Fix recently introduced error in expand_end_case.

From-SVN: r32511

gcc/ChangeLog

+2000-03-13  Bernd Schmidt  <bernds@cygnus.co.uk>
+
+	* stmt.c (expand_end_case): RANGE may be signed, and when checking
+	whether it is too large we must also verify that it isn't negative.
+
 2000-03-13  Jakub Jelinek  <jakub@redhat.com>
 
 	* config/sparc/sparc.md: Remove all traces of TARGET_LIVE_G0.

gcc/stmt.c

@@ -5402,6 +5402,9 @@ expand_end_case (orig_index)
 
       else if (count < CASE_VALUES_THRESHOLD
 	       || compare_tree_int (range, 10 * count) > 0
+	       /* RANGE may be signed, and really large ranges will show up
+		  as negative numbers.  */
+	       || compare_tree_int (range, 0) < 0
 #ifndef ASM_OUTPUT_ADDR_DIFF_ELT
 	       || flag_pic
 #endif