[compiler] Sanitize entry points to LookupSlot access.

src/interpreter/interpreter.cc

Index: src/interpreter/interpreter.cc
diff --git a/src/interpreter/interpreter.cc b/src/interpreter/interpreter.cc
index 775fbca5e56ceb7e30e1e5959233e0b870cac095..b5c79b515178f2cd7738199321b5cdc494c76c0b 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -467,8 +467,7 @@ void Interpreter::DoLoadLookupSlot(Runtime::FunctionId function_id,
   Node* index = __ BytecodeOperandIdx(0);
   Node* name = __ LoadConstantPoolEntry(index);
   Node* context = __ GetContext();
-  Node* result_pair = __ CallRuntime(function_id, context, context, name);
-  Node* result = __ Projection(0, result_pair);
+  Node* result = __ CallRuntime(function_id, context, name);
   __ SetAccumulator(result);
   __ Dispatch();
 }
@@ -488,7 +487,7 @@ void Interpreter::DoLdaLookupSlot(InterpreterAssembler* assembler) {
 // Lookup the object with the name in constant pool entry |name_index|
 // dynamically without causing a NoReferenceError.
 void Interpreter::DoLdaLookupSlotInsideTypeof(InterpreterAssembler* assembler) {
-  DoLoadLookupSlot(Runtime::kLoadLookupSlotNoReferenceError, assembler);
+  DoLoadLookupSlot(Runtime::kLoadLookupSlotInsideTypeof, assembler);
 }
 
 
@@ -516,9 +515,10 @@ void Interpreter::DoStoreLookupSlot(LanguageMode language_mode,
   Node* index = __ BytecodeOperandIdx(0);
   Node* name = __ LoadConstantPoolEntry(index);
   Node* context = __ GetContext();
-  Node* language_mode_node = __ NumberConstant(language_mode);
-  Node* result = __ CallRuntime(Runtime::kStoreLookupSlot, context, value,
-                                context, name, language_mode_node);
+  Node* result = __ CallRuntime(is_strict(language_mode)
+                                    ? Runtime::kStoreLookupSlot_Strict
+                                    : Runtime::kStoreLookupSlot_Sloppy,
+                                context, name, value);
   __ SetAccumulator(result);
   __ Dispatch();
 }