Re-optimize faster after making a pretenuring decision.

src/runtime-profiler.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 "v8.h"
 
 #include "runtime-profiler.h"
 
 #include "assembler.h"
 #include "bootstrapper.h"
@@ skipping 39 matching lines @@
 static const int kMaxSizeEarlyOpt =
     5 * FullCodeGenerator::kCodeSizeMultiplier;
 
 
 RuntimeProfiler::RuntimeProfiler(Isolate* isolate)
     : isolate_(isolate),
       any_ic_changed_(false) {
 }
 
 
-static void GetICCounts(Code* shared_code,
-                        int* ic_with_type_info_count,
-                        int* ic_total_count,
-                        int* percentage) {
-  *ic_total_count = 0;
-  *ic_with_type_info_count = 0;
-  Object* raw_info = shared_code->type_feedback_info();
-  if (raw_info->IsTypeFeedbackInfo()) {
-    TypeFeedbackInfo* info = TypeFeedbackInfo::cast(raw_info);
-    *ic_with_type_info_count = info->ic_with_type_info_count();
-    *ic_total_count = info->ic_total_count();
-  }
-  *percentage = *ic_total_count > 0
-      ? 100 * *ic_with_type_info_count / *ic_total_count
-      : 100;
-}
-
-
-void RuntimeProfiler::Optimize(JSFunction* function, const char* reason) {
-  ASSERT(function->IsOptimizable());
-
-  if (FLAG_trace_opt && function->PassesFilter(FLAG_hydrogen_filter)) {
-    PrintF("[marking ");
-    function->ShortPrint();
-    PrintF(" for recompilation, reason: %s", reason);
-    if (FLAG_type_info_threshold > 0) {
-      int typeinfo, total, percentage;
-      GetICCounts(function->shared()->code(), &typeinfo, &total, &percentage);
-      PrintF(", ICs with typeinfo: %d/%d (%d%%)", typeinfo, total, percentage);
-    }
-    PrintF("]\n");
-  }
-
-
-  if (isolate_->concurrent_recompilation_enabled() &&
-      !isolate_->bootstrapper()->IsActive()) {
-    if (isolate_->concurrent_osr_enabled() &&
-        isolate_->optimizing_compiler_thread()->IsQueuedForOSR(function)) {
-      // Do not attempt regular recompilation if we already queued this for OSR.
-      // TODO(yangguo): This is necessary so that we don't install optimized
-      // code on a function that is already optimized, since OSR and regular
-      // recompilation race.  This goes away as soon as OSR becomes one-shot.
-      return;
-    }
-    ASSERT(!function->IsInOptimizationQueue());
-    function->MarkForConcurrentOptimization();
-  } else {
-    // The next call to the function will trigger optimization.
-    function->MarkForOptimization();
-  }
-}
-
-
 void RuntimeProfiler::AttemptOnStackReplacement(JSFunction* function) {
   // See AlwaysFullCompiler (in compiler.cc) comment on why we need
   // Debug::has_break_points().
   if (!FLAG_use_osr ||
       isolate_->DebuggerHasBreakPoints() ||
       function->IsBuiltin()) {
     return;
   }
 
   SharedFunctionInfo* shared = function->shared();
@@ skipping 106 matching lines @@
         }
       }
       continue;
     }
     if (!function->IsOptimizable()) continue;
 
     int ticks = shared_code->profiler_ticks();
 
     if (ticks >= kProfilerTicksBeforeOptimization) {
       int typeinfo, total, percentage;
-      GetICCounts(shared_code, &typeinfo, &total, &percentage);
+      shared_code->GetICCounts(&typeinfo, &total, &percentage);
       if (percentage >= FLAG_type_info_threshold) {
         // If this particular function hasn't had any ICs patched for enough
         // ticks, optimize it now.
-        Optimize(function, "hot and stable");
+        Compiler::Optimize(function, "hot and stable");
       } else if (ticks >= kTicksWhenNotEnoughTypeInfo) {
-        Optimize(function, "not much type info but very hot");
+        Compiler::Optimize(function, "not much type info but very hot");
       } else {
         shared_code->set_profiler_ticks(ticks + 1);
         if (FLAG_trace_opt_verbose) {
           PrintF("[not yet optimizing ");
           function->PrintName();
           PrintF(", not enough type info: %d/%d (%d%%)]\n",
                  typeinfo, total, percentage);
         }
       }
     } else if (!any_ic_changed_ &&
                shared_code->instruction_size() < kMaxSizeEarlyOpt) {
       // If no IC was patched since the last tick and this function is very
       // small, optimistically optimize it now.
-      Optimize(function, "small function");
+      Compiler::Optimize(function, "small function");
     } else {
       shared_code->set_profiler_ticks(ticks + 1);
     }
   }
   any_ic_changed_ = false;
 }
 
 
 } }  // namespace v8::internal