Introduce runtime function %OptimizeFunctionOnNextCall to manually trigger optimization.

src/runtime-profiler.cc

Index: src/runtime-profiler.cc
diff --git a/src/runtime-profiler.cc b/src/runtime-profiler.cc
index 6e25169c56fe28eed8a4c6b1a390827bef59f1ac..5b0aa8f72868f9ca8a7bfadf631db9afd6ba299d 100644
--- a/src/runtime-profiler.cc
+++ b/src/runtime-profiler.cc
@@ -107,12 +107,6 @@ void PendingListNode::WeakCallback(v8::Persistent<v8::Value>, void* data) {
 }
 
 
-static bool IsOptimizable(JSFunction* function) {
-  Code* code = function->code();
-  return code->kind() == Code::FUNCTION && code->optimizable();
-}
-
-
 Atomic32 RuntimeProfiler::state_ = 0;
 // TODO(isolates): Create the semaphore lazily and clean it up when no
 // longer required.
@@ -146,7 +140,7 @@ bool RuntimeProfiler::IsEnabled() {
 
 
 void RuntimeProfiler::Optimize(JSFunction* function, bool eager, int delay) {
-  ASSERT(IsOptimizable(function));
+  ASSERT(function->IsOptimizable());
   if (FLAG_trace_opt) {
     PrintF("[marking (%s) ", eager ? "eagerly" : "lazily");
     function->PrintName();
@@ -245,7 +239,7 @@ void RuntimeProfiler::OptimizeNow() {
     if (current->IsValid()) {
       Handle<JSFunction> function = current->function();
       int delay = current->Delay();
-      if (IsOptimizable(*function)) {
+      if (function->IsOptimizable()) {
         Optimize(*function, true, delay);
       }
     }
@@ -290,7 +284,7 @@ void RuntimeProfiler::OptimizeNow() {
     }
 
     // Do not record non-optimizable functions.
-    if (!IsOptimizable(function)) continue;
+    if (!function->IsOptimizable()) continue;
     samples[sample_count++] = function;
 
     int function_size = function->shared()->SourceSize();
@@ -330,7 +324,7 @@ void RuntimeProfiler::OptimizeNow() {
 
 
 void RuntimeProfiler::OptimizeSoon(JSFunction* function) {
-  if (!IsOptimizable(function)) return;
+  if (!function->IsOptimizable()) return;
   PendingListNode* node = new PendingListNode(function);
   node->set_next(optimize_soon_list_);
   optimize_soon_list_ = node;