See <http://gcc.gnu.org/ml/gcc-patches/2005-08/msg01433.html> and <http://gcc.gnu.org/ml/gcc/2005-08/msg00689.html>.
Note this could also be considered a compile time hog for checking enabled case. -- Summary: SSA_NAMEs are not released after no longer being used. Product: gcc Version: 4.1.0 Status: UNCONFIRMED Keywords: memory-hog Severity: normal Priority: P2 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: pinskia at gcc dot gnu dot org CC: gcc-bugs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23940