Upgrade V8 to version 4.9.385.28
https://chromium.googlesource.com/v8/v8/+/4.9.385.28
FPIIM-449
Change-Id: I4b2e74289d4bf3667f2f3dc8aa2e541f63e26eb4
diff --git a/src/compiler/js-global-object-specialization.h b/src/compiler/js-global-object-specialization.h
new file mode 100644
index 0000000..83d890c
--- /dev/null
+++ b/src/compiler/js-global-object-specialization.h
@@ -0,0 +1,83 @@
+// Copyright 2015 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.
+
+#ifndef V8_COMPILER_JS_GLOBAL_OBJECT_SPECIALIZATION_H_
+#define V8_COMPILER_JS_GLOBAL_OBJECT_SPECIALIZATION_H_
+
+#include "src/base/flags.h"
+#include "src/compiler/graph-reducer.h"
+
+namespace v8 {
+namespace internal {
+
+// Forward declarations.
+class CompilationDependencies;
+class TypeCache;
+
+
+namespace compiler {
+
+// Forward declarations.
+class CommonOperatorBuilder;
+class JSGraph;
+class JSOperatorBuilder;
+class SimplifiedOperatorBuilder;
+
+
+// Specializes a given JSGraph to a given global object, potentially constant
+// folding some {JSLoadGlobal} nodes or strength reducing some {JSStoreGlobal}
+// nodes.
+class JSGlobalObjectSpecialization final : public AdvancedReducer {
+ public:
+ // Flags that control the mode of operation.
+ enum Flag {
+ kNoFlags = 0u,
+ kDeoptimizationEnabled = 1u << 0,
+ };
+ typedef base::Flags<Flag> Flags;
+
+ JSGlobalObjectSpecialization(Editor* editor, JSGraph* jsgraph, Flags flags,
+ MaybeHandle<Context> native_context,
+ CompilationDependencies* dependencies);
+
+ Reduction Reduce(Node* node) final;
+
+ private:
+ Reduction ReduceJSLoadGlobal(Node* node);
+ Reduction ReduceJSStoreGlobal(Node* node);
+
+ // Retrieve the global object from the given {node} if known.
+ MaybeHandle<JSGlobalObject> GetGlobalObject(Node* node);
+
+ struct ScriptContextTableLookupResult;
+ bool LookupInScriptContextTable(Handle<JSGlobalObject> global_object,
+ Handle<Name> name,
+ ScriptContextTableLookupResult* result);
+
+ Graph* graph() const;
+ JSGraph* jsgraph() const { return jsgraph_; }
+ Isolate* isolate() const;
+ CommonOperatorBuilder* common() const;
+ JSOperatorBuilder* javascript() const;
+ SimplifiedOperatorBuilder* simplified() const;
+ Flags flags() const { return flags_; }
+ MaybeHandle<Context> native_context() const { return native_context_; }
+ CompilationDependencies* dependencies() const { return dependencies_; }
+
+ JSGraph* const jsgraph_;
+ Flags const flags_;
+ MaybeHandle<Context> native_context_;
+ CompilationDependencies* const dependencies_;
+ TypeCache const& type_cache_;
+
+ DISALLOW_COPY_AND_ASSIGN(JSGlobalObjectSpecialization);
+};
+
+DEFINE_OPERATORS_FOR_FLAGS(JSGlobalObjectSpecialization::Flags)
+
+} // namespace compiler
+} // namespace internal
+} // namespace v8
+
+#endif // V8_COMPILER_JS_GLOBAL_OBJECT_SPECIALIZATION_H_