[all-commits] [llvm/llvm-project] 6a371c: [RISCV] Support .option {no}exact (#122483)

[Sam Elliott via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6a371c7744c276c872fec4947f1642789e5b24ec
      https://github.com/llvm/llvm-project/commit/6a371c7744c276c872fec4947f1642789e5b24ec
  Author: Sam Elliott <quic_aelliott at quicinc.com>
  Date:   2025-03-26 (Wed, 26 Mar 2025)

  Changed paths:
    M llvm/docs/ReleaseNotes.md
    M llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
    M llvm/lib/Target/RISCV/MCTargetDesc/RISCVAsmBackend.cpp
    M llvm/lib/Target/RISCV/MCTargetDesc/RISCVAsmBackend.h
    M llvm/lib/Target/RISCV/MCTargetDesc/RISCVELFStreamer.cpp
    M llvm/lib/Target/RISCV/MCTargetDesc/RISCVELFStreamer.h
    M llvm/lib/Target/RISCV/MCTargetDesc/RISCVTargetStreamer.cpp
    M llvm/lib/Target/RISCV/MCTargetDesc/RISCVTargetStreamer.h
    M llvm/lib/Target/RISCV/RISCVFeatures.td
    M llvm/test/CodeGen/RISCV/features-info.ll
    A llvm/test/CodeGen/RISCV/option-exact-inlineasm.ll
    A llvm/test/MC/RISCV/option-exact.s
    M llvm/test/MC/RISCV/option-invalid.s

  Log Message:
  -----------
  [RISCV] Support .option {no}exact (#122483)

This implements [the `.option exact` and `.option noexact`
proposal](https://github.com/riscv-non-isa/riscv-asm-manual/pull/122)
for RISC-V.

`.option exact` turns off:
- Compression
- Branch Relaxation
- Linker Relaxation

`.option noexact` turns these back on, and is also the default, matching
the current behaviour.



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