bug#43725: 28.0.50; Include feature/native-comp into master

[Lars Ingebrigtsen]

Eli Zaretskii <eliz@gnu.org> writes:

>> Mmmh, I think technically we could, similarly to what we do for the
>> advice, synthesize compile and install a trampoline.  This would read
>> the symbol-function and calls what's in inside.
>> 
>> This trampoline installation would be triggered inside Ffset.
>> 
>> So yeah I think we could, if that's the preferred way I can try this
>> way.
>
> Lars, Stefan: do you agree that this is the preferred way?

I'm not really qualified to have an opinion here, but if this allows
redefining primitives, I'm all for it.  Redefining primitives is a
useful tool.

Would these trampolines be installed only if the primitives are
redefined, so there'd be no performance impact on code running normally?

-- 
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   bloggy blog: http://lars.ingebrigtsen.no