[Interpreter] Add support for Load / Store to Lookup slots.

src/interpreter/interpreter.cc

Index: src/interpreter/interpreter.cc
diff --git a/src/interpreter/interpreter.cc b/src/interpreter/interpreter.cc
index b1bd1976339f2c37e451cde252565d75c289d5d3..7ebd7e8e4fd7472018fe7253be9114a268473450 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -423,6 +423,77 @@ void Interpreter::DoStaContextSlot(compiler::InterpreterAssembler* assembler) {
 }
 
 
+// LdaLookupSlot <name_index> <context>
+//
+// Lookup the object with the name in constant pool entry |name_index|
+// dynamically.
+void Interpreter::DoLdaLookupSlot(compiler::InterpreterAssembler* assembler) {
+  Node* index = __ BytecodeOperandIdx(0);
+  Node* name = __ LoadConstantPoolEntry(index);
+  Node* reg_index = __ BytecodeOperandReg(1);
+  Node* context = __ LoadRegister(reg_index);
+  Node* result =
+      __ CallRuntime(Runtime::kInterpreterLoadLookupSlotCallee, context, name);
+  __ SetAccumulator(result);
+  __ Dispatch();
+}
+
+
+// LdaLookupSlotInsideTypeof <name_index> <context>
+//
+// Lookup the object with the name in constant pool entry |name_index|
+// dynamically without causing a NoReferenceError.
+void Interpreter::DoLdaLookupSlotInsideTypeof(
+    compiler::InterpreterAssembler* assembler) {
+  Node* index = __ BytecodeOperandIdx(0);
+  Node* name = __ LoadConstantPoolEntry(index);
+  Node* reg_index = __ BytecodeOperandReg(1);
+  Node* context = __ LoadRegister(reg_index);
+  Node* result = __ CallRuntime(
+      Runtime::kInterpreterLoadLookupSlotNoReferenceErrorValue, context, name);
+  __ SetAccumulator(result);
+  __ Dispatch();
+}
+
+
+// StaLookupSlotSloppy <name_index> <context>
+//
+// Store the object in accumulator to the object with the name in constant
+// pool entry |name_index| in sloppy mode.
+void Interpreter::DoStaLookupSlotSloppy(
+    compiler::InterpreterAssembler* assembler) {
+  Node* value = __ GetAccumulator();
+  Node* index = __ BytecodeOperandIdx(0);
+  Node* name = __ LoadConstantPoolEntry(index);
+  Node* reg_index = __ BytecodeOperandReg(1);
+  Node* context = __ LoadRegister(reg_index);
+  Node* language_mode = __ NumberConstant(LanguageMode::SLOPPY);
+  Node* result = __ CallRuntime(Runtime::kStoreLookupSlot, value, context, name,
+                                language_mode);
+  __ SetAccumulator(result);
+  __ Dispatch();
+}
+
+
+// StaLookupSlotStrict <name_index> <context>
+//
+// Store the object in accumulator to the object with the name in constant
+// pool entry |name_index| in strict mode.
+void Interpreter::DoStaLookupSlotStrict(
+    compiler::InterpreterAssembler* assembler) {
+  Node* value = __ GetAccumulator();
+  Node* index = __ BytecodeOperandIdx(0);
+  Node* name = __ LoadConstantPoolEntry(index);
+  Node* reg_index = __ BytecodeOperandReg(1);
+  Node* context = __ LoadRegister(reg_index);
+  Node* language_mode = __ NumberConstant(LanguageMode::STRICT);
+  Node* result = __ CallRuntime(Runtime::kStoreLookupSlot, value, context, name,
+                                language_mode);
+  __ SetAccumulator(result);
+  __ Dispatch();
+}
+
+
 void Interpreter::DoLoadIC(Callable ic,
                            compiler::InterpreterAssembler* assembler) {
   Node* code_target = __ HeapConstant(ic.code());