Use a different map to distinguish eval contexts

src/compiler/bytecode-graph-builder.cc

Index: src/compiler/bytecode-graph-builder.cc
diff --git a/src/compiler/bytecode-graph-builder.cc b/src/compiler/bytecode-graph-builder.cc
index 401a1cfa9bb3f4c58134c319ff86516658163d54..b45a52e03a9da2007aed2248699f6a428208a5f6 100644
--- a/src/compiler/bytecode-graph-builder.cc
+++ b/src/compiler/bytecode-graph-builder.cc
@@ -1146,6 +1146,14 @@ void BytecodeGraphBuilder::VisitCreateFunctionContext() {
   environment()->BindAccumulator(context);
 }
 
+void BytecodeGraphBuilder::VisitCreateEvalContext() {
+  uint32_t slots = bytecode_iterator().GetUnsignedImmediateOperand(0);
+  // TODO(littledan): Make an eval context, not a function context
+  const Operator* op = javascript()->CreateFunctionContext(slots);
+  Node* context = NewNode(op, GetFunctionClosure());
+  environment()->BindAccumulator(context);
+}
+
 void BytecodeGraphBuilder::VisitCreateCatchContext() {
   interpreter::Register reg = bytecode_iterator().GetRegisterOperand(0);
   Node* exception = environment()->LookupRegister(reg);