Clarify driver/frontend -fms-compatibility help text

Better describe the flag that enables drop-in MSVC compatibility, including
ability to parse MS standard headers. This is intended to distinguish it from
-fms-extensions, the more established and 'gentler' flag also supported by GCC.

The new wording matches up with the internal description introduced in r198936.
Still room for improvement (e.g. C++ is part of the product name, yet the flag
also applies to C) but it's a step forward from "Microsoft mode".

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199247 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/clang/Driver/Options.td b/include/clang/Driver/Options.td
index 948b4487ab9fcd4b38b4693a8386aa137223030f..1c77df5d843c6937aacdb4022f9fd3b1daae32d8 100644 (file)
--- a/include/clang/Driver/Options.td
+++ b/include/clang/Driver/Options.td
@@ -575,9 +575,9 @@ def fmessage_length_EQ : Joined<["-"], "fmessage-length=">, Group<f_Group>;
 def fms_extensions : Flag<["-"], "fms-extensions">, Group<f_Group>, Flags<[CC1Option]>,
   HelpText<"Accept some non-standard constructs supported by the Microsoft compiler">;
 def fms_compatibility : Flag<["-"], "fms-compatibility">, Group<f_Group>, Flags<[CC1Option]>,
-  HelpText<"Enable Microsoft compatibility mode">;
+  HelpText<"Enable full Microsoft Visual C++ compatibility">;
 def fmsc_version : Joined<["-"], "fmsc-version=">, Group<f_Group>, Flags<[CC1Option, CoreOption]>,
-  HelpText<"Version of the Microsoft C/C++ compiler to report in _MSC_VER (0 = don't define it (default))">;
+  HelpText<"Microsoft compiler version number to report in _MSC_VER (0 = don't define it (default))">;
 def fdelayed_template_parsing : Flag<["-"], "fdelayed-template-parsing">, Group<f_Group>,
   HelpText<"Parse templated function definitions at the end of the "
            "translation unit">,  Flags<[CC1Option]>;