[Bug tree-optimization/49365] New: 436.cactusADM performance regression

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49365

           Summary: 436.cactusADM performance regression
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: rguenth@gcc.gnu.org
            Target: x86_64-*-*


For 436.cactusADM we see a 20% regression in performance around 2010 Nov 10th
here:
http://gcc.opensuse.org/SPEC/CFP/sb-barbella.suse.de-head-64-2006/436_cactusADM_big.png

Which is with -O3 -ffast-math -funroll-loops -fpeel-loops -march=barcelona