On Sun, Feb 12, 2017 at 7:24 AM, Liu Hao <lh_mouse@xxxxxxx> wrote: > Hello, > Do we have a complete list of CPU architecture-specific macros (e.g. > __SSE__, __FMA__ on x86)? The doc > (https://gcc.gnu.org/onlinedocs/cpp/System-specific-Predefined-Macros.html) > doesn't seem to mention it. Thanks. For x86 machines, you often want to use 'gcc -march=native -dM -E </dev/null | sort' (or similar). The '-march=native' is important to get most of the defines for the native machine. I can only say "most of the defines" because I know some of them are omitted, like __MOVBE__, even when the processor supports it. To see __MOVBE__ in the list, yo have to check /proc/cpuinfo and then add -mmovbe if the cpu feature flag is set. Jeff
