2005-07-26  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/22486
	* fold-const.c (fold_unary): Fold away useless component
	references of the form (T *)&T.x, if the address
	doesn't change.

	* gcc.dg/tree-ssa/upcast-1.c: New testcase.

From-SVN: r102381