[Bug middle-end/39326] Segmentation fault with -O1, out of memory with -O2

[rguenth at gcc dot gnu dot org]

------- Comment #18 from rguenth at gcc dot gnu dot org  2009-03-17 12:42 -------
Vlad, for the second testcase I see

-O0:

 expand                :   0.78 (19%) usr   0.04 ( 5%) sys   0.83 (16%) wall  
44335 kB (49%) ggc
 integrated RA         :   1.05 (25%) usr   0.03 ( 4%) sys   1.13 (22%) wall   
1036 kB ( 1%) ggc
 reload                :   0.55 (13%) usr   0.02 ( 3%) sys   0.59 (12%) wall   
3585 kB ( 4%) ggc

-O1:

 integrated RA         :  73.95 (77%) usr   1.18 (50%) sys  76.20 (76%) wall   
2898 kB ( 3%) ggc

(on alias improvements branch I see
 combiner              :  24.89 (17%) usr   0.51 (28%) sys  25.41 (17%) wall 
448053 kB (82%) ggc
 integrated RA         :  69.81 (47%) usr   0.36 (20%) sys  70.22 (46%) wall   
3212 kB ( 1%) ggc
as tree loop invariant motion does lots of stuff there)

-O2:

 PRE                   :  25.49 (26%) usr   0.03 ( 3%) sys  25.52 (26%) wall   
3513 kB ( 3%) ggc
 integrated RA         :  36.98 (38%) usr   0.24 (21%) sys  37.31 (38%) wall   
2158 kB ( 2%) ggc


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |vmakarov at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39326