diff options
Diffstat (limited to 'llvm/lib/Target/X86')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 521fc3cd37b..daba879c7fc 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -39582,7 +39582,7 @@ static SDValue canonicalizeBitSelect(SDNode *N, SelectionDAG &DAG, const X86Subtarget &Subtarget) { assert(N->getOpcode() == ISD::OR && "Unexpected Opcode"); - EVT VT = N->getValueType(0); + MVT VT = N->getSimpleValueType(0); if (!VT.isVector() || (VT.getScalarSizeInBits() % 8) != 0) return SDValue(); @@ -39591,10 +39591,12 @@ static SDValue canonicalizeBitSelect(SDNode *N, SelectionDAG &DAG, if (N0.getOpcode() != ISD::AND || N1.getOpcode() != ISD::AND) return SDValue(); - // On XOP we'll lower to PCMOV so accept one use, otherwise only - // do this if either mask has multiple uses already. - if (!(Subtarget.hasXOP() || !N0.getOperand(1).hasOneUse() || - !N1.getOperand(1).hasOneUse())) + // On XOP we'll lower to PCMOV so accept one use. With AVX512, we can use + // VPTERNLOG. Otherwise only do this if either mask has multiple uses already. + bool UseVPTERNLOG = (Subtarget.hasAVX512() && VT.is512BitVector()) || + Subtarget.hasVLX(); + if (!(Subtarget.hasXOP() || UseVPTERNLOG || + !N0.getOperand(1).hasOneUse() || !N1.getOperand(1).hasOneUse())) return SDValue(); // Attempt to extract constant byte masks. |
