Make a temporary sequence for a jump emitted only to examine its length.

	* bb-reorder.c (get_uncond_jump_length): Avoid using delete_insn,
	emit into a sequence instead.

From-SVN: r217088

gcc/ChangeLog

+2014-11-04  Bernd Schmidt  <bernds@codesourcery.com>
+
+	* bb-reorder.c (get_uncond_jump_length): Avoid using delete_insn,
+	emit into a sequence instead.
+
 2014-11-04  Jan-Benedict Glaw  <jbglaw@lug-owl.de>
 
 	* config/sh/sh.c (emit_fpu_switch): Drop unused automatic variable.

gcc/bb-reorder.c

@@ -1393,13 +1393,12 @@ get_uncond_jump_length (void)
   rtx_insn *label, *jump;
   int length;
 
-  label = emit_label_before (gen_label_rtx (), get_insns ());
+  start_sequence ();
+  label = emit_label (gen_label_rtx ());
   jump = emit_jump_insn (gen_jump (label));
-
   length = get_attr_min_length (jump);
+  end_sequence ();
 
-  delete_insn (jump);
-  delete_insn (label);
   return length;
 }