Implement new inline cache.

vm/ic_stubs.h

Index: vm/ic_stubs.h
===================================================================
--- vm/ic_stubs.h	(revision 700)
+++ vm/ic_stubs.h	(working copy)
@@ -1,70 +0,0 @@
-// Copyright (c) 2011, 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.
-// Class for handling inline cache stubs
-//
-// The initial target of an instance call is the resolving and patching runtime
-// function 'ResolvePatchInstanceCall'. It resolves and compiles the
-// target function and patches the instance call to jump to it
-// via an inline cache stub.
-// The inline cache stub checks receiver's class for a distinct set of classes
-// and jumps to the appropriate target.
-// An inline-cache-miss occurs if none of the classes match. As a consequence
-// the old IC stub is replaced with a new one that adds the class check
-// and target for the most recently seen receiver.
-
-#ifndef VM_IC_STUBS_H_
-#define VM_IC_STUBS_H_
-
-#include "vm/allocation.h"
-#include "vm/growable_array.h"
-
-namespace dart {
-
-// Forward declarations.
-class Class;
-class Code;
-class Function;
-class RawCode;
-
-class ICStubs : public AllStatic {
- public:
-  // Returns an IC stub that jumps to targets' entry points if the receiver
-  // matches a class contained in 'classes' array.
-  static RawCode* GetICStub(const GrowableArray<const Class*>& classes,
-                            const GrowableArray<const Function*>& targets);
-
-  // Identify classes and their targets contained in the IC stub.
-  // 'ic_entry_point' is the start of the IC stubs. 'classes' and 'targets'
-  // are the implemented (class, target) tuples.
-  // Returns false if the entry_point does not point to an IC stub.
-  static bool RecognizeICStub(uword ic_entry_point,
-                              GrowableArray<const Class*>* classes,
-                              GrowableArray<const Function*>* targets);
-
-  // Replace all 'from' targets with 'to' targets.
-  static void PatchTargets(uword ic_entry_point, uword from, uword to);
-
-  // Locate a class within the array. Return -1 if class object in 'cls'
-  // is not in the array.
-  // TODO(srdjan): Remove from ICStubs interface.
-  static int IndexOfClass(const GrowableArray<const Class*>& classes,
-                          const Class& cls);
-
- private:
-  static RawCode* FindInCode(const Code& target,
-                             const GrowableArray<const Class*>& classes);
-  static void AppendICStubToTargets(
-      const GrowableArray<const Function*>& targets,
-      const GrowableArray<const Class*>& classes,
-      const Code& ic_stub);
-  static bool ParseICStub(uword ic_entry_point,
-                          GrowableArray<const Class*>* classes,
-                          GrowableArray<const Function*>* targets,
-                          uword from,
-                          uword to);
-};
-
-}  // namespace dart
-
-#endif  // VM_IC_STUBS_H_