From c48088a723c035900a8b98ae5c9c4d165934d0a5 Mon Sep 17 00:00:00 2001
From: Weixie Cui <cuiweixie@gmail.com>
Date: Sat, 2 May 2026 22:44:39 +0800
Subject: [PATCH] core/vm: opt memoryGasCost

---
 core/vm/gas_table.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/vm/gas_table.go b/core/vm/gas_table.go
index 046311f9cc..afcc05da17 100644
--- a/core/vm/gas_table.go
+++ b/core/vm/gas_table.go
@@ -38,7 +38,7 @@ func memoryGasCost(mem *Memory, newMemSize uint64) (uint64, error) {
 	if newMemSize > 0x1FFFFFFFE0 {
 		return 0, ErrGasUintOverflow
 	}
-	newMemSizeWords := toWordSize(newMemSize)
+	newMemSizeWords := (newMemSize + 31) / 32
 	newMemSize = newMemSizeWords * 32
 
 	if newMemSize > uint64(mem.Len()) {