[interpreter] Support for ES6 class literals.

test/unittests/interpreter/bytecode-array-builder-unittest.cc

 // Copyright 2014 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.
 
 #include "src/v8.h"
 
 #include "src/interpreter/bytecode-array-builder.h"
 #include "src/interpreter/bytecode-array-iterator.h"
 #include "src/interpreter/bytecode-register-allocator.h"
 #include "test/unittests/test-utils.h"
@@ skipping 37 matching lines @@
   Register wide(128);
 
   builder.LoadAccumulatorWithRegister(reg)
       .LoadNull()
       .StoreAccumulatorInRegister(reg);
 
   // Emit register-register transfer.
   builder.MoveRegister(reg, other);
   builder.MoveRegister(reg, wide);
 
+  // Prototype info for classes.
+  builder.LoadPrototypeOrInitialMap();
+
   // Emit global load / store operations.
   Factory* factory = isolate()->factory();
   Handle<String> name = factory->NewStringFromStaticChars("var_name");
   builder.LoadGlobal(name, 1, LanguageMode::SLOPPY,
                      TypeofMode::NOT_INSIDE_TYPEOF)
       .LoadGlobal(name, 1, LanguageMode::STRICT, TypeofMode::NOT_INSIDE_TYPEOF)
       .LoadGlobal(name, 1, LanguageMode::SLOPPY, TypeofMode::INSIDE_TYPEOF)
       .LoadGlobal(name, 1, LanguageMode::STRICT, TypeofMode::INSIDE_TYPEOF)
       .StoreGlobal(name, 1, LanguageMode::SLOPPY)
       .StoreGlobal(name, 1, LanguageMode::STRICT);
@@ skipping 588 matching lines @@
     iterator.Advance();
   }
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kReturn);
   iterator.Advance();
   CHECK(iterator.done());
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8