cfg.c (redirect_edge_succ_nodup): Avoid overflows due to roundoff errors.

	* cfg.c (redirect_edge_succ_nodup): Avoid overflows due to roundoff
	errors.

From-SVN: r56184

gcc/ChangeLog

+Sat Aug 10 19:59:43 CEST 2002  Jan Hubicka  <jh@suse.cz>
+			       Graham Stott
+
+	* cfg.c (redirect_edge_succ_nodup): Avoid overflows due to roundoff
+	errors.
+
 2002-08-10  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* emit-rtl.c (emit_jump_insn_before, emit_call_insn_before,

gcc/cfg.c

@@ -455,6 +455,8 @@ redirect_edge_succ_nodup (e, new_succ)
     {
       s->flags |= e->flags;
       s->probability += e->probability;
+      if (s->probability > REG_BR_PROB_BASE)
+	s->probability = REG_BR_PROB_BASE;
       s->count += e->count;
       remove_edge (e);
       e = s;