[Interpreter] Add support for property load operations.

src/interpreter/bytecode-array-builder.h

Index: src/interpreter/bytecode-array-builder.h
diff --git a/src/interpreter/bytecode-array-builder.h b/src/interpreter/bytecode-array-builder.h
index 8a45c73bbbcbb4a7bd44ca05142c8ad63da08b4d..35c2a6bb8ef940ccfe06c8a0227df7c677a57d97 100644
--- a/src/interpreter/bytecode-array-builder.h
+++ b/src/interpreter/bytecode-array-builder.h
@@ -51,6 +51,12 @@ class BytecodeArrayBuilder {
   BytecodeArrayBuilder& LoadAccumulatorWithRegister(Register reg);
   BytecodeArrayBuilder& StoreAccumulatorInRegister(Register reg);
 
+  // Load properties. The object being accessed should be in the accumulator.
+  BytecodeArrayBuilder& LoadNamedProperty(Register name, int feedback_slot,
+                                          LanguageMode language_mode);
+  BytecodeArrayBuilder& LoadKeyedProperty(Register key, int feedback_slot,
+                                          LanguageMode language_mode);
+
   // Operators.
   BytecodeArrayBuilder& BinaryOperation(Token::Value binop, Register reg);
 
@@ -62,6 +68,8 @@ class BytecodeArrayBuilder {
       -InterpreterFrameConstants::kLastParamFromRegisterPointer / kPointerSize;
 
   static Bytecode BytecodeForBinaryOperation(Token::Value op);
+  template <typename T>
+  static bool FitsByteOperand(T value);
 
   void Output(Bytecode bytecode, uint8_t r0, uint8_t r1, uint8_t r2);
   void Output(Bytecode bytecode, uint8_t r0, uint8_t r1);