Help for compiling PERFECTLY SPECjbb2000 with gcj

Thu Aug 28 18:58:00 GMT 2003

Do -ffast-math -mfpmath=sse preserve Java fp semantics? The benchmark is very sensitive to floating point rounding. In my experience the initial correctness testing run fails if you get that appreciably wrong, though it probably doesn't change the amount of work done by later stages of the benchmark very much.
Hans
> -----Original Message-----
> From: Anthony Green [mailto:green@redhat.com]
> Sent: Thursday, August 28, 2003 11:29 AM
> To: Tony Reix
> Cc: java@gcc.gnu.org; Tony.Reix@frec.bull.fr
> Subject: Re: Help for compiling PERFECTLY SPECjbb2000 with gcj
>>> On Wed, 2003年08月27日 at 09:05, Tony Reix wrote:
> > Done on a 2xia32 (RedHat 9 , 2.4.20-8smp) 1.266 GHz and 
> 512K cache, gcc 3.3.1 .
>> Try compiling with -O3 -fomit-frame-pointer -march=pentium4
> -finline-functions -finline-limit=800 -ffast-math -mfpmath=sse
>> AG
>> -- 
> Anthony Green <green@redhat.com>
> Red Hat, Inc.
>