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 9.14 -7.58342%
> > 416.gamess 7.17 7.16 -0.13947%
> > 433.milc 7.68 7.65 -0.390625%
> > 434.zeusmp 5.57 5.55 -0.359066%
> > 435.gromacs 3.99 4.02 0.75188%
> > 436.cactusADM 4.59 4.50 -1.96078%
> > 437.leslie3d 5.78 3.98 -31.1419%
> > 444.namd 6.25 6.18 -1.12%
> > 447.dealII 11.3 11.3 0%
> > 450.soplex 8.61 8.59 -0.232288%
> > 453.povray 6.70 6.72 0.298507%
> > 454.calculix 2.81 2.74 -2.4911%
> > 459.GemsFDTD 6.07 4.95 -18.4514%
> > 465.tonto 4.44 4.45 0.225225%
> > 470.lbm 10.6 10.7 0.943396%
> > 481.wrf 4.56 4.50 -1.31579%
> > 482.sphinx3 11.2 11.1 -0.892857%
> > Est. SPECfp_base2006 6.42 6.15 -4.20561%
> >
> > Evandro, what do you get on AMD?
> >
> > Is that related to recent i386 backend FP changes?
Here's what we got:
?%
CPU2006
410.bwaves -6%
416.gamess
433.milc
434.zeusmp
435.gromacs
436.cactusADM
437.leslie3d -26%
444.namd
447.dealII
450.soplex
453.povray
454.calculix
459.GemsFDTD -12%
465.tonto
470.lbm
481.wrf
482.sphinx3
Though not as pronounced, definitely significant.
--
_______________________________________________________
Evandro Menezes AMD Austin, TX
