diff options
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index dca940dd433..f8e05711346 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -9841,17 +9841,14 @@ static SDValue lowerV8I16VectorShuffle(SDValue Op, SDValue V1, SDValue V2, assert(V1.getSimpleValueType() == MVT::v8i16 && "Bad operand type!"); assert(V2.getSimpleValueType() == MVT::v8i16 && "Bad operand type!"); ShuffleVectorSDNode *SVOp = cast<ShuffleVectorSDNode>(Op); - ArrayRef<int> OrigMask = SVOp->getMask(); - int MaskStorage[8] = {OrigMask[0], OrigMask[1], OrigMask[2], OrigMask[3], - OrigMask[4], OrigMask[5], OrigMask[6], OrigMask[7]}; - MutableArrayRef<int> Mask(MaskStorage); + ArrayRef<int> Mask = SVOp->getMask(); assert(Mask.size() == 8 && "Unexpected mask size for v8 shuffle!"); // Whenever we can lower this as a zext, that instruction is strictly faster // than any alternative. if (SDValue ZExt = lowerVectorShuffleAsZeroOrAnyExtend( - DL, MVT::v8i16, V1, V2, OrigMask, Subtarget, DAG)) + DL, MVT::v8i16, V1, V2, Mask, Subtarget, DAG)) return ZExt; int NumV2Inputs = count_if(Mask, [](int M) { return M >= 8; }); @@ -9877,8 +9874,11 @@ static SDValue lowerV8I16VectorShuffle(SDValue Op, SDValue V1, SDValue V2, Mask, Subtarget, DAG)) return Rotate; - return lowerV8I16GeneralSingleInputVectorShuffle(DL, MVT::v8i16, V1, Mask, - Subtarget, DAG); + // Make a copy of the mask so it can be modified. + SmallVector<int, 8> MutableMask(Mask.begin(), Mask.end()); + return lowerV8I16GeneralSingleInputVectorShuffle(DL, MVT::v8i16, V1, + MutableMask, Subtarget, + DAG); } assert(llvm::any_of(Mask, [](int M) { return M >= 0 && M < 8; }) && |
