[all-commits] [llvm/llvm-project] 7eccaf: MIPS: Implement isAsCheapAsAMove for addiu (#133273)

[YunQiang Su via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7eccafc3c84606587a175c0a8c1ebea6e4fb21cd
      https://github.com/llvm/llvm-project/commit/7eccafc3c84606587a175c0a8c1ebea6e4fb21cd
  Author: YunQiang Su <syq at debian.org>
  Date:   2025-03-28 (Fri, 28 Mar 2025)

  Changed paths:
    M llvm/lib/Target/Mips/MipsInstrInfo.cpp
    M llvm/lib/Target/Mips/MipsInstrInfo.h

  Log Message:
  -----------
  MIPS: Implement isAsCheapAsAMove for addiu (#133273)

Set `addiu` as `isAsCheapAsAMove` only when the src register or imm is
zero only.

If other cases are set `isAsCheapAsAMove`, MachineLICM will reject to
hoist it.



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