tree-ssa.c (useless_type_conversion_p_1): Make function and array type comparisons frontend independent.

2009-08-06  Richard Guenther  <rguenther@suse.de>

	* tree-ssa.c (useless_type_conversion_p_1): Make function and
	array type comparisons frontend independent.
	* Makefile.in (tree-ssa.o): Add $(TARGET_H) dependency.
	* tree-ssa-sccvn.c (copy_reference_ops_from_ref): Always fill
	out array reference lower bound and element size operands.
	(ao_ref_init_from_vn_reference): Properly compute the offset
	for ARRAY_RANGE_REF.
	(vn_reference_fold_indirect): Fill out array reference lower
	bound and element size operands.
	* tree-ssa-pre.c (phi_translate_1): Fail if we have to translate
	a non gimple valued reference operand which can happen for
	array reference lower bound or element size.
	(create_component_ref_by_pieces_1): Properly generate the
	element size operand for array references.

From-SVN: r150519