2006-01-05 Richard Guenther <rguenther@suse.de>

	PR tree-optimization/22555
	* tree-ssa-alias.c (create_overlap_variables_for): Do not give up,
	if one structure field is an array.
	* tree-ssa-operands.c (get_expr_operands): Continue scanning
	operands even if we found a subvar, but ignore VOPs in this
	case.
	* tree-ssa-loop-ivopts.c (rewrite_use): Mark new vars in stmt
	for renaming.
	* tree-ssa-loop.c (pass_iv_optimize): Schedule TODO_update_ssa.

	* gcc.dg/tree-ssa/alias-3.c: New testcase.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@109381 138bc75d-0d04-0410-961f-82ee72b054a4