--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/analyzer/bar-chart.h	Mon May 25 07:50:57 2020 +0900
@@ -0,0 +1,60 @@
+/* Support for plotting bar charts in dumps.
+   Copyright (C) 2020 Free Software Foundation, Inc.
+   Contributed by David Malcolm <dmalcolm@redhat.com>.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_ANALYZER_BAR_CHART_H
+#define GCC_ANALYZER_BAR_CHART_H
+
+namespace ana {
+
+/* A class for printing bar charts to a pretty_printer.
+
+   TODO(stage1): move to gcc subdir? */
+
+class bar_chart
+{
+public:
+  typedef unsigned long value_t;
+
+  /* Add an item, taking a copy of NAME.  */
+  void add_item (const char *name, value_t value);
+
+  /* Print the data to PP.  */
+  void print (pretty_printer *pp) const;
+
+private:
+  struct item
+  {
+    item (const char *name, value_t value)
+    : m_name (xstrdup (name)), m_strlen (strlen (name)) , m_value (value) {}
+    ~item () { free (m_name); }
+
+    char *m_name;
+    size_t m_strlen;
+    value_t m_value;
+  };
+
+  static void print_padding (pretty_printer *pp, size_t count);
+
+  auto_delete_vec<item> m_items;
+};
+
+} // namespace ana
+
+#endif /* GCC_ANALYZER_BAR_CHART_H */