https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64099
--- Comment #14 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- Created attachment 35320 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35320&action=edit Reduced version with most I/Os removed and generalized_hookes_law inlined manually. The subroutine perdida is fully inlined when this test is compiled with -Ofast.