diff options
Diffstat (limited to 'llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp index c68a5ca9134..8d896109e9f 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp @@ -2347,10 +2347,20 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) { 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: + case Intrinsic::x86_avx512_vpermilvar_pd_512: { if (Value *V = simplifyX86vpermilvar(*II, *Builder)) return replaceInstUsesWith(*II, V); + + unsigned VWidth = II->getType()->getVectorNumElements(); + APInt UndefElts(VWidth, 0); + APInt DemandedElts = APInt::getAllOnesValue(VWidth); + if (Value *V = SimplifyDemandedVectorElts(II, DemandedElts, UndefElts)) { + if (V != II) + return replaceInstUsesWith(*II, V); + return II; + } break; + } case Intrinsic::x86_avx2_permd: case Intrinsic::x86_avx2_permps: |
