Thomas Koenig via Fortran <fortran@gcc.gnu.org> writes: > Hi Bernhard, > >> If you think that we want to add support for that attribute, i can >> submit a proper patch. Just let me know please. > > I think this attribute makes sense, especially if people want to > compile once and then port to different architectures. > > So, yes please submit a patch, if you would be so kind :-) > > Best regards > > Thomas
I'll make a list of others I think would be useful for consideration. I should probably have looked at what similar facilities proprietary compilers provide. I should say the intent of optimization-related attributes would be to encourage adding them to known performance-sensitive kernels, and potentially avoid having to write C. However, I doubt I can persuade the people who are convinced of the great superiority of ifort, and the desirability of always adding -axCORE-AVX512, without measuring or understanding GCC options. I think an equivalent of "#pragma GCC optimize" could be useful too. I don't have a specific case in mind, but an example might be where you need localized standard-conforming arithmetic, but other parts of the program benefit from -ffast-math.
