[all-commits] [llvm/llvm-project] ed87f0: [AMDGPU] Visit all PHIs in each call to optimizeLi...

[Pierre van Houtryve via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ed87f0afba24d56b509dfc21298b2700d886912b
      https://github.com/llvm/llvm-project/commit/ed87f0afba24d56b509dfc21298b2700d886912b
  Author: Pierre van Houtryve <pierre.vanhoutryve at amd.com>
  Date:   2025-07-10 (Thu, 10 Jul 2025)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPULateCodeGenPrepare.cpp
    A llvm/test/CodeGen/AMDGPU/amdgpu-late-codegenprepare-crash-splat.ll

  Log Message:
  -----------
  [AMDGPU] Visit all PHIs in each call to optimizeLiveType (#147522)

Make the Visited set a local variable, otherwise we can reject a PHI
(those that do not have a zeroinitializer constant) but mark it as
visited,
and the rest of the function thinks the PHI is ok when it isn't.
This is a bit crude but it's the only fix that consistently worked in my
testing.

Fixes SWDEV-541767



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