[all-commits] [llvm/llvm-project] bf3714: [clang][Driver] Handle SPARC -mcpu=native etc.

[rorth via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bf3714884ae4b4a0301bc6af78e8b4deff12558b
      https://github.com/llvm/llvm-project/commit/bf3714884ae4b4a0301bc6af78e8b4deff12558b
  Author: Rainer Orth <ro at gcc.gnu.org>
  Date:   2022-07-29 (Fri, 29 Jul 2022)

  Changed paths:
    M clang/lib/Driver/ToolChains/Arch/Sparc.cpp
    M clang/lib/Driver/ToolChains/Arch/Sparc.h
    M clang/lib/Driver/ToolChains/Clang.cpp
    M clang/lib/Driver/ToolChains/CommonArgs.cpp
    A clang/test/Driver/sparc-march.c
    A clang/test/Driver/sparc-mcpu.c
    A clang/test/Driver/sparc-mtune.c

  Log Message:
  -----------
  [clang][Driver] Handle SPARC -mcpu=native etc.

To make use of SPARC support in `getHostCPUName` as implemented by D130272
<https://reviews.llvm.org/D130272>, this patch uses it to handle
`-mcpu=native` and `-mtune=native`.  To match GCC, this patch rejects
`-march` instead of silently treating it as a no-op.

Tested on `sparcv9-sun-solaris2.11` and checking that those options are
passed on as `-target-cpu` resp. `-tune-cpu` as expected.

Differential Revision: https://reviews.llvm.org/D130273