Use a different map to distinguish eval contexts

src/interpreter/interpreter.cc

Index: src/interpreter/interpreter.cc
diff --git a/src/interpreter/interpreter.cc b/src/interpreter/interpreter.cc
index d1fb8bc5ad5383770886f8a4f3985cb324a20cdd..2d3d5598a4278dd9df7dda71837e39acc40faa8f 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -2415,8 +2415,20 @@ void Interpreter::DoCreateFunctionContext(InterpreterAssembler* assembler) {
   Node* closure = __ LoadRegister(Register::function_closure());
   Node* slots = __ BytecodeOperandUImm(0);
   Node* context = __ GetContext();
-  __ SetAccumulator(
-      FastNewFunctionContextStub::Generate(assembler, closure, slots, context));
+  __ SetAccumulator(FastNewFunctionContextStub::Generate(
+      assembler, closure, slots, context, FUNCTION_SCOPE));
+  __ Dispatch();
+}
+
+// CreateEvalContext <slots>
+//
+// Creates a new context with number of |slots| for an eval closure.
+void Interpreter::DoCreateEvalContext(InterpreterAssembler* assembler) {
+  Node* closure = __ LoadRegister(Register::function_closure());
+  Node* slots = __ BytecodeOperandUImm(0);
+  Node* context = __ GetContext();
+  __ SetAccumulator(FastNewFunctionContextStub::Generate(
+      assembler, closure, slots, context, EVAL_SCOPE));
   __ Dispatch();
 }