Use a different map to distinguish eval contexts

src/compiler/bytecode-graph-builder.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/compiler/bytecode-graph-builder.h"
 
 #include "src/ast/ast.h"
 #include "src/ast/scopes.h"
 #include "src/compilation-info.h"
 #include "src/compiler/compiler-source-position-table.h"
@@ skipping 1109 matching lines @@
   Handle<ScopeInfo> scope_info = Handle<ScopeInfo>::cast(
       bytecode_iterator().GetConstantForIndexOperand(0));
 
   const Operator* op = javascript()->CreateBlockContext(scope_info);
   Node* context = NewNode(op, environment()->LookupAccumulator());
   environment()->BindAccumulator(context);
 }
 
 void BytecodeGraphBuilder::VisitCreateFunctionContext() {
   uint32_t slots = bytecode_iterator().GetUnsignedImmediateOperand(0);
-  const Operator* op = javascript()->CreateFunctionContext(slots);
+  const Operator* op =
+      javascript()->CreateFunctionContext(slots, FUNCTION_SCOPE);
   Node* context = NewNode(op, GetFunctionClosure());
   environment()->BindAccumulator(context);
 }
+
+void BytecodeGraphBuilder::VisitCreateEvalContext() {
+  uint32_t slots = bytecode_iterator().GetUnsignedImmediateOperand(0);
+  const Operator* op = javascript()->CreateFunctionContext(slots, EVAL_SCOPE);
+  Node* context = NewNode(op, GetFunctionClosure());
+  environment()->BindAccumulator(context);
+}
 
 void BytecodeGraphBuilder::VisitCreateCatchContext() {
   interpreter::Register reg = bytecode_iterator().GetRegisterOperand(0);
   Node* exception = environment()->LookupRegister(reg);
   Handle<String> name =
       Handle<String>::cast(bytecode_iterator().GetConstantForIndexOperand(1));
   Handle<ScopeInfo> scope_info = Handle<ScopeInfo>::cast(
       bytecode_iterator().GetConstantForIndexOperand(2));
   Node* closure = environment()->LookupAccumulator();
 
@@ skipping 1092 matching lines @@
         it->source_position().ScriptOffset(), start_position_.InliningId()));
     it->Advance();
   } else {
     DCHECK_GT(it->code_offset(), offset);
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8