| /* Support routines for value ranges with equivalences. |
| Copyright (C) 2020-2022 Free Software Foundation, Inc. |
| |
| 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_VALUE_RANGE_EQUIV_H |
| #define GCC_VALUE_RANGE_EQUIV_H |
| |
| #include "value-range.h" |
| |
| /* Note value_range_equiv cannot currently be used with GC memory, |
| only value_range is fully set up for this. */ |
| class GTY((user)) value_range_equiv : public value_range |
| { |
| public: |
| value_range_equiv () : value_range () { m_equiv = NULL; } |
| value_range_equiv (const value_range &); |
| /* Deep-copies equiv bitmap argument. */ |
| value_range_equiv (tree, tree, bitmap = NULL, value_range_kind = VR_RANGE); |
| |
| /* Shallow-copies equiv bitmap. */ |
| value_range_equiv (const value_range_equiv &) /* = delete */; |
| /* Shallow-copies equiv bitmap. */ |
| value_range_equiv& operator=(const value_range_equiv &) /* = delete */; |
| |
| /* Virtual destructor. */ |
| virtual ~value_range_equiv () = default; |
| |
| /* Move equiv bitmap from source range. */ |
| void move (value_range_equiv *); |
| |
| /* Leaves equiv bitmap alone. */ |
| virtual void set (tree, tree, value_range_kind = VR_RANGE) override; |
| void update (tree, tree, value_range_kind = VR_RANGE); |
| /* Deep-copies equiv bitmap argument. */ |
| void set (tree, tree, bitmap, value_range_kind = VR_RANGE); |
| void set (tree); |
| |
| bool operator== (const value_range_equiv &) const /* = delete */; |
| bool operator!= (const value_range_equiv &) const /* = delete */; |
| void legacy_verbose_intersect (const value_range_equiv *); |
| void legacy_verbose_union_ (const value_range_equiv *); |
| bool equal_p (const value_range_equiv &, bool ignore_equivs) const; |
| |
| /* Types of value ranges. */ |
| void set_undefined () override; |
| void set_varying (tree) override; |
| |
| /* Equivalence bitmap methods. */ |
| bitmap equiv () const { return m_equiv; } |
| void equiv_clear (); |
| void equiv_add (const_tree, const value_range_equiv *, |
| bitmap_obstack * = NULL); |
| |
| /* Misc methods. */ |
| void deep_copy (const value_range_equiv *); |
| void dump (FILE *) const; |
| void dump () const; |
| static bool supports_p (tree type) |
| { |
| return INTEGRAL_TYPE_P (type) || POINTER_TYPE_P (type); |
| } |
| |
| private: |
| /* Deep-copies bitmap argument. */ |
| void set_equiv (bitmap); |
| void check (); |
| |
| /* Set of SSA names whose value ranges are equivalent to this one. |
| This set is only valid when TYPE is VR_RANGE or VR_ANTI_RANGE. */ |
| bitmap m_equiv; |
| }; |
| |
| extern void dump_value_range (FILE *, const value_range_equiv *); |
| |
| #endif // GCC_VALUE_RANGE_EQUIV_H |