http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47555
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Known to work| |4.3.4, 4.5.1
Keywords| |compile-time-hog,
| |memory-hog
Last reconfirmed| |2011.02.01 11:29:35
CC| |rguenth at gcc dot gnu.org,
| |spop at gcc dot gnu.org
Ever Confirmed|0 |1
Summary|Huge memory usage when |[4.4/4.6 Regression] Huge
|optimizing |memory usage when
| |optimizing
Target Milestone|--- |4.4.6
Known to fail| |4.4.5, 4.6.0
--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-02-01
11:29:35 UTC ---
GCC 4.5 uses around 800MB, most of the compile-time is spent in SCEV ccp,
IVOPTs and VRP - which all hints at SCEV being the culprit. GCC 4.6
tops over 3GB which kills my machine, so does 4.4. 4.3, similar to 4.5
tops at around 1GB.
