[Bug fortran/54332] [4.8 Regression] 481.wrf in SPEC CPU 2006 takes > 10GB memory to compile

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54332

--- Comment #15 from H.J. Lu <hjl.tools at gmail dot com> 2012-08-21 17:57:59 
UTC ---
It failed with

diff --git a/gcc/passes.c b/gcc/passes.c
index b6fe18e..10174c4 100644
--- a/gcc/passes.c
+++ b/gcc/passes.c
@@ -1449,7 +1449,6 @@ init_optimization_passes (void)
     NEXT_PASS (pass_lim);
     NEXT_PASS (pass_copy_prop);
     NEXT_PASS (pass_dce_loop);
-    NEXT_PASS (pass_tree_unswitch);
     NEXT_PASS (pass_scev_cprop);
     NEXT_PASS (pass_record_bounds);
     NEXT_PASS (pass_check_data_deps);

Somehow just processing the -funswitch-loops command-line option
triggers this problem.