[turbofan] Add binary operation hints for javascript operators.

src/compiler/type-hint-analyzer.h

+// 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_TYPE_HINT_ANALYZER_H_
+#define V8_COMPILER_TYPE_HINT_ANALYZER_H_
+
+#include "src/handles.h"
+#include "src/utils.h"
+#include "src/zone-containers.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+// Forward declarations.
+class BinaryOperationHints;
+
+
+// The result of analyzing type hints.
+class TypeHintAnalysis final : public ZoneObject {
+ public:
+  typedef ZoneMap<TypeFeedbackId, Handle<Code>> Infos;
+
+  explicit TypeHintAnalysis(Infos const& infos) : infos_(infos) {}
+
+  bool GetBinaryOperationHints(TypeFeedbackId id,
+                               BinaryOperationHints* hints) const;
+
+ private:
+  Infos const infos_;
+};
+
+
+// The class that performs type hint analysis on the fullcodegen code object.
+class TypeHintAnalyzer final {
+ public:
+  explicit TypeHintAnalyzer(Zone* zone) : zone_(zone) {}
+
+  TypeHintAnalysis* Analyze(Handle<Code> code);
+
+ private:
+  Zone* zone() const { return zone_; }
+
+  Zone* const zone_;
+
+  DISALLOW_COPY_AND_ASSIGN(TypeHintAnalyzer);
+};
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_COMPILER_TYPE_HINT_ANALYZER_H_