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/tail-call-optimization.h b/src/compiler/tail-call-optimization.h
new file mode 100644
index 0000000..b5d4f96
--- /dev/null
+++ b/src/compiler/tail-call-optimization.h
@@ -0,0 +1,40 @@
+// 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_TAIL_CALL_OPTIMIZATION_H_
+#define V8_COMPILER_TAIL_CALL_OPTIMIZATION_H_
+
+#include "src/compiler/graph-reducer.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+// Forward declarations.
+class CommonOperatorBuilder;
+class Graph;
+
+
+// Performs tail call optimization by replacing certain combinations of Return
+// and Call nodes with a single TailCall.
+class TailCallOptimization final : public Reducer {
+ public:
+ TailCallOptimization(CommonOperatorBuilder* common, Graph* graph)
+ : common_(common), graph_(graph) {}
+
+ Reduction Reduce(Node* node) final;
+
+ private:
+ CommonOperatorBuilder* common() const { return common_; }
+ Graph* graph() const { return graph_; }
+
+ CommonOperatorBuilder* const common_;
+ Graph* const graph_;
+};
+
+} // namespace compiler
+} // namespace internal
+} // namespace v8
+
+#endif // V8_COMPILER_TAIL_CALL_OPTIMIZATION_H_