[Interpreter] Add support for cast operators to bytecode graph builder and

src/interpreter/bytecode-array-builder.h

 // Copyright 2015 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.
 
 #ifndef V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_
 #define V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_
 
 #include <vector>
 
 #include "src/ast.h"
@@ skipping 61 matching lines @@
   size_t GetConstantPoolEntry(Handle<Object> object);
 
   // Constant loads to accumulator.
   BytecodeArrayBuilder& LoadLiteral(v8::internal::Smi* value);
   BytecodeArrayBuilder& LoadLiteral(Handle<Object> object);
   BytecodeArrayBuilder& LoadUndefined();
   BytecodeArrayBuilder& LoadNull();
   BytecodeArrayBuilder& LoadTheHole();
   BytecodeArrayBuilder& LoadTrue();
   BytecodeArrayBuilder& LoadFalse();
+  BytecodeArrayBuilder& LoadBooleanConstant(bool value);
 
   // Global loads to the accumulator and stores from the accumulator.
   BytecodeArrayBuilder& LoadGlobal(size_t name_index, int feedback_slot,
                                    LanguageMode language_mode,
                                    TypeofMode typeof_mode);
   BytecodeArrayBuilder& StoreGlobal(size_t name_index, int feedback_slot,
                                     LanguageMode language_mode);
 
   // Load the object at |slot_index| in |context| into the accumulator.
   BytecodeArrayBuilder& LoadContextSlot(Register context, int slot_index);
@@ skipping 186 matching lines @@
   IdentityMap<size_t> constants_map_;
   ZoneVector<Handle<Object>> constants_;
 
   int parameter_count_;
   int local_register_count_;
   int context_register_count_;
   int temporary_register_count_;
 
   ZoneSet<int> free_temporaries_;
 
+  class PreviousBytecodeHelper;
   friend class TemporaryRegisterScope;
   DISALLOW_COPY_AND_ASSIGN(BytecodeArrayBuilder);
 };
 
 
 // A label representing a branch target in a bytecode array. When a
 // label is bound, it represents a known position in the bytecode
 // array. For labels that are forward references there can be at most
 // one reference whilst it is unbound.
 class BytecodeLabel final {
@@ skipping 58 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(TemporaryRegisterScope);
 };
 
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_