[interpreter] Print bytecode offsets when dumping bytecode.

src/objects.cc

 // Copyright 2015 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.
 
 #include "src/objects.h"
 
 #include <cmath>
 #include <iomanip>
 #include <sstream>
 
@@ skipping 14552 matching lines @@
       }
     }
     iterator.Advance();
   }
   return statement_position;
 }
 
 void BytecodeArray::Disassemble(std::ostream& os) {
   os << "Parameter count " << parameter_count() << "\n";
   os << "Frame size " << frame_size() << "\n";
-  Vector<char> buf = Vector<char>::New(50);
 
   const uint8_t* base_address = GetFirstBytecodeAddress();
   interpreter::SourcePositionTableIterator source_positions(
       source_position_table());
 
   interpreter::BytecodeArrayIterator iterator(handle(this));
   while (!iterator.done()) {
     if (!source_positions.done() &&
         iterator.current_offset() == source_positions.bytecode_offset()) {
       os << std::setw(5) << source_positions.source_position();
       os << (source_positions.is_statement() ? " S> " : " E> ");
       source_positions.Advance();
     } else {
       os << "         ";
     }
     const uint8_t* current_address = base_address + iterator.current_offset();
-    SNPrintF(buf, "%p", current_address);
-    os << buf.start() << " : ";
+    os << reinterpret_cast<const void*>(current_address) << " @ "
+       << std::setw(4) << iterator.current_offset() << " : ";
     interpreter::Bytecodes::Decode(os, current_address, parameter_count());
     if (interpreter::Bytecodes::IsJump(iterator.current_bytecode())) {
-      SNPrintF(buf, " (%p)", base_address + iterator.GetJumpTargetOffset());
-      os << buf.start();
+      const void* jump_target = base_address + iterator.GetJumpTargetOffset();
+      os << " (" << jump_target << " @ " << iterator.GetJumpTargetOffset()
+         << ")";
     }
     os << std::endl;
     iterator.Advance();
   }
 
   if (constant_pool()->length() > 0) {
     os << "Constant pool (size = " << constant_pool()->length() << ")\n";
     constant_pool()->Print();
   }
 
@@ skipping 4710 matching lines @@
   if (cell->value() != *new_value) {
     cell->set_value(*new_value);
     Isolate* isolate = cell->GetIsolate();
     cell->dependent_code()->DeoptimizeDependentCodeGroup(
         isolate, DependentCode::kPropertyCellChangedGroup);
   }
 }
 
 }  // namespace internal
 }  // namespace v8