diff options
Diffstat (limited to 'lib/Target/X86')
| -rw-r--r-- | lib/Target/X86/Utils/X86ShuffleDecode.cpp | 3 | ||||
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/X86/Utils/X86ShuffleDecode.cpp b/lib/Target/X86/Utils/X86ShuffleDecode.cpp index 32c722a..a802333 100644 --- a/lib/Target/X86/Utils/X86ShuffleDecode.cpp +++ b/lib/Target/X86/Utils/X86ShuffleDecode.cpp @@ -169,6 +169,9 @@ void DecodeUNPCKLMask(EVT VT, SmallVectorImpl<int> &ShuffleMask) { void DecodeVPERM2X128Mask(EVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask) { + if (Imm & 0x88) + return; // Not a shuffle + unsigned HalfSize = VT.getVectorNumElements()/2; unsigned FstHalfBegin = (Imm & 0x3) * HalfSize; unsigned SndHalfBegin = ((Imm >> 4) & 0x3) * HalfSize; diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 8418bb1..1ff60dc 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -4430,6 +4430,7 @@ static bool getTargetShuffleMask(SDNode *N, EVT VT, case X86ISD::VPERM2X128: ImmN = N->getOperand(N->getNumOperands()-1); DecodeVPERM2X128Mask(VT, cast<ConstantSDNode>(ImmN)->getZExtValue(), Mask); + if (Mask.empty()) return false; break; case X86ISD::MOVDDUP: case X86ISD::MOVLHPD: |