On Fri, 2008-09-05 at 09:03 -0700, H.J. Lu wrote: > On Fri, Sep 5, 2008 at 8:01 AM, Luis Machado <[EMAIL PROTECTED]> wrote: > > On Fri, 2008-09-05 at 07:16 -0700, H.J. Lu wrote: > >> On Fri, Sep 5, 2008 at 6:59 AM, Luis Machado <[EMAIL PROTECTED]> wrote: > >> > Hi Vladimir, > >> > > >> > I was just going through some benchmarks on PPC and noticed that your > >> > patch from 08/26 (http://gcc.gnu.org/ml/gcc-cvs/2008-08/msg01152.html) > >> > caused a significant regression on both facerec (~17%) and applu (~4%) > >> > for 64-bit PPC. > >> > > >> > There are other degradations that i'm still working on isolating the > >> > cause, just to give you a heads up on the problem. > >> > > >> > >> Can you try ira-merge branch? There is one patch: > >> > >> http://gcc.gnu.org/ml/gcc-patches/2008-09/msg00427.html > >> > >> which is supposed to improve SPEC CPU performance. > >> But no one can explain why. > >> > >> Thanks. > >> > > > > Hi, > > > > The patch didn't change the numbers. I still see the same degradation on > > both facerec and applu. > > > > Did you use mainline or ira-merge branch? Mainline has so many changes > after IRA merge, any of which can impact SPEC performance. The ira-merge > branch is mainline at revision 139590 + IRA fixes. It can be used to compare > IRA performance against revision 139589.
I used the mainline + patch. I'll try the branch in a while, though the SPEC numbers for these testcases are pretty much the same after IRA has been merged until today's trunk. Thanks, Luis
