range-op.cc (range_tests): Avoid two tests when ints and shorts are the same size.

	* range-op.cc (range_tests): Avoid two tests when ints and
	shorts are the same size.

From-SVN: r276581

gcc/ChangeLog

+2019-10-04  Jeff Law  <law@redhat.com>
+
+	* range-op.cc (range_tests): Avoid two tests when ints and
+	shorts are the same size.
+
 2019-10-04  Richard Biener  <rguenther@suse.de>
 
 	PR lto/91968

gcc/range-op.cc

@@ -2910,10 +2910,14 @@ range_tests ()
 
   // If a range is in any way outside of the range for the converted
   // to range, default to the range for the new type.
+  if (TYPE_PRECISION (TREE_TYPE (maxint))
+      > TYPE_PRECISION (short_integer_type_node))
+    {
       r1 = value_range_base (integer_zero_node, maxint);
       range_cast (r1, short_integer_type_node);
       ASSERT_TRUE (r1.lower_bound () == wi::to_wide (minshort)
 		   && r1.upper_bound() == wi::to_wide (maxshort));
+    }
 
   // (unsigned char)[-5,-1] => [251,255].
   r0 = rold = value_range_base (SCHAR (-5), SCHAR (-1));
@@ -3020,11 +3024,15 @@ range_tests ()
   // "NOT 0 at signed 32-bits" ==> [-MIN_32,-1][1, +MAX_32].  This is
   // is outside of the range of a smaller range, return the full
   // smaller range.
+  if (TYPE_PRECISION (integer_type_node)
+      > TYPE_PRECISION (short_integer_type_node))
+    {
       r0 = range_nonzero (integer_type_node);
       range_cast (r0, short_integer_type_node);
       r1 = value_range_base (TYPE_MIN_VALUE (short_integer_type_node),
 			     TYPE_MAX_VALUE (short_integer_type_node));
       ASSERT_TRUE (r0 == r1);
+    }
 
   // Casting NONZERO from a narrower signed to a wider signed.
   //