Re: Enabling native compilation by default when libgccjit is present

[Stefan Monnier]

> I don't think this could fly in practice, because I see no way of
> predicting when it will provide a benefit.

I'm pretty sure it can fly in some practice, but I think it would have
to be a JIT rather than AOT compiler: rather than having to predict the
proportion of time spent in subrs vs time spent in bytecode.c, it could
measure it and (re)compile the parts that seem most promising.
I think Java's HotSpot compiler was among the firsts to do this kind
of thing, but I expect it's fairly widespread in JIT compilers nowadays.


        Stefan