[Interpreter] Optimize equality check with null/undefined with a check on the map.

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 609ad80c42da4cd6b7aad97379f566f4be0fd64e..6549168c7d8cf394ef21eb2d6657069b676fb08b 100644
--- a/src/compiler/bytecode-graph-builder.cc
+++ b/src/compiler/bytecode-graph-builder.cc
@@ -1636,6 +1636,13 @@ void BytecodeGraphBuilder::VisitTestInstanceOf() {
   BuildCompareOp(javascript()->InstanceOf());
 }
 
+void BytecodeGraphBuilder::VisitTestUndetectable() {
+  Node* object =
+      environment()->LookupRegister(bytecode_iterator().GetRegisterOperand(0));
+  Node* node = NewNode(javascript()->IsUndetectable(), object);
+  environment()->BindAccumulator(node);
+}
+
 void BytecodeGraphBuilder::BuildCastOperator(const Operator* js_op) {
   PrepareEagerCheckpoint();
   Node* value = NewNode(js_op, environment()->LookupAccumulator());