[all-commits] [llvm/llvm-project] 100d9b: Reapply "AtomicExpand: Allow incrementally legaliz...

[Matt Arsenault via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 100d9b89947bb1d42af20010bb594fa4c02542fc
      https://github.com/llvm/llvm-project/commit/100d9b89947bb1d42af20010bb594fa4c02542fc
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2024-09-06 (Fri, 06 Sep 2024)

  Changed paths:
    M llvm/lib/CodeGen/AtomicExpandPass.cpp
    M llvm/test/CodeGen/NVPTX/atomics-sm70.ll
    M llvm/test/CodeGen/NVPTX/atomics-sm90.ll
    M llvm/test/CodeGen/PowerPC/all-atomics.ll
    M llvm/test/CodeGen/X86/atomic6432.ll
    M llvm/test/CodeGen/X86/pr5145.ll

  Log Message:
  -----------
  Reapply "AtomicExpand: Allow incrementally legalizing atomicrmw" (#107307)

This reverts commit 63da545ccdd41d9eb2392a8d0e848a65eb24f5fa.

Use reverse iteration in the instruction loop to avoid sanitizer
errors. This also has the side effect of avoiding the AArch64
codegen quality regressions.

Closes #107309



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