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       1                 :             : /* Misc range functions.
       2                 :             :    Copyright (C) 2017-2025 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                 :             : #include "config.h"
      22                 :             : #include "system.h"
      23                 :             : #include "coretypes.h"
      24                 :             : #include "backend.h"
      25                 :             : #include "tree.h"
      26                 :             : #include "gimple.h"
      27                 :             : #include "gimple-pretty-print.h"
      28                 :             : #include "fold-const.h"
      29                 :             : #include "ssa.h"
      30                 :             : #include "range.h"
      31                 :             : 
      32                 :             : int_range<2>
      33                 :       42356 : range_positives (tree type)
      34                 :             : {
      35                 :       42356 :   unsigned prec = TYPE_PRECISION (type);
      36                 :       42356 :   signop sign = TYPE_SIGN (type);
      37                 :       42356 :   return int_range<2> (type, wi::zero (prec), wi::max_value (prec, sign));
      38                 :             : }
      39                 :             : 
      40                 :             : int_range<2>
      41                 :     3248610 : range_negatives (tree type)
      42                 :             : {
      43                 :     3248610 :   unsigned prec = TYPE_PRECISION (type);
      44                 :     3248610 :   signop sign = TYPE_SIGN (type);
      45                 :     3248610 :   int_range<2> r;
      46                 :     3248610 :   if (sign == UNSIGNED)
      47                 :           0 :     r.set_undefined ();
      48                 :             :   else
      49                 :     3248624 :     r.set (type, wi::min_value (prec, sign), wi::minus_one (prec));
      50                 :     3248610 :   return r;
      51                 :             : }