Deopt marked code at safe deoptimization point when pretenuring.

src/execution.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 484 matching lines @@
 }
 
 
 void StackGuard::FullDeopt() {
   ExecutionAccess access(isolate_);
   thread_local_.interrupt_flags_ |= FULL_DEOPT;
   set_interrupt_limits(access);
 }
 
 
+bool StackGuard::IsDeoptMarkedCode() {
+  ExecutionAccess access(isolate_);
+  return (thread_local_.interrupt_flags_ & DEOPT_MARKED_CODE) != 0;
+}
+
+
+void StackGuard::DeoptMarkedCode() {
+  ExecutionAccess access(isolate_);
+  thread_local_.interrupt_flags_ |= DEOPT_MARKED_CODE;
+  set_interrupt_limits(access);
+}
+
+
 #ifdef ENABLE_DEBUGGER_SUPPORT
 bool StackGuard::IsDebugBreak() {
   ExecutionAccess access(isolate_);
   return thread_local_.interrupt_flags_ & DEBUGBREAK;
 }
 
 
 void StackGuard::DebugBreak() {
   ExecutionAccess access(isolate_);
   thread_local_.interrupt_flags_ |= DEBUGBREAK;
@@ skipping 491 matching lines @@
     return isolate->TerminateExecution();
   }
   if (stack_guard->IsInterrupted()) {
     stack_guard->Continue(INTERRUPT);
     return isolate->StackOverflow();
   }
   if (stack_guard->IsFullDeopt()) {
     stack_guard->Continue(FULL_DEOPT);
     Deoptimizer::DeoptimizeAll(isolate);
   }
+  if (stack_guard->IsDeoptMarkedCode()) {
+    stack_guard->Continue(DEOPT_MARKED_CODE);
+    Deoptimizer::DeoptimizeMarkedCode(isolate);
+  }
   if (stack_guard->IsInstallCodeRequest()) {
     ASSERT(isolate->concurrent_recompilation_enabled());
     stack_guard->Continue(INSTALL_CODE);
     isolate->optimizing_compiler_thread()->InstallOptimizedFunctions();
   }
   isolate->runtime_profiler()->OptimizeNow();
   return isolate->heap()->undefined_value();
 }
 
 
 } }  // namespace v8::internal