On Wed, 19 Jul 2023 at 15:16, Budi via Gcc-help <gcc-help@xxxxxxxxxxx> wrote: > > Are all CPU superset features which accord to -m options > automatically put and set by gcc when gcc has -march=native (or Not all sets, no. Only the ones supported by your CPU on the machine you're compiling on. > specific else), if no, how a convenient way to put them automatically > ? > > as on GCC doc. > eg > -march=bdever1 > has supersets > FMA4, AVX, XOP, LWP, AES, PCLMUL, CX16, MMX, SSE, SSE2, SSE3, SSE4A, SSSE3, > SSE4.1, SSE4.2, ABM and 64-bit instruction set extensions > > the features which accord to e.g. -m option of > > -mmmx -msse -msse2 -msse3 -mssse3 -msse4.1 -msse4.2 > > how to automatically conveniently put ie. set them all ? What do you mean by "all"? To enable all the ones shown above, use -march=bdver1 To enable all instructions supported by the machine you're compiling on, use -march=native
