Re: Shrinking the C core

[Ihor Radchenko]

"Alfred M. Szmidt" <ams@gnu.org> writes:

>    Not really. Native compilation already uses GCC. At least on the byte
>    code instructions and, separately, in subr code.
>    There is more than just GCC vs byte code VM in it.
>
> It is not about native compilation!  It is about what OPTIMIZATIONS
> can be done to the actual code flow.  Just using GCC doesn't do ANY
> optimizations to how the Lisp code is optimized or how its flow is
> changed due to optimizations!  

Then, what does GCC do? AFAIK, GCC JIT takes the Elisp byte code,
transforms it into JIT pseudocode, and optimizes the actual code flow.

For example, when I write

(when (> x y) (when (> x y) x))

I expect GCC JIT to throw away the duplicate comparison.

-- 
Ihor Radchenko // yantar92,
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