LCOV - code coverage report
Current view: top level - gcc - value-range.h (source / functions) Coverage Total Hit
Test: gcc.info Lines: 94.5 % 561 530
Test Date: 2026-02-28 14:20:25 Functions: 79.1 % 129 102
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            Line data    Source code
       1              : /* Support routines for value ranges.
       2              :    Copyright (C) 2019-2026 Free Software Foundation, Inc.
       3              :    Contributed by Aldy Hernandez <aldyh@redhat.com> and
       4              :    Andrew Macleod <amacleod@redhat.com>.
       5              : 
       6              : This file is part of GCC.
       7              : 
       8              : GCC is free software; you can redistribute it and/or modify
       9              : it under the terms of the GNU General Public License as published by
      10              : the Free Software Foundation; either version 3, or (at your option)
      11              : any later version.
      12              : 
      13              : GCC is distributed in the hope that it will be useful,
      14              : but WITHOUT ANY WARRANTY; without even the implied warranty of
      15              : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      16              : GNU General Public License for more details.
      17              : 
      18              : You should have received a copy of the GNU General Public License
      19              : along with GCC; see the file COPYING3.  If not see
      20              : <http://www.gnu.org/licenses/>.  */
      21              : 
      22              : #ifndef GCC_VALUE_RANGE_H
      23              : #define GCC_VALUE_RANGE_H
      24              : 
      25              : class irange;
      26              : 
      27              : // Types of value ranges.
      28              : enum value_range_kind
      29              : {
      30              :   /* Empty range.  */
      31              :   VR_UNDEFINED,
      32              :   /* Range spans the entire domain.  */
      33              :   VR_VARYING,
      34              :   /* Range is [MIN, MAX].  */
      35              :   VR_RANGE,
      36              :   /* Range is ~[MIN, MAX].  */
      37              :   VR_ANTI_RANGE,
      38              :   /* Range is a NAN.  */
      39              :   VR_NAN,
      40              :   /* Range is a nice guy.  */
      41              :   VR_LAST
      42              : };
      43              : 
      44              : // Discriminator between different vrange types.
      45              : 
      46              : enum value_range_discriminator
      47              : {
      48              :   // Range holds an integer or pointer.
      49              :   VR_IRANGE,
      50              :   // Pointer range.
      51              :   VR_PRANGE,
      52              :   // Floating point range.
      53              :   VR_FRANGE,
      54              :   // Range holds an unsupported type.
      55              :   VR_UNKNOWN
      56              : };
      57              : 
      58              : // Abstract class for representing subsets of values for various
      59              : // supported types, such as the possible values of a variable.
      60              : //
      61              : // There are subclasses for each of integer, floating point, and pointer
      62              : // types, each with their own strategies for efficiently representing
      63              : // subsets of values.
      64              : //
      65              : // For efficiency, we can't precisely represent any arbitrary subset
      66              : // of values of a type (which could require 2^N bits for a type of size N)
      67              : // Hence operations on the subclasses may introduce imprecision
      68              : // due to over-approximating the possible subsets.
      69              : //
      70              : // To query what types ranger and the entire ecosystem can support,
      71              : // use value_range::supports_type_p(tree type).  This is a static
      72              : // method available independently of any vrange object.
      73              : //
      74              : // To query what a given vrange variant can support, use:
      75              : //    irange::supports_p ()
      76              : //    frange::supports_p ()
      77              : //    etc
      78              : //
      79              : // To query what a range object can support, use:
      80              : //    void foo (vrange &v, irange &i, frange &f)
      81              : //    {
      82              : //      if (v.supports_type_p (type)) ...
      83              : //      if (i.supports_type_p (type)) ...
      84              : //      if (f.supports_type_p (type)) ...
      85              : //    }
      86              : 
      87              : class vrange
      88              : {
      89              :   template <typename T> friend bool is_a (vrange &);
      90              :   friend class value_range;
      91              :   friend void streamer_write_vrange (struct output_block *, const vrange &);
      92              :   friend class range_op_handler;
      93              : public:
      94              :   virtual void accept (const class vrange_visitor &v) const = 0;
      95              :   virtual void set (tree, tree, value_range_kind = VR_RANGE) = 0;
      96              :   virtual tree type () const = 0;
      97              :   virtual bool supports_type_p (const_tree type) const = 0;
      98              :   virtual void set_varying (tree type) = 0;
      99              :   virtual void set_undefined () = 0;
     100              :   virtual bool union_ (const vrange &) = 0;
     101              :   virtual bool intersect (const vrange &) = 0;
     102              :   virtual bool singleton_p (tree *result = NULL) const = 0;
     103              :   virtual bool contains_p (tree cst) const = 0;
     104              :   virtual bool zero_p () const = 0;
     105              :   virtual bool nonzero_p () const = 0;
     106              :   virtual void set_nonzero (tree type) = 0;
     107              :   virtual void set_zero (tree type) = 0;
     108              :   virtual void set_nonnegative (tree type) = 0;
     109              :   virtual bool fits_p (const vrange &r) const = 0;
     110   5230017198 :   virtual ~vrange () { }
     111              :   virtual tree lbound () const = 0;
     112              :   virtual tree ubound () const = 0;
     113              :   virtual void update_bitmask (const class irange_bitmask &);
     114              :   virtual irange_bitmask get_bitmask () const;
     115              :   wide_int get_nonzero_bits () const;
     116              :   void set_nonzero_bits (const wide_int &bits);
     117              : 
     118              :   bool varying_p () const;
     119              :   bool undefined_p () const;
     120              :   vrange& operator= (const vrange &);
     121              :   bool operator== (const vrange &) const;
     122     14238051 :   bool operator!= (const vrange &r) const { return !(*this == r); }
     123              :   void dump (FILE *) const;
     124            0 :   virtual void verify_range () const { }
     125              : protected:
     126   6582220132 :   vrange (enum value_range_discriminator d) : m_discriminator (d) { }
     127              :   ENUM_BITFIELD(value_range_kind) m_kind : 8;
     128              :   const ENUM_BITFIELD(value_range_discriminator) m_discriminator : 4;
     129              : };
     130              : 
     131              : namespace inchash
     132              : {
     133              :   extern void add_vrange (const vrange &, hash &, unsigned flags = 0);
     134              : }
     135              : 
     136              : // A pair of values representing the known bits of a value.  Zero bits
     137              : // in MASK cover constant values.  Set bits in MASK cover unknown
     138              : // values.  VALUE are the known bits for the bits where MASK is zero,
     139              : // and must be zero for the unknown bits where MASK is set (needed as an
     140              : // optimization of union and intersect)
     141              : // For example:
     142              : // VALUE: [..., 0, 1, 0]
     143              : // MASK:  [..., 1, 0, 0]
     144              : //              ^  ^  ^
     145              : //              |  |  known bit: {0}
     146              : //              |  known bit: {1}
     147              : //              unknown bit: {0, 1}
     148              : 
     149              : class irange_bitmask
     150              : {
     151              : public:
     152   6343057150 :   irange_bitmask () { /* uninitialized */ }
     153            0 :   irange_bitmask (unsigned prec) { set_unknown (prec); }
     154              :   irange_bitmask (const wide_int &value, const wide_int &mask);
     155              :   irange_bitmask (tree type, const wide_int &min, const wide_int &max);
     156              : 
     157   1563393927 :   wide_int value () const { return m_value; }
     158   1883873195 :   wide_int mask () const { return m_mask; }
     159              :   void set_unknown (unsigned prec);
     160              :   bool unknown_p () const;
     161              :   unsigned get_precision () const;
     162              :   void union_ (const irange_bitmask &src);
     163              :   bool intersect (const irange_bitmask &src);
     164              :   bool operator== (const irange_bitmask &src) const;
     165              :   bool operator!= (const irange_bitmask &src) const { return !(*this == src); }
     166              :   void verify_mask () const;
     167              :   void dump (FILE *) const;
     168              :   bool range_from_mask (irange &r, tree type) const;
     169              : 
     170              :   bool member_p (const wide_int &val) const;
     171              : 
     172              :   // Convenience functions for nonzero bitmask compatibility.
