9 Dec
2022
9 Dec
'22
11:50
No. -m32 vs -m64 steers whether it is a 32 vs 64bit binary -march=… only changes what instructions GCC is allowed to use. If we do not build an actual 32-bit distro, we should allow GCC to use those instructions which are available on all 64-bit CPUs, also in 32-bit code. (Especially SSE2 which is a massive improvement)