[Bug middle-end/54827] [4.8 Regression] 70% compile time regression building builtin-sched.c from Linux's perf

[markus at trippelsdorf dot de]

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