[all-commits] [llvm/llvm-project] a21df7: [X86] AMD Zen 3: XCHG is a zero-cycle instruction

[Roman Lebedev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a21df76db6c41dc87d027e9eb34695d7763f809e
      https://github.com/llvm/llvm-project/commit/a21df76db6c41dc87d027e9eb34695d7763f809e
  Author: Roman Lebedev <lebedev.ri at gmail.com>
  Date:   2021-05-09 (Sun, 09 May 2021)

  Changed paths:
    M llvm/lib/Target/X86/X86ScheduleZnver3.td
    M llvm/test/tools/llvm-mca/X86/Znver3/reg-move-elimination-gpr.s
    M llvm/test/tools/llvm-mca/X86/Znver3/resources-x86_64.s

  Log Message:
  -----------
  [X86] AMD Zen 3: XCHG is a zero-cycle instruction

As measured by exegesis and confirmed by reference docs.


  Commit: 675daef58b5e7e9fddbb5878bb88399b1c634949
      https://github.com/llvm/llvm-project/commit/675daef58b5e7e9fddbb5878bb88399b1c634949
  Author: Roman Lebedev <lebedev.ri at gmail.com>
  Date:   2021-05-09 (Sun, 09 May 2021)

  Changed paths:
    M llvm/lib/Target/X86/X86ScheduleZnver3.td

  Log Message:
  -----------
  [NFC][X86] Znver3: drop obsolete fixme


Compare: https://github.com/llvm/llvm-project/compare/ad5f3f525828...675daef58b5e