[PATCH bfin] Check register in compare instruction

[Jie Zhang]

All the following instructions are illegal on Blackfin:

CC = I0 == 0;
CC = I0 == I0;
CC = I0 < 0;
CC = I0 < I0;
CC = I0 <= 0;
CC = I0 <= I0;

I have just committed the attached patch to catch them.


Jie
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