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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-01-07 15:37:50 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-01-07 15:37:50 +0000 |
| commit | a1b8e2c7257fb635a89b39274789e120ff3c85ba (patch) | |
| tree | c20f2b47c849697cebf6d697af879ee12c1ef66d /llvm/lib | |
| parent | ffff5f16a4b2e36dae369997fa08cf8b33e777f8 (diff) | |
| download | bcm5719-llvm-a1b8e2c7257fb635a89b39274789e120ff3c85ba.tar.gz bcm5719-llvm-a1b8e2c7257fb635a89b39274789e120ff3c85ba.zip | |
[X86][AVX512] Use lowerShuffleAsRepeatedMaskAndLanePermute for non-VBMI v64i8 shuffles (PR31470)
llvm-svn: 291347
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 6 | ||||
| -rw-r--r-- | llvm/lib/Target/X86/X86TargetTransformInfo.cpp | 3 |
2 files changed, 7 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 7f72ab17f61..ad58f449478 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -12965,6 +12965,12 @@ static SDValue lowerV64I8VectorShuffle(const SDLoc &DL, ArrayRef<int> Mask, if (Subtarget.hasVBMI()) return lowerVectorShuffleWithPERMV(DL, MVT::v64i8, Mask, V1, V2, DAG); + // Try to create an in-lane repeating shuffle mask and then shuffle the + // the results into the target lanes. + if (SDValue V = lowerShuffleAsRepeatedMaskAndLanePermute( + DL, MVT::v64i8, V1, V2, Mask, Subtarget, DAG)) + return V; + // FIXME: Implement direct support for this type! return splitAndLowerVectorShuffle(DL, MVT::v64i8, V1, V2, Mask, DAG); } diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp index de4839432b9..9167c09b43f 100644 --- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp +++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp @@ -639,8 +639,7 @@ int X86TTIImpl::getShuffleCost(TTI::ShuffleKind Kind, Type *Tp, int Index, { TTI::SK_Reverse, MVT::v32i16, 1 }, // vpermw { TTI::SK_Reverse, MVT::v16i16, 1 }, // vpermw - { TTI::SK_Reverse, MVT::v64i8, 6 }, // vextracti64x4 + 2*vperm2i128 - // + 2*pshufb + vinserti64x4 + { TTI::SK_Reverse, MVT::v64i8, 2 }, // pshufb + vshufi64x2 { TTI::SK_PermuteSingleSrc, MVT::v32i16, 1 }, // vpermw { TTI::SK_PermuteSingleSrc, MVT::v16i16, 1 }, // vpermw |
