tree-sra.c (create_access_replacement): Only rename the replacement if we can rewrite it into SSA form.

2012-03-12  Richard Guenther  <rguenther@suse.de>

        * tree-sra.c (create_access_replacement): Only rename the
        replacement if we can rewrite it into SSA form.  Properly
        mark register typed replacements that we cannot rewrite
        with TREE_ADDRESSABLE.
	* tree-cfg.c (verify_expr): Fix BIT_FIELD_REF verification
	for aggregate or BLKmode results.

From-SVN: r185221