diff --git a/Editor/Emit/BasicBlockCollection.cs b/Editor/Emit/BasicBlockCollection.cs
index 5c0c3b0..2dda874 100644
--- a/Editor/Emit/BasicBlockCollection.cs
+++ b/Editor/Emit/BasicBlockCollection.cs
@@ -38,13 +38,20 @@ namespace Obfuz.Emit
 
         public IList<BasicBlock> Blocks => _blocks;
 
-        public BasicBlockCollection(MethodDef method)
+        public BasicBlockCollection(MethodDef method, bool computeInLoop)
         {
             _method = method;
             HashSet<Instruction> splitPoints = BuildSplitPoint(method);
             BuildBasicBlocks(method, splitPoints);
             BuildInOutGraph(method);
+            if (computeInLoop)
+            {
+                ComputeBlocksInLoop();
+            }
+        }
 
+        public void ComputeBlocksInLoop()
+        {
             var loopBlocks = FindLoopBlocks(_blocks);
             foreach (var block in loopBlocks)
             {
diff --git a/Editor/ObfusPasses/BasicBlockObfuscationPassBase.cs b/Editor/ObfusPasses/BasicBlockObfuscationPassBase.cs
index ce98a33..3ce89ee 100644
--- a/Editor/ObfusPasses/BasicBlockObfuscationPassBase.cs
+++ b/Editor/ObfusPasses/BasicBlockObfuscationPassBase.cs
@@ -10,6 +10,8 @@ namespace Obfuz.ObfusPasses
     {
         protected abstract bool NeedObfuscateMethod(MethodDef method);
 
+        protected virtual bool ComputeBlockInLoop => true;
+
         public override void Process()
         {
             var ctx = ObfuscationPassContext.Current;
@@ -48,7 +50,7 @@ namespace Obfuz.ObfusPasses
 
         private void ObfuscateData(MethodDef method)
         {
-            BasicBlockCollection bbc = new BasicBlockCollection(method);
+            BasicBlockCollection bbc = new BasicBlockCollection(method, ComputeBlockInLoop);
 
             IList<Instruction> instructions = method.Body.Instructions;