Line data    Source code

       1              : // RTL SSA predicate classes                                        -*- C++ -*-
       2              : // Copyright (C) 2024-2026 Free Software Foundation, Inc.
       3              : //
       4              : // This file is part of GCC.
       5              : //
       6              : // GCC is free software; you can redistribute it and/or modify it under
       7              : // the terms of the GNU General Public License as published by the Free
       8              : // Software Foundation; either version 3, or (at your option) any later
       9              : // version.
      10              : //
      11              : // GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      12              : // WARRANTY; without even the implied warranty of MERCHANTABILITY or
      13              : // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      14              : // for more details.
      15              : //
      16              : // You should have received a copy of the GNU General Public License
      17              : // along with GCC; see the file COPYING3.  If not see
      18              : // <http://www.gnu.org/licenses/>.
      19              : 
      20              : namespace rtl_ssa {
      21              : 
      22              : // Collects predicates that affect a scan over the IR, specifying what
      23              : // (if anything) should be ignored.
      24              : struct ignore_nothing
      25              : {
      26              :   // Return true if the scan should ignore the given definition
      27              :   // and all uses of the definition.
      28              :   bool should_ignore_def (const def_info *) { return false; }
      29              : 
      30              :   // Return true if the scan should ignore the given instruction.
      31              :   bool should_ignore_insn (const insn_info *) { return false; }
      32              : };
      33              : 
      34              : // Predicates that ignore the instruction passed to the constructor
      35              : // (and nothing else).
      36              : class ignore_insn : public ignore_nothing
      37              : {
      38              : public:
      39     49902319 :   ignore_insn (const insn_info *insn) : m_insn (insn) {}
      40    224398136 :   bool should_ignore_insn (const insn_info *insn) { return insn == m_insn; }
      41              : 
      42              : private:
      43              :   const insn_info *m_insn;
      44              : };
      45              : 
      46              : // Predicates that ignore all the instructions being changed by a set
      47              : // of insn_changes.
      48              : class ignore_changing_insns : public ignore_nothing
      49              : {
      50              : public:
      51              :   ignore_changing_insns (array_slice<insn_change *const>);
      52              :   bool should_ignore_insn (const insn_info *);
      53              : 
      54              : private:
      55              :   array_slice<insn_change *const> m_changes;
      56              : };
      57              : 
      58              : }