call.c (null_ptr_cst_p): Replace use of TREE_CONSTANT_OVERFLOW with TREE_OVERFLOW.

	* call.c (null_ptr_cst_p): Replace use of TREE_CONSTANT_OVERFLOW with
	TREE_OVERFLOW.
	* typeck.c (ignore_overflows): Remove the remaining uses of
	TREE_CONSTANT_OVERFLOW.

From-SVN: r121084

gcc/cp/ChangeLog

+2007-01-23  Roger Sayle  <roger@eyesopen.com>
+
+	* call.c (null_ptr_cst_p): Replace use of TREE_CONSTANT_OVERFLOW with
+	TREE_OVERFLOW.
+	* typeck.c (ignore_overflows): Remove the remaining uses of
+	TREE_CONSTANT_OVERFLOW.
+
 2007-01-20  Jan Hubicka  <jh@suse.cz>
 
 	* decl2.c (start_objects, start_static_storage_duration_function):

gcc/cp/call.c

 /* Functions related to invoking methods and overloaded functions.
    Copyright (C) 1987, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+   Free Software Foundation, Inc.
    Contributed by Michael Tiemann (tiemann@cygnus.com) and
    modified by Brendan Kehoe (brendan@cygnus.com).
 
@@ -432,7 +433,7 @@ null_ptr_cst_p (tree t)
   if (CP_INTEGRAL_TYPE_P (TREE_TYPE (t)) && integer_zerop (t))
     {
       STRIP_NOPS (t);
-      if (!TREE_CONSTANT_OVERFLOW (t))
+      if (!TREE_OVERFLOW (t))
 	return true;
     }
   return false;

gcc/cp/typeck.c

@@ -4898,8 +4898,8 @@ convert_ptrmem (tree type, tree expr, bool allow_inverse_p,
 }
 
 /* If EXPR is an INTEGER_CST and ORIG is an arithmetic constant, return
-   a version of EXPR that has TREE_OVERFLOW and/or TREE_CONSTANT_OVERFLOW
-   set iff they are set in ORIG.  Otherwise, return EXPR unchanged.  */
+   a version of EXPR that has TREE_OVERFLOW set if it is set in ORIG.
+   Otherwise, return EXPR unchanged.  */
 
 static tree
 ignore_overflows (tree expr, tree orig)
@@ -4907,11 +4907,9 @@ ignore_overflows (tree expr, tree orig)
   if (TREE_CODE (expr) == INTEGER_CST
       && CONSTANT_CLASS_P (orig)
       && TREE_CODE (orig) != STRING_CST
-      && (TREE_OVERFLOW (expr) != TREE_OVERFLOW (orig)
-	  || TREE_CONSTANT_OVERFLOW (expr)
-	     != TREE_CONSTANT_OVERFLOW (orig)))
+      && TREE_OVERFLOW (expr) != TREE_OVERFLOW (orig))
     {
-      if (!TREE_OVERFLOW (orig) && !TREE_CONSTANT_OVERFLOW (orig))
+      if (!TREE_OVERFLOW (orig))
 	/* Ensure constant sharing.  */
 	expr = build_int_cst_wide (TREE_TYPE (expr),
 				   TREE_INT_CST_LOW (expr),
@@ -4921,8 +4919,6 @@ ignore_overflows (tree expr, tree orig)
 	  /* Avoid clobbering a shared constant.  */
 	  expr = copy_node (expr);
 	  TREE_OVERFLOW (expr) = TREE_OVERFLOW (orig);
-	  TREE_CONSTANT_OVERFLOW (expr)
-	    = TREE_CONSTANT_OVERFLOW (orig);
 	}
     }
   return expr;