Find right scope associated with prologue

src/compiler/ast-graph-builder.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/ast-graph-builder.h"
 
 #include "src/compiler.h"
 #include "src/compiler/ast-loop-assignment-analyzer.h"
 #include "src/compiler/control-builders.h"
 #include "src/compiler/js-type-feedback.h"
@@ skipping 440 matching lines @@
       frame_state_function_info_(common()->CreateFrameStateFunctionInfo(
           FrameStateType::kJavaScriptFunction, info->num_parameters() + 1,
           info->scope()->num_stack_slots(), info->shared_info(),
           CALL_MAINTAINS_NATIVE_CONTEXT)),
       js_type_feedback_(js_type_feedback) {
   InitializeAstVisitor(info->isolate(), local_zone);
 }
 
 
 Node* AstGraphBuilder::GetFunctionClosureForContext() {
-  Scope* declaration_scope = current_scope()->DeclarationScope();
-  if (declaration_scope->is_script_scope() ||
-      declaration_scope->is_module_scope()) {
+  Scope* closure_scope = current_scope()->ClosureScope();
+  if (closure_scope->is_script_scope() ||
+      closure_scope->is_module_scope()) {
     // Contexts nested in the native context have a canonical empty function as
     // their closure, not the anonymous closure containing the global code.
     // Pass a SMI sentinel and let the runtime look up the empty function.
     return jsgraph()->SmiConstant(0);
   } else {
-    DCHECK(declaration_scope->is_function_scope());
+    DCHECK(closure_scope->is_function_scope());
     return GetFunctionClosure();
   }
 }
 
 
 Node* AstGraphBuilder::GetFunctionClosure() {
   if (!function_closure_.is_set()) {
     const Operator* op = common()->Parameter(
         Linkage::kJSFunctionCallClosureParamIndex, "%closure");
     Node* node = NewNode(op, graph()->start());
@@ skipping 3832 matching lines @@
     // Phi does not exist yet, introduce one.
     value = NewPhi(inputs, value, control);
     value->ReplaceInput(inputs - 1, other);
   }
   return value;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8