def ObjC : Flag<["-"], "ObjC">, Flags<[DriverOption]>,
HelpText<"Treat source input files as Objective-C inputs">;
def O : Joined<["-"], "O">, Group<O_Group>, Flags<[CC1Option]>;
+def Ofast : Joined<["-"], "Ofast">, Group<O_Group>, Flags<[CC1Option]>;
def P : Flag<["-"], "P">, Flags<[CC1Option]>,
HelpText<"Disable linemarker output in -E mode">;
def Qn : Flag<["-"], "Qn">;
if (A->getOption().matches(options::OPT_O0))
return 0;
+ if (A->getOption().matches(options::OPT_Ofast))
+ return 3;
+
assert (A->getOption().matches(options::OPT_O));
StringRef S(A->getValue());
return 0;
}
+static bool isOptimizationLevelFast(ArgList &Args) {
+ if (Arg *A = Args.getLastArg(options::OPT_O_Group))
+ if (A->getOption().matches(options::OPT_Ofast))
+ return true;
+ return false;
+}
+
static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) {
for (arg_iterator I = Args.filtered_begin(OPT_W_Group),
E = Args.filtered_end(); I != E; ++I) {
Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
OPT_fuse_register_sized_bitfield_access);
- Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
+ Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing) ||
+ isOptimizationLevelFast(Args);
Opts.StructPathTBAA = Args.hasArg(OPT_struct_path_tbaa);
Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
// inlining enabled.
Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline);
- Opts.FastMath = Args.hasArg(OPT_ffast_math);
+ Opts.FastMath = Args.hasArg(OPT_ffast_math) ||
+ isOptimizationLevelFast(Args);
Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only);
Opts.RetainCommentsFromSystemHeaders =