2004-07-19  Andreas Krebbel  <krebbel1@de.ibm.com>

	* config/s390/s390-protos.h (s390_return_address_offset): Prototype
	added.
	* config/s390/s390.c (regclass_map initializer): Register 35 added to
	ADDR_REGS.
	(load_multiple_operation, store_multiple_operation): Removed
	pointless sanity check.
	(s390_decompose_address): Added check for return_address_pointer_rtx.
	(s390_return_addr_rtx): Use return_address_pointer_rtx for count == 0.
	(s390_return_address_offset): New function.
	* config/s390/s390.h (FIRST_PSEUDO_REGISTER): Increased to 36.
	(FRAME_REGNO_P): Added check for register 35.
	(FIXED_REGISTERS, CALL_USED_REGISTERS, CALL_REALLY_USED_REGISTERS,
	REG_ALLOC_ORDER): Appended entry for register 35.
	(REG_CLASS_CONTENTS): Adjusted class masks for register 35.
	(EH_RETURN_HANDLER_RTX): Use return_address_pointer_rtx.
	(RETURN_ADDRESS_POINTER_REGNUM): New macro.
	(ELIMINABLE_REGS, INITIAL_ELIMINATION_OFFSET): Return address pointer
	is eliminable using stack pointer or hard frame pointer.
	(REGISTER_NAMES): Added name for register 35.
	* config/s390/s390.md ("load_multiple", "store_multiple"): Removed
	pointless sanity check.

From-SVN: r84918