[llvm-dev] Existing studies on the benefits of pointer analysis

[Daniel Berlin via llvm-dev]

>
>
>
> I’m still a big fan of context sensitive, flow insensitive, unification
> based models.
>

CFL can emulate this in the same time bound.


>  Contrary to your claim, context sensitivity *is* useful for mod-ref
> analysis, e.g. “can I hoist a load across this call”?  Context sensitivity
> improves the precision of the mod/ref set of the call.
>
>
-Chris
>

Yeah.
It depends entirely on your goal. In reality, often what you really want is
something to say "hey, i've got this pointer over here, and i really want
to hoist  it up here. Do something, tell me if that is possible".

(This is actually why i'm a fan of CFL-AA. You can essentially make it as
expensive or not expensive as you want, and it still does really well in
pracftice in time)
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