Re: [PATCH] Optimize UBSAN_NULL checks, add sanopt.c

[Maxim Ostapenko]

If in the future we e.g. IPA-prop propagate the nonfreeing_call_p
property through the callgraph (as in, if the function you call
is non-overridable and you know the flag for it, use it),

FYI we tried this on SPEC and some other apps but saw no performance 
improvements.

Yes, we have a patch for this kind of analysis, but it doesn't produce 
reasonable performance improvements indeed. Anyway, we are able to 
perform measurements once again on top of your patch if you decide to 
commit it.

-Maxim
-Y