Optimize AOT's switchable calls for the monomorphic case.

runtime/vm/code_patcher.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.
 // Class for patching compiled code.
 
 #ifndef VM_CODE_PATCHER_H_
 #define VM_CODE_PATCHER_H_
 
 #include "vm/allocation.h"
 #include "vm/native_entry.h"
@@ skipping 57 matching lines @@
 
   static intptr_t InstanceCallSizeInBytes();
 
   static void InsertDeoptimizationCallAt(uword start, uword target);
 
   static void PatchPoolPointerCallAt(uword return_address,
                                      const Code& code,
                                      const Code& new_target);
 
   static void PatchSwitchableCallAt(uword return_address,
-                                    const Code& code,
-                                    const ICData& ic_data,
-                                    const MegamorphicCache& new_cache,
-                                    const Code& lookup_stub);
+                                    const Code& caller_code,
+                                    const Object& data,
+                                    const Code& target);
+  static RawObject* GetSwitchableCallDataAt(uword return_address,
+                                            const Code& caller_code);
+  static RawCode* GetSwitchableCallTargetAt(uword return_address,
+                                            const Code& caller_code);
 
   static RawCode* GetNativeCallAt(uword return_address,
                                   const Code& code,
                                   NativeFunction* target);
 
   static void PatchNativeCallAt(uword return_address,
                                 const Code& code,
                                 NativeFunction target,
                                 const Code& trampoline);
 };
 
 }  // namespace dart
 
 #endif  // VM_CODE_PATCHER_H_