contrib/gcc/cfgcleanup.c

441 	 Still handle fallthru edges, as we can succeed to forward fallthru
594 		     threaded to the fallthru edge.  Avoid
623    fallthru edge, so it can be moved before B without adding or modifying
678    fallthru edge, so it can be moved after A without adding or modifying
773   /* If B has a fallthru edge to C, no need to move anything.  */
798 	 been if B is a forwarder block and C has no fallthru edge, but
824 	 not have an outgoing fallthru, then it can be moved
832       /* If B does not have an incoming fallthru, then it can be moved
1185   /* Get around possible forwarders on fallthru edges.  Other cases
1322   /* Match conditional jumps - this may get tricky when fallthru and branch
1343       /* Get around possible forwarders on fallthru edges.  Other cases
1515      fallthru and exception handling edges since these needs more
1541   /* fallthru edges must be forwarded to the same destination.  */
1830   edge e, e2, fallthru;
1865   fallthru = NULL;
1874 	fallthru = e;
1883       /* As noted above, first try with the fallthru predecessor.  */
1884       if (fallthru)
1886 	  /* Don't combine the fallthru edge into anything else.
1888 	  if (e == fallthru)
1894 		  && !(fallthru->src->flags & BB_DIRTY)))
1897 	  if (try_crossjump_to_edge (mode, e, fallthru))
1929 	  /* We've already checked the fallthru edge above.  */
1930 	  if (e2 == fallthru)
2026 		     default (fallthru).  */
2062 			     "Deleting fallthru block %i.\n",