[Tracing] Use TracingCategoryObserver in runtime statistics

src/ic/handler-compiler.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/ic/handler-compiler.h"
 
 #include "src/field-type.h"
 #include "src/ic/call-optimization.h"
 #include "src/ic/handler-configuration-inl.h"
 #include "src/ic/ic-inl.h"
@@ skipping 194 matching lines @@
   if (IC::ShouldPushPopSlotAndVector(kind())) {
     DiscardVectorAndSlot();
   }
   GenerateLoadConstant(isolate()->factory()->undefined_value());
   FrontendFooter(name, &miss);
   return GetCode(kind(), name);
 }
 
 Handle<Code> NamedLoadHandlerCompiler::CompileLoadCallback(
     Handle<Name> name, Handle<AccessorInfo> callback, Handle<Code> slow_stub) {
-  if (FLAG_runtime_call_stats) {
+  if (V8_UNLIKELY(FLAG_runtime_stats)) {
     GenerateTailCall(masm(), slow_stub);
   }
   Register reg = Frontend(name);
   GenerateLoadCallback(reg, callback);
   return GetCode(kind(), name);
 }
 
 Handle<Code> NamedLoadHandlerCompiler::CompileLoadCallback(
     Handle<Name> name, const CallOptimization& call_optimization,
     int accessor_index, Handle<Code> slow_stub) {
   DCHECK(call_optimization.is_simple_api_call());
-  if (FLAG_runtime_call_stats) {
+  if (V8_UNLIKELY(FLAG_runtime_stats)) {
     GenerateTailCall(masm(), slow_stub);
   }
   Register holder = Frontend(name);
   GenerateApiAccessorCall(masm(), call_optimization, map(), receiver(),
                           scratch2(), false, no_reg, holder, accessor_index);
   return GetCode(kind(), name);
 }
 
 
 void NamedLoadHandlerCompiler::InterceptorVectorSlotPush(Register holder_reg) {
@@ skipping 333 matching lines @@
   GenerateStoreViaSetter(masm(), map(), receiver(), holder, accessor_index,
                          expected_arguments, scratch2());
 
   return GetCode(kind(), name);
 }
 
 Handle<Code> NamedStoreHandlerCompiler::CompileStoreCallback(
     Handle<JSObject> object, Handle<Name> name,
     const CallOptimization& call_optimization, int accessor_index,
     Handle<Code> slow_stub) {
-  if (FLAG_runtime_call_stats) {
+  if (V8_UNLIKELY(FLAG_runtime_stats)) {
     GenerateTailCall(masm(), slow_stub);
   }
   Register holder = Frontend(name);
   if (Descriptor::kPassLastArgsOnStack) {
     __ LoadParameterFromStack<Descriptor>(value(), Descriptor::kValue);
   }
   GenerateApiAccessorCall(masm(), call_optimization, handle(object->map()),
                           receiver(), scratch2(), true, value(), holder,
                           accessor_index);
   return GetCode(kind(), name);
@@ skipping 55 matching lines @@
 }
 
 void ElementHandlerCompiler::CompileElementHandlers(
     MapHandleList* receiver_maps, List<Handle<Object>>* handlers) {
   for (int i = 0; i < receiver_maps->length(); ++i) {
     handlers->Add(GetKeyedLoadHandler(receiver_maps->at(i), isolate()));
   }
 }
 }  // namespace internal
 }  // namespace v8