[all-commits] [llvm/llvm-project] 6ab840: [RISCV][GISel] Port AddiPair optimization (#120463)

[Luke Quinn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6ab8401f53deddbd79f930ba2bec2f824c9567e3
      https://github.com/llvm/llvm-project/commit/6ab8401f53deddbd79f930ba2bec2f824c9567e3
  Author: Luke Quinn <quic_lquinn at quicinc.com>
  Date:   2024-12-20 (Fri, 20 Dec 2024)

  Changed paths:
    M llvm/lib/Target/RISCV/GISel/RISCVInstructionSelector.cpp
    M llvm/lib/Target/RISCV/RISCVInstrInfo.td
    A llvm/test/CodeGen/RISCV/GlobalISel/add-imm.ll

  Log Message:
  -----------
  [RISCV][GISel] Port AddiPair optimization (#120463)

Check if (add r, imm) can be optimized to (ADDI (ADDI r, imm0), imm1),
in which imm = imm0 + imml and both imm0 and imm1 are simm12. We make
imm0 as large as possible and imm1 as small as possible so that we might
be able to use c.addi for the small immediate.



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications