re PR middle-end/42559 (ice in emit_block_move_hints with -O2)

2010-01-01  Richard Guenther  <rguenther@suse.de>

	PR middle-end/42559
	* builtins.c (get_object_alignment): Do not use DECL_ALIGN
	for LABEL_DECLs.

	* gcc.c-torture/compile/pr42559.c: New testcase.

From-SVN: r155554