     173              :   wide_int get_nonzero_bits () const;
     174              :   void set_nonzero_bits (const wide_int &bits);
     175              : private:
     176              :   wide_int m_value;
     177              :   wide_int m_mask;
     178              : };
     179              : 
     180              : inline void
     181   3161129154 : irange_bitmask::set_unknown (unsigned prec)
     182              : {
     183   3161129154 :   m_value = wi::zero (prec);
     184   3161129154 :   m_mask = wi::minus_one (prec);
     185   3161129154 :   if (flag_checking)
     186   3161115590 :     verify_mask ();
     187   3161129154 : }
     188              : 
     189              : // Return TRUE if THIS does not have any meaningful information.
     190              : 
     191              : inline bool
     192   4811396636 : irange_bitmask::unknown_p () const
     193              : {
     194   2165897779 :   return m_mask == -1;
     195              : }
     196              : 
     197              : inline
     198   1256010808 : irange_bitmask::irange_bitmask (const wide_int &value, const wide_int &mask)
     199              : {
     200   1256010808 :   m_value = value;
     201   1256010808 :   m_mask = mask;
     202   1256010808 :   if (flag_checking)
     203   1256006732 :     verify_mask ();
     204   1256010808 : }
     205              : 
     206              : inline unsigned
     207              : irange_bitmask::get_precision () const
     208              : {
     209              :   return m_mask.get_precision ();
     210              : }
     211              : 
     212              : // The following two functions are meant for backwards compatability
     213              : // with the nonzero bitmask.  A cleared bit means the value must be 0.
     214              : // A set bit means we have no information for the bit.
     215              : 
     216              : // Return the nonzero bits.
     217              : inline wide_int
     218         4013 : irange_bitmask::get_nonzero_bits () const
     219              : {
     220         4013 :   return m_value | m_mask;
     221              : }
     222              : 
     223              : // Set the bitmask to the nonzero bits in BITS.
     224              : inline void
     225              : irange_bitmask::set_nonzero_bits (const wide_int &bits)
     226              : {
     227              :   m_value = wi::zero (bits.get_precision ());
     228              :   m_mask = bits;
     229              :   if (flag_checking)
     230              :     verify_mask ();
     231              : }
     232              : 
     233              : // Return TRUE if val could be a valid value with this bitmask.
     234              : 
     235              : inline bool
     236    256423992 : irange_bitmask::member_p (const wide_int &val) const
     237              : {
     238    256423992 :   if (unknown_p ())
     239              :     return true;
     240     29778028 :   wide_int res = m_mask & val;
     241     29778028 :   if (m_value != 0)
     242       876675 :     res |= ~m_mask & m_value;
     243     29778028 :   return res == val;
     244     29778028 : }
     245              : 
     246              : inline bool
     247   1203973301 : irange_bitmask::operator== (const irange_bitmask &src) const
     248              : {
     249   1203973301 :   bool unknown1 = unknown_p ();
     250   1203973301 :   bool unknown2 = src.unknown_p ();
     251   1203973301 :   if (unknown1 || unknown2)
     252    918865880 :     return unknown1 == unknown2;
     253    285107421 :   return m_value == src.m_value && m_mask == src.m_mask;
     254              : }
     255              : 
     256              : inline void
     257     19420140 : irange_bitmask::union_ (const irange_bitmask &src)
     258              : {
     259     19420196 :   m_mask = (m_mask | src.m_mask) | (m_value ^ src.m_value);
     260     19420140 :   m_value = m_value & src.m_value;
     261     19420140 :   if (flag_checking)
     262     19420140 :     verify_mask ();
     263     19420140 : }
     264              : 
     265              : // Return FALSE if the bitmask intersection is undefined.
     266              : 
     267              : inline bool
     268    802475084 : irange_bitmask::intersect (const irange_bitmask &src)
     269              : {
     270              :   // If we have two known bits that are incompatible, the resulting
     271              :   // bit and therefore entire range is undefined.  Return FALSE.
     272   1604953898 :   if (wi::bit_and (~(m_mask | src.m_mask),
     273   2407425252 :                    m_value ^ src.m_value) != 0)
     274              :     return false;
     275              :   else
     276              :     {
     277    802431111 :       m_mask = m_mask & src.m_mask;
     278    802431111 :       m_value = m_value | src.m_value;
     279              :     }
     280    802431111 :   if (flag_checking)
     281    802428352 :     verify_mask ();
     282              :   return true;
     283              : }
     284              : 
     285              : // A subset of possible values for an integer type, leaving
     286              : // allocation of storage to subclasses.
     287              : 
     288  10351372720 : class irange : public vrange
     289              : {
     290              :   friend class irange_storage;
     291              :   friend class vrange_printer;
     292              : public:
     293              :   // In-place setters.
     294              :   void set (tree type, const wide_int &, const wide_int &,
     295              :             value_range_kind = VR_RANGE);
     296              :   virtual void set_nonzero (tree type) override;
     297              :   virtual void set_zero (tree type) override;
     298              :   virtual void set_nonnegative (tree type) override;
     299              :   virtual void set_varying (tree type) override;
     300              :   virtual void set_undefined () override;
     301              : 
     302              :   // Range types.
     303              :   static bool supports_p (const_tree type);
     304              :   virtual bool supports_type_p (const_tree type) const override;
     305              :   virtual tree type () const override;
     306              : 
     307              :   // Iteration over sub-ranges.
     308              :   unsigned num_pairs () const;
     309              :   wide_int lower_bound (unsigned = 0) const;
     310              :   wide_int upper_bound (unsigned) const;
     311              :   wide_int upper_bound () const;
     312              :   virtual tree lbound () const override;
     313              :   virtual tree ubound () const override;
     314              : 
     315              :   // Predicates.
     316              :   virtual bool zero_p () const override;
     317              :   virtual bool nonzero_p () const override;
     318              :   virtual bool singleton_p (tree *result = NULL) const override;
     319              :   bool singleton_p (wide_int &) const;
     320              :   bool contains_p (const wide_int &) const;
     321              :   bool nonnegative_p () const;
     322              :   bool nonpositive_p () const;
     323              : 
     324              :   // In-place operators.
     325              :   virtual bool union_ (const vrange &) override;
     326              :   virtual bool intersect (const vrange &) override;
     327              :   void invert ();
     328              : 
     329              :   // Operator overloads.
     330              :   irange& operator= (const irange &);
     331              :   bool operator== (const irange &) const;
     332              :   bool operator!= (const irange &r) const { return !(*this == r); }
     333              : 
     334              :   // Misc methods.
     335              :   virtual bool fits_p (const vrange &r) const override;
     336              :   virtual void accept (const vrange_visitor &v) const override;
     337              : 
     338              :   virtual void update_bitmask (const class irange_bitmask &) override;
     339              :   virtual irange_bitmask get_bitmask () const override;
     340              : 
     341              :   virtual void verify_range () const override;
     342              : protected:
     343              :   void maybe_resize (int needed);
     344              :   virtual void set (tree, tree, value_range_kind = VR_RANGE) override;
     345              :   virtual bool contains_p (tree cst) const override;
     346              :   irange (wide_int *, unsigned nranges, bool resizable);
     347              : 
     348              :    // In-place operators.
     349              :   bool irange_contains_p (const irange &) const;
     350              :   bool irange_single_pair_union (const irange &r);
     351              : 
     352              :   void normalize_kind ();
     353              : 
     354              : 
     355              :   // Hard limit on max ranges allowed.
     356              :   static const int HARD_MAX_RANGES = 255;
     357              : private:
     358              :   bool varying_compatible_p () const;
     359              :   bool intersect_bitmask (const irange &r);
     360              :   bool union_bitmask (const irange &r);
     361              :   bool set_range_from_bitmask ();
     362              :   bool snap_subranges ();
     363              :   bool snap (const wide_int &, const wide_int &, wide_int &, wide_int &,
     364              :              bool &);
     365              : 
     366              :   bool intersect (const wide_int& lb, const wide_int& ub);
     367              :   bool union_append (const irange &r);
     368              :   unsigned char m_num_ranges;
     369              :   bool m_resizable;
     370              :   unsigned char m_max_ranges;
     371              :   tree m_type;
     372              :   irange_bitmask m_bitmask;
     373              : protected:
     374              :   wide_int *m_base;
     375              : };
     376              : 
     377              : // Here we describe an irange with N pairs of ranges.  The storage for
     378              : // the pairs is embedded in the class as an array.
