[all-commits] [llvm/llvm-project] 6aea63: AMDGPU: Fix creating illegally typed readfirstlane...

[Matt Arsenault via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6aea6308d125c15b05bf10766eb831f32140968a
      https://github.com/llvm/llvm-project/commit/6aea6308d125c15b05bf10766eb831f32140968a
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2025-02-24 (Mon, 24 Feb 2025)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUAtomicOptimizer.cpp
    A llvm/test/CodeGen/AMDGPU/atomic-optimizer-promote-i8.ll
    M llvm/test/CodeGen/AMDGPU/atomic_optimizations_global_pointer.ll

  Log Message:
  -----------
  AMDGPU: Fix creating illegally typed readfirstlane in atomic optimizer (#128388)

We need to promote 8/16-bit cases to 32-bit. Unfortunately we are
missing demanded bits optimizations on readfirstlane, so we end up
emitting
an and instruction on the input. I'm also surprised this pass isn't
handling
half or bfloat yet.



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