[PATCH] D129150: [DAG] Canonicalize non-inlane shuffle -> AND if all non-inlane referenced elements are known zero (WIP)

[Amaury SECHET via Phabricator via llvm-commits]

deadalnix added inline comments.


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Comment at: llvm/test/CodeGen/X86/vselect-constants.ll:304
 ; AVX-NEXT:    vpsraw $15, %xmm0, %xmm0
+; AVX-NEXT:    vmovdqa {{.*#+}} xmm1 = [1,0,0,0]
 ; AVX-NEXT:    vpblendvb %xmm0, {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1, %xmm0
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Do you know what's up with this guy? This seems objectively worse.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D129150/new/

https://reviews.llvm.org/D129150