[PATCH] D60512: [X86][AVX] Combine shuffles extracted from a common vector
Simon Pilgrim via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Apr 10 07:52:22 PDT 2019
RKSimon marked an inline comment as done.
RKSimon added inline comments.
================
Comment at: test/CodeGen/X86/avx512-shuffles/partial_permute.ll:4411
+; CHECK-NEXT: vmovapd {{.*#+}} zmm2 = <1,4,u,u,u,u,u,u>
+; CHECK-NEXT: vpermpd (%rdi), %zmm2, %zmm2
; CHECK-NEXT: vxorpd %xmm3, %xmm3, %xmm3
----------------
This is annoying - I'd be happier if the mask in zmm2 was at least reduced to a <1,4> xmm load (or broadcasted) but that's a common issue in a lot of the masks generated in this patch.
Repository:
rL LLVM
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D60512/new/
https://reviews.llvm.org/D60512
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