Re: Add Nullif case for eval_const_expressions_mutator

On 24.03.21 11:52, houzj.fnst@fujitsu.com wrote:
>> +                if (!has_nonconst_input)
>> +                    return ece_evaluate_expr(expr);
>>
>> That's not okay without a further check to see if the comparison function used
>> by the node is immutable.  Compare ScalarArrayOpExpr, for instance.
> 
> Thanks for pointing it out.
> Attaching new patch with this change.

This patch looks okay to me and addresses all the feedback that was  
given.  If there are no more comments, I'll commit it in a few days.