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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-01-17 11:35:03 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-01-17 11:35:03 +0000 |
| commit | d4eb800b03e0353ce880092d2f1775d5aa37bdd8 (patch) | |
| tree | 9ffb302a366eb6e7fc147dbcd2a7455636863d23 /llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp | |
| parent | 92b375311551dde9500ce73f5a8e77d389aa0cab (diff) | |
| download | bcm5719-llvm-d4eb800b03e0353ce880092d2f1775d5aa37bdd8.tar.gz bcm5719-llvm-d4eb800b03e0353ce880092d2f1775d5aa37bdd8.zip | |
[InstCombine][X86][AVX] Add DemandedElts support for VPERMILPD/VPERMILPS instructions
Simplify a vpermilvar shuffle mask based on the elements of the mask that are actually demanded.
llvm-svn: 292209
Diffstat (limited to 'llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp b/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp index 95100d074b4..bf88a7517c1 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp @@ -1472,9 +1472,17 @@ Value *InstCombiner::SimplifyDemandedVectorElts(Value *V, APInt DemandedElts, break; } + // PSHUFB case Intrinsic::x86_ssse3_pshuf_b_128: case Intrinsic::x86_avx2_pshuf_b: - case Intrinsic::x86_avx512_pshuf_b_512: { + case Intrinsic::x86_avx512_pshuf_b_512: + // PERMILVAR + case Intrinsic::x86_avx_vpermilvar_ps: + case Intrinsic::x86_avx_vpermilvar_ps_256: + case Intrinsic::x86_avx512_vpermilvar_ps_512: + case Intrinsic::x86_avx_vpermilvar_pd: + case Intrinsic::x86_avx_vpermilvar_pd_256: + case Intrinsic::x86_avx512_vpermilvar_pd_512: { Value *Op1 = II->getArgOperand(1); TmpV = SimplifyDemandedVectorElts(Op1, DemandedElts, UndefElts, Depth + 1); |
