define ATOMICOPS_COMPILER_BARRIER in platform.h

src/platform-linux.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 260 matching lines @@
   return 16;
 }
 
 
 void OS::ReleaseStore(volatile AtomicWord* ptr, AtomicWord value) {
 #if (defined(V8_TARGET_ARCH_ARM) && defined(__arm__)) || \
     (defined(V8_TARGET_ARCH_MIPS) && defined(__mips__))
   // Only use on ARM or MIPS hardware.
   MemoryBarrier();
 #else
-  __asm__ __volatile__("" : : : "memory");
+  ATOMICOPS_COMPILER_BARRIER();
   // An x86 store acts as a release barrier.
 #endif
   *ptr = value;
 }
 
 
 const char* OS::LocalTimezone(double time) {
   if (isnan(time)) return "";
   time_t tv = static_cast<time_t>(floor(time/msPerSecond));
   struct tm* t = localtime(&tv);
@@ skipping 992 matching lines @@
 
 
 void Sampler::Stop() {
   ASSERT(IsActive());
   SignalSender::RemoveActiveSampler(this);
   SetActive(false);
 }
 
 
 } }  // namespace v8::internal