http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50724
--- Comment #33 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-10-18 09:41:50 UTC --- (In reply to comment #31) > I can't add an attribute to the system isnan from my user code, or can I? > I've > never been quite sure what Paolo was referring to, can someone clue me in? It > sounded like he was saying the builtins could be given an attribute to specify > -fno-finite-math-only which would only affect their specific usage? Maybe he > just meant I could apply different flags in different translation units of my > own code, in which case I've misunderstood. Basically, what's the "new > optimization attribute and pragma"? Read the frabjous manual: http://gcc.gnu.org/onlinedocs/gcc/Function-Specific-Option-Pragmas.html http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html#index-g_t_0040code_007boptimize_007d-function-attribute-2496 You shouldn't need to put code in separate translation units, you can specify different optimizations per function (though I haven't checked if that works for -fno-finite-math-only)
