tree.h (build_int_cstu): Implement as static inline.

	* tree.h (build_int_cstu): Implement as static inline.
	* tree.c (build_int_cstu): Remove function.
	(double_int_to_tree, double_int_fits_to_tree_p): Handle size types as
	sign extended.

From-SVN: r159544

gcc/ChangeLog

+2010-05-18  Anatoly Sokolov  <aesok@post.ru>
+
+	* tree.h (build_int_cstu): Implement as static inline.
+	* tree.c (build_int_cstu): Remove function.
+	(double_int_to_tree, double_int_fits_to_tree_p): Handle size types as
+	sign extended.
+
 2010-05-18  Richard Guenther  <rguenther@suse.de>
 
 	PR lto/44143

gcc/tree.c

@@ -1041,14 +1041,6 @@ build_int_cst (tree type, HOST_WIDE_INT low)
   return build_int_cst_wide (type, low, low < 0 ? -1 : 0);
 }
 
-/* Create an INT_CST node with a LOW value zero extended.  */
-
-tree
-build_int_cstu (tree type, unsigned HOST_WIDE_INT low)
-{
-  return build_int_cst_wide (type, low, 0);
-}
-
 /* Create an INT_CST node with a LOW value in TYPE.  The value is sign extended
    if it is negative.  This function is similar to build_int_cst, but
    the extra bits outside of the type precision are cleared.  Constants
@@ -1088,7 +1080,12 @@ build_int_cst_wide_type (tree type,
 tree
 double_int_to_tree (tree type, double_int cst)
 {
-  cst = double_int_ext (cst, TYPE_PRECISION (type), TYPE_UNSIGNED (type));
+  /* Size types *are* sign extended.  */
+  bool sign_extended_type = (!TYPE_UNSIGNED (type)
+			     || (TREE_CODE (type) == INTEGER_TYPE
+				 && TYPE_IS_SIZETYPE (type)));
+
+  cst = double_int_ext (cst, TYPE_PRECISION (type), !sign_extended_type);
 
   return build_int_cst_wide (type, cst.low, cst.high);
 }
@@ -1099,9 +1096,13 @@ double_int_to_tree (tree type, double_int cst)
 bool
 double_int_fits_to_tree_p (const_tree type, double_int cst)
 {
-  double_int ext = double_int_ext (cst,
-				   TYPE_PRECISION (type),
-				   TYPE_UNSIGNED (type));
+  /* Size types *are* sign extended.  */
+  bool sign_extended_type = (!TYPE_UNSIGNED (type)
+			     || (TREE_CODE (type) == INTEGER_TYPE
+				 && TYPE_IS_SIZETYPE (type)));
+
+  double_int ext
+    = double_int_ext (cst, TYPE_PRECISION (type), !sign_extended_type);
 
   return double_int_equal_p (cst, ext);
 }

gcc/tree.h

@@ -4001,9 +4001,16 @@ tree_to_double_int (const_tree cst)
 extern tree double_int_to_tree (tree, double_int);
 extern bool double_int_fits_to_tree_p (const_tree, double_int);
 
+/* Create an INT_CST node with a CST value zero extended.  */
+
+static inline tree
+build_int_cstu (tree type, unsigned HOST_WIDE_INT cst)
+{
+  return double_int_to_tree (type, uhwi_to_double_int (cst));
+}
+
 extern tree build_int_cst (tree, HOST_WIDE_INT);
 extern tree build_int_cst_type (tree, HOST_WIDE_INT);
-extern tree build_int_cstu (tree, unsigned HOST_WIDE_INT);
 extern tree build_int_cst_wide (tree, unsigned HOST_WIDE_INT, HOST_WIDE_INT);
 extern tree build_int_cst_wide_type (tree,
 				     unsigned HOST_WIDE_INT, HOST_WIDE_INT);