[PATCH] D64760: [x86] use more phadd for reductions
Sanjay Patel via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Jul 15 16:51:35 PDT 2019
spatel marked an inline comment as done.
spatel added inline comments.
================
Comment at: llvm/test/CodeGen/X86/vector-reduce-add.ll:680
; AVX1-FAST-NEXT: vphaddw %xmm0, %xmm0, %xmm0
; AVX1-FAST-NEXT: vmovd %xmm0, %eax
; AVX1-FAST-NEXT: # kill: def $ax killed $ax killed $eax
----------------
RKSimon wrote:
> ideally we'd have these cases combine as ll
'll' - do you mean alter/override the ExpandReductions pass in IR?
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https://reviews.llvm.org/D64760/new/
https://reviews.llvm.org/D64760
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