diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 048fc29660e..246f2e91eb7 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -5868,8 +5868,7 @@ static bool getFauxShuffleMask(SDValue N, SmallVectorImpl<int> &Mask, assert(SrcExtract.getOperand(0).getValueType() == MVT::v16i8); } - if (!SrcExtract || !isa<ConstantSDNode>(SrcExtract.getOperand(1)) || - NumElts <= SrcExtract.getConstantOperandVal(1)) + if (!SrcExtract || !isa<ConstantSDNode>(SrcExtract.getOperand(1))) return false; SDValue SrcVec = SrcExtract.getOperand(0); @@ -5877,8 +5876,12 @@ static bool getFauxShuffleMask(SDValue N, SmallVectorImpl<int> &Mask, unsigned NumSrcElts = SrcVT.getVectorNumElements(); unsigned NumZeros = (NumBitsPerElt / SrcVT.getScalarSizeInBits()) - 1; + unsigned SrcIdx = SrcExtract.getConstantOperandVal(1); + if (NumSrcElts <= SrcIdx) + return false; + Ops.push_back(SrcVec); - Mask.push_back(SrcExtract.getConstantOperandVal(1)); + Mask.push_back(SrcIdx); Mask.append(NumZeros, SM_SentinelZero); Mask.append(NumSrcElts - Mask.size(), SM_SentinelUndef); return true; |
