Introduce flag --allocation-site-transitioning

src/runtime/runtime-test.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/v8.h"
 
 #include "src/arguments.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen.h"
 #include "src/runtime/runtime.h"
@@ skipping 248 matching lines @@
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_CHECKED(String, arg, 0);
   SmartArrayPointer<char> flags =
       arg->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL);
   FlagList::SetFlagsFromString(flags.get(), StrLength(flags.get()));
   return isolate->heap()->undefined_value();
 }
 
 
+RUNTIME_FUNCTION(Runtime_HasAllocationSiteTransitioning) {
+  SealHandleScope shs(isolate);
+  DCHECK(args.length() == 0);
+  return Smi::FromInt(FLAG_allocation_site_transitioning);
+}
+
+
 RUNTIME_FUNCTION(Runtime_Abort) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);
   CONVERT_SMI_ARG_CHECKED(message_id, 0);
   const char* message =
       GetBailoutReason(static_cast<BailoutReason>(message_id));
   base::OS::PrintError("abort: %s\n", message);
   isolate->PrintStack(stderr);
   base::OS::Abort();
   UNREACHABLE();
@@ skipping 159 matching lines @@
   RUNTIME_FUNCTION(Runtime_HasFixed##Type##Elements) {                        \
     CONVERT_ARG_CHECKED(JSObject, obj, 0);                                    \
     return isolate->heap()->ToBoolean(obj->HasFixed##Type##Elements());       \
   }
 
 TYPED_ARRAYS(FIXED_TYPED_ARRAYS_CHECK_RUNTIME_FUNCTION)
 
 #undef FIXED_TYPED_ARRAYS_CHECK_RUNTIME_FUNCTION
 }
 }  // namespace v8::internal