[PATCH] D133239: [RISCV][MC] Add minimal support for Ztso extension

[Philip Reames via Phabricator via llvm-commits]

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This is a minimalist implementation which simply adds the extension (in the experimental namespace since its not ratified), and wires up the setting of the required ELF header flag.  Future changes will include codegen changes to exploit the stronger memory model.

This is intended to implement v0.1 of the proposed specification which can be found in Chapter 25 of https://github.com/riscv/riscv-isa-manual/releases/download/draft-20220723-10eea63/riscv-spec.pdf.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D133239

Files:
  llvm/lib/Target/RISCV/MCTargetDesc/RISCVELFStreamer.cpp
  llvm/lib/Target/RISCV/RISCV.td
  llvm/lib/Target/RISCV/RISCVSubtarget.h
  llvm/test/MC/RISCV/Ztso.s
  llvm/test/MC/RISCV/elf-flags.s

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