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       1                 :             : /* Header file for misc range functions. -*- C++ -*-
       2                 :             :    Copyright (C) 2017-2024 Free Software Foundation, Inc.
       3                 :             :    Contributed by Aldy Hernandez <aldyh@redhat.com>.
       4                 :             : 
       5                 :             : This file is part of GCC.
       6                 :             : 
       7                 :             : GCC is free software; you can redistribute it and/or modify it under
       8                 :             : the terms of the GNU General Public License as published by the Free
       9                 :             : Software Foundation; either version 3, or (at your option) any later
      10                 :             : version.
      11                 :             : 
      12                 :             : GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      13                 :             : WARRANTY; without even the implied warranty of MERCHANTABILITY or
      14                 :             : FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      15                 :             :  for more details.
      16                 :             : 
      17                 :             : You should have received a copy of the GNU General Public License
      18                 :             : along with GCC; see the file COPYING3.  If not see
      19                 :             : <http://www.gnu.org/licenses/>.  */
      20                 :             : 
      21                 :             : #ifndef GCC_RANGE_H
      22                 :             : #define GCC_RANGE_H
      23                 :             : 
      24                 :             : value_range range_zero (tree type);
      25                 :             : value_range range_nonzero (tree type);
      26                 :             : value_range range_positives (tree type);
      27                 :             : value_range range_negatives (tree type);
      28                 :             : 
      29                 :             : // Return an irange instance that is a boolean TRUE.
      30                 :             : 
      31                 :             : inline int_range<1>
      32                 :   154319591 : range_true (tree type = boolean_type_node)
      33                 :             : {
      34                 :   154319591 :   unsigned prec = TYPE_PRECISION (type);
      35                 :   154319669 :   return int_range<1> (type, wi::one (prec), wi::one (prec));
      36                 :             : }
      37                 :             : 
      38                 :             : // Return an irange instance that is a boolean FALSE.
      39                 :             : 
      40                 :             : inline int_range<1>
      41                 :   156594552 : range_false (tree type = boolean_type_node)
      42                 :             : {
      43                 :   156594552 :   unsigned prec = TYPE_PRECISION (type);
      44                 :   156594630 :   return int_range<1> (type, wi::zero (prec), wi::zero (prec));
      45                 :             : }
      46                 :             : 
      47                 :             : // Return an irange that covers both true and false.
      48                 :             : 
      49                 :             : inline int_range<1>
      50                 :    89299325 : range_true_and_false (tree type = boolean_type_node)
      51                 :             : {
      52                 :    89299325 :   unsigned prec = TYPE_PRECISION (type);
      53                 :    89299325 :   if (prec == 1)
      54                 :    57310350 :     return int_range<1> (type);
      55                 :    31989605 :   return int_range<1> (type, wi::zero (prec), wi::one (prec));
      56                 :             : }
      57                 :             : 
      58                 :             : #endif // GCC_RANGE_H