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
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