[all-commits] [llvm/llvm-project] 426706: [AMDGPU] Invalidate uniformity info after intrinsi...

[Yaxun (Sam) Liu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 426706131e7300fe67f4dac5ccc744548605f394
      https://github.com/llvm/llvm-project/commit/426706131e7300fe67f4dac5ccc744548605f394
  Author: Yaxun (Sam) Liu <yaxun.liu at amd.com>
  Date:   2026-09-10 (Thu, 10 Sep 2026)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUUniformIntrinsicCombine.cpp
    A llvm/test/CodeGen/AMDGPU/amdgpu-uniform-intrinsic-combine-analysis-invalidation.ll

  Log Message:
  -----------
  [AMDGPU] Invalidate uniformity info after intrinsic combine (#222357)

The uniform intrinsic combine pass changed IR while preserving
uniformity information. Its result keeps references to cycle
information. Those references could be invalidated and later accessed
by another pass.

Invalidate uniformity information after a change. Before erasing an
instruction, remove it from the analysis state used by the pass. Also
report each erasure as a change so invalidation always runs.



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