[interpreter] Add basic framework for bytecode handler code generation.

src/isolate.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_ISOLATE_H_
 #define V8_ISOLATE_H_
 
 #include <queue>
 #include <set>
 
@@ skipping 70 matching lines @@
 // assembler.h, where it is defined, here.
 typedef void* ExternalReferenceRedirectorPointer();
 
 
 class Debug;
 class Debugger;
 class PromiseOnStack;
 class Redirection;
 class Simulator;
 
+namespace interpreter {
+class Interpreter;
+}
 
 // Static indirection table for handles to constants.  If a frame
 // element represents a constant, the data contains an index into
 // this table of handles to the actual constants.
 // Static indirection table for handles to constants.  If a Result
 // represents a constant, the data contains an index into this table
 // of handles to the actual constants.
 typedef ZoneList<Handle<Object> > ZoneObjectList;
 
 #define RETURN_FAILURE_IF_SCHEDULED_EXCEPTION(isolate)    \
@@ skipping 1218 matching lines @@
   // A static array of histogram info for each type.
   HistogramInfo heap_histograms_[LAST_TYPE + 1];
   JSObject::SpillInformation js_spill_information_;
 #endif
 
   Debug* debug_;
   CpuProfiler* cpu_profiler_;
   HeapProfiler* heap_profiler_;
   FunctionEntryHook function_entry_hook_;
 
+  interpreter::Interpreter* interpreter_;
+
   typedef std::pair<InterruptCallback, void*> InterruptEntry;
   std::queue<InterruptEntry> api_interrupts_queue_;
 
 #define GLOBAL_BACKING_STORE(type, name, initialvalue)                         \
   type name##_;
   ISOLATE_INIT_LIST(GLOBAL_BACKING_STORE)
 #undef GLOBAL_BACKING_STORE
 
 #define GLOBAL_ARRAY_BACKING_STORE(type, name, length)                         \
   type name##_[length];
@@ skipping 258 matching lines @@
   }
 
   EmbeddedVector<char, 128> filename_;
   FILE* file_;
   int scope_depth_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ISOLATE_H_