[all-commits] [llvm/llvm-project] 99eca8: [Driver] Enable to use C++20 standalne by -fcxx-mo...

[Chuanqi Xu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 99eca8353808f63670c647aeae03e0ce66eb21e0
      https://github.com/llvm/llvm-project/commit/99eca8353808f63670c647aeae03e0ce66eb21e0
  Author: Chuanqi Xu <yedeng.yd at linux.alibaba.com>
  Date:   2022-05-30 (Mon, 30 May 2022)

  Changed paths:
    M clang/include/clang/Driver/Options.td
    M clang/lib/Driver/ToolChains/Clang.cpp
    M clang/test/Driver/modules.cpp
    A clang/test/Modules/cxx-modules.cppm

  Log Message:
  -----------
  [Driver] Enable to use C++20 standalne by -fcxx-modules

This patch allows user to use C++20 module by -fcxx-modules. Previously,
we could only use it under -std=c++20. Given that user could use C++20
coroutine standalonel by -fcoroutines-ts. It makes sense to offer an
option to use C++20 modules without enabling C++20.

Reviewed By: iains, MaskRay

Differential Revision: https://reviews.llvm.org/D120540