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[Bug debug/41371] [4.5/4.6 Regression] var-tracking is slow and memory hungry



------- Comment #35 from rguenth at gcc dot gnu dot org  2010-06-04 11:03 -------
Created an attachment (id=20837)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20837&action=view)
bnc611650

Another testcase from open-office this time, on i?86-linux only.

$> time  g++ -c -g -Os -fomit-frame-pointer analysis.ii

real    103m46.642s
user    96m21.093s
sys     0m1.196s

$> time g++ -c -g -Os analysis.ii

real    0m19.345s
user    0m19.177s
sys     0m0.168s

$> time  g++ -c -Os -fomit-frame-pointer analysis.ii

real    0m3.747s
user    0m3.640s
sys     0m0.104s

numbers above are from the 4.5 branch rev. 159866.  trunk is also very slow,
but the compile didn't yet finish.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41371


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