Check that external references are registered in the serializer.

src/ia32/codegen-ia32.cc

 // Copyright 2012 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/v8.h"
 
 #if V8_TARGET_ARCH_IA32
 
 #include "src/codegen.h"
 #include "src/heap/heap.h"
@@ skipping 911 matching lines @@
                                    XMMRegister input,
                                    XMMRegister result,
                                    XMMRegister double_scratch,
                                    Register temp1,
                                    Register temp2) {
   DCHECK(!input.is(double_scratch));
   DCHECK(!input.is(result));
   DCHECK(!result.is(double_scratch));
   DCHECK(!temp1.is(temp2));
   DCHECK(ExternalReference::math_exp_constants(0).address() != NULL);
+  DCHECK(!masm->serializer_enabled());  // External references not serializable.
 
   Label done;
 
   __ movsd(double_scratch, ExpConstant(0));
   __ xorpd(result, result);
   __ ucomisd(double_scratch, input);
   __ j(above_equal, &done);
   __ ucomisd(input, ExpConstant(1));
   __ movsd(result, ExpConstant(2));
   __ j(above_equal, &done);
@@ skipping 81 matching lines @@
     Code* stub = GetCodeAgeStub(isolate, age, parity);
     CodePatcher patcher(sequence, young_length);
     patcher.masm()->call(stub->instruction_start(), RelocInfo::NONE32);
   }
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32