2009-02-10  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/39132
	* tree-loop-distribution.c (todo): New global var.
	(generate_memset_zero): Trigger TODO_rebuild_alias.
	(tree_loop_distribution): Return todo.

	* gcc.dg/torture/pr39132.c: New testcase.

From-SVN: r144060