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. -- H.J.
