Emit source positions in deopt comments, too.

src/hydrogen-instructions.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_HYDROGEN_INSTRUCTIONS_H_
 #define V8_HYDROGEN_INSTRUCTIONS_H_
 
 #include "src/v8.h"
 
 #include "src/allocation.h"
@@ skipping 437 matching lines @@
   }
 
   int raw() const { return value_; }
 
  private:
   typedef BitField<int, 0, 9> InliningIdField;
 
   // Offset from the start of the inlined function.
   typedef BitField<int, 9, 23> PositionField;
 
-  // On HPositionInfo can use this constructor.
   explicit HSourcePosition(int value) : value_(value) { }
 
   friend class HPositionInfo;
+  friend class LCodeGenBase;
 
   // If FLAG_hydrogen_track_positions is set contains bitfields InliningIdField
   // and PositionField.
   // Otherwise contains absolute offset from the script start.
   int value_;
 };
 
 
 OStream& operator<<(OStream& os, const HSourcePosition& p);
 
@@ skipping 7423 matching lines @@
 };
 
 
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_INSTRUCTIONS_H_