Re: performance

[Per Bothner <per at bothner dot com>]

Dominique Boucher wrote:

> I had a search algorithm implemented in continuation-passing style with the
> --full-tailcalls option enabled. Of course, general tail calls are not
> really efficient in Kawa compared to plain Java method calls.

An idea for more efficient tail-calls:  Compile each procedure to two 
methods:  One takes the aruments and stashes them in the CallContext; 
the other extracts the arguments from the CalllContext and evaluates the 
procedure body.  This is basically what we currently do, but the new 
idea is that both methods can be custom-compiled.  In that case the main 
overhead is saving and restoring the parameters from the CallContext 
(and that can be avoided in non-tail-calls) plus possibly some slight 
"driver" overhead.
--
	--Per Bothner
per@bothner.com   http://per.bothner.com/