gcj/253: problems with instanceof when compilation from .classfiles

[Gregory R. Warnes]

The following reply was made to PR gcj/253; it has been noted by GNATS.

From: "Gregory R. Warnes" <warnes@biostat.washington.edu>
To: Bryce McKinlay <bryce@albatross.co.nz>
Cc: java-gnats@sourceware.cygnus.com,
        gcj Discussion List <java-discuss@sourceware.cygnus.com>
Subject: Re: gcj/253: problems with instanceof when compilation from .class
 files
Date: Wed, 7 Jun 2000 06:11:55 -0700 (PDT)

 One more set of timings, this time with optimization enabled:
 
   GRW>> FYI, my code is a simulation based tool, and compiling with gcj gives a
   GRW>> significant speedup over using a jit:
   GRW>> 
   GRW>>                                   10,000 iterations   100,000 iterations
   GRW>>                                   -----------------   ------------------
   GRW>> Blackdown java 1.2.2 RC3 (w jit): 15 Seconds          143 Seconds
   GRW>> gcj:                               9 Seconds          90 Seconds 
         gcj -02:                           7 Seconds          73 Seconds
 
 (-02 results agree with plain gcj and java results to 14 decimal places)
 
 Using gcj with -02 cuts execution time in half.  This will help a lot
 because I have a set of simulations to run that would have taken about
 week even using my 24 node beowulf cluster.  This cuts it down to about 3
 days.
 
 Thanks guys!!!
 
 Greg Warnes