[builtins] Properly optimize Object.prototype.isPrototypeOf.

src/compiler/operator-properties.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/operator-properties.h"
 
 #include "src/compiler/js-operator.h"
 #include "src/compiler/linkage.h"
 #include "src/compiler/opcodes.h"
 
@@ skipping 44 matching lines @@
     case IrOpcode::kJSShiftRight:
     case IrOpcode::kJSShiftRightLogical:
 
     // Compare operations
     case IrOpcode::kJSEqual:
     case IrOpcode::kJSGreaterThan:
     case IrOpcode::kJSGreaterThanOrEqual:
     case IrOpcode::kJSLessThan:
     case IrOpcode::kJSLessThanOrEqual:
     case IrOpcode::kJSHasProperty:
+    case IrOpcode::kJSHasInPrototypeChain:
     case IrOpcode::kJSInstanceOf:
     case IrOpcode::kJSOrdinaryHasInstance:
 
     // Object operations
     case IrOpcode::kJSCreate:
     case IrOpcode::kJSCreateArguments:
     case IrOpcode::kJSCreateArray:
     case IrOpcode::kJSCreateLiteralArray:
     case IrOpcode::kJSCreateLiteralObject:
     case IrOpcode::kJSCreateLiteralRegExp:
@@ skipping 58 matching lines @@
          opcode == IrOpcode::kDead || opcode == IrOpcode::kLoop ||
          opcode == IrOpcode::kMerge || opcode == IrOpcode::kIfTrue ||
          opcode == IrOpcode::kIfFalse || opcode == IrOpcode::kIfSuccess ||
          opcode == IrOpcode::kIfException || opcode == IrOpcode::kIfValue ||
          opcode == IrOpcode::kIfDefault;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8