     379              : //
     380              : // If RESIZABLE is true, the storage will be resized on the heap when
     381              : // the number of ranges needed goes past N up to a max of
     382              : // HARD_MAX_RANGES.  This new storage is freed upon destruction.
     383              : 
     384              : template<unsigned N, bool RESIZABLE = false>
     385              : class int_range final : public irange
     386              : {
     387              : public:
     388              :   int_range ();
     389              :   int_range (tree type, const wide_int &, const wide_int &,
     390              :              value_range_kind = VR_RANGE);
     391              :   int_range (tree type);
     392              :   int_range (const int_range &);
     393              :   int_range (const irange &);
     394              :   ~int_range () final override;
     395              :   int_range& operator= (const int_range &);
     396              : protected:
     397              :   int_range (tree, tree, value_range_kind = VR_RANGE);
     398              : private:
     399              :   wide_int m_ranges[N*2];
     400              : };
     401              : 
     402              : class prange final : public vrange
     403              : {
     404              :   friend class prange_storage;
     405              :   friend class vrange_printer;
     406              : public:
     407              :   prange ();
     408              :   prange (const prange &);
     409              :   prange (tree type);
     410              :   prange (tree type, const wide_int &, const wide_int &,
     411              :           value_range_kind = VR_RANGE);
     412              :   static bool supports_p (const_tree type);
     413              :   virtual bool supports_type_p (const_tree type) const final override;
     414              :   virtual void accept (const vrange_visitor &v) const final override;
     415              :   virtual void set_undefined () final override;
     416              :   virtual void set_varying (tree type) final override;
     417              :   virtual void set_nonzero (tree type) final override;
     418              :   virtual void set_zero (tree type) final override;
     419              :   virtual void set_nonnegative (tree type) final override;
     420              :   virtual bool contains_p (tree cst) const final override;
     421              :   virtual bool fits_p (const vrange &v) const final override;
     422              :   virtual bool singleton_p (tree *result = NULL) const final override;
     423              :   virtual bool zero_p () const final override;
     424              :   virtual bool nonzero_p () const final override;
     425              :   virtual void set (tree, tree, value_range_kind = VR_RANGE) final override;
     426              :   virtual tree type () const final override;
     427              :   virtual bool union_ (const vrange &v) final override;
     428              :   virtual bool intersect (const vrange &v) final override;
     429              :   virtual tree lbound () const final override;
     430              :   virtual tree ubound () const final override;
     431              : 
     432              :   prange& operator= (const prange &);
     433              :   bool operator== (const prange &) const;
     434              :   void set (tree type, const wide_int &, const wide_int &,
     435              :             value_range_kind = VR_RANGE);
     436              :   void invert ();
     437              :   bool contains_p (const wide_int &) const;
     438              :   wide_int lower_bound () const;
     439              :   wide_int upper_bound () const;
     440              :   virtual void verify_range () const final override;
     441              :   irange_bitmask get_bitmask () const final override;
     442              :   void update_bitmask (const irange_bitmask &) final override;
     443              : protected:
     444              :   bool varying_compatible_p () const;
     445              : 
     446              :   tree m_type;
     447              :   wide_int m_min;
     448              :   wide_int m_max;
     449              :   irange_bitmask m_bitmask;
     450              : };
     451              : 
     452              : // Unsupported temporaries may be created by ranger before it's known
     453              : // they're unsupported, or by vr_values::get_value_range.
     454              : 
     455            0 : class unsupported_range : public vrange
     456              : {
     457              : public:
     458     70728794 :   unsupported_range ()
     459     70728794 :     : vrange (VR_UNKNOWN)
     460              :   {
     461     70728794 :     set_undefined ();
     462              :   }
     463       865181 :   unsupported_range (const unsupported_range &src)
     464       865181 :     : vrange (VR_UNKNOWN)
     465              :   {
     466       865181 :     unsupported_range::operator= (src);
     467              :   }
     468              :   void set (tree min, tree, value_range_kind = VR_RANGE) final override;
     469              :   tree type () const final override;
     470              :   bool supports_type_p (const_tree) const final override;
     471              :   void set_varying (tree) final override;
     472              :   void set_undefined () final override;
     473              :   void accept (const vrange_visitor &v) const final override;
     474              :   bool union_ (const vrange &r) final override;
     475              :   bool intersect (const vrange &r) final override;
     476              :   bool singleton_p (tree * = NULL) const final override;
     477              :   bool contains_p (tree) const final override;
     478              :   bool zero_p () const final override;
     479              :   bool nonzero_p () const final override;
     480              :   void set_nonzero (tree type) final override;
     481              :   void set_zero (tree type) final override;
     482              :   void set_nonnegative (tree type) final override;
     483              :   bool fits_p (const vrange &) const final override;
     484              :   unsupported_range& operator= (const unsupported_range &r);
     485              :   tree lbound () const final override;
     486              :   tree ubound () const final override;
     487              : };
     488              : 
     489              : // The possible NAN state of a floating point value as an opaque object.
     490              : // This represents one of the four subsets of { -NaN, +NaN },
     491              : // i.e. one of {}, { -NaN }, { +NaN}, or { -NaN, +NaN }.
     492              : 
     493              : class nan_state
     494              : {
     495              : public:
     496              :   nan_state (bool);
     497              :   nan_state (bool pos_nan, bool neg_nan);
     498              :   bool neg_p () const;
     499              :   bool pos_p () const;
     500              : private:
     501              :   bool m_pos_nan;
     502              :   bool m_neg_nan;
     503              : };
     504              : 
     505              : // Set NAN state to +-NAN if NAN_P is true.  Otherwise set NAN state
     506              : // to false.
     507              : 
     508              : inline
     509     66902954 : nan_state::nan_state (bool nan_p)
     510              : {
     511     66902954 :   m_pos_nan = nan_p;
     512     62514643 :   m_neg_nan = nan_p;
     513              : }
     514              : 
     515              : // Constructor initializing the object to +NAN if POS_NAN is set, -NAN
     516              : // if NEG_NAN is set, or +-NAN if both are set.  Otherwise POS_NAN and
     517              : // NEG_NAN are clear, and the object cannot be a NAN.
     518              : 
     519              : inline
     520      4113801 : nan_state::nan_state (bool pos_nan, bool neg_nan)
     521              : {
     522      4113801 :   m_pos_nan = pos_nan;
     523      4099148 :   m_neg_nan = neg_nan;
     524              : }
     525              : 
     526              : // Return if +NAN is possible.
     527              : 
     528              : inline bool
     529     37469062 : nan_state::pos_p () const
     530              : {
     531     37469038 :   return m_pos_nan;
     532              : }
     533              : 
     534              : // Return if -NAN is possible.
     535              : 
     536              : inline bool
     537     37301194 : nan_state::neg_p () const
     538              : {
     539     37301170 :   return m_neg_nan;
     540              : }
     541              : 
     542              : // A subset of possible values for a floating point type.
     543              : //
     544              : // The representation is a type with a couple of endpoints, unioned
     545              : // with a subset of { -NaN, +NaN }.
     546              : 
     547     52138801 : class frange final : public vrange
     548              : {
     549              :   friend class frange_storage;
     550              :   friend class vrange_printer;
     551              : public:
     552              :   frange ();
     553              :   frange (const frange &);
     554              :   frange (tree, tree, value_range_kind = VR_RANGE);
     555              :   frange (tree type);
     556              :   frange (tree type, const REAL_VALUE_TYPE &min, const REAL_VALUE_TYPE &max,
     557              :           value_range_kind = VR_RANGE);
     558    652627262 :   static bool supports_p (const_tree type)
     559              :   {
     560              :     // ?? Decimal floats can have multiple representations for the
     561              :     // same number.  Supporting them may be as simple as just
     562              :     // disabling them in singleton_p.  No clue.
