[all-commits] [llvm/llvm-project] 328cb9: [AVR] Remove earlyclobber from LDDRdPtrQ (#85277)

[Patryk Wychowaniec via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 328cb9b731cb61eaa853fa6cc3bd641dd1d71b98
      https://github.com/llvm/llvm-project/commit/328cb9b731cb61eaa853fa6cc3bd641dd1d71b98
  Author: Patryk Wychowaniec <pwychowaniec at pm.me>
  Date:   2024-03-15 (Fri, 15 Mar 2024)

  Changed paths:
    M llvm/lib/Target/AVR/AVRInstrInfo.td
    A llvm/test/CodeGen/AVR/bug-81911.ll

  Log Message:
  -----------
  [AVR] Remove earlyclobber from LDDRdPtrQ (#85277)

LDDRdPtrQ was marked as `earlyclobber`, which doesn't play well with
GreedyRA (which can generate this instruction through `loadRegFromStackSlot()`).

This seems to be the same case as:

https://github.com/llvm/llvm-project/blob/a99b912c9b74f6ef91786b4dfbc25160c27d3b41/llvm/lib/Target/AVR/AVRInstrInfo.td#L1421

Closes https://github.com/llvm/llvm-project/issues/81911.



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