From 267e9881b41d00ffc07c0ac96d1713dbd97eab4f Mon Sep 17 00:00:00 2001
From: TermiNexus <wyt18222152539wyt@163.com>
Date: Wed, 19 Aug 2026 00:32:21 +0800
Subject: [PATCH] =?UTF-8?q?perf(structgen):=20finalize=20=E7=89=B9?=
 =?UTF-8?q?=E6=AE=8A=E5=AD=97=E7=AC=A6=20struct=20=E5=90=8D=E5=8A=A0?=
 =?UTF-8?q?=E5=BC=95=E5=8F=B7=E5=90=88=E5=B9=B6=E4=B8=BA=E5=8D=95=E6=AC=A1?=
 =?UTF-8?q?=20re.sub?=
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逐 name 全文本 re.sub 改为单正则 alternation 一次扫描，消除 N 次 O(text) 扫描（lookahead 边界保证备选互斥，语义等价）
---
 lib/core/LLVMCG/StructGen.py | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/lib/core/LLVMCG/StructGen.py b/lib/core/LLVMCG/StructGen.py
index 865045f..97e994a 100644
--- a/lib/core/LLVMCG/StructGen.py
+++ b/lib/core/LLVMCG/StructGen.py
@@ -202,13 +202,16 @@ class StructGenMixin:
                 insert_pos = header_end
             struct_block: str = '\n'.join(struct_defs) + '\n'
             ir_text = ir_text[:insert_pos + 1] + struct_block + ir_text[insert_pos + 1:]
-        for name in struct_names:
-            if name[0].isdigit() or '.' in name:
-                ir_text = re.sub(
-                    r'%' + re.escape(name) + r'(?=[^a-zA-Z0-9_$\.]|$)',
-                    r'%"' + name + r'"',
-                    ir_text
-                )
+        # 仅含特殊字符（数字开头或含点）的 struct 名需要加引号：
+        # 合并为单个正则一次扫描全文本，替代逐 name 各自 re.sub（每个 name
+        # 一次 O(text) 扫描）。lookahead 边界排除保证各备选互斥，语义等价。
+        special_names: list[str] = [n for n in struct_names if n[0].isdigit() or '.' in n]
+        if special_names:
+            ir_text = re.sub(
+                r'%(' + '|'.join(re.escape(n) for n in special_names) + r')(?=[^a-zA-Z0-9_$\.]|$)',
+                lambda m: r'%"' + m.group(1) + r'"',
+                ir_text
+            )
 
         return ir_text