diff --git a/llvmlite/__module.vp b/llvmlite/__module.vp
index ffc4ab0..943da30 100644
--- a/llvmlite/__module.vp
+++ b/llvmlite/__module.vp
@@ -182,7 +182,8 @@ class LLVMModule:
             if cur.Ty is not None:
                 existing_name: str = get_struct_name(cur.Ty)
                 if existing_name is not None:
-                    if string.strcmp(existing_name, name) == 0:
+                    # 快速路径：strcmp 判等蕴含首字符相等，首字符不同者跳过 strcmp。
+                    if existing_name[0] == name[0] and string.strcmp(existing_name, name) == 0:
                         return 1
             cur = cur.Next
         return 0