* ipa-inline-analysis.c (compute_inline_parameters): Be more reailistic
	on estimating thunk bodies; do not set inline_failed to CIF_THUNK for
	calls from thunk.
	* ipa-inline-transform.c (inline_call): When inlining into thunk produce
	gimple body.
	(preserve_function_body_p): No need to preserve function body
	* cif-codes.def (CIF_THUNK): Remove.
	* cgraphclones.c (duplicate_thunk_for_node): Thunks calls are inlinable.

	* g++.dg/ipa/ivinline-7.C: Do not xfail.
	* g++.dg/ipa/ivinline-9.C: Do not xfail.

From-SVN: r236274