/ jruby Public
Do not optimize case with null value to switch #6443
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Optimized Fixnum switch is only possible when we have a
value and the
whenvalues are all int-ranged literal numbers.
The NPE in #6440 was due to us also trying to optimize homogeneous
int case/when even if the case value was null (omitted in source).
This patch limits the optimized switch generation to situations
where we have a non-null