--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/c1/c1_CFGPrinter.hpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2005, 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_C1_C1_CFGPRINTER_HPP
+#define SHARE_VM_C1_C1_CFGPRINTER_HPP
+
+#include "c1/c1_Compilation.hpp"
+#include "c1/c1_Instruction.hpp"
+
+#ifndef PRODUCT
+
+// This is a utility class used for recording the results of a
+// compilation for later analysis.
+
+class CFGPrinterOutput;
+class Interval;
+
+typedef GrowableArray<Interval*> IntervalList;
+
+class CFGPrinter : public AllStatic {
+public:
+  static void print_compilation(Compilation* compilation);
+  static void print_cfg(BlockList* blocks, const char* name, bool do_print_HIR, bool do_print_LIR);
+  static void print_cfg(IR* blocks, const char* name, bool do_print_HIR, bool do_print_LIR);
+  static void print_intervals(IntervalList* intervals, const char* name);
+};
+
+class CFGPrinterOutput : public CHeapObj<mtCompiler> {
+ private:
+  outputStream* _output;
+
+  Compilation*  _compilation;
+  bool _do_print_HIR;
+  bool _do_print_LIR;
+
+  class PrintBlockClosure: public BlockClosure {
+    void block_do(BlockBegin* block) { if (block != NULL) Compilation::current()->cfg_printer_output()->print_block(block); }
+  };
+
+  outputStream* output() { assert(_output != NULL, ""); return _output; }
+
+  void inc_indent();
+  void dec_indent();
+  void print(const char* format, ...) ATTRIBUTE_PRINTF(2, 3);
+  void print_begin(const char* tag);
+  void print_end(const char* tag);
+
+  char* method_name(ciMethod* method, bool short_name = false);
+
+ public:
+  CFGPrinterOutput(Compilation* compilation);
+
+  void set_print_flags(bool do_print_HIR, bool do_print_LIR) { _do_print_HIR = do_print_HIR; _do_print_LIR = do_print_LIR; }
+
+  void print_compilation();
+  void print_intervals(IntervalList* intervals, const char* name);
+
+  void print_state(BlockBegin* block);
+  void print_operand(Value instr);
+  void print_HIR(Value instr);
+  void print_HIR(BlockBegin* block);
+  void print_LIR(BlockBegin* block);
+  void print_block(BlockBegin* block);
+  void print_cfg(BlockList* blocks, const char* name);
+  void print_cfg(IR* blocks, const char* name);
+};
+
+#endif
+
+#endif // SHARE_VM_C1_C1_CFGPRINTER_HPP