[all-commits] [llvm/llvm-project] 8b9b0f: [CodeGen][TLI] Allow targets to custom expand ato...

[Pierre van Houtryve via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8b9b0fdedf8cf3d6ea4ed65ed14250361d19428e
      https://github.com/llvm/llvm-project/commit/8b9b0fdedf8cf3d6ea4ed65ed14250361d19428e
  Author: Pierre van Houtryve <pierre.vanhoutryve at amd.com>
  Date:   2025-08-28 (Thu, 28 Aug 2025)

  Changed paths:
    M llvm/include/llvm/CodeGen/TargetLowering.h
    M llvm/lib/CodeGen/AtomicExpandPass.cpp
    M llvm/lib/Target/AMDGPU/SIISelLowering.cpp
    M llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp

  Log Message:
  -----------
  [CodeGen][TLI] Allow targets to custom expand  atomic load/stores (#154708)

Loads didn't have the `Expand` option in `AtomicExpandPass`. Stores had
`Expand` but it didn't defer to TLI and instead did an action directly.
Add a `CustomExpand` option and make it always map to the TLI hook for
all cases. The `Expand` option now refers to a generic expansion for all
targets.



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