Use a different map to distinguish eval contexts

src/compiler/js-generic-lowering.cc

 // Copyright 2014 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/compiler/js-generic-lowering.h"
 
 #include "src/ast/ast.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/compiler/common-operator.h"
@@ skipping 333 matching lines @@
     ReplaceWithStubCall(node, callable, flags);
   } else {
     ReplaceWithRuntimeCall(node, (p.pretenure() == TENURED)
                                      ? Runtime::kNewClosure_Tenured
                                      : Runtime::kNewClosure);
   }
 }
 
 
 void JSGenericLowering::LowerJSCreateFunctionContext(Node* node) {
-  int const slot_count = OpParameter<int>(node->op());
+  const CreateFunctionContextParameters& parameters =
+      CreateFunctionContextParametersOf(node->op());
+  int slot_count = parameters.slot_count();
+  ScopeType scope_type = parameters.scope_type();
   CallDescriptor::Flags flags = FrameStateFlagForCall(node);
 
-  if (slot_count <= FastNewFunctionContextStub::kMaximumSlots) {
-    Callable callable = CodeFactory::FastNewFunctionContext(isolate());
+  if (slot_count <= FastNewFunctionContextStub::MaximumSlots()) {
+    Callable callable =
+        CodeFactory::FastNewFunctionContext(isolate(), scope_type);
     node->InsertInput(zone(), 1, jsgraph()->Int32Constant(slot_count));
     ReplaceWithStubCall(node, callable, flags);
   } else {
+    node->InsertInput(zone(), 1, jsgraph()->SmiConstant(scope_type));
     ReplaceWithRuntimeCall(node, Runtime::kNewFunctionContext);
   }
 }
 
 
 void JSGenericLowering::LowerJSCreateIterResultObject(Node* node) {
   ReplaceWithRuntimeCall(node, Runtime::kCreateIterResultObject);
 }
 
 void JSGenericLowering::LowerJSCreateKeyValueArray(Node* node) {
@@ skipping 244 matching lines @@
 }
 
 
 MachineOperatorBuilder* JSGenericLowering::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8