* dwarf2out.c (add_const_value_attribute): Return true if successful.

	* dwarf2out.c (add_const_value_attribute): Return true if successful.
	(add_location_or_const_value_attribute): Rewrite using loc_list_from_tree.
	(tree_add_const_value_attribute): Return true if successful.
	(tree_add_const_value_attribute_for_decl): Likewise.

	* dwarf2out.c (address_of_int_loc_descriptor): Break out from ...
	(loc_descriptor): ... here;
	(loc_list_for_address_of_addr_expr_of_indirect_ref): New function.
	(cst_pool_loc_descr): Break out from ...; do not reffer constant
	pool items that was not marked for output.
	(loc_list_from_tree): ... here; handle special cases of ADDR_EXPR;
	(loc_list_for_address_of_addr_expr_of_indirect_ref): New function.
	(loc_list_for_address_of_addr_expr_of_indirect_ref): New function.
	handle ALIGN_INDIRECT_REF, MISALIGNED_INDIRECT_REF, REALPART_EXPR,
	IMAGPART_EXPR; handle address of INTEGER_CST; improve handling of
	CONSTRUCTOR; handle REAL_CST, STRING_CST, COMPLEX_CST; use
	DW_OP_stack_value to get address of items that are not available
	as addresses.
	(dw_loc_list): Handle single element lists correctly.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@151901 138bc75d-0d04-0410-961f-82ee72b054a4