PR middle-end/29256
	* tree-ssa-loop-ivopts.c (determine_base_object): Handle pointers
	casted to integer type.
	(get_address_cost): Decrease cost of [symbol + index] addressing modes
	if they are significantly more expensive than [reg + index] ones.

	* gcc.dg/tree-ssa/loop-19.c: New test.

From-SVN: r117513