Age ICs on context dispose notification.

R=ulan@chromium.org
BUG=309723

Review URL: https://codereview.chromium.org/59383012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17526 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/code-stubs-hydrogen.cc

@@ -1240,8 +1240,6 @@ HValue* CodeStubGraphBuilder<FastNewClosureStub>::BuildCodeStub() {
   Add<HStoreNamedField>(js_function,
                         HObjectAccess::ForSharedFunctionInfoPointer(),
                         shared_info);
-  Add<HStoreNamedField>(js_function, HObjectAccess::ForFunctionContextPointer(),
-                        shared_info);
   Add<HStoreNamedField>(js_function, HObjectAccess::ForFunctionContextPointer(),
                         context());
 

src/compiler.cc

@@ -262,8 +262,11 @@ static bool AlwaysFullCompiler(Isolate* isolate) {
 
 void RecompileJob::RecordOptimizationStats() {
   Handle<JSFunction> function = info()->closure();
+  if (!function->IsOptimized()) {
+    // Concurrent recompilation and OSR may race.  Increment only once.
     int opt_count = function->shared()->opt_count();
     function->shared()->set_opt_count(opt_count + 1);
+  }
   double ms_creategraph = time_taken_to_create_graph_.InMillisecondsF();
   double ms_optimize = time_taken_to_optimize_.InMillisecondsF();
   double ms_codegen = time_taken_to_codegen_.InMillisecondsF();

src/heap.cc

@@ -767,6 +767,7 @@ int Heap::NotifyContextDisposed() {
     isolate()->optimizing_compiler_thread()->Flush();
   }
   flush_monomorphic_ics_ = true;
+  AgeInlineCaches();
   return ++contexts_disposed_;
 }
 
@@ -1164,8 +1165,6 @@ void Heap::MarkCompact(GCTracer* tracer) {
 
   isolate_->counters()->objs_since_last_full()->Set(0);
 
-  contexts_disposed_ = 0;
-
   flush_monomorphic_ics_ = false;
 }
 
@@ -5742,12 +5741,7 @@ bool Heap::IdleNotification(int hint) {
       size_factor * IncrementalMarking::kAllocatedThreshold;
 
   if (contexts_disposed_ > 0) {
-    if (hint >= kMaxHint) {
-      // The embedder is requesting a lot of GC work after context disposal,
-      // we age inline caches so that they don't keep objects from
-      // the old context alive.
-      AgeInlineCaches();
-    }
+    contexts_disposed_ = 0;
     int mark_sweep_time = Min(TimeMarkSweepWouldTakeInMs(), 1000);
     if (hint >= mark_sweep_time && !FLAG_expose_gc &&
         incremental_marking()->IsStopped()) {
@@ -5756,8 +5750,8 @@ bool Heap::IdleNotification(int hint) {
                         "idle notification: contexts disposed");
     } else {
       AdvanceIdleIncrementalMarking(step_size);
-      contexts_disposed_ = 0;
     }
+
     // After context disposal there is likely a lot of garbage remaining, reset
     // the idle notification counters in order to trigger more incremental GCs
     // on subsequent idle notifications.

src/objects.cc

@@ -9588,7 +9588,7 @@ MaybeObject* SharedFunctionInfo::AddToOptimizedCodeMap(Context* native_context,
   if (value->IsSmi()) {
     // No optimized code map.
     ASSERT_EQ(0, Smi::cast(value)->value());
-    // Crate 3 entries per context {context, code, literals}.
+    // Create 3 entries per context {context, code, literals}.
     MaybeObject* maybe = heap->AllocateFixedArray(kInitialLength);
     if (!maybe->To(&new_code_map)) return maybe;
     new_code_map->set(kEntriesStart + 0, native_context);