58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
/* Support routines for Value Range Propagation (VRP).
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Copyright (C) 2016-2022 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_GIMPLE_SSA_EVRP_ANALYZE_H
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#define GCC_GIMPLE_SSA_EVRP_ANALYZE_H
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class evrp_range_analyzer : public vr_values
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{
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public:
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evrp_range_analyzer (bool update_global_ranges);
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~evrp_range_analyzer (void)
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{
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stack.release ();
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}
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void enter (basic_block);
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void push_marker (void);
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void pop_to_marker (void);
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void leave (basic_block);
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void record_ranges_from_stmt (gimple *, bool);
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/* Record a new unwindable range. */
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void push_value_range (tree var, value_range_equiv *vr);
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private:
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DISABLE_COPY_AND_ASSIGN (evrp_range_analyzer);
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void pop_value_range ();
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value_range_equiv *try_find_new_range (tree, tree op, tree_code code,
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tree limit);
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void record_ranges_from_incoming_edge (basic_block);
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void record_ranges_from_phis (basic_block);
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void set_ssa_range_info (tree, value_range_equiv *);
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/* STACK holds the old VR. */
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auto_vec<std::pair <tree, value_range_equiv *> > stack;
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/* True if we are updating global ranges, false otherwise. */
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bool m_update_global_ranges;
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};
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#endif /* GCC_GIMPLE_SSA_EVRP_ANALYZE_H */
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