On Linux/x86-64, revision 149750: http://gcc.gnu.org/ml/gcc-cvs/2009-07/msg00631.html
caused: FAIL: gcc.dg/tree-ssa/loop-2.c scan-tree-dump-times optimized "99" 0 -- Summary: [4.5 Regression] Revision 149750 failed gcc.dg/tree- ssa/loop-2.c Product: gcc Version: 4.5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: hjl dot tools at gmail dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40798