Added a special stack guard to deopt marked allocation sites.

src/execution.cc

Index: src/execution.cc
diff --git a/src/execution.cc b/src/execution.cc
index 081cfb61a439b0eb0cfc8bf78cfbadd7de8db521..690a4e3f4e6cd8570a0b052ee643b8fedb24aa69 100644
--- a/src/execution.cc
+++ b/src/execution.cc
@@ -516,15 +516,15 @@ void StackGuard::FullDeopt() {
 }
 
 
-bool StackGuard::IsDeoptMarkedCode() {
+bool StackGuard::IsDeoptMarkedAllocationSites() {
   ExecutionAccess access(isolate_);
-  return (thread_local_.interrupt_flags_ & DEOPT_MARKED_CODE) != 0;
+  return (thread_local_.interrupt_flags_ & DEOPT_MARKED_ALLOCATION_SITES) != 0;
 }
 
 
-void StackGuard::DeoptMarkedCode() {
+void StackGuard::DeoptMarkedAllocationSites() {
   ExecutionAccess access(isolate_);
-  thread_local_.interrupt_flags_ |= DEOPT_MARKED_CODE;
+  thread_local_.interrupt_flags_ |= DEOPT_MARKED_ALLOCATION_SITES;
   set_interrupt_limits(access);
 }
 
@@ -1040,9 +1040,9 @@ MaybeObject* Execution::HandleStackGuardInterrupt(Isolate* isolate) {
     stack_guard->Continue(FULL_DEOPT);
     Deoptimizer::DeoptimizeAll(isolate);
   }
-  if (stack_guard->IsDeoptMarkedCode()) {
-    stack_guard->Continue(DEOPT_MARKED_CODE);
-    Deoptimizer::DeoptimizeMarkedCode(isolate);
+  if (stack_guard->IsDeoptMarkedAllocationSites()) {
+    stack_guard->Continue(DEOPT_MARKED_ALLOCATION_SITES);
+    isolate->heap()->DeoptMarkedAllocationSites();
   }
   if (stack_guard->IsInstallCodeRequest()) {
     ASSERT(isolate->concurrent_recompilation_enabled());