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Diffstat (limited to 'lib/gcc/arm-none-eabi/13.2.1/plugin/include/gimple-range-edge.h')
-rw-r--r-- | lib/gcc/arm-none-eabi/13.2.1/plugin/include/gimple-range-edge.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/lib/gcc/arm-none-eabi/13.2.1/plugin/include/gimple-range-edge.h b/lib/gcc/arm-none-eabi/13.2.1/plugin/include/gimple-range-edge.h new file mode 100644 index 0000000..bb0de1b --- /dev/null +++ b/lib/gcc/arm-none-eabi/13.2.1/plugin/include/gimple-range-edge.h @@ -0,0 +1,58 @@ +/* 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 |