* sh.c (print_operand): lookup interrupt_handler attribute instead
of relying on static variable.
* (calc_live_regs): Likewise.
* (sh_pragma_insert_attributes): Create interrupt_handler
attribute if a pragma was specified
* (sh_valid_machine_decl_attribute): Don't set static flag.
* sh.h (PRAGMA_INSERT_ATTRIBUTES): New.

From-SVN: r24265