Each replacement is recorded with a structure like this.
Referenced by copy_replacements_1(), dup_replacements(), find_equiv_reg(), find_replacement(), push_reload(), push_replacement(), regno_clobbered_p(), strict_memory_address_addr_space_p(), and subst_reloads().
Referenced by combine_reloads(), copy_replacements_1(), dup_replacements(), find_reloads(), find_replacement(), push_reload(), push_replacement(), remove_address_replacements(), subst_reloads(), and transfer_replacements().
Referenced by copy_replacements_1(), dup_replacements(), find_equiv_reg(), find_replacement(), move_replacements(), push_reload(), push_replacement(), remove_address_replacements(), and subst_reloads().