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+/* Gimple range edge header file.
+ Copyright (C) 2020-2023 Free Software Foundation, Inc.
+ Contributed by Andrew MacLeod <amacleod@redhat.com>
+ and Aldy Hernandez <aldyh@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 GIMPLE_RANGE_EDGE_H
+#define GIMPLE_RANGE_EDGE_H
+
+// This class is used to query ranges on constant edges in GIMPLE.
+//
+// For a COND_EXPR, the TRUE edge will return [1,1] and the false edge a [0,0].
+//
+// For SWITCH_EXPR, it is awkward to calculate ranges. When a request
+// is made, the entire switch is evaluated and the results cached.
+// Any future requests to that switch will use the cached value, providing
+// dramatic decrease in computation time.
+//
+// The API is simple, just ask for the range on the edge.
+// The return value is NULL for no range, or the branch statement which the
+// edge gets the range from, along with the range.
+
+class gimple_outgoing_range
+{
+public:
+ gimple_outgoing_range (int max_sw_edges = INT_MAX);
+ ~gimple_outgoing_range ();
+ gimple *edge_range_p (irange &r, edge e);
+private:
+ void calc_switch_ranges (gswitch *sw);
+ bool switch_edge_range (irange &r, gswitch *sw, edge e);
+
+ int m_max_edges;
+ hash_map<edge, irange *> *m_edge_table;
+ class obstack_vrange_allocator *m_range_allocator;
+};
+
+// If there is a range control statement at the end of block BB, return it.
+gimple *gimple_outgoing_range_stmt_p (basic_block bb);
+// Return the range on edge E if it is from a GCOND. Either TRUE or FALSE.
+void gcond_edge_range (irange &r, edge e);
+
+#endif // GIMPLE_RANGE_EDGE_H