[compiler] Drop the CompareNilIC.

src/compiler/js-typed-lowering.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/code-factory.h"
 #include "src/compilation-dependencies.h"
 #include "src/compiler/access-builder.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/js-typed-lowering.h"
 #include "src/compiler/linkage.h"
@@ skipping 515 matching lines @@
                                               invert);
   }
   if (r.BothInputsAre(Type::Boolean())) {
     return r.ChangeToPureOperator(simplified()->ReferenceEqual(Type::Boolean()),
                                   invert);
   }
   if (r.BothInputsAre(Type::Receiver())) {
     return r.ChangeToPureOperator(
         simplified()->ReferenceEqual(Type::Receiver()), invert);
   }
-  if (r.OneInputIs(Type::NullOrUndefined())) {
-    Callable const callable = CodeFactory::CompareNilIC(isolate(), kNullValue);
-    CallDescriptor const* const desc = Linkage::GetStubCallDescriptor(
-        isolate(), graph()->zone(), callable.descriptor(), 0,
-        CallDescriptor::kNeedsFrameState, node->op()->properties());
-    node->RemoveInput(r.LeftInputIs(Type::NullOrUndefined()) ? 0 : 1);
-    node->InsertInput(graph()->zone(), 0,
-                      jsgraph()->HeapConstant(callable.code()));
-    NodeProperties::ChangeOp(node, common()->Call(desc));
+  if (r.OneInputIs(Type::Undetectable())) {
+    RelaxEffectsAndControls(node);
+    node->RemoveInput(r.LeftInputIs(Type::Undetectable()) ? 0 : 1);
+    node->TrimInputCount(1);
+    NodeProperties::ChangeOp(node, simplified()->ObjectIsUndetectable());
     if (invert) {
       // Insert an boolean not to invert the value.
       Node* value = graph()->NewNode(simplified()->BooleanNot(), node);
       node->ReplaceUses(value);
       // Note: ReplaceUses() smashes all uses, so smash it back here.
       value->ReplaceInput(0, node);
       return Replace(value);
     }
     return Changed(node);
   }
@@ skipping 1204 matching lines @@
 }
 
 
 CompilationDependencies* JSTypedLowering::dependencies() const {
   return dependencies_;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8