Optimize functions on a second thread.

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index 54bb61a0bb93044481c2378ade39e34135bdce2a..31e44a4f8f2e000e75f116c878405c120110b8db 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -54,7 +54,7 @@
 #include "runtime-profiler.h"
 #include "runtime.h"
 #include "scopeinfo.h"
-#include "smart-array-pointer.h"
+#include "smart-pointers.h"
 #include "string-search.h"
 #include "stub-cache.h"
 #include "v8threads.h"
@@ -8292,6 +8292,14 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_LazyRecompile) {
 }
 
 
+RUNTIME_FUNCTION(MaybeObject*, Runtime_ParallelRecompile) {
+  HandleScope handle_scope(isolate);
+  ASSERT(FLAG_parallel_recompilation);
+  Compiler::RecompileParallel(args.at<JSFunction>(0));
+  return *isolate->factory()->undefined_value();
+}
+
+
 class ActivationsFinder : public ThreadVisitor {
  public:
   explicit ActivationsFinder(JSFunction* function)
@@ -8486,6 +8494,11 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_GetOptimizationStatus) {
     return Smi::FromInt(4);  // 4 == "never".
   }
   CONVERT_ARG_HANDLE_CHECKED(JSFunction, function, 0);
+  if (FLAG_parallel_recompilation) {
+    if (function->IsMarkedForLazyRecompilation()) {
+      return Smi::FromInt(5);
+    }
+  }
   if (FLAG_always_opt) {
     // We may have always opt, but that is more best-effort than a real
     // promise, so we still say "no" if it is not optimized.