     563    652627262 :     return SCALAR_FLOAT_TYPE_P (type) && !DECIMAL_FLOAT_TYPE_P (type);
     564              :   }
     565              :   virtual tree type () const override;
     566              :   void set (tree type, const REAL_VALUE_TYPE &, const REAL_VALUE_TYPE &,
     567              :             value_range_kind = VR_RANGE);
     568              :   void set (tree type, const REAL_VALUE_TYPE &, const REAL_VALUE_TYPE &,
     569              :             const nan_state &, value_range_kind = VR_RANGE);
     570              :   void set_nan (tree type);
     571              :   void set_nan (tree type, bool sign);
     572              :   void set_nan (tree type, const nan_state &);
     573              :   virtual void set_varying (tree type) override;
     574              :   virtual void set_undefined () override;
     575              :   virtual bool union_ (const vrange &) override;
     576              :   virtual bool intersect (const vrange &) override;
     577              :   bool contains_p (const REAL_VALUE_TYPE &) const;
     578              :   virtual bool singleton_p (tree *result = NULL) const override;
     579              :   bool singleton_p (REAL_VALUE_TYPE &r) const;
     580              :   virtual bool supports_type_p (const_tree type) const override;
     581              :   virtual void accept (const vrange_visitor &v) const override;
     582              :   virtual bool zero_p () const override;
     583              :   virtual bool nonzero_p () const override;
     584              :   virtual void set_nonzero (tree type) override;
     585              :   virtual void set_zero (tree type) override;
     586              :   virtual void set_nonnegative (tree type) override;
     587              :   virtual bool fits_p (const vrange &) const override;
     588              :   frange& operator= (const frange &);
     589              :   bool operator== (const frange &) const;
     590           12 :   bool operator!= (const frange &r) const { return !(*this == r); }
     591              :   const REAL_VALUE_TYPE &lower_bound () const;
     592              :   const REAL_VALUE_TYPE &upper_bound () const;
     593              :   virtual tree lbound () const override;
     594              :   virtual tree ubound () const override;
     595              :   nan_state get_nan_state () const;
     596              :   void update_nan ();
     597              :   void update_nan (bool sign);
     598              :   void update_nan (tree) = delete; // Disallow silent conversion to bool.
     599              :   void update_nan (const nan_state &);
     600              :   void clear_nan ();
     601              :   void flush_denormals_to_zero ();
     602              : 
     603              :   // fpclassify like API
     604              :   bool known_isfinite () const;
     605              :   bool known_isnan () const;
     606              :   bool known_isinf () const;
     607              :   bool maybe_isnan () const;
     608              :   bool maybe_isnan (bool sign) const;
     609              :   bool maybe_isinf () const;
     610              :   bool signbit_p (bool &signbit) const;
     611              :   bool nan_signbit_p (bool &signbit) const;
     612              :   bool known_isnormal () const;
     613              :   bool known_isdenormal_or_zero () const;
     614              :   virtual void verify_range () const override;
     615              : protected:
     616              :   virtual bool contains_p (tree cst) const override;
     617              :   virtual void set (tree, tree, value_range_kind = VR_RANGE) override;
     618              : 
     619              : private:
     620              :   bool internal_singleton_p (REAL_VALUE_TYPE * = NULL) const;
     621              :   bool normalize_kind ();
     622              :   bool union_nans (const frange &);
     623              :   bool intersect_nans (const frange &);
     624              :   bool combine_zeros (const frange &, bool union_p);
     625              : 
     626              :   tree m_type;
     627              :   REAL_VALUE_TYPE m_min;
     628              :   REAL_VALUE_TYPE m_max;
     629              :   bool m_pos_nan;
     630              :   bool m_neg_nan;
     631              : };
     632              : 
     633              : inline const REAL_VALUE_TYPE &
     634     22022970 : frange::lower_bound () const
     635              : {
     636     22022970 :   gcc_checking_assert (!undefined_p () && !known_isnan ());
     637     22022970 :   return m_min;
     638              : }
     639              : 
     640              : inline const REAL_VALUE_TYPE &
     641     20599729 : frange::upper_bound () const
     642              : {
     643     20599729 :   gcc_checking_assert (!undefined_p () && !known_isnan ());
     644     20599729 :   return m_max;
     645              : }
     646              : 
     647              : // Return the NAN state.
     648              : 
     649              : inline nan_state
     650      1919002 : frange::get_nan_state () const
     651              : {
     652      1919002 :   return nan_state (m_pos_nan, m_neg_nan);
     653              : }
     654              : 
     655              : // is_a<> and as_a<> implementation for vrange.
     656              : 
     657              : // Anything we haven't specialized is a hard fail.
     658              : template <typename T>
     659              : inline bool
     660              : is_a (vrange &)
     661              : {
     662              :   gcc_unreachable ();
     663              :   return false;
     664              : }
     665              : 
     666              : template <typename T>
     667              : inline bool
     668   4359226509 : is_a (const vrange &v)
     669              : {
     670              :   // Reuse is_a <vrange> to implement the const version.
     671   4538891405 :   const T &derived = static_cast<const T &> (v);
     672   1976476558 :   return is_a <T> (const_cast<T &> (derived));
     673              : }
     674              : 
     675              : template <typename T>
     676              : inline T &
     677   2344594092 : as_a (vrange &v)
     678              : {
     679            0 :   gcc_checking_assert (is_a <T> (v));
     680   2344594092 :   return static_cast <T &> (v);
     681              : }
     682              : 
     683              : template <typename T>
     684              : inline const T &
     685   3737232578 : as_a (const vrange &v)
     686              : {
     687            0 :   gcc_checking_assert (is_a <T> (v));
     688   3737232578 :   return static_cast <const T &> (v);
     689              : }
     690              : 
     691              : // Specializations for the different range types.
     692              : 
     693              : template <>
     694              : inline bool
     695   7273006582 : is_a <irange> (vrange &v)
     696              : {
     697   7143945902 :   return v.m_discriminator == VR_IRANGE;
     698              : }
     699              : 
     700              : template <>
     701              : inline bool
     702    952073977 : is_a <prange> (vrange &v)
     703              : {
     704    952073977 :   return v.m_discriminator == VR_PRANGE;
     705              : }
     706              : 
     707              : template <>
     708              : inline bool
     709    198892595 : is_a <frange> (vrange &v)
     710              : {
     711    198892595 :   return v.m_discriminator == VR_FRANGE;
     712              : }
     713              : 
     714              : template <>
     715              : inline bool
     716       865181 : is_a <unsupported_range> (vrange &v)
     717              : {
     718       865181 :   return v.m_discriminator == VR_UNKNOWN;
     719              : }
     720              : 
     721              : // For resizable ranges, resize the range up to HARD_MAX_RANGES if the
     722              : // NEEDED pairs is greater than the current capacity of the range.
     723              : 
     724              : inline void
     725   1347777885 : irange::maybe_resize (int needed)
     726              : {
     727   1347777885 :   if (!m_resizable || m_max_ranges == HARD_MAX_RANGES)
     728              :     return;
     729              : 
     730    879499951 :   if (needed > m_max_ranges)
     731              :     {
     732     64072500 :       m_max_ranges = HARD_MAX_RANGES;
     733  32741047500 :       wide_int *newmem = new wide_int[m_max_ranges * 2];
     734     64072500 :       unsigned n = num_pairs () * 2;
     735    364786836 :       for (unsigned i = 0; i < n; ++i)
     736    300714336 :         newmem[i] = m_base[i];
     737     64072500 :       m_base = newmem;
     738              :     }
     739              : }
     740              : 
     741              : template<unsigned N, bool RESIZABLE>
     742              : inline
     743   5175686360 : int_range<N, RESIZABLE>::~int_range ()
     744              : {
     745   3869831051 :   if (RESIZABLE && m_base != m_ranges)
     746  32741047500 :     delete[] m_base;
     747  32186985258 : }
     748              : 
     749              : // This is an "infinite" precision irange for use in temporary
     750              : // calculations.  It starts with a sensible default covering 99% of
     751              : // uses, and goes up to HARD_MAX_RANGES when needed.  Any allocated
     752              : // storage is freed upon destruction.
     753              : typedef int_range<3, /*RESIZABLE=*/true> int_range_max;
     754              : 
     755        40538 : class vrange_visitor
     756              : {
     757              : public:
     758            0 :   virtual void visit (const irange &) const { }
     759            0 :   virtual void visit (const prange &) const { }
     760            0 :   virtual void visit (const frange &) const { }
     761            0 :   virtual void visit (const unsupported_range &) const { }
     762              : };
     763              : 
     764              : // This is an "infinite" precision range object for use in temporary
     765              : // calculations for any of the handled types.  The object can be
     766              : // transparently used as a vrange.
