* config/s390/s390.md (reload_base, ltorg): Remove.
	* s390.c (s390_stop_dump_lit_p, s390_dump_literal_pool,
	s390_asm_output_pool_prologue, s390_pool_start_insn): Remove.
	* s390-protos.h (s390_stop_dump_lit_p, s390_dump_literal_pool,
	s390_asm_output_pool_prologue): Likewise.
	* s390.h (s390_pool_start_insn): Likewise.

	* s390.c (s390_output_symbolic_const): Remove support for
	old-style pool chunks.
	(s390_function_epilogue): Likewise.
	(s390_output_constant_pool): Likewise.  Also, fix incorrect
	alignment for 64-bit literal pools.
	(print_operand_address): Remove 'y' and 'Y' format flags.
	* s390.h (ASM_OUTPUT_POOL_PROLOGUE): Remove support for
	old-style pool chunks.
	(ASM_OUTPUT_SPECIAL_POOL_ENTRY): Likewise.
	(ASM_OUTPUT_POOL_EPILOGUE): Remove.
	(S390_CHUNK_MAX, S390_CHUNK_OV, S390_POOL_MAX): Remove.

	* s390.c (consttable_operand): New function.
	* s390-protos.h (consttable_operand): Declare it.
	* s390.h (PREDICATE_CODES): Add consttable_operand.
	* s390.md (consttable_qi, consttable_hi, consttable_si, consttable_di,
	consttable_sf, consttable_df, pool_start_31, pool_end_31,
	pool_start_64, pool_end_64, reload_base, reload_base2): New insns.
	* s390.c (struct constant, struct constant_pool): New data types.
	(constant_modes, gen_consttable): New variables.
	(s390_start_pool, s390_end_pool, s390_add_pool,
	s390_dump_pool, s390_free_pool): New functions.
	(s390_chunkify_pool): Completely reimplement literal pool
	overflow handling.

	* s390.c (s390_pool_overflow): New variable.
	* s390.h (s390_pool_overflow): Declare it.
	* s390.md (cjump, icjump): Use it to adapt length for out-of-range
	jumps in literal pool overflow situations.

	* s390.c (s390_decompose_address): Accept new-style pool chunk offsets.
	(s390_frame_info): Account for possible use of RETURN_REGNUM
	by new literal pool overflow code.
	(s390_emit_prologue): Likewise.

From-SVN: r54500