Revert of Type Feedback Vector lives in the closure

src/debug/debug.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/debug/debug.h"
 
 #include "src/api.h"
 #include "src/arguments.h"
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
@@ skipping 1130 matching lines @@
 bool Debug::PrepareFunctionForBreakPoints(Handle<SharedFunctionInfo> shared) {
   DCHECK(shared->is_compiled());
 
   if (isolate_->concurrent_recompilation_enabled()) {
     isolate_->optimizing_compile_dispatcher()->Flush();
   }
 
   List<Handle<JSFunction> > functions;
   List<Handle<JSGeneratorObject> > suspended_generators;
 
-  // Flush all optimized code. Note that the below heap iteration does not
+  // Flush all optimized code maps. Note that the below heap iteration does not
   // cover this, because the given function might have been inlined into code
   // for which no JSFunction exists.
   {
     SharedFunctionInfo::Iterator iterator(isolate_);
     while (SharedFunctionInfo* shared = iterator.Next()) {
-      shared->ClearCodeFromOptimizedCodeMap();
+      if (!shared->OptimizedCodeMapIsCleared()) {
+        shared->ClearOptimizedCodeMap();
+      }
     }
   }
 
   // Make sure we abort incremental marking.
   isolate_->heap()->CollectAllGarbage(Heap::kMakeHeapIterableMask,
                                       "prepare for break points");
 
   {
     HeapIterator iterator(isolate_->heap());
     HeapObject* obj;
@@ skipping 21 matching lines @@
     }
   }
 
   if (!shared->HasDebugCode()) {
     DCHECK(functions.length() > 0);
     if (!Compiler::CompileDebugCode(functions.first())) return false;
   }
 
   for (Handle<JSFunction> const function : functions) {
     function->ReplaceCode(shared->code());
-    JSFunction::EnsureLiterals(function);
   }
 
   for (Handle<JSGeneratorObject> const generator_obj : suspended_generators) {
     int index = generator_obj->continuation();
     int pc_offset = ComputePcOffsetFromContinuationIndex(shared->code(), index);
     generator_obj->set_continuation(pc_offset);
   }
 
   // Update PCs on the stack to point to recompiled code.
   RedirectActiveFunctions redirect_visitor(*shared);
@@ skipping 1237 matching lines @@
 }
 
 
 void LockingCommandMessageQueue::Clear() {
   base::LockGuard<base::Mutex> lock_guard(&mutex_);
   queue_.Clear();
 }
 
 }  // namespace internal
 }  // namespace v8