Re: Serious SPEC CPU 2006 FP performance regressions on IA32

2007-01-12 Thread H. J. Lu
On Fri, Jan 12, 2007 at 02:06:48PM -0500, Daniel Berlin wrote: > On 1/12/07, H. J. Lu <[EMAIL PROTECTED]> wrote: > >On Thu, Jan 11, 2007 at 08:06:31PM -0500, Daniel Berlin wrote: > >> On 1/11/07, Grigory Zagorodnev <[EMAIL PROTECTED]> > >wrote: > >> >Menezes, Evandro wrote: > >> >> Though not as p

Re: Serious SPEC CPU 2006 FP performance regressions on IA32

2007-01-12 Thread Daniel Berlin
On 1/12/07, H. J. Lu <[EMAIL PROTECTED]> wrote: On Thu, Jan 11, 2007 at 08:06:31PM -0500, Daniel Berlin wrote: > On 1/11/07, Grigory Zagorodnev <[EMAIL PROTECTED]> wrote: > >Menezes, Evandro wrote: > >> Though not as pronounced, definitely significant. > >> > > > >Using binary search I've detecte

Re: Serious SPEC CPU 2006 FP performance regressions on IA32

2007-01-12 Thread H. J. Lu
On Thu, Jan 11, 2007 at 08:06:31PM -0500, Daniel Berlin wrote: > On 1/11/07, Grigory Zagorodnev <[EMAIL PROTECTED]> wrote: > >Menezes, Evandro wrote: > >> Though not as pronounced, definitely significant. > >> > > > >Using binary search I've detected that 30% performance regression of > >cpu2006/43

Re: Serious SPEC CPU 2006 FP performance regressions on IA32

2007-01-11 Thread Daniel Berlin
On 1/11/07, Grigory Zagorodnev <[EMAIL PROTECTED]> wrote: Menezes, Evandro wrote: > Though not as pronounced, definitely significant. > Using binary search I've detected that 30% performance regression of cpu2006/437.leslie3d benchmark is caused by revision 117891. http://gcc.gnu.org/viewcvs?vi

Re: Serious SPEC CPU 2006 FP performance regressions on IA32

2007-01-11 Thread Grigory Zagorodnev
Menezes, Evandro wrote: Though not as pronounced, definitely significant. Using binary search I've detected that 30% performance regression of cpu2006/437.leslie3d benchmark is caused by revision 117891. http://gcc.gnu.org/viewcvs?view=rev&revision=117891 I assume same commit causes regres

Re: Serious SPEC CPU 2006 FP performance regressions on IA32

2006-12-13 Thread Richard Guenther
On 12/13/06, Menezes, Evandro <[EMAIL PROTECTED]> wrote: > Meissner, Michael wrote: > >>> 437.leslie3d -26% > > it was felt that the PPRE patches that were added on > November 13th were > > the cause of the slowdown: > > http://gcc.gnu.org/ml/gcc/2006-12/msg00023.html > > > > Has anybody tri

RE: Serious SPEC CPU 2006 FP performance regressions on IA32

2006-12-13 Thread Menezes, Evandro
> Meissner, Michael wrote: > >>> 437.leslie3d -26% > > it was felt that the PPRE patches that were added on > November 13th were > > the cause of the slowdown: > > http://gcc.gnu.org/ml/gcc/2006-12/msg00023.html > > > > Has anybody tried doing a run with just ppre disabled? > > Right. PPRE

Re: Serious SPEC CPU 2006 FP performance regressions on IA32

2006-12-13 Thread Richard Guenther
On 12/13/06, Grigory Zagorodnev <[EMAIL PROTECTED]> wrote: Meissner, Michael wrote: >>> 437.leslie3d-26% > it was felt that the PPRE patches that were added on November 13th were > the cause of the slowdown: > http://gcc.gnu.org/ml/gcc/2006-12/msg00023.html > > Has anybody tried doing a r

Re: Serious SPEC CPU 2006 FP performance regressions on IA32

2006-12-13 Thread Grigory Zagorodnev
Meissner, Michael wrote: 437.leslie3d-26% it was felt that the PPRE patches that were added on November 13th were the cause of the slowdown: http://gcc.gnu.org/ml/gcc/2006-12/msg00023.html Has anybody tried doing a run with just ppre disabled? Right. PPRE appears to be the reason of slow

RE: Serious SPEC CPU 2006 FP performance regressions on IA32

2006-12-11 Thread Meissner, Michael
> -Original Message- > From: H. J. Lu [mailto:[EMAIL PROTECTED] > Sent: Monday, December 11, 2006 1:09 PM > To: Menezes, Evandro > Cc: gcc@gcc.gnu.org; [EMAIL PROTECTED]; rajagopal, dwarak; Meissner, > Michael > Subject: Re: Serious SPEC CPU 2006 FP performance regres

Re: Serious SPEC CPU 2006 FP performance regressions on IA32

2006-12-11 Thread H. J. Lu
On Mon, Dec 11, 2006 at 11:35:27AM -0600, Menezes, Evandro wrote: > HJ, > > > > Gcc 4.3 revision 119497 has very poor SPEC CPU 2006 FP performance > > > regressions on P4, Pentium M and Core Duo, comparing aganst > > > gcc 4.2 20060910. With -O2, the typical regressions look like > > > > > >

RE: Serious SPEC CPU 2006 FP performance regressions on IA32

2006-12-11 Thread Menezes, Evandro
HJ, > > Gcc 4.3 revision 119497 has very poor SPEC CPU 2006 FP performance > > regressions on P4, Pentium M and Core Duo, comparing aganst > > gcc 4.2 20060910. With -O2, the typical regressions look like > > > > Gcc 4.2 Gcc 4.3 > > 410.bwaves 9.89

Re: Serious SPEC CPU 2006 FP performance regressions on IA32 and x86-64

2006-12-11 Thread H. J. Lu
On Fri, Dec 08, 2006 at 01:02:27PM -0600, Menezes, Evandro wrote: > HJ, > > I'll run the three worst offenders below and get back to y'all. > > The full results will take longer. Hi Evandro, I also saw similar issues on x86-64 with -O2 -ffast-math: gcc-4.2 rev 116820 gcc

RE: Serious SPEC CPU 2006 FP performance regressions on IA32

2006-12-08 Thread Menezes, Evandro
HJ, I'll run the three worst offenders below and get back to y'all. The full results will take longer. -- ___ Evandro Menezes AMDAustin, TX > -Original Message- > From: H. J. Lu [mailto:[EMAIL PROTECTED]

Re: Serious SPEC CPU 2006 FP performance regressions on IA32

2006-12-08 Thread H. J. Lu
On Fri, Dec 08, 2006 at 07:39:45PM +0100, Uros Bizjak wrote: > H. J. Lu wrote: > > >Gcc 4.3 revision 119497 has very poor SPEC CPU 2006 FP performance > >regressions on P4, Pentium M and Core Duo, comparing aganst > >gcc 4.2 20060910. With -O2, the typical regressions look like > > > > > > > I th

Re: Serious SPEC CPU 2006 FP performance regressions on IA32

2006-12-08 Thread Uros Bizjak
H. J. Lu wrote: Gcc 4.3 revision 119497 has very poor SPEC CPU 2006 FP performance regressions on P4, Pentium M and Core Duo, comparing aganst gcc 4.2 20060910. With -O2, the typical regressions look like I think that you are looking at the same problem as http://gcc.gnu.org/ml/gcc/2006-12/