[Bug middle-end/36262] [4.3/4.4 Regression] Extreme memory usage of VRP compared to older versions

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2008-05-19 09:18 -------
Confirmed.

4.3.1 -O: 177MB
4.3.1 -O2: 1.3GB
4.3.1 -O2 -fno-tree-vrp: 230MB
4.2.3 -O2: 230MB

 tree VRP              :  42.06 (55%) usr   1.33 (53%) sys  43.52 (55%) wall
2319231 kB (94%) ggc

whoooo ;)  Looks like sth new.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rguenth at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
      Known to fail|                            |4.3.0
      Known to work|                            |4.2.3
   Last reconfirmed|0000-00-00 00:00:00         |2008-05-19 09:18:21
               date|                            |
            Summary|Extreme memory usage        |[4.3/4.4 Regression] Extreme
                   |compared to older versions  |memory usage of VRP compared
                   |                            |to older versions
   Target Milestone|---                         |4.3.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36262