https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126290
--- Comment #7 from Ammar Faizi <ammarfaizi2 at gnuweeb dot org> --- (In reply to Jakub Jelinek from comment #5) > Note, in GCC 16+ you can use hard register constraints: > https://gcc.gnu.org/onlinedocs/gcc-16.1.0/gcc/Hard-Register-Constraints.html That seems to be the most reliable option. Unfortunately, Clang has not supported it yet.
