expmed.c (make_tree): Sign extend even if TREE_UNSIGNED...

	* expmed.c (make_tree) [CONST_INT]: Sign extend even if
	TREE_UNSIGNED, when bitsize of type's mode is larger than
	HOST_BITS_PER_WIDE_INT.

From-SVN: r21904

gcc/ChangeLog

@@ -3,6 +3,10 @@ Fri Aug 21 23:07:46 1998  David S. Miller  <davem@pierdol.cobaltmicro.com>
 	* config/sparc/sparc.md (TFmode splits): Handle destination
 	registers being referenced in the address correctly.
 
+	* expmed.c (make_tree) [CONST_INT]: Sign extend even if
+	TREE_UNSIGNED, when bitsize of type's mode is larger than
+	HOST_BITS_PER_WIDE_INT.
+
 Fri Aug 21 19:31:31 1998  Alexandre Petit-Bianco <apbianco@cygnus.com>
 
 	* tree.def (LABELED_BLOCK_EXPR, EXIT_BLOCK_EXPR): New tree nodes.

gcc/expmed.c

@@ -3767,7 +3767,9 @@ make_tree (type, x)
     {
     case CONST_INT:
       t = build_int_2 (INTVAL (x),
-		       TREE_UNSIGNED (type) || INTVAL (x) >= 0 ? 0 : -1);
+		       (TREE_UNSIGNED (type)
+			&& (GET_MODE_BITSIZE (TYPE_MODE (type)) < HOST_BITS_PER_WIDE_INT))
+		       || INTVAL (x) >= 0 ? 0 : -1);
       TREE_TYPE (t) = type;
       return t;