Reuse AstValueFactory when optimizing.

src/compiler.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/v8.h"
 
 #include "src/compiler.h"
 
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 21 matching lines @@
 
 
 CompilationInfo::CompilationInfo(Handle<Script> script,
                                  Zone* zone)
     : flags_(StrictModeField::encode(SLOPPY)),
       script_(script),
       osr_ast_id_(BailoutId::None()),
       parameter_count_(0),
       this_has_uses_(true),
       optimization_id_(-1),
-      ast_value_factory_(NULL) {
+      ast_value_factory_(NULL),
+      ast_value_factory_owned_(false) {
   Initialize(script->GetIsolate(), BASE, zone);
 }
 
 
 CompilationInfo::CompilationInfo(Handle<SharedFunctionInfo> shared_info,
                                  Zone* zone)
     : flags_(StrictModeField::encode(SLOPPY) | IsLazy::encode(true)),
       shared_info_(shared_info),
       script_(Handle<Script>(Script::cast(shared_info->script()))),
       osr_ast_id_(BailoutId::None()),
       parameter_count_(0),
       this_has_uses_(true),
       optimization_id_(-1),
-      ast_value_factory_(NULL) {
+      ast_value_factory_(NULL),
+      ast_value_factory_owned_(false) {
   Initialize(script_->GetIsolate(), BASE, zone);
 }
 
 
 CompilationInfo::CompilationInfo(Handle<JSFunction> closure,
                                  Zone* zone)
     : flags_(StrictModeField::encode(SLOPPY) | IsLazy::encode(true)),
       closure_(closure),
       shared_info_(Handle<SharedFunctionInfo>(closure->shared())),
       script_(Handle<Script>(Script::cast(shared_info_->script()))),
       context_(closure->context()),
       osr_ast_id_(BailoutId::None()),
       parameter_count_(0),
       this_has_uses_(true),
       optimization_id_(-1),
-      ast_value_factory_(NULL) {
+      ast_value_factory_(NULL),
+      ast_value_factory_owned_(false) {
   Initialize(script_->GetIsolate(), BASE, zone);
 }
 
 
 CompilationInfo::CompilationInfo(HydrogenCodeStub* stub,
                                  Isolate* isolate,
                                  Zone* zone)
     : flags_(StrictModeField::encode(SLOPPY) | IsLazy::encode(true)),
       osr_ast_id_(BailoutId::None()),
       parameter_count_(0),
       this_has_uses_(true),
       optimization_id_(-1),
-      ast_value_factory_(NULL) {
+      ast_value_factory_(NULL),
+      ast_value_factory_owned_(false) {
   Initialize(isolate, STUB, zone);
   code_stub_ = stub;
 }
 
 
 void CompilationInfo::Initialize(Isolate* isolate,
                                  Mode mode,
                                  Zone* zone) {
   isolate_ = isolate;
   function_ = NULL;
@@ skipping 32 matching lines @@
     // passed in shared info, rather than creating a new one.
     feedback_vector_ = Handle<FixedArray>(shared_info()->feedback_vector(),
                                           isolate);
   }
 }
 
 
 CompilationInfo::~CompilationInfo() {
   delete deferred_handles_;
   delete no_frame_ranges_;
-  delete ast_value_factory_;
+  if (ast_value_factory_owned_) delete ast_value_factory_;
 #ifdef DEBUG
   // Check that no dependent maps have been added or added dependent maps have
   // been rolled back or committed.
   for (int i = 0; i < DependentCode::kGroupCount; i++) {
     ASSERT_EQ(NULL, dependencies_[i]);
   }
 #endif  // DEBUG
 }
 
 
@@ skipping 1152 matching lines @@
   AllowHandleDereference allow_deref;
   bool tracing_on = info()->IsStub()
       ? FLAG_trace_hydrogen_stubs
       : (FLAG_trace_hydrogen &&
          info()->closure()->PassesFilter(FLAG_trace_hydrogen_filter));
   return (tracing_on &&
       OS::StrChr(const_cast<char*>(FLAG_trace_phase), name_[0]) != NULL);
 }
 
 } }  // namespace v8::internal