From 1615806e1d33691a8a2712c4ddb1c2589b1ac3e2 Mon Sep 17 00:00:00 2001
From: nk_ysg <nk_ysg@163.com>
Date: Sat, 31 Jan 2026 14:38:22 +0800
Subject: [PATCH] perf(state): avoid unnecessary clone, prealloc, and fix typo

---
 crates/state/src/bal/account.rs | 19 +++++++++++--------
 crates/state/src/lib.rs         |  2 +-
 2 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/crates/state/src/bal/account.rs b/crates/state/src/bal/account.rs
index 6ca4b7458a..a442bc94ed 100644
--- a/crates/state/src/bal/account.rs
+++ b/crates/state/src/bal/account.rs
@@ -96,8 +96,9 @@ impl AccountBal {
     /// Consumes AccountBal and converts it into [`AlloyAccountChanges`].
     #[inline]
     pub fn into_alloy_account(self, address: Address) -> AlloyAccountChanges {
-        let mut storage_reads = Vec::new();
-        let mut storage_changes = Vec::new();
+        let storage_len = self.storage.storage.len();
+        let mut storage_reads = Vec::with_capacity(storage_len);
+        let mut storage_changes = Vec::with_capacity(storage_len);
         for (key, value) in self.storage.storage {
             if value.writes.is_empty() {
                 storage_reads.push(key);
@@ -180,12 +181,14 @@ impl AccountInfoBal {
         self.nonce.update(index, &original.nonce, present.nonce);
         self.balance
             .update(index, &original.balance, present.balance);
-        self.code.update_with_key(
-            index,
-            &original.code_hash,
-            (present.code_hash, present.code.clone().unwrap_or_default()),
-            |i| &i.0,
-        );
+        if original.code_hash != present.code_hash {
+            self.code.update_with_key(
+                index,
+                &original.code_hash,
+                (present.code_hash, present.code.clone().unwrap_or_default()),
+                |i| &i.0,
+            );
+        }
     }
 
     /// Extend account info from another account info.
diff --git a/crates/state/src/lib.rs b/crates/state/src/lib.rs
index f857b36688..79571d72c8 100644
--- a/crates/state/src/lib.rs
+++ b/crates/state/src/lib.rs
@@ -39,7 +39,7 @@ pub struct Account {
     pub info: AccountInfo,
     /// Original account info used by BAL, changed only on cold load by BAL.
     pub original_info: Box<AccountInfo>,
-    /// Transaction id, used to track when account was toched/loaded into journal.
+    /// Transaction id, used to track when account was touched/loaded into journal.
     pub transaction_id: usize,
     /// Storage cache
     pub storage: EvmStorage,