[PATCH] D123515: [RISCV] Support '.option arch' directive

[luxufan via Phabricator via llvm-commits]

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The proposal of '.option arch' directive is https://github.com/riscv-non-isa/riscv-asm-manual/pull/67

Note: For '.option arch, +/-' directive, version number is not yet supported.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D123515

Files:
  llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
  llvm/lib/Target/RISCV/MCTargetDesc/RISCVTargetStreamer.cpp
  llvm/lib/Target/RISCV/MCTargetDesc/RISCVTargetStreamer.h
  llvm/test/MC/RISCV/option-arch.s
  llvm/test/MC/RISCV/option-invalid.s

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