builtins.c (expand_builtin_stpcpy): Un-simplify decay of stpcpy to strcpy.

* builtins.c (expand_builtin_stpcpy): Un-simplify decay of stpcpy
to strcpy.

From-SVN: r84301

gcc/ChangeLog

 2004-07-08  Alexandre Oliva  <aoliva@redhat.com>
 
+	* builtins.c (expand_builtin_stpcpy): Un-simplify decay of stpcpy
+	to strcpy.
+
 	* expr.h (FUNCTION_ARG_PARTIAL_NREGS): Default to 0.
 	(FUNCTION_ARG_PASS_BY_REFERENCE): Likewise.
 	(FUNCTION_ARG_CALLEE_COPIES): Likewise.

gcc/builtins.c

@@ -3090,7 +3090,14 @@ expand_builtin_stpcpy (tree arglist, rtx target, enum machine_mode mode)
 {
   /* If return value is ignored, transform stpcpy into strcpy.  */
   if (target == const0_rtx)
-    return expand_builtin_strcpy (arglist, target, mode);
+    {
+      tree fn = implicit_built_in_decls[BUILT_IN_STRCPY];
+      if (!fn)
+	return 0;
+
+      return expand_expr (build_function_call_expr (fn, arglist),
+			  target, mode, EXPAND_NORMAL);
+    }
 
   if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
     return 0;