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src/data-flow.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_DATAFLOW_H_
 #define V8_DATAFLOW_H_
 
 #include "src/v8.h"
 
 #include "src/allocation.h"
@@ skipping 146 matching lines @@
     return true;
   }
 
   bool Equals(const BitVector& other) {
     for (int i = 0; i < data_length_; i++) {
       if (data_[i] != other.data_[i]) return false;
     }
     return true;
   }
 
+  int Count() const {
+    int count = 0;
+    for (int i = 0; i < data_length_; i++) {
+      int data = data_[i];
+      if (data != 0) count += CompilerIntrinsics::CountSetBits(data);
+    }
+    return count;
+  }
+
   int length() const { return length_; }
 
 #ifdef DEBUG
   void Print();
 #endif
 
  private:
   int length_;
   int data_length_;
   uint32_t* data_;
@@ skipping 53 matching lines @@
   }
 
   BitVector* bits_;
 };
 
 
 } }  // namespace v8::internal
 
 
 #endif  // V8_DATAFLOW_H_