[Interpreter] Adds delete operator to interpreter.

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 142 matching lines @@
   BytecodeArrayBuilder& BinaryOperation(Token::Value binop, Register reg,
                                         Strength strength);
 
   // Count Operators (value stored in accumulator).
   BytecodeArrayBuilder& CountOperation(Token::Value op, Strength strength);
 
   // Unary Operators.
   BytecodeArrayBuilder& LogicalNot();
   BytecodeArrayBuilder& TypeOf();
 
+  // Deletes property from an object. This expects that accumulator contains
+  // the key to be deleted and the register contains a reference to the object.
+  BytecodeArrayBuilder& Delete(Register object, LanguageMode language_mode);
+
   // Tests.
   BytecodeArrayBuilder& CompareOperation(Token::Value op, Register reg,
                                          Strength strength);
 
   // Casts.
   BytecodeArrayBuilder& CastAccumulatorToBoolean();
   BytecodeArrayBuilder& CastAccumulatorToName();
   BytecodeArrayBuilder& CastAccumulatorToNumber();
 
   // Flow Control.
@@ skipping 26 matching lines @@
   static Bytecode BytecodeForBinaryOperation(Token::Value op);
   static Bytecode BytecodeForCountOperation(Token::Value op);
   static Bytecode BytecodeForCompareOperation(Token::Value op);
   static Bytecode BytecodeForLoadIC(LanguageMode language_mode);
   static Bytecode BytecodeForKeyedLoadIC(LanguageMode language_mode);
   static Bytecode BytecodeForStoreIC(LanguageMode language_mode);
   static Bytecode BytecodeForKeyedStoreIC(LanguageMode language_mode);
   static Bytecode BytecodeForLoadGlobal(LanguageMode language_mode);
   static Bytecode BytecodeForStoreGlobal(LanguageMode language_mode);
   static Bytecode BytecodeForCreateArguments(CreateArgumentsType type);
+  static Bytecode BytecodeForDelete(LanguageMode language_mode);
 
   static bool FitsInIdx8Operand(int value);
   static bool FitsInIdx8Operand(size_t value);
   static bool FitsInImm8Operand(int value);
   static bool FitsInIdx16Operand(int value);
 
   static Bytecode GetJumpWithConstantOperand(Bytecode jump_with_smi8_operand);
 
   template <size_t N>
   INLINE(void Output(Bytecode bytecode, uint32_t(&oprands)[N]));
@@ skipping 109 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(TemporaryRegisterScope);
 };
 
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_