[all-commits] [llvm/llvm-project] 852497: [X86] AMD Zen 3: double the LoopMicroOpBufferSize

[Roman Lebedev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 852497711dae35f978a7a3f2e1889fc8fe15fc3b
      https://github.com/llvm/llvm-project/commit/852497711dae35f978a7a3f2e1889fc8fe15fc3b
  Author: Roman Lebedev <lebedev.ri at gmail.com>
  Date:   2021-06-05 (Sat, 05 Jun 2021)

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

  Log Message:
  -----------
  [X86] AMD Zen 3: double the LoopMicroOpBufferSize

While the IndVars issue (PR50384) has been resolved,
and the compile performance improved, a new blocker emerged,
the codegen machine instruction scheduling is also quadratic.
So we still can't really specify the right value here.

Filed PR50584.