Add type propagation phase in optimizing compiler (work in progress).

runtime/vm/isolate.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_ISOLATE_H_
 #define VM_ISOLATE_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/class_table.h"
 #include "platform/thread.h"
 #include "vm/base_isolate.h"
 #include "vm/gc_callbacks.h"
 #include "vm/store_buffer.h"
 #include "vm/timer.h"
 
 namespace dart {
 
 // Forward declarations.
 class ApiState;
 class CodeIndexTable;
 class Debugger;
 class HandleScope;
 class HandleVisitor;
 class Heap;
+class ICData;
 class LongJump;
 class MessageHandler;
 class Mutex;
 class ObjectPointerVisitor;
 class ObjectStore;
 class RawArray;
 class RawContext;
 class RawError;
 class StackResource;
 class StubCode;
@@ skipping 136 matching lines @@
 
   uword spawn_data() const { return spawn_data_; }
   void set_spawn_data(uword value) { spawn_data_ = value; }
 
   // Deprecate.
   intptr_t ast_node_id() const { return ast_node_id_; }
   void set_ast_node_id(int value) { ast_node_id_ = value; }
 
   intptr_t computation_id() const { return computation_id_; }
   void set_computation_id(int value) { computation_id_ = value; }
+  intptr_t GetNextCid() { return computation_id_++; }
 
   RawArray* ic_data_array() const { return ic_data_array_; }
   void set_ic_data_array(RawArray* value) { ic_data_array_ = value; }
+  ICData* GetICDataForCid(intptr_t cid) const;
 
   Debugger* debugger() const { return debugger_; }
 
   GcPrologueCallbacks& gc_prologue_callbacks() {
     return gc_prologue_callbacks_;
   }
 
   GcEpilogueCallbacks& gc_epilogue_callbacks() {
     return gc_epilogue_callbacks_;
   }
@@ skipping 142 matching lines @@
   Isolate* new_isolate_;
   Isolate* saved_isolate_;
   uword saved_stack_limit_;
 
   DISALLOW_COPY_AND_ASSIGN(SwitchIsolateScope);
 };
 
 }  // namespace dart
 
 #endif  // VM_ISOLATE_H_