https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86735
--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
On x86_64-apple-darwin17 without access to avx512, I see
% gfcp pr86735.f90 -Ofast -march=skylake
% ./a.out
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16
Program received signal SIGILL: Illegal instruction.
and
% gfcp pr86735.f90 -Ofast -march=haswell
% ./a.out
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16
Program received signal SIGILL: Illegal instruction.
but
% gfcp pr86735.f90 -Ofast -march=ivybridge
% ./a.out
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16
Is this the same bug or should I file a new one?
