[all-commits] [llvm/llvm-project] 9c9a4a: [LOH] Don't emit AdrpAddStr when register could be...

[Ellis Hoag via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9c9a4a284e95ea5e27617af7235e3ab049bae680
      https://github.com/llvm/llvm-project/commit/9c9a4a284e95ea5e27617af7235e3ab049bae680
  Author: Ellis Hoag <ellis.sparky.hoag at gmail.com>
  Date:   2025-06-11 (Wed, 11 Jun 2025)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64CollectLOH.cpp
    M llvm/test/CodeGen/AArch64/loh-adrp-add-ldr-clobber.mir

  Log Message:
  -----------
  [LOH] Don't emit AdrpAddStr when register could be clobbered (#142849)

https://github.com/llvm/llvm-project/commit/b783aa89795635cbe7b25b4143b562931fcec9f6
added a check to ensure an `AdrpAddLdr` LOH isn't created when there is
an instruction between the `add` and `ldr`


https://github.com/llvm/llvm-project/blob/50c5704dc000cc0af41a511aa44db03233edf0af/llvm/lib/Target/AArch64/AArch64CollectLOH.cpp#L419-L431

We need a similar check for `AdrpAddStr`. Although this technically
isn't implemented in LLD, it could be in the future.


https://github.com/llvm/llvm-project/blob/50c5704dc000cc0af41a511aa44db03233edf0af/lld/MachO/Arch/ARM64.cpp#L699-L702



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