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-rw-r--r--llvm/lib/Target/X86/X86ISelLowering.cpp16
1 files changed, 16 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 433c46a8e1b..12e8f60670b 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -3790,6 +3790,7 @@ static bool isTargetShuffle(unsigned Opcode) {
case X86ISD::VPERMILPI:
case X86ISD::VPERMILPV:
case X86ISD::VPERM2X128:
+ case X86ISD::VPERMIL2:
case X86ISD::VPERMI:
case X86ISD::VPPERM:
case X86ISD::VPERMV:
@@ -4929,6 +4930,20 @@ static bool getTargetShuffleMask(SDNode *N, MVT VT, bool AllowSentinelZero,
case X86ISD::MOVLPS:
// Not yet implemented
return false;
+ case X86ISD::VPERMIL2: {
+ IsUnary = IsFakeUnary = N->getOperand(0) == N->getOperand(1);
+ unsigned MaskEltSize = VT.getScalarSizeInBits();
+ SDValue MaskNode = N->getOperand(2);
+ SDValue CtrlNode = N->getOperand(3);
+ if (ConstantSDNode *CtrlOp = dyn_cast<ConstantSDNode>(CtrlNode)) {
+ unsigned CtrlImm = CtrlOp->getZExtValue();
+ if (auto *C = getTargetShuffleMaskConstant(MaskNode)) {
+ DecodeVPERMIL2PMask(C, CtrlImm, MaskEltSize, Mask);
+ break;
+ }
+ }
+ return false;
+ }
case X86ISD::VPPERM: {
IsUnary = IsFakeUnary = N->getOperand(0) == N->getOperand(1);
SDValue MaskNode = N->getOperand(2);
@@ -30113,6 +30128,7 @@ SDValue X86TargetLowering::PerformDAGCombine(SDNode *N,
case X86ISD::MOVSD:
case X86ISD::VPPERM:
case X86ISD::VPERMV3:
+ case X86ISD::VPERMIL2:
case X86ISD::VPERMILPI:
case X86ISD::VPERMILPV:
case X86ISD::VPERM2X128:
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