https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77359
--- Comment #20 from David Edelsohn <dje at gcc dot gnu.org> --- If STACK_DYNAMIC_OFFSET has to be increased to 16, it has to be increased. info->parm_size probably was adjusted for VMX parameters. Note that GCC has gone through contortions with STACK_BOUNDARY, PREFERRED_STACK_BOUNDARY and PARM_BOUNDARY as it has evolved.