diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 0dd20235aa3c..6b816c710f98 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -36916,11 +36916,18 @@ static SDValue canonicalizeLaneShuffleWithRepeatedOps(SDValue V, Res = DAG.getNode(SrcOpc0, DL, SrcVT0, DAG.getBitcast(SrcVT0, Res)); return DAG.getBitcast(VT, Res); } + case X86ISD::VPERMILPI: + // TODO: Handle v4f64 permutes with different low/high lane masks. + if (SrcVT0 == MVT::v4f64) { + uint64_t Mask = Src0.getConstantOperandVal(1); + if ((Mask & 0x3) != ((Mask >> 2) & 0x3)) + break; + } + LLVM_FALLTHROUGH; case X86ISD::VSHLI: case X86ISD::VSRLI: case X86ISD::VSRAI: case X86ISD::PSHUFD: - case X86ISD::VPERMILPI: if (Src1.isUndef() || Src0.getOperand(1) == Src1.getOperand(1)) { SDValue LHS = DAG.getBitcast(VT, Src0.getOperand(0)); SDValue RHS = |