https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100217
--- Comment #13 from Mark Wielaard <mark at gcc dot gnu.org> --- (In reply to Jakub Jelinek from comment #12) > For valgrind, the quick workaround would be -march=z13 when compiling the > s390x tests that have register long double variables. Yes, this works, if fpext and pfpo are build with -march=z13 they compile (and the tests pass under valgrind).