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Add shuffle decode support for VPERMQ/VPERMPD.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156265 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper 2012-05-06 18:44:02 +00:00
parent 8e27c96159
commit 156f5bb56e
3 changed files with 22 additions and 0 deletions
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10
lib/Target/X86/InstPrinter/X86InstComments.cpp
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@ -507,6 +507,16 @@ void llvm::EmitAnyX86InstComments(const MCInst *MI, raw_ostream &OS,
Src1Name = getRegName(MI->getOperand(1).getReg());
DestName = getRegName(MI->getOperand(0).getReg());
break;
case X86::VPERMQYri:
case X86::VPERMPDYri:
Src1Name = getRegName(MI->getOperand(1).getReg());
// FALL THROUGH.
case X86::VPERMQYmi:
case X86::VPERMPDYmi:
DecodeVPERMMask(MI->getOperand(MI->getNumOperands()-1).getImm(),
ShuffleMask);
DestName = getRegName(MI->getOperand(0).getReg());
break;
}

8
lib/Target/X86/Utils/X86ShuffleDecode.cpp
View File

@ -192,4 +192,12 @@ void DecodeVPERM2X128Mask(EVT VT, unsigned Imm,
ShuffleMask.push_back(i);
}
/// DecodeVPERMMask - this decodes the shuffle masks for VPERMQ/VPERMPD.
/// No VT provided since it only works on 256-bit, 4 element vectors.
void DecodeVPERMMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask) {
for (unsigned i = 0; i != 4; ++i) {
ShuffleMask.push_back((Imm >> (2*i)) & 3);
}
}
} // llvm namespace

4
lib/Target/X86/Utils/X86ShuffleDecode.h
View File

@ -60,6 +60,10 @@ void DecodeUNPCKLMask(EVT VT, SmallVectorImpl<int> &ShuffleMask);
void DecodeVPERM2X128Mask(EVT VT, unsigned Imm,
SmallVectorImpl<int> &ShuffleMask);
/// DecodeVPERMMask - this decodes the shuffle masks for VPERMQ/VPERMPD.
/// No VT provided since it only works on 256-bit, 4 element vectors.
void DecodeVPERMMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
} // llvm namespace
#endif