[all-commits] [llvm/llvm-project] 3dcf62: [X86] HSW/BDW - vector splat shifts don't use Port...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3dcf62b5eea950153be5f2ddb4b79b3c6362148b
      https://github.com/llvm/llvm-project/commit/3dcf62b5eea950153be5f2ddb4b79b3c6362148b
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2024-03-25 (Mon, 25 Mar 2024)

  Changed paths:
    M llvm/lib/Target/X86/X86SchedBroadwell.td
    M llvm/lib/Target/X86/X86SchedHaswell.td
    M llvm/test/tools/llvm-mca/X86/Broadwell/resources-avx1.s
    M llvm/test/tools/llvm-mca/X86/Broadwell/resources-sse2.s
    M llvm/test/tools/llvm-mca/X86/Haswell/resources-avx1.s
    M llvm/test/tools/llvm-mca/X86/Haswell/resources-sse2.s

  Log Message:
  -----------
  [X86] HSW/BDW - vector splat shifts don't use Port5 when loading the shift amount

Noticed while trying to compare splat vs per-element shift perf stats for #39424

Confirmed with uops.info



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