104 lines
3.8 KiB
C
104 lines
3.8 KiB
C
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/* Header file for the GIMPLE range interface.
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Copyright (C) 2019-2023 Free Software Foundation, Inc.
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Contributed by Andrew MacLeod <amacleod@redhat.com>
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and Aldy Hernandez <aldyh@redhat.com>.
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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 it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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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_RANGE_H
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#define GCC_GIMPLE_RANGE_H
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#include "range.h"
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#include "value-query.h"
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#include "gimple-range-op.h"
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#include "gimple-range-trace.h"
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#include "gimple-range-edge.h"
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#include "gimple-range-fold.h"
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#include "gimple-range-gori.h"
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#include "gimple-range-cache.h"
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// This is the basic range generator interface.
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//
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// This base class provides all the API entry points, but only provides
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// functionality at the statement level. Ie, it can calculate ranges on
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// statements, but does no additional lookup.
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//
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// All the range_of_* methods will return a range if the types is
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// supported by the range engine. It may be the full range for the
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// type, AKA varying_p or it may be a refined range. If the range
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// type is not supported, then false is returned. Non-statement
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// related methods return whatever the current global value is.
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class gimple_ranger : public range_query
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{
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public:
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gimple_ranger (bool use_imm_uses = true);
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~gimple_ranger ();
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virtual bool range_of_stmt (vrange &r, gimple *, tree name = NULL) override;
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virtual bool range_of_expr (vrange &r, tree name, gimple * = NULL) override;
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virtual bool range_on_edge (vrange &r, edge e, tree name) override;
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virtual void update_stmt (gimple *) override;
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void range_on_entry (vrange &r, basic_block bb, tree name);
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void range_on_exit (vrange &r, basic_block bb, tree name);
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void export_global_ranges ();
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inline gori_compute &gori () { return m_cache.m_gori; }
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virtual void dump (FILE *f) override;
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void debug ();
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void dump_bb (FILE *f, basic_block bb);
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auto_edge_flag non_executable_edge_flag;
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bool fold_stmt (gimple_stmt_iterator *gsi, tree (*) (tree));
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void register_inferred_ranges (gimple *s);
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void register_transitive_inferred_ranges (basic_block bb);
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protected:
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bool fold_range_internal (vrange &r, gimple *s, tree name);
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void prefill_name (vrange &r, tree name);
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void prefill_stmt_dependencies (tree ssa);
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ranger_cache m_cache;
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range_tracer tracer;
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basic_block current_bb;
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vec<tree> m_stmt_list;
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friend class path_range_query;
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};
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/* Create a new ranger instance and associate it with a function.
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Each call must be paired with a call to disable_ranger to release
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resources. If USE_IMM_USES is true, pre-calculate side effects like
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non-null uses as required using the immediate use chains. */
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extern gimple_ranger *enable_ranger (struct function *m,
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bool use_imm_uses = true);
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extern void disable_ranger (struct function *);
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class assume_query : public range_query
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{
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public:
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assume_query ();
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bool assume_range_p (vrange &r, tree name);
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virtual bool range_of_expr (vrange &r, tree expr, gimple * = NULL);
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void dump (FILE *f);
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protected:
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void calculate_stmt (gimple *s, vrange &lhs_range, fur_source &src);
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void calculate_op (tree op, gimple *s, vrange &lhs, fur_source &src);
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void calculate_phi (gphi *phi, vrange &lhs_range, fur_source &src);
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void check_taken_edge (edge e, fur_source &src);
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ssa_global_cache global;
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gori_compute m_gori;
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};
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#endif // GCC_GIMPLE_RANGE_H
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