flow.c (tidy_fallthru_edge): Don't delete the jump when it's a still-valid conditional jump.

        * flow.c (tidy_fallthru_edge): Don't delete the jump when it's
        a still-valid conditional jump.

From-SVN: r33468

gcc/ChangeLog

 2000-04-26  Richard Henderson  <rth@cygnus.com>
 
+	* flow.c (tidy_fallthru_edge): Don't delete the jump when it's
+	a still-valid conditional jump.
+
+2000-04-26  Richard Henderson  <rth@cygnus.com>
+
 	* jump.c (invert_jump): Always invert REG_BR_PROB.  Do it correctly.
 
 	* bb-reorder.c (reorder_basic_blocks): Don't run estimate_probability.

gcc/flow.c

@@ -2407,7 +2407,9 @@ tidy_fallthru_edge (e, b, c)
      If block B consisted only of this single jump, turn it into a deleted
      note.  */
   q = b->end;
-  if (GET_CODE (q) == JUMP_INSN)
+  if (GET_CODE (q) == JUMP_INSN
+      && (simplejump_p (q)
+	  || (b->succ == e && e->succ_next == NULL)))
     {
 #ifdef HAVE_cc0
       /* If this was a conditional jump, we need to also delete