[all-commits] [llvm/llvm-project] e296ce: [RISCV][MC] MC layer support for the experimental ...

[Brendan Sweeney via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e296cedcd686e24fee75756185669f1bb3b47fdd
      https://github.com/llvm/llvm-project/commit/e296cedcd686e24fee75756185669f1bb3b47fdd
  Author: Brendan Sweeney <brs at eecs.berkeley.edu>
  Date:   2024-02-01 (Thu, 01 Feb 2024)

  Changed paths:
    M clang/test/Preprocessor/riscv-target-features.c
    M llvm/docs/RISCVUsage.rst
    M llvm/lib/Support/RISCVISAInfo.cpp
    M llvm/lib/Target/RISCV/RISCVFeatures.td
    M llvm/lib/Target/RISCV/RISCVInstrInfo.td
    A llvm/lib/Target/RISCV/RISCVInstrInfoZalasr.td
    M llvm/test/CodeGen/RISCV/attributes.ll
    M llvm/test/MC/RISCV/attribute-arch.s
    A llvm/test/MC/RISCV/rv32zalasr-invalid.s
    A llvm/test/MC/RISCV/rv32zalasr-valid.s
    A llvm/test/MC/RISCV/rv64zalasr-invalid.s
    A llvm/test/MC/RISCV/rv64zalasr-valid.s
    M llvm/unittests/Support/RISCVISAInfoTest.cpp

  Log Message:
  -----------
  [RISCV][MC] MC layer support for the experimental zalasr extension (#79911)

This PR implements experimental support for the RISC-V Atomic
Load-Acquire and Store-Release Extension (Zalasr). It has been approved
to be pursued as a fast track extension
(https://lists.riscv.org/g/tech-unprivileged/topic/arc_architecture_review/101951698),
but has not yet been approved by ARC or ratified. See
https://github.com/mehnadnerd/riscv-zalasr for draft spec.

---------

Co-authored-by: brs <turtwig at utexas.edu>
Co-authored-by: Philip Reames <preames at rivosinc.com>