[Bug optimization/13430] New: [3.4 regression] infinite(?) loop in bb-reorder

["steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

The test case for PR12322 is not spending most of its time in GCSE.  In fact 
GCSE is _faster_ than 3.3.  The problem is that we enter a very long (and I 
suspect in fact an infinite) loop in bb-reorder. 
 
In particular, bb-reorder.c:714: 
if ((e->src != ENTRY_BLOCK_PTR && bbd[e->src->index].end_of_trace >= 0) 
 
Honza, bb-reorder is yours, can you give this a look?

-- 
           Summary: [3.4 regression] infinite(?) loop in bb-reorder
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Keywords: compile-time-hog
          Severity: critical
          Priority: P1
         Component: optimization
        AssignedTo: hubicka at gcc dot gnu dot org
        ReportedBy: steven at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
OtherBugsDependingO 12322
             nThis:


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13430