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[X86] Remove dead code from getMaskNode that looked for a i64 mask with a maskVT that wasn't v64i1. NFC 

llvm-svn: 324857
This commit is contained in:
Craig Topper 2018-02-11 22:32:29 +00:00
parent a7ac028a6b
commit 38d61c38a2
1 changed files with 11 additions and 19 deletions
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30
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -19782,27 +19782,19 @@ static SDValue getMaskNode(SDValue Mask, MVT MaskVT,
}
if (Mask.getSimpleValueType() == MVT::i64 && Subtarget.is32Bit()) {
if (MaskVT == MVT::v64i1) {
assert(Subtarget.hasBWI() && "Expected AVX512BW target!");
// In case 32bit mode, bitcast i64 is illegal, extend/split it.
SDValue Lo, Hi;
Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, MVT::i32, Mask,
DAG.getConstant(0, dl, MVT::i32));
Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, MVT::i32, Mask,
DAG.getConstant(1, dl, MVT::i32));
assert(MaskVT == MVT::v64i1 && "Expected v64i1 mask!");
assert(Subtarget.hasBWI() && "Expected AVX512BW target!");
// In case 32bit mode, bitcast i64 is illegal, extend/split it.
SDValue Lo, Hi;
Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, MVT::i32, Mask,
DAG.getConstant(0, dl, MVT::i32));
Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, MVT::i32, Mask,
DAG.getConstant(1, dl, MVT::i32));
Lo = DAG.getBitcast(MVT::v32i1, Lo);
Hi = DAG.getBitcast(MVT::v32i1, Hi);
return DAG.getNode(ISD::CONCAT_VECTORS, dl, MVT::v64i1, Lo, Hi);
} else {
// MaskVT require < 64bit. Truncate mask (should succeed in any case),
// and bitcast.
MVT TruncVT = MVT::getIntegerVT(MaskVT.getSizeInBits());
return DAG.getBitcast(MaskVT,
DAG.getNode(ISD::TRUNCATE, dl, TruncVT, Mask));
}
Lo = DAG.getBitcast(MVT::v32i1, Lo);
Hi = DAG.getBitcast(MVT::v32i1, Hi);
return DAG.getNode(ISD::CONCAT_VECTORS, dl, MVT::v64i1, Lo, Hi);
} else {
MVT BitcastVT = MVT::getVectorVT(MVT::i1,
Mask.getSimpleValueType().getSizeInBits());