* config/s390/s390.c (s390_dump_pool): Remove return value.
	Use gen_pool_align, gen_pool_section_start/end instead of
	gen_pool_start/end_31/64.
	* config/s390/s390.md (UNSPECV_POOL_START, UNSPECV_POOL_END): Remove.
	(UNSPECV_POOL_SECTION, UNSPECV_POOL_ALIGN): New constants.
	("pool_start_31", "pool_end_31"): Remove.
	("pool_start_64", "pool_end_64"): Likewise.
	("pool_align", "pool_section_start", "pool_section_end": New insns.

	* config/s390/s390.c (s390_cannot_copy_insn_p): New function.
	(TARGET_CANNOT_COPY_INSN_P): Define.
	(s390_cannot_force_const_mem): Handle UNSPEC_INSN.
	(struct constant_pool): New member 'execute'.
	(s390_add_execute, s390_find_execute): New functions.
	(s390_execute_label, s390_execute_target): Likewise.
	(s390_dump_pool): Output in-pool execute target templates.
	(s390_dump_execute): New function.
	(s390_alloc_pool, s390_free_pool): Handle execute templates.
	(s390_mainpool_start, s390_mainpool_finish): Likewise.
	(s390_chunkify_start, s390_chunkify_finish): Likewise.
	* config/s390/s390.md (UNSPEC_INSN, UNSPEC_EXECUTE): New constants.
	("*execute"): New insn pattern.
	("movmem_short", "*movmem_short"): Use splitters to generate
	explicit execute pattern, remove embedded execute.
	("clrmem_short", "*clrmem_short"): Likewise.
	("cmpmem_short", "*cmpmem_short"): Likewise.

From-SVN: r88555