http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54231
--- Comment #6 from Thiago Macieira <thiago at kde dot org> 2012-08-11 23:23:39 UTC --- (In reply to comment #5) > "Fixing" this in the compiler isn't straight-forward. The _mm_stream functions > are just wrappers around builtin functions. It may work correctly if you put > the bzero functions in two separate files or call the builtins directly (a > variant of __builtin_ia32_movntdq in this case), but the way your BZERO is > defined, I don't think it will ever work. They *are* in separate files already. Calling the builtin directly instead of the intrinsic wrapper might work, but I did not test it because it's not acceptable, as the code would be GCC-specific. > Have you considered using ifunc? IFUNC is also irrelevant: in order to use it, I need to have two separate source files which are compiled with different compiler settings, so we end up where we started: the bzero_sse2() function will have AVX code.
