mn10300.c: Include cfgloop.h.

	* config/mn10300/mn10300.c: Include cfgloop.h.
	(DUMP): New macro.
	(mn10300_insert_setlb_lcc): New function.  Inserts a SETLB and a
	Lcc or a FLcc insn into the instruction stream.
	(mn10300_block_contains_call): New function.  Returns true if the
	given basic block contains a CALL insn.
	(mn10300_loop_contains_call_insn): New function.  Returns true if
	the given loop contains a CALL insn.
	(mn10300_scan_for_setlb_lcc): New function.  Finds opportunities
	to use the SETLB and Lcc or FLcc insns.
	(mn10300_reorg): Invoke mn10300_scan_for_setlb_lcc when optimizing.
	(TARGET_FLAGS): Add MASK_ALLOW_SETLB.
	* config/mn10300/mn10300.opt (msetlb): New option.  Used to
	disable the SETLB optimization.
	* config/mn10300/mn10300.h (TARGET_CPU_CPP_BUILTINS): Add
	__SETLB__ or __NO_SETLB__.
	* config/mn10300/mn10300.md (UNSPEC_SETLB): New constant.
	(movsf_internal): Handle MDR register.
	(cmpsi): Make visible.
	(setlb): New pattern.
	(Lcc): New pattern.
	(FLcc): New pattern.

From-SVN: r173362