m68hc11.md ("tstqi_1"): Try to use ldab instead of tst.

m68hc11.md ("tstqi_1"): Try to use ldab instead of tst.

	* config/m68hc11/m68hc11.md ("tstqi_1"): Try to use ldab instead of tst.
	("tstqi" split): Avoid using memory for tstqi on address register.
	(splits): Remove constraints.
	("cmphi_1_hc12"): New from "cmphi_1" and tuned for 68HC12.
	("cmpdf", "cmpsf"): Remove since not used.
	("*tbeq", "*tbne", "*tbeq8", "*tbne8"): Also look in cc_status.value2.
	(peephole2): New peepholes to optimize tstqi and pre inc/dec addressing.

From-SVN: r50849