[Bug tree-optimization/54073] [4.7/4.8 Regression] SciMark Monte Carlo test performance has seriously decreased in recent GCC releases

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54073

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-07-24
                 CC|                            |rguenth at gcc dot gnu.org
      Known to work|                            |4.6.4
            Summary|SciMark Monte Carlo test    |[4.7/4.8 Regression]
                   |performance has seriously   |SciMark Monte Carlo test
                   |decreased in recent GCC     |performance has seriously
                   |releases                    |decreased in recent GCC
                   |                            |releases
     Ever Confirmed|0                           |1
      Known to fail|                            |4.7.0, 4.8.0

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-07-24 
09:22:45 UTC ---
Our autotesters have a jump of this magnitude between

K8:   good r171332, bad r171367
K10:  good r171399, bad r171360
IA64: good r182218, bad r182265

needs further bisection, there are a few candidates within the 171399:171360
range.  IA64 is supposedly sth else (the fix for PR21617 pops up here).

Confirmed at least.