Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!samsung!uunet!auspex!guy
From: guy@auspex.auspex.com (Guy Harris)
Newsgroups: comp.arch
Subject: Re: RISC vs. CISC -- SPECmarks
Message-ID: <7466@auspex.auspex.com>
Date: 27 Apr 91 20:12:33 GMT
References: <1991Apr24.170804.25670@kithrup.COM> <1991Apr24.181932.17810@cs.cornell.edu> <1991Apr26.074427.4703@kithrup.COM>
Organization: Auspex Systems, Santa Clara
Lines: 10

>Yes, the PUSH instruction can execute in one cycle

Which also raises the question "how important are PUSHes"?  They may be
important on machines with few registers, but on RISCs with lots of
registers, they're not used much for passing arguments to procedures, as
arguments are generally passed in registers.

(In addition, multiple PUSHes in a row, if you end up doing that, can be
done with a bunch of stores and *one* register modification on a RISC
machine.)