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

2 files changed, 8 insertions, 0 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 02b40fc..d62b26d 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+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,
diff --git a/gcc/cfg.c b/gcc/cfg.c
index 33599d3..c6ffdc2 100644
--- a/gcc/cfg.c
+++ b/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;