Message-Id:	<3.0.32.19990715013633.010d9ab0@pop.xs4all.nl>
X-Sender:	diep AT pop DOT xs4all DOT nl
X-Mailer:	Windows Eudora Pro Version 3.0 (32)
Date:	Thu, 15 Jul 1999 01:36:35 +0100
To:	pgcc AT delorie DOT com, pcg AT goof DOT com
From:	Vincent Diepeveen <diep AT xs4all DOT nl>
Subject:	calling functions
Mime-Version:	1.0
Reply-To:	pgcc AT delorie DOT com

Good morning,

Reading through the ia-64 technical manual the merced 
seems to have many registers:

128 general purpose  (64 bits)
128 floating point   (82 bits)
64  predicate        (1 bit)
128 special purpose

One of the reasons they give why it has so many
registers, they mention that they want to prevent
that calling a function gives a lot of overhead.

What is currently the overhad of a function call at the
PII, that this needs heavy optimization?

How many clocks for a typical call does pgcc need if we
have 2 integer parameters for it?

Greetings,
Vincent

- Raw text -