perf(db): reduce different repeated allocations (#2103)

bin/reth/src/lib.rs

@@ -32,4 +32,5 @@ enum StageEnum {
     Execution,
     Hashing,
     Merkle,
+    TxLookup,
 }

bin/reth/src/stage/mod.rs

@@ -16,7 +16,7 @@ use reth_staged_sync::{
     Config,
 };
 use reth_stages::{
-    stages::{BodyStage, ExecutionStage, SenderRecoveryStage},
+    stages::{BodyStage, ExecutionStage, SenderRecoveryStage, TransactionLookupStage},
     ExecInput, Stage, StageId, UnwindInput,
 };
 use std::{net::SocketAddr, sync::Arc};
@@ -181,6 +181,16 @@ impl Command {
                 }
                 stage.execute(&mut tx, input).await?;
             }
+            StageEnum::TxLookup => {
+                let mut stage = TransactionLookupStage::new(num_blocks);
+
+                // Unwind first
+                if !self.skip_unwind {
+                    stage.unwind(&mut tx, unwind).await?;
+                }
+
+                stage.execute(&mut tx, input).await?;
+            }
             _ => {}
         }