Re: Does SIMD optimization of GCC 3.4.6 work?

2006-07-05 Thread Rene Rebe
Hi, On Wednesday 05 July 2006 20:26, Dave Korn wrote: > I believe Lionel's real problem is likely to be that he was hoping that > turning on the "-mmx -sse -sse2 -3dnow" options would auto-vectorise his code > for him. > > Lionel, (IIUIC) those options just /enable/ the use of the various SI

RE: Does SIMD optimization of GCC 3.4.6 work?

2006-07-05 Thread Dave Korn
On 05 July 2006 19:11, Rene Rebe wrote: > Hi, > > On Wednesday 05 July 2006 19:57, Mike Stump wrote: >> On Jul 4, 2006, at 7:43 PM, [EMAIL PROTECTED] wrote: >>> The codec is at http://www.sourceforge.net/projects/openavs/. >>> Currently, it requires a 3Ghz or better CPU to get a resonable >>> fra

Re: Does SIMD optimization of GCC 3.4.6 work?

2006-07-05 Thread Rene Rebe
Hi, On Wednesday 05 July 2006 19:57, Mike Stump wrote: > On Jul 4, 2006, at 7:43 PM, [EMAIL PROTECTED] wrote: > > The codec is at http://www.sourceforge.net/projects/openavs/. > > Currently, it requires a 3Ghz or better CPU to get a resonable > > framerate. I would like the codec to be useful ev

Re: Does SIMD optimization of GCC 3.4.6 work?

2006-07-05 Thread Mike Stump
On Jul 4, 2006, at 7:43 PM, [EMAIL PROTECTED] wrote: The codec is at http://www.sourceforge.net/projects/openavs/. Currently, it requires a 3Ghz or better CPU to get a resonable framerate. I would like the codec to be useful even on 586 ( 1Ghz or so ). Any ideas? Recode slower parts in as

Re: Does SIMD optimization of GCC 3.4.6 work?

2006-07-05 Thread Ian Lance Taylor
This question is not appropriate for the gcc@gcc.gnu.org mailing list. It would be appropriate on the [EMAIL PROTECTED] mailing list. Thanks. [EMAIL PROTECTED] writes: > I am wondering if i have used -O, -O2 or -O3, do i still benifit from > flags such as -march -fmpmath -ffast-math -mmx -sse -s