Re: Shrinking the C core

[Ihor Radchenko]

Po Lu <luangruo@yahoo.com> writes:

>> However, GCC JIT has no information about the internal structure of the
>> `floor' subr. Hence, it is currently unable to perform such
>> optimization.
>>
>> It could, if it were somehow given an information about `floor'
>> implementation.
>
> This should thus be implemented in the native compiler, without
> affecting the code of Ffloor itself.

I do understand that the approach you propose is indeed used, for
example, for `car' in emit_lval_XCAR. However, is it practical for
functions like `floor'?

`car' implementation is very unlikely to change in future. But `floor'
and other functions (we should not be limited to `floor') may change
their implementations. The extra "native comp" copy of the
implementation will need to be always synchronized with the original
implementation. I doubt that it is practical maintenance-wise.

-- 
Ihor Radchenko // yantar92,
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