Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!gatech!ncsuvx!ece-csc!ncrcae!usceast!opusc!bert
From: bert@opusc.CS.SCAROLINA.EDU (Bert Still)
Newsgroups: comp.windows.x
Subject: Re: X11R3 with gcc
Summary: X11R3, Patches 1-9, Purdue+ speedups, compiled with gcc-1.35
	 on a SUN4/260 (Sys4-3.2) is very large and very slow...?
Message-ID: <138@opusc.CS.SCAROLINA.EDU>
Date: 10 May 89 18:11:44 GMT
References: <89Apr20.202936edt.741@church.csri.toronto.edu>
Organization: Univ. of South Carolina, Columbia
Lines: 36

In article <89Apr20.202936edt.741@church.csri.toronto.edu>, moraes@CSRI.TORONTO.EDU (Mark Moraes) writes:
>	[Sun3's, with gcc-1.34, SunOS3.5, etc...]
> In all cases, we have seen substantial improvement in performance (20%
> or more) by using gcc (also 10-20% reduced binary size, depending what
> options you use - I prefer to use only -O, some may want to try
> -fstrength-reduce and -finline-functions); the PurduePlus or Purdue2.1
> fixes take advantage of gcc inline assembler to improve performance
> further on Suns, at least.
> 

	Well, I have two differences: first, we have only SUN4's (and
no SUN3's), and second, the binaries are about 3 times the size of the
SUN cc generated ones... I used the following options: -O -traditional
-fwritable-strings -finline-functions -fcombine-regs -Dinline=INLINE
-DNOSTDHDRS -DPURDUE -DNO_3_60_CG4 -DTCPCONN -DUNIXCONN.  I tried
-fstrength-reduce, but I keep getting "cc1 caught fatal signal 4"
presumably meaning an illigal instruction (perhaps a bad pointer?)...
I also noticed that rgb dumps core (segmentation fault) when created
with gcc-1.35.  I've been poking around a bit with the rgb sources, but
I can't see any reason for the core dump.  If anyone has any suggestions
on the "size" problem with X11R3, I'd sure like to hear it.  X is a very
nice windowing system, but I would like a litter faster execution speed...
(I know, I keep saying gcc-1.35... but that's what the thing was named on
osu-cis when I got it...)

	And now, I will go eagerly await the filling of my e-mailbox
with wonderful ideas... :-)
				Bert

bert%cs.scarolina.edu@RELAY.CS.NET
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