[Interpreter] Add BytecodeArray class and add to SharedFunctionInfo.

src/objects-printer.cc

Index: src/objects-printer.cc
diff --git a/src/objects-printer.cc b/src/objects-printer.cc
index 1dcc3d53948d13cd87f5770f06b04a0320f921ba..afbe945851ffa0b51e002afb43aff4224d50e5f0 100644
--- a/src/objects-printer.cc
+++ b/src/objects-printer.cc
@@ -7,6 +7,7 @@
 #include "src/disasm.h"
 #include "src/disassembler.h"
 #include "src/heap/objects-visiting.h"
+#include "src/interpreter/bytecodes.h"
 #include "src/jsregexp.h"
 #include "src/ostreams.h"
 
@@ -72,6 +73,9 @@ void HeapObject::HeapObjectPrint(std::ostream& os) {  // NOLINT
     case BYTE_ARRAY_TYPE:
       ByteArray::cast(this)->ByteArrayPrint(os);
       break;
+    case BYTECODE_ARRAY_TYPE:
+      BytecodeArray::cast(this)->BytecodeArrayPrint(os);
+      break;
     case FREE_SPACE_TYPE:
       FreeSpace::cast(this)->FreeSpacePrint(os);
       break;
@@ -201,6 +205,16 @@ void ByteArray::ByteArrayPrint(std::ostream& os) {  // NOLINT
 }
 
 
+void BytecodeArray::BytecodeArrayPrint(std::ostream& os) {  // NOLINT
+  os << "bytecode array, data starts at " << GetDataStartAddress();
+  for (int i = 0; i < this->length(); i++) {
+    byte bc = this->get(i);
+    os << "\n" << i << " : " << this->get(i) << " "
+       << static_cast<interpreter::Bytecode>(bc);

[rmcilroy, 2015/07/15 13:33:38]

How about we move this to a BytecodeArray::Dissassemble() function so it can be
used from elsewhere if necessary.

[oth, 2015/07/16 09:15:50]

Done.

+  }
+}
+
+
 void FreeSpace::FreeSpacePrint(std::ostream& os) {  // NOLINT
   os << "free space, size " << Size();
 }
@@ -766,6 +780,8 @@ void SharedFunctionInfo::SharedFunctionInfoPrint(std::ostream& os) {  // NOLINT
   os << "\n - optimized_code_map = " << Brief(optimized_code_map());
   os << "\n - feedback_vector = ";
   feedback_vector()->FixedArrayPrint(os);
+  // TODO(oth): implement real bytecode printer

[rmcilroy, 2015/07/15 13:33:38]

Actually I think emitting the pointer here is fine for the ShareFunctionInfo
object. I would remove the TODO. (someone can always call BytecodeArrayPrint on
the pointer to get the bytecode pretty-printed.

[oth, 2015/07/16 09:15:50]

Done.

+  os << "\n - bytecode_array = " << bytecode_array();
   os << "\n";
 }