[all-commits] [llvm/llvm-project] 2012b2: [AMDGPU][GlobalISel] Disable fixed-point iteration...

[Jay Foad via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2012b25420160c3d4e595b29910afffa6c5f3fc2
      https://github.com/llvm/llvm-project/commit/2012b25420160c3d4e595b29910afffa6c5f3fc2
  Author: Jay Foad <jay.foad at amd.com>
  Date:   2024-08-22 (Thu, 22 Aug 2024)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUPostLegalizerCombiner.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUPreLegalizerCombiner.cpp
    M llvm/lib/Target/AMDGPU/AMDGPURegBankCombiner.cpp
    M llvm/test/CodeGen/AMDGPU/GlobalISel/postlegalizercombiner-and.mir

  Log Message:
  -----------
  [AMDGPU][GlobalISel] Disable fixed-point iteration in all Combiners (#105517)

Disable fixed-point iteration in all AMDGPU Combiners after #102163.

This saves around 2% compile time in ad hoc testing on some large
graphics shaders. I did not notice any regressions in the generated
code, just a bunch of harmless differences in instruction selection and
register allocation.



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications