Share literals arrays per <NativeContext, SharedFunctionInfo> pair.

src/factory.cc

 // Copyright 2014 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/factory.h"
 
 #include "src/allocation-site-scopes.h"
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
 #include "src/conversions.h"
@@ skipping 1296 matching lines @@
   }
 
   if (FLAG_always_opt && info->allows_lazy_compilation()) {
     result->MarkForOptimization();
   }
 
   CodeAndLiterals cached = info->SearchOptimizedCodeMap(
       context->native_context(), BailoutId::None());
   if (cached.code != nullptr) {
     // Caching of optimized code enabled and optimized code found.
-    if (cached.literals != nullptr) result->set_literals(cached.literals);
     DCHECK(!cached.code->marked_for_deoptimization());
     DCHECK(result->shared()->is_compiled());
     result->ReplaceCode(cached.code);
   }
 
-  if (cached.literals == nullptr && !info->bound()) {
+  if (cached.literals != nullptr) {
+    result->set_literals(cached.literals);
+
+  } else if (!info->bound()) {
     int number_of_literals = info->num_literals();
-    // TODO(mstarzinger): Consider sharing the newly created literals array.
     Handle<FixedArray> literals = NewFixedArray(number_of_literals, pretenure);
     result->set_literals(*literals);
+    // Cache context-specific literals.
+    if (FLAG_cache_optimized_code) {
+      Handle<Context> native_context(context->native_context());
+      SharedFunctionInfo::AddToOptimizedCodeMap(
+          info, native_context, undefined_value(), literals, BailoutId::None());
+    }
   }
 
   return result;
 }
 
 
 Handle<ScopeInfo> Factory::NewScopeInfo(int length) {
   Handle<FixedArray> array = NewFixedArray(length, TENURED);
   array->set_map_no_write_barrier(*scope_info_map());
   Handle<ScopeInfo> scope_info = Handle<ScopeInfo>::cast(array);
@@ skipping 1028 matching lines @@
 }
 
 
 Handle<Object> Factory::ToBoolean(bool value) {
   return value ? true_value() : false_value();
 }
 
 
 }  // namespace internal
 }  // namespace v8