[PATCH] [compiler-rt] Extend Mac OS versions to Yosemite

[Kuba Brecka]

Also, for the sake of not breaking the ">=" version checks with every OS X release, I think we should have something like:

    enum MacosVersion {
      MACOS_VERSION_UNINITIALIZED = 0,
      MACOS_VERSION_UNKNOWN,
      MACOS_VERSION_LEOPARD,
      MACOS_VERSION_SNOW_LEOPARD,
      MACOS_VERSION_LION,
      MACOS_VERSION_MOUNTAIN_LION,
      MACOS_VERSION_MAVERICKS,
      MACOS_VERSION_YOSEMITE,
      MACOS_VERSION_UNKNOWN_NEWER,
    };

    ...
    switch (version[0]) {
      case '9': return MACOS_VERSION_LEOPARD;
      case '1': {
        switch (version[1]) {
          case '0': return MACOS_VERSION_SNOW_LEOPARD;
          case '1': return MACOS_VERSION_LION;
          case '2': return MACOS_VERSION_MOUNTAIN_LION;
          case '3': return MACOS_VERSION_MAVERICKS;
          case '4': return MACOS_VERSION_YOSEMITE;
          case '5'...'9': return MACOS_VERSION_UNKNOWN_NEWER;
          default: return MACOS_VERSION_UNKNOWN;
        }
      }
      default: return MACOS_VERSION_UNKNOWN;
    }

http://reviews.llvm.org/D6119