diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 6eb190fa10a..9c02303ed11 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -11765,6 +11765,10 @@ static SDValue lowerV16F32VectorShuffle(SDLoc DL, ArrayRef<int> Mask, return DAG.getNode(X86ISD::MOVSLDUP, DL, MVT::v16f32, V1); if (isShuffleEquivalent(V1, V2, RepeatedMask, {1, 1, 3, 3})) return DAG.getNode(X86ISD::MOVSHDUP, DL, MVT::v16f32, V1); + + if (V2.isUndef()) + return DAG.getNode(X86ISD::VPERMILPI, DL, MVT::v16f32, V1, + getV4X86ShuffleImm8ForMask(RepeatedMask, DL, DAG)); } if (SDValue Unpck = |
