cfganal.c (set_edge_can_fallthru_flag): Clear the EDGE_CAN_FALLTHRU flag before setting it.

	* cfganal.c (set_edge_can_fallthru_flag): Clear the EDGE_CAN_FALLTHRU
	flag before setting it.

From-SVN: r61345

gcc/ChangeLog

+2003-01-15  Josef Zlomek  <zlomekj@suse.cz>
+
+	* cfganal.c (set_edge_can_fallthru_flag): Clear the EDGE_CAN_FALLTHRU
+	flag before setting it.
+
 2003-01-15  Roger Sayle  <roger@eyesopen.com>
 
 	* c-semantics.c (genrtl_while_stmt):  Improve initial RTL generation

gcc/cfganal.c

@@ -225,10 +225,14 @@ set_edge_can_fallthru_flag ()
     {
       edge e;
 
-      /* The FALLTHRU edge is also CAN_FALLTHRU edge.  */
       for (e = bb->succ; e; e = e->succ_next)
-	if (e->flags & EDGE_FALLTHRU)
-	  e->flags |= EDGE_CAN_FALLTHRU;
+	{
+	  e->flags &= ~EDGE_CAN_FALLTHRU;
+
+	  /* The FALLTHRU edge is also CAN_FALLTHRU edge.  */
+	  if (e->flags & EDGE_FALLTHRU)
+	    e->flags |= EDGE_CAN_FALLTHRU;
+	}
 
       /* If the BB ends with an invertable condjump all (2) edges are
 	 CAN_FALLTHRU edges.  */