[all-commits] [llvm/llvm-project] 4f1c8b: [RegAlloc] Fix use-after-free in `RegAllocBase::cl...

[Shilei Tian via All-commits]

  Branch: refs/heads/users/shiltian/fix-use-after-free-after-cleanup
  Home:   https://github.com/llvm/llvm-project
  Commit: 4f1c8bc26102c057ad383d4d7cc9c5067f8d63e7
      https://github.com/llvm/llvm-project/commit/4f1c8bc26102c057ad383d4d7cc9c5067f8d63e7
  Author: Shilei Tian <i at tianshilei.me>
  Date:   2025-07-30 (Wed, 30 Jul 2025)

  Changed paths:
    M llvm/lib/CodeGen/RegAllocBase.cpp
    A llvm/test/CodeGen/AMDGPU/use-after-free-after-cleanup-failed-vreg.ll

  Log Message:
  -----------
  [RegAlloc] Fix use-after-free in `RegAllocBase::cleanupFailedVReg`

Since #128400 already mentions it's not clear about the necessity of removing intervals from regunits, this PR avoids the issue by simply skipping that step.

Fixes SWDEV-527146.



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