system verilog - Unbounded (infinite) repetitions in transitions for covergroup bins -


how can define coverage bin transition might have many repetitions in it? i'm trying this:

bins st = (2=> 3[* 1:$] => 2);

of course, doesn't work. simulators give error messages when compiling line.

edit: simulators complain $ symbol, don't recognize "unbounded maximum". when writing sequences, legal use consecutive repetition operator [* 1:$]. hope next version of systemverilog makes legal covergroups too.

as crude workaround, substituted $ large number works fine case. 

bins st = (2=> 3[* 1:1000] => 2);

systemverilog transition bins not designed handle simple transitions. more complex should modeled using cover directive, or combination of sequence.triggered() method , covergroup.


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