[all-commits] [llvm/llvm-project] 07c8f3: [X86] SkylakeServerModel - conversion instructions...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 07c8f3dd0f6b4890e48ac9c07eb9059478030b7a
      https://github.com/llvm/llvm-project/commit/07c8f3dd0f6b4890e48ac9c07eb9059478030b7a
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2022-11-12 (Sat, 12 Nov 2022)

  Changed paths:
    M llvm/lib/Target/X86/X86SchedSkylakeServer.td
    M llvm/test/tools/llvm-mca/X86/SkylakeServer/resources-avx1.s
    M llvm/test/tools/llvm-mca/X86/SkylakeServer/resources-avx512.s
    M llvm/test/tools/llvm-mca/X86/SkylakeServer/resources-avx512dq.s
    M llvm/test/tools/llvm-mca/X86/SkylakeServer/resources-avx512dqvl.s
    M llvm/test/tools/llvm-mca/X86/SkylakeServer/resources-avx512vl.s
    M llvm/test/tools/llvm-mca/X86/SkylakeServer/resources-sse1.s
    M llvm/test/tools/llvm-mca/X86/SkylakeServer/resources-sse2.s

  Log Message:
  -----------
  [X86] SkylakeServerModel - conversion instructions don't use Port015

Fixes a lot of throughput mismatches - the more complicated conversion instructions use SKXPort5+SKXPort01, not SKXPort5+SKXPort015 (SKXPort015 is mainly used for basic Logic + blend ops)

Fixing this should allow us to remove a lot of unnecessary scheduler overrides from SkylakeServerModel

Confirmed by both Agner + uops.info