     767              : //
     768              : // Using any of the various constructors initializes the object
     769              : // appropriately, but the default constructor is uninitialized and
     770              : // must be initialized either with set_type() or by assigning into it.
     771              : //
     772              : // Assigning between incompatible types is allowed.  For example if a
     773              : // temporary holds an irange, you can assign an frange into it, and
     774              : // all the right things will happen.  However, before passing this
     775              : // object to a function accepting a vrange, the correct type must be
     776              : // set.  If it isn't, you can do so with set_type().
     777              : 
     778              : class value_range
     779              : {
     780              : public:
     781              :   value_range ();
     782              :   value_range (const vrange &r);
     783              :   value_range (tree type);
     784              :   value_range (tree, tree, value_range_kind kind = VR_RANGE);
     785              :   value_range (const value_range &);
     786              :   ~value_range ();
     787              :   void set_type (tree type);
     788              :   vrange& operator= (const vrange &);
     789              :   value_range& operator= (const value_range &);
     790              :   bool operator== (const value_range &r) const;
     791              :   bool operator!= (const value_range &r) const;
     792              :   operator vrange &();
     793              :   operator const vrange &() const;
     794              :   void dump (FILE *) const;
     795              :   static bool supports_type_p (const_tree type);
     796              : 
     797      2947062 :   tree type () { return m_vrange->type (); }
     798    154500864 :   bool varying_p () const { return m_vrange->varying_p (); }
     799    249384447 :   bool undefined_p () const { return m_vrange->undefined_p (); }
     800    314838095 :   void set_varying (tree type) { init (type); m_vrange->set_varying (type); }
     801     23209440 :   void set_undefined () { m_vrange->set_undefined (); }
     802     19052527 :   bool union_ (const vrange &r) { return m_vrange->union_ (r); }
     803     98948779 :   bool intersect (const vrange &r) { return m_vrange->intersect (r); }
     804      1386318 :   bool contains_p (tree cst) const { return m_vrange->contains_p (cst); }
     805    312611169 :   bool singleton_p (tree *result = NULL) const
     806    312611169 :     { return m_vrange->singleton_p (result); }
     807              :   void set_zero (tree type) { init (type); return m_vrange->set_zero (type); }
     808            0 :   void set_nonzero (tree type)
     809            0 :     { init (type); return m_vrange->set_nonzero (type); }
     810       260851 :   bool nonzero_p () const { return m_vrange->nonzero_p (); }
     811         2119 :   bool zero_p () const { return m_vrange->zero_p (); }
     812     10766382 :   tree lbound () const { return m_vrange->lbound (); }
     813       346194 :   tree ubound () const { return m_vrange->ubound (); }
     814       508970 :   irange_bitmask get_bitmask () const { return m_vrange->get_bitmask (); }
     815      1363342 :   void update_bitmask (const class irange_bitmask &bm)
     816      1363342 :   { return m_vrange->update_bitmask (bm); }
     817         3095 :   void accept (const vrange_visitor &v) const { m_vrange->accept (v); }
     818              :   void verify_range () const { m_vrange->verify_range (); }
     819              : private:
     820              :   void init (tree type);
     821              :   void init (const vrange &);
     822              : 
     823              :   vrange *m_vrange;
     824              :   union buffer_type {
     825              :     int_range_max ints;
     826              :     frange floats;
     827              :     unsupported_range unsupported;
     828              :     prange pointers;
     829   6739211590 :     buffer_type () { }
     830   6864627371 :     ~buffer_type () { }
     831              :   } m_buffer;
     832              : };
     833              : 
     834              : // The default constructor is uninitialized and must be initialized
     835              : // with either set_type() or with an assignment into it.
     836              : 
     837              : inline
     838   3773146134 : value_range::value_range ()
     839   3773146134 :   : m_buffer ()
     840              : {
     841   3773146134 :   m_vrange = NULL;
     842              : }
     843              : 
     844              : // Copy constructor.
     845              : 
     846              : inline
     847     11931359 : value_range::value_range (const value_range &r)
     848              : {
     849     11931359 :   init (*r.m_vrange);
     850              : }
     851              : 
     852              : // Copy constructor from a vrange.
     853              : 
     854              : inline
     855     83390578 : value_range::value_range (const vrange &r)
     856              : {
     857     83390578 :   init (r);
     858              : }
     859              : 
     860              : // Construct an UNDEFINED range that can hold ranges of TYPE.  If TYPE
     861              : // is not supported, default to unsupported_range.
     862              : 
     863              : inline
     864   2870695548 : value_range::value_range (tree type)
     865              : {
     866   2696195614 :   init (type);
     867      5968140 : }
     868              : 
     869              : // Construct a range that can hold a range of [MIN, MAX], where MIN
     870              : // and MAX are trees.
     871              : 
     872              : inline
     873        47971 : value_range::value_range (tree min, tree max, value_range_kind kind)
     874              : {
     875        47971 :   init (TREE_TYPE (min));
     876        47971 :   m_vrange->set (min, max, kind);
     877        47971 : }
     878              : 
     879              : inline
     880   6864627371 : value_range::~value_range ()
     881              : {
     882   6864627371 :   if (m_vrange)
     883   3229025942 :     m_vrange->~vrange ();
     884   6864627371 : }
     885              : 
     886              : // Initialize object to an UNDEFINED range that can hold ranges of
     887              : // TYPE.  Clean-up memory if there was a previous object.
     888              : 
     889              : inline void
     890     93661956 : value_range::set_type (tree type)
     891              : {
     892     93661956 :   if (m_vrange)
     893      8708540 :     m_vrange->~vrange ();
     894     93661956 :   init (type);
     895     93661956 : }
     896              : 
     897              : // Initialize object to an UNDEFINED range that can hold ranges of
     898              : // TYPE.
     899              : 
     900              : inline void
     901   3279243570 : value_range::init (tree type)
     902              : {
     903   3279243570 :   gcc_checking_assert (TYPE_P (type));
     904              : 
     905   3279243570 :   if (irange::supports_p (type))
     906   2339982966 :     m_vrange = new (&m_buffer.ints) int_range_max ();
     907    939260604 :   else if (prange::supports_p (type))
     908    755812951 :     m_vrange = new (&m_buffer.pointers) prange ();
     909    183447653 :   else if (frange::supports_p (type))
     910    112718859 :     m_vrange = new (&m_buffer.floats) frange ();
     911              :   else
     912     70728794 :     m_vrange = new (&m_buffer.unsupported) unsupported_range ();
     913   3279243570 : }
     914              : 
     915              : // Initialize object with a copy of R.
     916              : 
     917              : inline void
     918    128623547 : value_range::init (const vrange &r)
     919              : {
     920    128623547 :   if (is_a <irange> (r))
     921     76952359 :     m_vrange = new (&m_buffer.ints) int_range_max (as_a <irange> (r));
     922     51671188 :   else if (is_a <prange> (r))
     923    101242126 :     m_vrange = new (&m_buffer.pointers) prange (as_a <prange> (r));
     924      1050125 :   else if (is_a <frange> (r))
     925       369888 :     m_vrange = new (&m_buffer.floats) frange (as_a <frange> (r));
     926              :   else
     927      1730362 :     m_vrange = new (&m_buffer.unsupported)
     928       865181 :       unsupported_range (as_a <unsupported_range> (r));
     929    128623547 : }
     930              : 
     931              : // Assignment operator.  Copying incompatible types is allowed.  That
     932              : // is, assigning an frange to an object holding an irange does the
     933              : // right thing.
     934              : 
     935              : inline vrange &
     936     33301610 : value_range::operator= (const vrange &r)
     937              : {
     938     33301610 :   if (m_vrange)
     939      9258514 :     m_vrange->~vrange ();
     940     33301610 :   init (r);
     941     33301610 :   return *m_vrange;
     942              : }
     943              : 
     944              : inline value_range &
     945      9306457 : value_range::operator= (const value_range &r)
     946              : {
     947              :   // No need to call the m_vrange destructor here, as we will do so in
     948              :   // the assignment below.
