question about a command like 'goto ' in Python's bytecode orit's just a compiler optimization?

JanC usenet at janc.invalid
Fri Jun 19 02:11:55 CEST 2009

Hendrik van Rooyen wrote:

> It is my opinion that it is not possible to make a useful machine,
> virtual or real, which executes instructions sequentially, if the
> instruction set does not contain a conditional jump of some sort.
> I have tried doing it using conditional calls, and it fails on
> the equivalent of the first if ..., elif ...  you try to write.

I'm 99.99% sure you can implement that by using a decision subroutine that
returns subroutine pointers (and maybe parameter pointers), but it certainly
won't be efficient on current CPU designs...


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