diff --git a/src/midend/Pass/Optimize/LoopStrengthReduction.cpp b/src/midend/Pass/Optimize/LoopStrengthReduction.cpp
index fc306c1..d7e3448 100644
--- a/src/midend/Pass/Optimize/LoopStrengthReduction.cpp
+++ b/src/midend/Pass/Optimize/LoopStrengthReduction.cpp
@@ -614,12 +614,9 @@ bool StrengthReductionContext::createNewInductionVariable(StrengthReductionCandi
     return false;
   }
 
-  // 1. 在循环头创建新的 phi 指令
-  builder->setPosition(header, header->begin());
-  candidate->newPhi = builder->createPhiInst(originalPhi->getType());
-  candidate->newPhi->setName(originalPhi->getName() + "_sr");
+  
 
-  // 2. 找到原始归纳变量的初始值和步长
+  // 1. 找到原始归纳变量的初始值和步长
   Value* initialValue = nullptr;
   Value* stepValue = nullptr;
   BasicBlock* latchBlock = nullptr;
@@ -651,6 +648,11 @@ bool StrengthReductionContext::createNewInductionVariable(StrengthReductionCandi
     return false;
   }
 
+  // 2. 在循环头创建新的 phi 指令
+  builder->setPosition(header, header->begin());
+  candidate->newPhi = builder->createPhiInst(originalPhi->getType());
+  candidate->newPhi->setName(originalPhi->getName() + "_sr");
+
   // 3. 计算新归纳变量的初始值和步长
   // 新IV的初始值 = 原IV初始值 * multiplier
   Value* newInitialValue;