Dear all, I use the GCC 4.8 from Macports and I'd like to optimize my code by using the flag -march=native. For that I have to use the assembler of clang, because the GNU assembler is too old and cannot use the AVX extensions. By setting the flags "-Wa,-q" the GCC should work. But with optimizing loops there are some problems:
/var/folders/zz/q_423dms0vqcgp5khshwwrwh000142/T//cchZfZOX.s:232771:2: error: ambiguous instructions require an explicit suffix (could be 'fisttps', or 'fisttpl') fisttp 62(%rsp) I think the GCC generates as code, which is too imprecise for the clang compiler. Is there a way to get more precise code to use the -march=native flag? Best, Vera
