Revert of [compiler] Drop the CompareNilIC.

src/code-factory.cc

Index: src/code-factory.cc
diff --git a/src/code-factory.cc b/src/code-factory.cc
index acec002c4083a84641ba1f3b5b3527251a8420bd..9898282d31d958ad1c08991e60e2c210c73a2d76 100644
--- a/src/code-factory.cc
+++ b/src/code-factory.cc
@@ -119,6 +119,13 @@
 
 
 // static
+Callable CodeFactory::CompareNilIC(Isolate* isolate, NilValue nil_value) {
+  Handle<Code> code = CompareNilICStub::GetUninitialized(isolate, nil_value);
+  return Callable(code, CompareNilDescriptor(isolate));
+}
+
+
+// static
 Callable CodeFactory::BinaryOpIC(Isolate* isolate, Token::Value op) {
   BinaryOpICStub stub(isolate, op);
   return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());