[all-commits] [llvm/llvm-project] 7c50bc: [RISCV] Support -mcpu/mtune=native

[Wang Pengcheng via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7c50bcb441707f862cd7fcd07d81fbcdc29e98dc
      https://github.com/llvm/llvm-project/commit/7c50bcb441707f862cd7fcd07d81fbcdc29e98dc
  Author: wangpc <pc.wang at linux.alibaba.com>
  Date:   2022-11-07 (Mon, 07 Nov 2022)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/lib/Driver/ToolChains/Arch/RISCV.cpp
    M clang/lib/Driver/ToolChains/Arch/RISCV.h
    M clang/lib/Driver/ToolChains/Clang.cpp
    M clang/lib/Driver/ToolChains/CommonArgs.cpp
    M clang/test/Driver/riscv-cpus.c

  Log Message:
  -----------
  [RISCV] Support -mcpu/mtune=native

We may need hosted Clang/LLVM to compile and `getHostCpuName`
can be used for native detection.

Tests are added in riscv-cpus.c just like what AArch64/PPC
have done.

Reviewed By: kito-cheng

Differential Revision: https://reviews.llvm.org/D136930