* alias.c (get_alias_set): Remove handling of PLACEHOLDER_EXPR.
	* emit-rtl.c (component_ref_for_mem_expr): Likewise.
	(set_mem_attributes_minus_bitpos): Call SUBSTITUTE_PLACEHOLDER_IN_EXPR.
	* explow.c (expr_size): Likewise.
	* expr.h (placeholder_list, find_placeholder): Deleted.
	* expr.c (store_constructor): Likewise.
	(get_inner_reference): Likewise.  Also don't call find_placeholder.
	(placeholder_list, find_placeholder): Deleted.
	(is_aligning_offset): Don't handle WITH_RECORD_EXPR, PLACEHOLDER_EXPR.
	(expand_expr_real, cases PLACEHOLDER_EXPR, WITH_RECORD_EXPR): Likewise.
	(highest_pow2_factor, case WITH_RECORD_EXPR): Remove.
	* dojump.c (do_jump, case WITH_RECORD_EXPR): Likewise.
	* dwarf2out.c (loc_descriptor_from_tree, case WITH_RECORD_EXPR):
	Likewise.
	* fold-const.c (invert_truthvalue, case WITH_RECORD_EXPR): Likewise.
	(extract_muldiv, case WITH_RECORD_EXPR): Likewise.
	* tree.c (expr_align, case WITH_RECORD_EXPR): Likewise.
	(contains_placeholder_p): Don't handle WITH_RECORD_EXPR.
	Clean up by using first_rtl_op.
	(substitute_in_expr): Use SUBSTITUTE_IN_EXPR for recursive call.
	(substitute_placeholder_in_expr): New function.
	* tree.def (WITH_RECORD_EXPR): Deleted.
	* tree.h (SUBSTITUTE_IN_EXPR, SUBSTITUTE_PLACEHOLDER_IN_EXPR): New.
	(substitute_placeholder_in_expr): New.

	* ada/decl.c (gnat_to_gnu_entity): Use SUBSTITUTE_PLACEHOLDER_IN_EXPR.
	* ada/trans.c (tree_transform, emit_index_check): Likewise.
	* ada/utils.c (build_template): Likewise.
	(max_size, convert): Remove handling of WITH_RECORD_EXPR.
	(maybe_unconstrained_array, unchecked_convert): Likewise.
	* ada/utils2.c (gnat_truthvalue_conversion, build_binary_op): Likewise.
	(build_unary_op): Likewise.
	(compare_arrays, build_allocator): Use SUBSTITUTE_PLACEHOLDER_IN_EXPR.
	(fill_vms_descriptor): Likewise.
	(build_call_alloc_dealloc): Likewise.
	ALIGN is unsigned.
	* ada/gigi.h (build_call_alloc_dealloc): Alignment is unsigned.

From-SVN: r79789