Check that external references are registered in the serializer.

src/arm/codegen-arm.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_ARM
 
 #include "src/arm/simulator-arm.h"
 #include "src/codegen.h"
@@ skipping 779 matching lines @@
   DCHECK(!input.is(result));
   DCHECK(!input.is(double_scratch1));
   DCHECK(!input.is(double_scratch2));
   DCHECK(!result.is(double_scratch1));
   DCHECK(!result.is(double_scratch2));
   DCHECK(!double_scratch1.is(double_scratch2));
   DCHECK(!temp1.is(temp2));
   DCHECK(!temp1.is(temp3));
   DCHECK(!temp2.is(temp3));
   DCHECK(ExternalReference::math_exp_constants(0).address() != NULL);
+  DCHECK(!masm->serializer_enabled());  // External references not serializable.
 
   Label zero, infinity, done;
 
   __ mov(temp3, Operand(ExternalReference::math_exp_constants(0)));
 
   __ vldr(double_scratch1, ExpConstant(0, temp3));
   __ VFPCompareAndSetFlags(double_scratch1, input);
   __ b(ge, &zero);
 
   __ vldr(double_scratch2, ExpConstant(1, temp3));
@@ skipping 117 matching lines @@
     patcher.masm()->add(r0, pc, Operand(-8));
     patcher.masm()->ldr(pc, MemOperand(pc, -4));
     patcher.masm()->emit_code_stub_address(stub);
   }
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM