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 81aecafecfdfbba9b465c7f54b6f1b685f6bf5e7..73c362138d507a910f1b475756ce5af6d4ca12c4 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -2264,6 +2264,18 @@ void Interpreter::DoCreateFunctionContext(InterpreterAssembler* assembler) {
   __ 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(
+      FastNewEvalContextStub::Generate(assembler, closure, slots, context));
+  __ Dispatch();
+}
+
 // CreateWithContext <register> <scope_info_idx>
 //
 // Creates a new context with the ScopeInfo at |scope_info_idx| for a