* cp-tree.h (struct lang_decl_inlined_fns): New.
	(struct lang_decls): Add inlined_fns.
	(DECL_INLINED_FNS): New macro.
	* optimize.c (struct inline_data): Add inlined_fns.
	(declare_return_variable): Use VARRAY_ACTIVE_SIZE macro.
	(inlinable_function_p): Likewise, fix typo in comment,
	function is not inlinable if it already inlined function currently
	being optimized.
	(expand_call_inline): Add fn to inlined_fns if neccessary.
	(optimize_function): Initialize inlined_fns.
	Save inlined_fns into DECL_INLINED_FNS after expanding inlines.
	* decl.c (mark_inlined_fns): New function.
	(lang_mark_tree): Call it.

	* g++.old-deja/g++.other/inline20.C: New test.

From-SVN: r39977