     949      1092316 :   *this = *r.m_vrange;
     950      9306457 :   return *this;
     951              : }
     952              : 
     953              : inline bool
     954     26730971 : value_range::operator== (const value_range &r) const
     955              : {
     956     26730971 :   return *m_vrange == *r.m_vrange;
     957              : }
     958              : 
     959              : inline bool
     960     13743711 : value_range::operator!= (const value_range &r) const
     961              : {
     962     13743711 :   return *m_vrange != *r.m_vrange;
     963              : }
     964              : 
     965              : inline
     966   4601405909 : value_range::operator vrange &()
     967              : {
     968   4300688133 :   return *m_vrange;
     969              : }
     970              : 
     971              : inline
     972     44000202 : value_range::operator const vrange &() const
     973              : {
     974     44000202 :   return *m_vrange;
     975              : }
     976              : 
     977              : // Return TRUE if TYPE is supported by the vrange infrastructure.
     978              : 
     979              : inline bool
     980   6303597399 : value_range::supports_type_p (const_tree type)
     981              : {
     982   6303597399 :   return irange::supports_p (type)
     983   1575748922 :     || prange::supports_p (type)
     984    261727238 :     || frange::supports_p (type);
     985              : }
     986              : 
     987              : extern value_range_kind get_legacy_range (const vrange &, tree &min, tree &max);
     988              : extern void dump_value_range (FILE *, const vrange *);
     989              : extern bool vrp_operand_equal_p (const_tree, const_tree);
     990              : inline REAL_VALUE_TYPE frange_val_min (const_tree type);
     991              : inline REAL_VALUE_TYPE frange_val_max (const_tree type);
     992              : 
     993              : // Number of sub-ranges in a range.
     994              : 
     995              : inline unsigned
     996  33908579454 : irange::num_pairs () const
     997              : {
     998  10275482594 :   return m_num_ranges;
     999              : }
    1000              : 
    1001              : inline tree
    1002  11836855165 : irange::type () const
    1003              : {
    1004  11836855165 :   gcc_checking_assert (m_num_ranges > 0);
    1005  11836855165 :   return m_type;
    1006              : }
    1007              : 
    1008              : inline bool
    1009   5097677803 : irange::varying_compatible_p () const
    1010              : {
    1011   5097677803 :   if (m_num_ranges != 1)
    1012              :     return false;
    1013              : 
    1014   3807228613 :   const wide_int &l = m_base[0];
    1015   3807228613 :   const wide_int &u = m_base[1];
    1016   3807228613 :   tree t = m_type;
    1017              : 
    1018   3807228613 :   if (m_kind == VR_VARYING)
    1019              :     return true;
    1020              : 
    1021   3512357727 :   unsigned prec = TYPE_PRECISION (t);
    1022   3512357727 :   signop sign = TYPE_SIGN (t);
    1023   3512357727 :   if (INTEGRAL_TYPE_P (t) || POINTER_TYPE_P (t))
    1024   7024715454 :     return (l == wi::min_value (prec, sign)
    1025   4581862755 :             && u == wi::max_value (prec, sign)
    1026   3519245318 :             && m_bitmask.unknown_p ());
    1027              :   return true;
    1028              : }
    1029              : 
    1030              : inline bool
    1031   1014580882 : vrange::varying_p () const
    1032              : {
    1033   1011189250 :   return m_kind == VR_VARYING;
    1034              : }
    1035              : 
    1036              : inline bool
    1037  19431968390 : vrange::undefined_p () const
    1038              : {
    1039  11597091967 :   return m_kind == VR_UNDEFINED;
    1040              : }
    1041              : 
    1042              : inline bool
    1043    222211903 : irange::zero_p () const
    1044              : {
    1045    210031477 :   return (m_kind == VR_RANGE && m_num_ranges == 1
    1046    408470722 :           && lower_bound (0) == 0
    1047    432243399 :           && upper_bound (0) == 0);
    1048              : }
    1049              : 
    1050              : inline bool
    1051        42629 : irange::nonzero_p () const
    1052              : {
    1053        42629 :   if (undefined_p ())
    1054              :     return false;
    1055              : 
    1056        42629 :   wide_int zero = wi::zero (TYPE_PRECISION (type ()));
    1057        42629 :   return *this == int_range<2> (type (), zero, zero, VR_ANTI_RANGE);
    1058        42629 : }
    1059              : 
    1060              : inline bool
    1061  15408475373 : irange::supports_p (const_tree type)
    1062              : {
    1063  14806530528 :   return INTEGRAL_TYPE_P (type);
    1064              : }
    1065              : 
    1066              : inline bool
    1067     73161305 : irange::contains_p (tree cst) const
    1068              : {
    1069     73161305 :   return contains_p (wi::to_wide (cst));
    1070              : }
    1071              : 
    1072              : inline bool
    1073     37809525 : range_includes_zero_p (const vrange &vr)
    1074              : {
    1075     37809525 :   if (vr.undefined_p ())
    1076              :     return false;
    1077              : 
    1078     37809525 :   if (vr.varying_p ())
    1079              :     return true;
    1080              : 
    1081     28679945 :   return vr.contains_p (build_zero_cst (vr.type ()));
    1082              : }
    1083              : 
    1084              : // Constructors for irange
    1085              : 
    1086              : inline
    1087   5290461385 : irange::irange (wide_int *base, unsigned nranges, bool resizable)
    1088              :   : vrange (VR_IRANGE),
    1089   5290461385 :     m_resizable (resizable),
    1090   5290461385 :     m_max_ranges (nranges)
    1091              : {
    1092   5290461385 :   m_base = base;
    1093   5290461385 :   set_undefined ();
    1094              : }
    1095              : 
    1096              : // Constructors for int_range<>.
    1097              : 
    1098              : template<unsigned N, bool RESIZABLE>
    1099              : inline
    1100   3975277470 : int_range<N, RESIZABLE>::int_range ()
    1101  27137724898 :   : irange (m_ranges, N, RESIZABLE)
    1102              : {
    1103   3975277470 : }
    1104              : 
    1105              : template<unsigned N, bool RESIZABLE>
    1106       411475 : int_range<N, RESIZABLE>::int_range (const int_range &other)
    1107      2880317 :   : irange (m_ranges, N, RESIZABLE)
    1108              : {
    1109       411475 :   irange::operator= (other);
    1110       411475 : }
    1111              : 
    1112              : template<unsigned N, bool RESIZABLE>
    1113              : int_range<N, RESIZABLE>::int_range (tree min, tree max, value_range_kind kind)
    1114              :   : irange (m_ranges, N, RESIZABLE)
    1115              : {
    1116              :   irange::set (min, max, kind);
    1117              : }
    1118              : 
    1119              : template<unsigned N, bool RESIZABLE>
    1120    155112137 : int_range<N, RESIZABLE>::int_range (tree type)
    1121    606940473 :   : irange (m_ranges, N, RESIZABLE)
    1122              : {
    1123    155112137 :   set_varying (type);
    1124    155112137 : }
    1125              : 
    1126              : template<unsigned N, bool RESIZABLE>
    1127    772422235 : int_range<N, RESIZABLE>::int_range (tree type, const wide_int &wmin, const wide_int &wmax,
    1128              :                          value_range_kind kind)
    1129   2687184931 :   : irange (m_ranges, N, RESIZABLE)
    1130              : {
    1131    772422235 :   set (type, wmin, wmax, kind);
    1132    772422235 : }
    1133              : 
    1134              : template<unsigned N, bool RESIZABLE>
    1135    387238068 : int_range<N, RESIZABLE>::int_range (const irange &other)
    1136   2491607310 :   : irange (m_ranges, N, RESIZABLE)
    1137              : {
    1138    387238068 :   irange::operator= (other);
    1139    387238068 : }
    1140              : 
    1141              : template<unsigned N, bool RESIZABLE>
    1142              : int_range<N, RESIZABLE>&
    1143     63560066 : int_range<N, RESIZABLE>::operator= (const int_range &src)
    1144              : {
    1145     63552432 :   irange::operator= (src);
    1146          303 :   return *this;
    1147              : }
    1148              : 
    1149              : inline void
    1150   5658330794 : irange::set_undefined ()
    1151              : {
    1152   5658330794 :   m_kind = VR_UNDEFINED;
    1153   5295360708 :   m_num_ranges = 0;
    1154    367869405 : }
    1155              : 
    1156              : inline void
    1157   1205903804 : irange::set_varying (tree type)
    1158              : {
    1159   1205903804 :   m_kind = VR_VARYING;
    1160   1205903804 :   m_num_ranges = 1;
    1161   1205903804 :   m_bitmask.set_unknown (TYPE_PRECISION (type));
    1162              : 
    1163   1205903804 :   if (INTEGRAL_TYPE_P (type) || POINTER_TYPE_P (type))
    1164              :     {
    1165   1205903804 :       m_type = type;
    1166              :       // Strict enum's require varying to be not TYPE_MIN/MAX, but rather
    1167              :       // min_value and max_value.
