[all-commits] [llvm/llvm-project] d87191: [clang][Driver] Support -fms-volatile as equivalen...

[Eli Friedman via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d87191942dc4701fafd7e87f02305711a4fd22f2
      https://github.com/llvm/llvm-project/commit/d87191942dc4701fafd7e87f02305711a4fd22f2
  Author: Eli Friedman <efriedma at quicinc.com>
  Date:   2023-12-13 (Wed, 13 Dec 2023)

  Changed paths:
    M clang/include/clang/Driver/Options.td
    M clang/lib/Driver/ToolChains/Clang.cpp
    M clang/test/Driver/cl-options.c
    M clang/test/Driver/clang_f_opts.c

  Log Message:
  -----------
  [clang][Driver] Support -fms-volatile as equivalent to /volatile:ms (#74790)

The flag -fms-volatile has existed as a -cc1 flag for a while. It also
technically existed as a driver flag, but didn't do anything because it
wasn't wired up to anything in the driver.

This patch adds -fno-ms-volatile, and makes both -fms-volatile and
-fno-ms-volatile work the same way as the cl-mode flags. The defaults
are unchanged (default on for x86 in cl mode, default off otherwise).