[all-commits] [llvm/llvm-project] 8142cf: [AMDGPU] Visit all PHIs in each call to optimizeLi...

[Pierre van Houtryve via All-commits]

  Branch: refs/heads/users/pierre-vh/fix-late-cgp-invalid-phi
  Home:   https://github.com/llvm/llvm-project
  Commit: 8142cf37d0285b879f3560fa42f64dc0eca59327
      https://github.com/llvm/llvm-project/commit/8142cf37d0285b879f3560fa42f64dc0eca59327
  Author: pvanhout <pierre.vanhoutryve at amd.com>
  Date:   2025-07-08 (Tue, 08 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

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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