fix -fdump-unnumbered-links

for  gcc/ChangeLog

	* print-rtl.c (print_rtx): Check the correct range for
	flag_dump_unnumbered_links to behave as documented.

From-SVN: r227086

gcc/ChangeLog

 2015-08-21  Alexandre Oliva <aoliva@redhat.com>
 
+	* print-rtl.c (print_rtx): Check the correct range for
+	flag_dump_unnumbered_links to behave as documented.
+
 	PR rtl-optimization/67227
 	PR rtl-optimization/64164
 	* alias.c (memrefs_conflict_p): Handle VALUEs in PLUS better.

gcc/print-rtl.c

@@ -550,7 +550,7 @@ print_rtx (const_rtx in_rtx)
 	      }
 
 	    if (flag_dump_unnumbered
-		|| (flag_dump_unnumbered_links && (i == 1 || i == 2)
+		|| (flag_dump_unnumbered_links && i <= 1
 		    && (INSN_P (in_rtx) || NOTE_P (in_rtx)
 			|| LABEL_P (in_rtx) || BARRIER_P (in_rtx))))
 	      fputs (" #", outfile);