{"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"assert_assignable(fx,"}]}
        assert_assignable(fx, from.layout().ty, self.layout().ty, 16);
    pub(crate) fn write_cvalue(self, fx: &mut FunctionCx<'_, '_, 'tcx>, from: CValue<'tcx>) {