From 7feb56d5f6690726abb93decc84d84e5477adbcb Mon Sep 17 00:00:00 2001
From: cui <cuiweixie@gmail.com>
Date: Sat, 24 Jan 2026 19:30:34 +0800
Subject: [PATCH] feat: prealloc vec (#21391)

---
 crates/evm/evm/src/execute.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/crates/evm/evm/src/execute.rs b/crates/evm/evm/src/execute.rs
index 540f86692d..00010db95c 100644
--- a/crates/evm/evm/src/execute.rs
+++ b/crates/evm/evm/src/execute.rs
@@ -75,9 +75,11 @@ pub trait Executor<DB: Database>: Sized {
     where
         I: IntoIterator<Item = &'a RecoveredBlock<<Self::Primitives as NodePrimitives>::Block>>,
     {
-        let mut results = Vec::new();
+        let blocks_iter = blocks.into_iter();
+        let capacity = blocks_iter.size_hint().0;
+        let mut results = Vec::with_capacity(capacity);
         let mut first_block = None;
-        for block in blocks {
+        for block in blocks_iter {
             if first_block.is_none() {
                 first_block = Some(block.header().number());
             }