From 434bcea98e264bf8359e5acd1cfece15a657bf5f Mon Sep 17 00:00:00 2001
From: CGH0S7 <776459475@qq.com>
Date: Mon, 28 Jul 2025 23:17:26 +0800
Subject: [PATCH] =?UTF-8?q?[PostRA=5FScheduler]=E4=BF=AE=E5=A4=8D=E4=BA=86?=
 =?UTF-8?q?=E8=B6=85=E5=A4=A7=E6=B5=8B=E4=BE=8B=E5=8D=A1=E6=AD=BB=E7=9A=84?=
 =?UTF-8?q?bug?=
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---
 src/PostRA_Scheduler.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/PostRA_Scheduler.cpp b/src/PostRA_Scheduler.cpp
index 5268a04..efc18dc 100644
--- a/src/PostRA_Scheduler.cpp
+++ b/src/PostRA_Scheduler.cpp
@@ -1,9 +1,9 @@
 #include "PostRA_Scheduler.h"
-#include <iostream>
 #include <set>
 #include <map>
 #include <vector>
 #include <algorithm>
+#define MAX_SCHEDULING_BLOCK_SIZE 10000 // 限制调度块大小，避免过大导致性能问题
 
 namespace sysy {
 
@@ -306,6 +306,9 @@ void validateSchedule(const std::vector<MachineInstr*>& instr_list) {
 void scheduleBlock(MachineBasicBlock* mbb) {
     auto& instructions = mbb->getInstructions();
     if (instructions.size() <= 1) return;
+    if (instructions.size() > MAX_SCHEDULING_BLOCK_SIZE) {
+      return; // 跳过超大块，防止卡住
+    }
     
     std::vector<MachineInstr*> instr_list;
     for (auto& instr : instructions) {