[PATCH] D32953: [X86][SSE] Improve combineLogicBlendIntoPBLENDV to use general masks.
Elena Demikhovsky via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon May 8 04:51:52 PDT 2017
delena added inline comments.
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Comment at: test/CodeGen/X86/pr32907.ll:26
; AVX2-NEXT: vpsrad $31, %xmm0, %xmm1
; AVX2-NEXT: vpshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
; AVX2-NEXT: vpxor %xmm2, %xmm2, %xmm2
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I assume that ComputeNumSignBits() does not recognize the ASHR sequence here, otherwise it would be able to generate VPBLEND, right?
Repository:
rL LLVM
https://reviews.llvm.org/D32953
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