[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 a4e5d99838d8f686ff165def79b4740373259d9f..0601082467238b301cb51a81a14b1c0300192aed 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -470,9 +470,7 @@ void Interpreter::DoLoadLookupSlot(Runtime::FunctionId function_id,
                                    compiler::InterpreterAssembler* assembler) {
   Node* index = __ BytecodeOperandIdx(0);
   Node* name = __ LoadConstantPoolEntry(index);
-  Node* context = __ GetContext();
-  Node* result_pair = __ CallRuntime(function_id, context, name);
-  Node* result = __ Projection(0, result_pair);
+  Node* result = __ CallRuntime(function_id, name);
   __ SetAccumulator(result);
   __ Dispatch();
 }
@@ -493,7 +491,7 @@ void Interpreter::DoLdaLookupSlot(compiler::InterpreterAssembler* assembler) {
 // dynamically without causing a NoReferenceError.
 void Interpreter::DoLdaLookupSlotInsideTypeof(
     compiler::InterpreterAssembler* assembler) {
-  DoLoadLookupSlot(Runtime::kLoadLookupSlotNoReferenceError, assembler);
+  DoLoadLookupSlot(Runtime::kLoadLookupSlotInsideTypeof, assembler);
 }
 
 
@@ -522,10 +520,10 @@ void Interpreter::DoStoreLookupSlot(LanguageMode language_mode,
   Node* value = __ GetAccumulator();
   Node* index = __ BytecodeOperandIdx(0);
   Node* name = __ LoadConstantPoolEntry(index);
-  Node* context = __ GetContext();
-  Node* language_mode_node = __ NumberConstant(language_mode);
-  Node* result = __ CallRuntime(Runtime::kStoreLookupSlot, value, context, name,
-                                language_mode_node);
+  Node* result = __ CallRuntime(is_strict(language_mode)
+                                    ? Runtime::kStoreLookupSlot_Strict
+                                    : Runtime::kStoreLookupSlot_Sloppy,
+                                name, value);
   __ SetAccumulator(result);
   __ Dispatch();
 }