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[Bug debug/41371] [4.5/4.6 Regression] var-tracking is slow and memory hungry
- From: "pluto at agmk dot net" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 16 May 2010 12:26:25 -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 #25 from pluto at agmk dot net 2010-05-16 12:26 -------
PR43776 constains another thestcase:
results for top of 4.5/4.6:
$ time g++45 -Wall -c 1.ii -O1 -g2
1.ii: In member function 'void es::ClockAnalyzer::initPrimitives()':
1.ii:38722:7: note: variable tracking size limit exceeded with
-fvar-tracking-assignments, retrying without
g++45 -Wall -c 1.ii -O1 -g2 32,72s user 0,35s system 99% cpu 33,096 total
$ time g++46 -Wall -c 1.ii -O1 -g2
1.ii: In member function 'void es::ClockAnalyzer::initPrimitives()':
1.ii:38722:7: note: variable tracking size limit exceeded with
-fvar-tracking-assignments, retrying without
g++46 -Wall -c 1.ii -O1 -g2 23,68s user 0,40s system 99% cpu 24,099 total
btw. the '-O1 -fno-inline -g2' has worse results.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41371