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[X86][SSE] movddup shuffle mask decodes

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Patch to provide shuffle decodes and asm comments for the SSE3/AVX1 movddup double duplication instructions.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226705 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Simon Pilgrim 2015-01-21 22:02:30 +00:00
parent bc1819e62e
commit a7a4b836a3
3 changed files with 52 additions and 18 deletions
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30
lib/Target/X86/InstPrinter/X86InstComments.cpp
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@ -200,12 +200,30 @@ bool llvm::EmitAnyX86InstComments(const MCInst *MI, raw_ostream &OS,
case X86::MOVSHDUPrm:
case X86::VMOVSHDUPrm:
DestName = getRegName(MI->getOperand(0).getReg());
DecodeMOVSHDUPMask(MVT::v4f32, ShuffleMask);
break;
case X86::PSLLDQri:
case X86::VPSLLDQri:
Src1Name = getRegName(MI->getOperand(1).getReg());
DecodeMOVSHDUPMask(MVT::v4f32, ShuffleMask);
break;
case X86::VMOVDDUPYrr:
Src1Name = getRegName(MI->getOperand(1).getReg());
// FALL THROUGH.
case X86::VMOVDDUPYrm:
DestName = getRegName(MI->getOperand(0).getReg());
DecodeMOVDDUPMask(MVT::v4f64, ShuffleMask);
break;
case X86::MOVDDUPrr:
case X86::VMOVDDUPrr:
Src1Name = getRegName(MI->getOperand(1).getReg());
// FALL THROUGH.
case X86::MOVDDUPrm:
case X86::VMOVDDUPrm:
DestName = getRegName(MI->getOperand(0).getReg());
DecodeMOVDDUPMask(MVT::v2f64, ShuffleMask);
break;
case X86::PSLLDQri:
case X86::VPSLLDQri:
Src1Name = getRegName(MI->getOperand(1).getReg());
DestName = getRegName(MI->getOperand(0).getReg());
if(MI->getOperand(MI->getNumOperands()-1).isImm())
DecodePSLLDQMask(MVT::v16i8,

26
lib/Target/X86/Utils/X86ShuffleDecode.cpp
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@ -76,12 +76,26 @@ void DecodeMOVSHDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask) {
for (int i = 0, e = NumElts / 2; i < e; ++i) {
ShuffleMask.push_back(2 * i + 1);
ShuffleMask.push_back(2 * i + 1);
}
}
void DecodePSLLDQMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask) {
unsigned VectorSizeInBits = VT.getSizeInBits();
unsigned NumElts = VectorSizeInBits / 8;
}
}
void DecodeMOVDDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask) {
unsigned VectorSizeInBits = VT.getSizeInBits();
unsigned ScalarSizeInBits = VT.getScalarSizeInBits();
unsigned NumElts = VT.getVectorNumElements();
unsigned NumLanes = VectorSizeInBits / 128;
unsigned NumLaneElts = NumElts / NumLanes;
unsigned NumLaneSubElts = 64 / ScalarSizeInBits;
for (unsigned l = 0; l < NumElts; l += NumLaneElts)
for (unsigned i = 0; i < NumLaneElts; i += NumLaneSubElts)
for (unsigned s = 0; s != NumLaneSubElts; s++)
ShuffleMask.push_back(l + s);
}
void DecodePSLLDQMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask) {
unsigned VectorSizeInBits = VT.getSizeInBits();
unsigned NumElts = VectorSizeInBits / 8;
unsigned NumLanes = VectorSizeInBits / 128;
unsigned NumLaneElts = NumElts / NumLanes;

14
lib/Target/X86/Utils/X86ShuffleDecode.h
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@ -37,12 +37,14 @@ void DecodeMOVHLPSMask(unsigned NElts, SmallVectorImpl<int> &ShuffleMask);
void DecodeMOVLHPSMask(unsigned NElts, SmallVectorImpl<int> &ShuffleMask);
void DecodeMOVSLDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
void DecodeMOVSHDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
void DecodePSLLDQMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
void DecodePSRLDQMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
void DecodeMOVSHDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
void DecodeMOVDDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
void DecodePSLLDQMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
void DecodePSRLDQMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
void DecodePALIGNRMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);