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Path: utzoo!attcan!uunet!lll-winken!xanth!ames!sgi!jmb@patton.SGI.COM
From: jmb@patton.SGI.COM (Jim Barton)
Newsgroups: comp.sys.sgi,comp.lang.lisp
Subject: Re: Kyoto Common Lisp on SGI
Summary: Assembly? AAACK!
Keywords: KCL, SGI, Iris, Porting
Message-ID: <29503@sgi.SGI.COM>
Date: 28 Mar 89 17:35:46 GMT
References: <818@mv06.ecf.toronto.edu>
Sender: daemon@sgi.SGI.COM
Organization: Silicon Graphics, Inc., Mountain View, CA
Lines: 29

In article <818@mv06.ecf.toronto.edu>, soosaar@ecf.toronto.edu (Robert Soosaar) writes:
> We are porting Kyoto Common Lisp to our Silicon Graphics
> workstations (Personal Iris and 3000 series) and have come
> across a few problems.
...
> 
> On the Personal Iris:
> 	A few of the functions are written with in-line assembly
> 	code.  These functions (in earith.c and bitop.c) have to
> 	be converted into assembler code for the MIPS processor.
> 
...
> Rob Soosaar


Might I suggest you just write the same code in C, and let the MIPS optimizer
turn it into fast assembly.  I haven't hand coded assembly for a 4D for
speed purposes for years.  The last time I did, I spent hours getting at as
fast as possible.  Then I wrote the same function in C, compiled & optmized
it, and found out that the generated code had one less instruction than I
had.  Why beat your brains out?

-- Jim Barton
Silicon Graphics Computer Systems    "UNIX: Live Free Or Die!"
jmb@sgi.sgi.com, sgi!jmb@decwrl.dec.com, ...{decwrl,sun}!sgi!jmb

  "I used to be disgusted, now I'm just amused."
			- Elvis Costello, 'Red Shoes'
--