WIP: adding test::decode_and_run_single_insn

crates/cpu/src/rename_execute_retire.rs

@@ -217,7 +217,6 @@ pub struct UnitMOpCantCauseCancel<C: PhantomConstGet<CpuConfig>> {
 pub struct ExecuteToUnitInterface<C: PhantomConstGet<CpuConfig>> {
     pub global_state: GlobalState,
     /// Enqueues happen in program order, they are not re-ordered by out-of-order execution.
-    /// if [`Self::unit_outputs_ready`] is `false`, then `enqueue.data` is always [`HdlNone`].
     pub enqueue: ReadyValid<UnitEnqueue<C>>,
     /// if [`Self::unit_outputs_ready`] is `false`, then this is always [`HdlNone`]
     pub inputs_ready: HdlOption<UnitInputsReady<C>>,