s390.c (machine_function): New field has_landing_pad_p.

s390.c (machine_function): New field has_landing_pad_p.

2005-06-28  Andreas Krebbel  <krebbel1@de.ibm.com>

	* config/s390/s390.c (machine_function): New field has_landing_pad_p.
	(s390_set_has_landing_pad_p, s390_reg_clobbered_rtx,
	 s390_regs_ever_clobbered): New functions.
	(s390_return_addr_rtx): Use get_hard_reg_initial_value.
	(s390_register_info, s390_init_frame_layout, s390_update_frame_layout):
	Use s390_regs_ever_clobbered.
	(s390_emit_prologue): Don't use r14 as temp reg if its content is used
	for builtin_return_address.
	* config/s390/s390.md ("exception_receiver"): New expander.
	* config/s390/s390-protos.h (s390_set_has_landing_pad_p): Prototype
	added.

From-SVN: r101381