    1168   1205903804 :       m_base[0] = wi::min_value (TYPE_PRECISION (type), TYPE_SIGN (type));
    1169   1205915578 :       m_base[1] = wi::max_value (TYPE_PRECISION (type), TYPE_SIGN (type));
    1170              :     }
    1171              :   else
    1172            0 :     m_type = error_mark_node;
    1173   1205903804 : }
    1174              : 
    1175              : // Return the lower bound of a sub-range.  PAIR is the sub-range in
    1176              : // question.
    1177              : 
    1178              : inline wide_int
    1179  11693350272 : irange::lower_bound (unsigned pair) const
    1180              : {
    1181  11693350272 :   gcc_checking_assert (m_num_ranges > 0);
    1182  11693350272 :   gcc_checking_assert (pair + 1 <= num_pairs ());
    1183  11693350272 :   return m_base[pair * 2];
    1184              : }
    1185              : 
    1186              : // Return the upper bound of a sub-range.  PAIR is the sub-range in
    1187              : // question.
    1188              : 
    1189              : inline wide_int
    1190  13324476008 : irange::upper_bound (unsigned pair) const
    1191              : {
    1192  13324476008 :   gcc_checking_assert (m_num_ranges > 0);
    1193  13324476008 :   gcc_checking_assert (pair + 1 <= num_pairs ());
    1194  13324476008 :   return m_base[pair * 2 + 1];
    1195              : }
    1196              : 
    1197              : // Return the highest bound of a range.
    1198              : 
    1199              : inline wide_int
    1200   3616214610 : irange::upper_bound () const
    1201              : {
    1202   3616214610 :   unsigned pairs = num_pairs ();
    1203   3616214610 :   gcc_checking_assert (pairs > 0);
    1204   3616214610 :   return upper_bound (pairs - 1);
    1205              : }
    1206              : 
    1207              : // Set value range VR to a nonzero range of type TYPE.
    1208              : 
    1209              : inline void
    1210      3533164 : irange::set_nonzero (tree type)
    1211              : {
    1212      3533164 :   unsigned prec = TYPE_PRECISION (type);
    1213              : 
    1214      3533164 :   if (TYPE_UNSIGNED (type))
    1215              :     {
    1216      3138157 :       m_type = type;
    1217      3138157 :       m_kind = VR_RANGE;
    1218      3138157 :       m_base[0] = wi::one (prec);
    1219      3138157 :       m_base[1] = wi::minus_one (prec);
    1220      3138157 :       m_bitmask.set_unknown (prec);
    1221      3138157 :       m_num_ranges = 1;
    1222              : 
    1223      3138157 :       if (flag_checking)
    1224      3138157 :         verify_range ();
    1225              :     }
    1226              :   else
    1227              :     {
    1228       395007 :       wide_int zero = wi::zero (prec);
    1229       395007 :       set (type, zero, zero, VR_ANTI_RANGE);
    1230       395007 :     }
    1231      3533164 : }
    1232              : 
    1233              : // Set value range VR to a ZERO range of type TYPE.
    1234              : 
    1235              : inline void
    1236      3420414 : irange::set_zero (tree type)
    1237              : {
    1238      3420414 :   wide_int zero = wi::zero (TYPE_PRECISION (type));
    1239      3420414 :   set (type, zero, zero);
    1240      3420414 : }
    1241              : 
    1242              : // Normalize a range to VARYING or UNDEFINED if possible.
    1243              : 
    1244              : inline void
    1245    565251883 : irange::normalize_kind ()
    1246              : {
    1247    565251883 :   if (m_num_ranges == 0)
    1248        18897 :     set_undefined ();
    1249    565232986 :   else if (varying_compatible_p ())
    1250              :     {
    1251     27246941 :       if (m_kind == VR_RANGE)
    1252      6740377 :         m_kind = VR_VARYING;
    1253     20506564 :       else if (m_kind == VR_ANTI_RANGE)
    1254            0 :         set_undefined ();
    1255              :     }
    1256    565251883 :   if (flag_checking)
    1257    565250975 :     verify_range ();
    1258    565251883 : }
    1259              : 
    1260              : inline bool
    1261     28185092 : contains_zero_p (const irange &r)
    1262              : {
    1263     28185092 :   if (r.undefined_p ())
    1264              :     return false;
    1265              : 
    1266     28185092 :   wide_int zero = wi::zero (TYPE_PRECISION (r.type ()));
    1267     28185092 :   return r.contains_p (zero);
    1268     28185092 : }
    1269              : 
    1270              : inline wide_int
    1271     90253828 : irange_val_min (const_tree type)
    1272              : {
    1273     90253828 :   gcc_checking_assert (irange::supports_p (type));
    1274     90253828 :   return wi::min_value (TYPE_PRECISION (type), TYPE_SIGN (type));
    1275              : }
    1276              : 
    1277              : inline wide_int
    1278     87587350 : irange_val_max (const_tree type)
    1279              : {
    1280     87587350 :   gcc_checking_assert (irange::supports_p (type));
    1281     87587350 :   return wi::max_value (TYPE_PRECISION (type), TYPE_SIGN (type));
    1282              : }
    1283              : 
    1284              : inline
    1285    916724157 : prange::prange ()
    1286    916724157 :   : vrange (VR_PRANGE)
    1287              : {
    1288    916724157 :   set_undefined ();
    1289              : }
    1290              : 
    1291              : inline
    1292    122809141 : prange::prange (const prange &r)
    1293    122809141 :   : vrange (VR_PRANGE)
    1294              : {
    1295    122809141 :   *this = r;
    1296              : }
    1297              : 
    1298              : inline
    1299      9778184 : prange::prange (tree type)
    1300      9778184 :   : vrange (VR_PRANGE)
    1301              : {
    1302      9778184 :   set_varying (type);
    1303              : }
    1304              : 
    1305              : inline
    1306      3200294 : prange::prange (tree type, const wide_int &lb, const wide_int &ub,
    1307      3200294 :                 value_range_kind kind)
    1308      3200294 :   : vrange (VR_PRANGE)
    1309              : {
    1310      3200294 :   set (type, lb, ub, kind);
    1311              : }
    1312              : 
    1313              : inline bool
    1314   3579368677 : prange::supports_p (const_tree type)
    1315              : {
    1316   3579368677 :   return POINTER_TYPE_P (type);
    1317              : }
    1318              : 
    1319              : inline bool
    1320    416623031 : prange::supports_type_p (const_tree type) const
    1321              : {
    1322    416623031 :   return POINTER_TYPE_P (type);
    1323              : }
    1324              : 
    1325              : inline void
    1326   1046021787 : prange::set_undefined ()
    1327              : {
    1328   1045018358 :   m_kind = VR_UNDEFINED;
    1329    128896845 : }
    1330              : 
    1331              : inline void
    1332    435757888 : prange::set_varying (tree type)
    1333              : {
    1334    435757888 :   m_kind = VR_VARYING;
    1335    435757888 :   m_type = type;
    1336    435757888 :   m_min = wi::zero (TYPE_PRECISION (type));
    1337    435757888 :   m_max = wi::max_value (TYPE_PRECISION (type), UNSIGNED);
    1338    435757888 :   m_bitmask.set_unknown (TYPE_PRECISION (type));
    1339              : 
    1340    435757888 :   if (flag_checking)
    1341    435757864 :     verify_range ();
    1342    435757888 : }
    1343              : 
    1344              : inline void
    1345     66064982 : prange::set_nonzero (tree type)
    1346              : {
    1347     66064982 :   m_kind = VR_RANGE;
    1348     66064982 :   m_type = type;
    1349     66064982 :   m_min = wi::one (TYPE_PRECISION (type));
    1350     66064982 :   m_max = wi::max_value (TYPE_PRECISION (type), UNSIGNED);
    1351     66064982 :   m_bitmask.set_unknown (TYPE_PRECISION (type));
    1352              : 
    1353     66064982 :   if (flag_checking)
    1354     66064859 :     verify_range ();
    1355     66064982 : }
