RFA: MN10300: Add support for SETLB and Lcc instructions

[Nick Clifton]

Hi Richard,

   Thanks for the patch review.  Sorry for not responding earlier, but 
some other work got in the way.

   I have attached a revised patch which addresses all of the points you 
raised except one:

>> +	  else if (loop->header != loop->latch
>> +	    reason = "it is not a simple do-while loop";
>
> Why?  A loop with multiple blocks should be fine with Lcc.

   The problem I found here was that I did not know how to find all of 
the test-and-loop-back insns if the loop spanned multiple blocks.  The 
revised patch includes a comment saying that loops spanning multiple 
blocks could be supported, but I would like to leave that for a future 
patch rather than trying to get it all working now.

Cheers
   Nick




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