Fix performance regressions due to lazy initialization.

src/platform-freebsd.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 36 matching lines @@
 #include <strings.h>    // index
 #include <errno.h>
 #include <stdarg.h>
 #include <limits.h>
 
 #undef MAP_TYPE
 
 #include "v8.h"
 #include "v8threads.h"
 
+#include "platform-posix.h"
 #include "platform.h"
 #include "vm-state-inl.h"
 
 
 namespace v8 {
 namespace internal {
 
 // 0 is never a valid thread id on FreeBSD since tids and pids share a
 // name space and pid 0 is used to kill the group (see man 2 kill).
 static const pthread_t kNoThread = (pthread_t) 0;
@@ skipping 17 matching lines @@
   // Convert the current time to a 64-bit integer first, before converting it
   // to an unsigned. Going directly can cause an overflow and the seed to be
   // set to all ones. The seed will be identical for different instances that
   // call this setup code within the same millisecond.
   uint64_t seed = static_cast<uint64_t>(TimeCurrentMillis());
   srandom(static_cast<unsigned int>(seed));
   limit_mutex = CreateMutex();
 }
 
 
+void OS::PostSetUp() {
+  // Math functions depend on CPU features therefore they are initialized after
+  // CPU.
+  MathSetup();
+}
+
+
 void OS::ReleaseStore(volatile AtomicWord* ptr, AtomicWord value) {
   __asm__ __volatile__("" : : : "memory");
   *ptr = value;
 }
 
 
 uint64_t OS::CpuFeaturesImpliedByPlatform() {
   return 0;  // FreeBSD runs on anything.
 }
 
@@ skipping 771 matching lines @@
 
 
 void Sampler::Stop() {
   ASSERT(IsActive());
   SignalSender::RemoveActiveSampler(this);
   SetActive(false);
 }
 
 
 } }  // namespace v8::internal