[turbofan] Optimize typeof o === "object" checks.

src/compiler/simplified-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/compiler/simplified-lowering.h"
 
 #include <limits>
 
 #include "src/address-map.h"
 #include "src/base/bits.h"
@@ skipping 2497 matching lines @@
               NodeProperties::ChangeOp(node,
                                        simplified()->PlainPrimitiveToFloat64());
             }
           }
         } else {
           VisitUnop(node, UseInfo::AnyTagged(), MachineRepresentation::kTagged);
         }
         return;
       }
       case IrOpcode::kObjectIsCallable: {
-        // TODO(turbofan): Add Type::Callable to optimize this?
-        VisitUnop(node, UseInfo::AnyTagged(), MachineRepresentation::kBit);
+        VisitObjectIs(node, Type::Callable(), lowering);
+        return;
+      }
+      case IrOpcode::kObjectIsNonCallable: {
+        VisitObjectIs(node, Type::NonCallable(), lowering);
         return;
       }
       case IrOpcode::kObjectIsNumber: {
         VisitObjectIs(node, Type::Number(), lowering);
         return;
       }
       case IrOpcode::kObjectIsReceiver: {
         VisitObjectIs(node, Type::Receiver(), lowering);
         return;
       }
@@ skipping 973 matching lines @@
         isolate(), graph()->zone(), callable.descriptor(), 0, flags,
         Operator::kNoProperties);
     to_number_operator_.set(common()->Call(desc));
   }
   return to_number_operator_.get();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8