[compiler] Sanitize entry points to LookupSlot access.

src/interpreter/interpreter.cc

 // 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.
 
 #include "src/interpreter/interpreter.h"
 
 #include "src/ast/prettyprinter.h"
 #include "src/code-factory.h"
 #include "src/compiler.h"
 #include "src/factory.h"
@@ skipping 449 matching lines @@
 // Stores the object in the accumulator into |slot_index| of |context|.
 void Interpreter::DoStaContextSlotWide(InterpreterAssembler* assembler) {
   DoStaContextSlot(assembler);
 }
 
 void Interpreter::DoLoadLookupSlot(Runtime::FunctionId function_id,
                                    InterpreterAssembler* assembler) {
   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();
 }
 
 
 // LdaLookupSlot <name_index>
 //
 // Lookup the object with the name in constant pool entry |name_index|
 // dynamically.
 void Interpreter::DoLdaLookupSlot(InterpreterAssembler* assembler) {
   DoLoadLookupSlot(Runtime::kLoadLookupSlot, assembler);
 }
 
 
 // LdaLookupSlotInsideTypeof <name_index>
 //
 // 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);
 }
 
 
 // LdaLookupSlotWide <name_index>
 //
 // Lookup the object with the name in constant pool entry |name_index|
 // dynamically.
 void Interpreter::DoLdaLookupSlotWide(InterpreterAssembler* assembler) {
   DoLdaLookupSlot(assembler);
 }
 
 
 // LdaLookupSlotInsideTypeofWide <name_index>
 //
 // Lookup the object with the name in constant pool entry |name_index|
 // dynamically without causing a NoReferenceError.
 void Interpreter::DoLdaLookupSlotInsideTypeofWide(
     InterpreterAssembler* assembler) {
   DoLdaLookupSlotInsideTypeof(assembler);
 }
 
 void Interpreter::DoStoreLookupSlot(LanguageMode language_mode,
                                     InterpreterAssembler* assembler) {
   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, 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();
 }
 
 
 // StaLookupSlotSloppy <name_index>
 //
 // Store the object in accumulator to the object with the name in constant
 // pool entry |name_index| in sloppy mode.
 void Interpreter::DoStaLookupSlotSloppy(InterpreterAssembler* assembler) {
@@ skipping 1356 matching lines @@
   Node* index = __ LoadRegister(index_reg);
   Node* context = __ GetContext();
   Node* result = __ CallRuntime(Runtime::kForInStep, context, index);
   __ SetAccumulator(result);
   __ Dispatch();
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8