--- gcc/gcc/tree-ssa.c	1 Jun 2005 02:51:05 -0000	2.95
+++ gcc/gcc/tree-ssa.c	6 Jun 2005 00:53:39 -0000
@@ -901,7 +901,9 @@ tree_ssa_useless_type_conversion_1 (tree
   else if (INTEGRAL_TYPE_P (inner_type)
            && INTEGRAL_TYPE_P (outer_type)
 	   && TYPE_UNSIGNED (inner_type) == TYPE_UNSIGNED (outer_type)
-	   && TYPE_PRECISION (inner_type) == TYPE_PRECISION (outer_type))
+	   && TYPE_PRECISION (inner_type) == TYPE_PRECISION (outer_type)
+	   && simple_cst_equal (TYPE_MAX_VALUE (inner_type), TYPE_MAX_VALUE (outer_type))
+	   && simple_cst_equal (TYPE_MIN_VALUE (inner_type), TYPE_MIN_VALUE (outer_type)))
     {
       bool first_boolean = (TREE_CODE (inner_type) == BOOLEAN_TYPE);
       bool second_boolean = (TREE_CODE (outer_type) == BOOLEAN_TYPE);