleValueType() == MVT::v2f64) {
MVT ResVT = MVT::v4i32;
MVT TruncVT = MVT::v4i1;
unsigned Opc = IsSigned ? X86ISD::CVTTP2SI : X86ISD::CVTTP2UI;
if (!IsSigned && !Subtarget.hasVLX()) {
// Widen to 512-bits.
ResVT = MVT::v8i32;
TruncVT = MVT::v8i1;
Opc = ISD::FP_TO_UINT;
Src = DAG.getNode(ISD::INSERT_SUBVECTOR, dl, MVT::v8f64,
DAG.getUNDEF(MVT::v8f64),
Src, DAG.getIntPtrConstant(0, dl));
}
SDValue Res = DAG.getNode(Opc, dl, ResVT, Src);
Res = DAG.getNode(ISD::TRUNCATE, dl, TruncVT, Res);
return DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, MVT::v2i1, Res,
DAG.getIntPtrConstant(0, dl));
}
assert(Subtarget.hasDQI() && Subtarget.hasVLX() && "Requires AVX512DQVL!");
if (VT == MVT::v2i64 && Src.getSimpleValueType() == MVT::v2f32) {
return DAG.getNode(IsSigned ? X86ISD::CVTTP2SI : X86ISD::CVTTP2UI, dl, VT,
DAG.getNode(ISD::CONCAT_VECTORS, dl, MVT::v4f32, Src,

3521
test/CodeGen/X86/avx512-cvt.ll
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