Fix implementation of bit count functions.

src/data-flow.h

Index: src/data-flow.h
diff --git a/src/data-flow.h b/src/data-flow.h
index 042e29f854b5d1a8f27000f40f0c6746088d547f..ad96c2cc5f0e3c0c5d014f6fe5c0f9e68d11ee41 100644
--- a/src/data-flow.h
+++ b/src/data-flow.h
@@ -164,14 +164,7 @@ class BitVector: public ZoneObject {
     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 Count() const;
 
   int length() const { return length_; }
 
@@ -185,6 +178,7 @@ class BitVector: public ZoneObject {
   uint32_t* data_;
 };
 
+
 class GrowableBitVector BASE_EMBEDDED {
  public:
   class Iterator BASE_EMBEDDED {
@@ -241,8 +235,7 @@ class GrowableBitVector BASE_EMBEDDED {
   BitVector* bits_;
 };
 
-
-} }  // namespace v8::internal
-
+}  // namespace internal
+}  // namespace v8
 
 #endif  // V8_DATAFLOW_H_