syntax_data: {"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"ty::FnDef(func_id,"}]}
source_snippet:                     ty::FnDef(func_id, ..) => {
context_before:                 let (callee_features, safe_target_features): (&[_], _) = match fn_ty.kind() {
context_after:                         let cg_attrs = self.tcx.codegen_fn_attrs(func_id);