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 0ae7b5b254b..9db9d11904c 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -34316,6 +34316,14 @@ static SDValue combineHorizontalPredicateResult(SDNode *Extract, if (DAG.ComputeNumSignBits(Match) != BitWidth) return SDValue(); + SDLoc DL(Extract); + if (MatchSizeInBits == 256 && BitWidth < 32 && !Subtarget.hasInt256()) { + SDValue Lo, Hi; + std::tie(Lo, Hi) = DAG.SplitVector(Match, DL); + Match = DAG.getNode(BinOp, DL, Lo.getValueType(), Lo, Hi); + MatchSizeInBits = Match.getValueSizeInBits(); + } + // For 32/64 bit comparisons use MOVMSKPS/MOVMSKPD, else PMOVMSKB. MVT MaskSrcVT; if (64 == BitWidth || 32 == BitWidth) @@ -34324,7 +34332,6 @@ static SDValue combineHorizontalPredicateResult(SDNode *Extract, else MaskSrcVT = MVT::getVectorVT(MVT::i8, MatchSizeInBits / 8); - SDLoc DL(Extract); SDValue CmpC; ISD::CondCode CondCode; if (BinOp == ISD::OR) { |
