Use a different map to distinguish eval contexts

src/compiler/js-operator.cc

Index: src/compiler/js-operator.cc
diff --git a/src/compiler/js-operator.cc b/src/compiler/js-operator.cc
index 0e1d0023812177ade43e8e584ac6c200bdb933eb..c897d7b23d646736c9e671fba471b9b3cffb5198 100644
--- a/src/compiler/js-operator.cc
+++ b/src/compiler/js-operator.cc
@@ -860,6 +860,14 @@ const Operator* JSOperatorBuilder::CreateFunctionContext(int slot_count) {
       slot_count);                                                  // parameter
 }
 
+const Operator* JSOperatorBuilder::CreateEvalContext(int slot_count) {
+  return new (zone()) Operator1<int>(                           // --
+      IrOpcode::kJSCreateEvalContext, Operator::kNoProperties,  // opcode
+      "JSCreateEvalContext",                                    // name
+      1, 1, 1, 1, 1, 2,                                         // counts
+      slot_count);                                              // parameter
+}
+
 const Operator* JSOperatorBuilder::CreateCatchContext(
     const Handle<String>& name, const Handle<ScopeInfo>& scope_info) {
   CreateCatchContextParameters parameters(name, scope_info);