[Bug c/126552] const-qualified local register variable used as an asm operand is silently discarded

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D126552

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That is a user error.  For C++ the language requires such handling of const
variables initialized with constant expressions, for C allows it.  So, if y=
ou
don't want that behavior, either drop the const keyword in those cases, or =
for
GCC 16+ use the hard register constraints.=