Optimize AOT's switchable calls for the monomorphic case.

runtime/vm/unit_test.h

 // 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.
 
 #ifndef VM_UNIT_TEST_H_
 #define VM_UNIT_TEST_H_
 
 #include "include/dart_native_api.h"
 
 #include "platform/globals.h"
@@ skipping 362 matching lines @@
         code_(Code::ZoneHandle()) {
     ASSERT(name != NULL);
     ASSERT(assembler != NULL);
   }
   ~AssemblerTest() { }
 
   Assembler* assembler() const { return assembler_; }
 
   const Code& code() const { return code_; }
 
-  uword entry() const { return code_.EntryPoint(); }
+  uword payload_start() const { return code_.PayloadStart(); }
+  uword entry() const { return code_.UncheckedEntryPoint(); }
 
   // Invoke/InvokeWithCodeAndThread is used to call assembler test functions
   // using the ABI calling convention.
   // ResultType is the return type of the assembler test function.
   // ArgNType is the type of the Nth argument.
 #if defined(USING_SIMULATOR) && !defined(TARGET_ARCH_DBC)
 
 #if defined(ARCH_IS_64_BIT)
   // TODO(fschneider): Make InvokeWithCodeAndThread<> more general and work on
   // 32-bit.
@@ skipping 218 matching lines @@
   }
 
  private:
   T* flag_;
   T original_value_;
 };
 
 }  // namespace dart
 
 #endif  // VM_UNIT_TEST_H_