tree-object-size.c (pass_through_call): Handle BUILT_IN_ASSUME_ALIGNED.

	* tree-object-size.c (pass_through_call): Handle
	BUILT_IN_ASSUME_ALIGNED.

From-SVN: r175768

gcc/ChangeLog

+2011-07-01  Jakub Jelinek  <jakub@redhat.com>
+
+	* tree-object-size.c (pass_through_call): Handle
+	BUILT_IN_ASSUME_ALIGNED.
+
 2011-07-01  Martin Jambor  <mjambor@suse.cz>
 
 	* tree-sra.c (tree_non_mode_aligned_mem_p): Also ignore MEM_REFs.

gcc/tree-object-size.c

 /* __builtin_object_size (ptr, object_size_type) computation
-   Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010
+   Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
    Free Software Foundation, Inc.
    Contributed by Jakub Jelinek <jakub@redhat.com>
 
@@ -464,6 +464,7 @@ pass_through_call (const_gimple call)
       case BUILT_IN_STRNCPY_CHK:
       case BUILT_IN_STRCAT_CHK:
       case BUILT_IN_STRNCAT_CHK:
+      case BUILT_IN_ASSUME_ALIGNED:
 	if (gimple_call_num_args (call) >= 1)
 	  return gimple_call_arg (call, 0);
 	break;