Make -fno-math-builtin a cc1 option

[mssimpso]

Summary

This patch makes -fno-math-builtin a frontend only option instead of a driver option. The appropriate test case was committed in r186899 when the flag was introduced.

Contributed-by: Frank Herrmann <[e-mail]>

[mcrosier]

LGTM. Thanks, Frank.

[mssimpso]

Committed in r260044.

include/clang/Driver/CC1Options.td

 def compress_debug_sections : Flag<["-"], "compress-debug-sections">,
     HelpText<"Compress DWARF debug sections using zlib">;
 def msave_temp_labels : Flag<["-"], "msave-temp-labels">,
   HelpText<"Save temporary labels in the symbol table. "
            "Note this may change .s semantics and shouldn't generally be used "
            "on compiler-generated code.">;
 def mrelocation_model : Separate<["-"], "mrelocation-model">,
   HelpText<"The relocation model to use">;
+def fno_math_builtin : Flag<["-"], "fno-math-builtin">,
+  HelpText<"Disable implicit builtin knowledge of math functions">;
 }
 
 def disable_llvm_optzns : Flag<["-"], "disable-llvm-optzns">,
   HelpText<"Don't run LLVM optimization passes">;
 def disable_llvm_verifier : Flag<["-"], "disable-llvm-verifier">,
   HelpText<"Don't run the LLVM IR verifier pass">;
 def disable_llvm_passes : Flag<["-"], "disable-llvm-passes">,
   HelpText<"Use together with -emit-llvm to get pristine LLVM IR from the "

include/clang/Driver/Options.td

def fno_assume_sane_operator_new : Flag<["-"], "fno-assume-sane-operator-new">, Group<f_Group>,
   HelpText<"Don't assume that C++'s global operator new can't alias any pointer">,
   Flags<[CC1Option]>;
 def fno_blocks : Flag<["-"], "fno-blocks">, Group<f_Group>;
 def fno_borland_extensions : Flag<["-"], "fno-borland-extensions">, Group<f_Group>;
 def fno_builtin : Flag<["-"], "fno-builtin">, Group<f_Group>, Flags<[CC1Option]>,
   HelpText<"Disable implicit builtin knowledge of functions">;
 def fno_builtin_ : Joined<["-"], "fno-builtin-">, Group<f_Group>, Flags<[CC1Option]>,
   HelpText<"Disable implicit builtin knowledge of a specific function">;
-def fno_math_builtin : Flag<["-"], "fno-math-builtin">, Group<f_Group>, Flags<[CC1Option]>,
-  HelpText<"Disable implicit builtin knowledge of math functions">;
 def fno_caret_diagnostics : Flag<["-"], "fno-caret-diagnostics">, Group<f_Group>,
  Flags<[CC1Option]>;
 def fno_color_diagnostics : Flag<["-"], "fno-color-diagnostics">, Group<f_Group>,
   Flags<[CoreOption, CC1Option]>;
 def fno_diagnostics_color : Flag<["-"], "fno-diagnostics-color">, Group<f_Group>,
   Flags<[CoreOption, DriverOption]>;
 def fno_common : Flag<["-"], "fno-common">, Group<f_Group>, Flags<[CC1Option]>,
     HelpText<"Compile common globals like normal definitions">;