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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-04-11 13:30:38 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-04-11 13:30:38 +0000 |
| commit | e468cc7f146f081067003429db61c6350a85fd2e (patch) | |
| tree | cdb47769acf6dec58f9657d5d90b05fd2e4fa2ce /llvm/lib/Target | |
| parent | 3aeb6585d3e911eb130e997a072436e78a22061d (diff) | |
| download | bcm5719-llvm-e468cc7f146f081067003429db61c6350a85fd2e.tar.gz bcm5719-llvm-e468cc7f146f081067003429db61c6350a85fd2e.zip | |
[X86] SimplifyDemandedVectorElts - add VPPERM support
We need to add support for all variable shuffle mask ops, but VPPERM is the only one that already has test coverage.
llvm-svn: 358165
Diffstat (limited to 'llvm/lib/Target')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 190d5708324..223d0923c7f 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -33234,6 +33234,15 @@ bool X86TargetLowering::SimplifyDemandedVectorEltsForTargetNode( return true; break; } + case X86ISD::VPPERM: { + // TODO - simplify other variable shuffle masks. + SDValue Mask = Op.getOperand(2); + APInt MaskUndef, MaskZero; + if (SimplifyDemandedVectorElts(Mask, DemandedElts, MaskUndef, MaskZero, TLO, + Depth + 1)) + return true; + break; + } case X86ISD::HADD: case X86ISD::HSUB: case X86ISD::FHADD: |
