Re: [PATCH RFC bpf-next 1/2] bpf: propagate nullness information for reg to reg comparisons

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Hi John,

> Agree it looks scary I wanted to play around with it more. I agree
> its not the same and off to investigate a few places we use
> __is_pointer_value now. Might add a few more tests while I'm at it.

I think that update to `__is_pointer_value` should probably be done
but is unrelated to this patch. And, as you mention, would require
crafting some number of test cases for NOT_INIT case :)

I'd prefer to keep the current predicate as is and reuse it at some
later point in the updated `__is_pointer_value` function.

What do you think?

Thanks,
Eduard




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