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[Bug middle-end/54827] [4.8 Regression] 70% compile time regression building builtin-sched.c from Linux's perf
- From: "markus at trippelsdorf dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 05 Oct 2012 17:54:57 +0000
- Subject: [Bug middle-end/54827] [4.8 Regression] 70% compile time regression building builtin-sched.c from Linux's perf
- Auto-submitted: auto-generated
- References: <bug-54827-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54827
--- Comment #2 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2012-10-05 17:54:57 UTC ---
Caused by var-tracking. With-fno-var-tracking everything is fine again:
% time gcc -fno-var-tracking -w -c -O3 -ggdb3 builtin-sched.i
gcc -fno-var-tracking -w -c -O3 -ggdb3 builtin-sched.i 10.50s user 0.04s
system 99% cpu 10.574 total