[PATCH] D108539: [X86][AVX] Attempt to fold a scaled index into a gather/scatter scale immediate (PR13310)
Pengfei Wang via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Sep 1 06:30:35 PDT 2021
pengfei added inline comments.
================
Comment at: llvm/test/CodeGen/X86/masked_gather_scatter.ll:774
; KNL_64-NEXT: kxnorw %k0, %k0, %k1
-; KNL_64-NEXT: vgatherqps (%rax,%zmm0), %ymm1 {%k1}
+; KNL_64-NEXT: vxorps %xmm1, %xmm1, %xmm1
+; KNL_64-NEXT: vgatherqps (%rax,%zmm0,4), %ymm1 {%k1}
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Why do we need an extra xor now?
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D108539/new/
https://reviews.llvm.org/D108539
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