[all-commits] [llvm/llvm-project] e4ebfb: [MCA] Adding an AMDGPUCustomBehaviour implementation.

[Patrick Holland via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e4ebfb5786a1fbd48c67c5e1fe7b295241fe7010
      https://github.com/llvm/llvm-project/commit/e4ebfb5786a1fbd48c67c5e1fe7b295241fe7010
  Author: Patrick Holland <patrickeholland at gmail.com>
  Date:   2021-08-24 (Tue, 24 Aug 2021)

  Changed paths:
    M llvm/lib/Target/AMDGPU/MCA/AMDGPUCustomBehaviour.cpp
    M llvm/lib/Target/AMDGPU/MCA/AMDGPUCustomBehaviour.h
    M llvm/lib/Target/AMDGPU/SISchedule.td
    M llvm/test/tools/llvm-mca/AMDGPU/gfx10-double.s
    A llvm/test/tools/llvm-mca/AMDGPU/gfx9-retireooo.s

  Log Message:
  -----------
  [MCA] Adding an AMDGPUCustomBehaviour implementation.

This implementation allows mca to model the desired behaviour of the s_waitcnt
instruction. This patch also adds the RetireOOO flag to the AMDGPU instructions
within the scheduling model. This flag is only used by mca and allows
instructions to finish out-of-order which helps mca's simulations more closely
model the actual device.

Differential Revision: https://reviews.llvm.org/D104730