[all-commits] [llvm/llvm-project] c99690: [X86] Adjust vector shift costs to match SoG (Issu...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c99690462ef7d510134ee3d58cdae87b26c23cb7
      https://github.com/llvm/llvm-project/commit/c99690462ef7d510134ee3d58cdae87b26c23cb7
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2022-05-29 (Sun, 29 May 2022)

  Changed paths:
    M llvm/lib/Target/X86/X86ScheduleZnver1.td
    M llvm/lib/Target/X86/X86ScheduleZnver2.td
    M llvm/test/tools/llvm-mca/X86/Znver1/resources-avx1.s
    M llvm/test/tools/llvm-mca/X86/Znver1/resources-avx2.s
    M llvm/test/tools/llvm-mca/X86/Znver1/resources-mmx.s
    M llvm/test/tools/llvm-mca/X86/Znver1/resources-sse2.s
    M llvm/test/tools/llvm-mca/X86/Znver2/resources-avx1.s
    M llvm/test/tools/llvm-mca/X86/Znver2/resources-avx2.s
    M llvm/test/tools/llvm-mca/X86/Znver2/resources-mmx.s
    M llvm/test/tools/llvm-mca/X86/Znver2/resources-sse2.s
    M llvm/test/tools/llvm-mca/X86/Znver3/reg-move-elimination-mmx.s
    M llvm/test/tools/llvm-mca/X86/Znver3/reg-move-elimination-x87.s

  Log Message:
  -----------
  [X86] Adjust vector shift costs to match SoG (Issue #54889)

znver1/2 models were incorrectly modelling the fpupipe (should be pipe2 for shift-by-scalar-amount and pipe1 for shift-by-element-amount) and znver1 ymm variants also require double pumping.

Now matches AMD SoG, Agner and instlatx64 numbers.

Thanks to @fabian-r for the report