[all-commits] [llvm/llvm-project] cf1c97: [AMDGPU] Do not attempt to fallback to default mut...

[Jeffrey Byrnes via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cf1c97b2d29c51d6c2e79454f6ec3d1f8f98e672
      https://github.com/llvm/llvm-project/commit/cf1c97b2d29c51d6c2e79454f6ec3d1f8f98e672
  Author: Jeffrey Byrnes <jeffrey.byrnes at amd.com>
  Date:   2024-02-27 (Tue, 27 Feb 2024)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUIGroupLP.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUIGroupLP.h
    M llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
    M llvm/lib/Target/AMDGPU/GCNSchedStrategy.cpp
    A llvm/test/CodeGen/AMDGPU/iglp.opt.reentry.ll

  Log Message:
  -----------
  [AMDGPU] Do not attempt to fallback to default mutations (#83208)

IGLP itself will be in SavedMutations via mutations added during
Scheduler creation, thus falling back results in reapplying IGLP.

In PostRA scheduling, if we have multiple regions with IGLP
instructions, then we may have infinite loop.

Disable the feature for now.



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