add gate count metrics (#238)

* add gate count metrics

* tweak params

* move metrics to its own file

src/backends/plonky2/mainpod/mod.rs

@@ -623,9 +623,12 @@ pub mod tests {
         let params = middleware::Params {
             // Currently the circuit uses random access that only supports vectors of length 64.
             // With max_input_main_pods=3 we need random access to a vector of length 73.
-            max_input_main_pods: 1,
+            max_input_main_pods: 0,
+            max_custom_predicate_batches: 0,
+            max_custom_predicate_verifications: 0,
             ..Default::default()
         };
+        println!("{:#?}", params);
 
         let (gov_id_builder, pay_stub_builder, sanction_list_builder) =
             zu_kyc_sign_pod_builders(&params);
@@ -640,6 +643,7 @@ pub mod tests {
 
         let mut prover = Prover {};
         let kyc_pod = kyc_builder.prove(&mut prover, &params)?;
+        crate::measure_gates_print!();
         let pod = (kyc_pod.pod as Box<dyn Any>).downcast::<MainPod>().unwrap();
 
         Ok(pod.verify()?)
@@ -741,6 +745,7 @@ pub mod tests {
             max_custom_predicate_verifications: 8,
             ..Default::default()
         };
+        println!("{:#?}", params);
 
         let mut alice = Signer(SecretKey(RawValue::from(1)));
         let bob = Signer(SecretKey(RawValue::from(2)));
@@ -768,6 +773,7 @@ pub mod tests {
 
         let mut prover = Prover {};
         let alice_bob_ethdos = alice_bob_ethdos_builder.prove(&mut prover, &params)?;
+        crate::measure_gates_print!();
         let pod = (alice_bob_ethdos.pod as Box<dyn Any>)
             .downcast::<MainPod>()
             .unwrap();
@@ -790,6 +796,7 @@ pub mod tests {
             max_custom_predicate_verifications: 2,
             ..Default::default()
         };
+        println!("{:#?}", params);
 
         let mut cpb_builder = CustomPredicateBatchBuilder::new(params.clone(), "cpb".into());
         let stb0 = STB::new(NP::ValueOf)
@@ -824,6 +831,7 @@ pub mod tests {
 
         let mut prover = Prover {};
         let pod = pod_builder.prove(&mut prover, &params)?;
+        crate::measure_gates_print!();
 
         let pod = (pod.pod as Box<dyn Any>).downcast::<MainPod>().unwrap();