To check the actual options used you can do:
gcc -march=x86-64 -Q --help=target
For example on my side:
gcc -march=x86-64 -Q --help=target | grep avx
List avx and avx2 as disabled. But if I use native instead of x86-64 they are marked as enabled.
To check the actual options used you can do:
gcc -march=x86-64 -Q --help=target
For example on my side:
gcc -march=x86-64 -Q --help=target | grep avx
List avx and avx2 as disabled. But if I use native instead of x86-64 they are marked as enabled.