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[Bug debug/41371] [4.5/4.6 Regression] var-tracking is slow and memory hungry
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 4 Jun 2010 11:03:39 -0000
- Subject: [Bug debug/41371] [4.5/4.6 Regression] var-tracking is slow and memory hungry
- References: <bug-41371-9596@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- 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