    1356              : 
    1357              : inline void
    1358         1192 : prange::set_zero (tree type)
    1359              : {
    1360         1192 :   m_kind = VR_RANGE;
    1361         1192 :   m_type = type;
    1362         1192 :   wide_int zero = wi::zero (TYPE_PRECISION (type));
    1363         1192 :   m_min = m_max = zero;
    1364         1192 :   m_bitmask = irange_bitmask (zero, zero);
    1365              : 
    1366         1192 :   if (flag_checking)
    1367         1192 :     verify_range ();
    1368         1192 : }
    1369              : 
    1370              : inline bool
    1371       613158 : prange::contains_p (tree cst) const
    1372              : {
    1373       613158 :   return contains_p (wi::to_wide (cst));
    1374              : }
    1375              : 
    1376              : inline bool
    1377      3367256 : prange::zero_p () const
    1378              : {
    1379      3367256 :   return m_kind == VR_RANGE && m_min == 0 && m_max == 0;
    1380              : }
    1381              : 
    1382              : inline bool
    1383     52409401 : prange::nonzero_p () const
    1384              : {
    1385     52409401 :   return m_kind == VR_RANGE && m_min == 1 && m_max == -1;
    1386              : }
    1387              : 
    1388              : inline tree
    1389   1888280261 : prange::type () const
    1390              : {
    1391   1888280261 :   gcc_checking_assert (!undefined_p ());
    1392   1888280261 :   return m_type;
    1393              : }
    1394              : 
    1395              : inline wide_int
    1396    343565266 : prange::lower_bound () const
    1397              : {
    1398    343565266 :   gcc_checking_assert (!undefined_p ());
    1399    343565266 :   return m_min;
    1400              : }
    1401              : 
    1402              : inline wide_int
    1403    334242455 : prange::upper_bound () const
    1404              : {
    1405    334242455 :   gcc_checking_assert (!undefined_p ());
    1406    334242455 :   return m_max;
    1407              : }
    1408              : 
    1409              : inline bool
    1410   1071250211 : prange::varying_compatible_p () const
    1411              : {
    1412   1071250211 :   return (!undefined_p ()
    1413   1556719374 :           && m_min == 0 && m_max == -1 && get_bitmask ().unknown_p ());
    1414              : }
    1415              : 
    1416              : inline irange_bitmask
    1417    536210560 : prange::get_bitmask () const
    1418              : {
    1419    536210560 :   return m_bitmask;
    1420              : }
    1421              : 
    1422              : inline bool
    1423            0 : prange::fits_p (const vrange &) const
    1424              : {
    1425            0 :   return true;
    1426              : }
    1427              : 
    1428              : 
    1429              : inline
    1430    115405569 : frange::frange ()
    1431    115405569 :   : vrange (VR_FRANGE)
    1432              : {
    1433    115405533 :   set_undefined ();
    1434              : }
    1435              : 
    1436              : inline
    1437      2984001 : frange::frange (const frange &src)
    1438      2984001 :   : vrange (VR_FRANGE)
    1439              : {
    1440      2565686 :   *this = src;
    1441              : }
    1442              : 
    1443              : inline
    1444       769925 : frange::frange (tree type)
    1445       769925 :   : vrange (VR_FRANGE)
    1446              : {
    1447       769925 :   set_varying (type);
    1448              : }
    1449              : 
    1450              : // frange constructor from REAL_VALUE_TYPE endpoints.
    1451              : 
    1452              : inline
    1453     48493501 : frange::frange (tree type,
    1454              :                 const REAL_VALUE_TYPE &min, const REAL_VALUE_TYPE &max,
    1455     48492993 :                 value_range_kind kind)
    1456     48493501 :   : vrange (VR_FRANGE)
    1457              : {
    1458     48493501 :   set (type, min, max, kind);
    1459              : }
    1460              : 
    1461              : // frange constructor from trees.
    1462              : 
    1463              : inline
    1464              : frange::frange (tree min, tree max, value_range_kind kind)
    1465              :   : vrange (VR_FRANGE)
    1466              : {
    1467              :   set (min, max, kind);
    1468              : }
    1469              : 
    1470              : inline tree
    1471     75279652 : frange::type () const
    1472              : {
    1473     75279652 :   gcc_checking_assert (!undefined_p ());
    1474     75279652 :   return m_type;
    1475              : }
    1476              : 
    1477              : inline void
    1478     69861056 : frange::set_varying (tree type)
    1479              : {
    1480     69861056 :   m_kind = VR_VARYING;
    1481     69861056 :   m_type = type;
    1482     69861056 :   m_min = frange_val_min (type);
    1483     69861056 :   m_max = frange_val_max (type);
    1484     69861056 :   if (HONOR_NANS (m_type))
    1485              :     {
    1486     65888751 :       m_pos_nan = true;
    1487     65888751 :       m_neg_nan = true;
    1488              :     }
    1489              :   else
    1490              :     {
    1491      3972305 :       m_pos_nan = false;
    1492      3972305 :       m_neg_nan = false;
    1493              :     }
    1494     69861056 : }
    1495              : 
    1496              : inline void
    1497    133205558 : frange::set_undefined ()
    1498              : {
    1499    133205558 :   m_kind = VR_UNDEFINED;
    1500    133205558 :   m_type = NULL;
    1501    133205558 :   m_pos_nan = false;
    1502    133205558 :   m_neg_nan = false;
    1503              :   // m_min and m_min are uninitialized as they are REAL_VALUE_TYPE ??.
    1504    133205558 :   if (flag_checking)
    1505    133205558 :     verify_range ();
    1506    133205558 : }
    1507              : 
    1508              : // Set the NAN bits to NAN and adjust the range.
    1509              : 
    1510              : inline void
    1511      6355361 : frange::update_nan (const nan_state &nan)
    1512              : {
    1513      6355361 :   gcc_checking_assert (!undefined_p ());
    1514      6355361 :   if (HONOR_NANS (m_type))
    1515              :     {
    1516      6354848 :       m_pos_nan = nan.pos_p ();
    1517      6354848 :       m_neg_nan = nan.neg_p ();
    1518      6354848 :       normalize_kind ();
    1519      6354848 :       if (flag_checking)
    1520      6354848 :         verify_range ();
    1521              :     }
    1522      6355361 : }
    1523              : 
    1524              : // Set the NAN bit to +-NAN.
    1525              : 
    1526              : inline void
    1527      4341179 : frange::update_nan ()
    1528              : {
    1529      4341179 :   gcc_checking_assert (!undefined_p ());
    1530      4341179 :   nan_state nan (true);
    1531      4341179 :   update_nan (nan);
    1532      4341179 : }
    1533              : 
    1534              : // Like above, but set the sign of the NAN.
    1535              : 
    1536              : inline void
    1537      2014182 : frange::update_nan (bool sign)
    1538              : {
    1539      2014182 :   gcc_checking_assert (!undefined_p ());
    1540      2014182 :   nan_state nan (/*pos=*/!sign, /*neg=*/sign);
    1541      2014182 :   update_nan (nan);
    1542      2014182 : }
    1543              : 
    1544              : inline bool
    1545            0 : frange::contains_p (tree cst) const
    1546              : {
    1547            0 :   return contains_p (*TREE_REAL_CST_PTR (cst));
    1548              : }
    1549              : 
    1550              : // Clear the NAN bit and adjust the range.
    1551              : 
    1552              : inline void
    1553     15183275 : frange::clear_nan ()
    1554              : {
    1555     15183275 :   gcc_checking_assert (!undefined_p ());
    1556     15183275 :   m_pos_nan = false;
    1557     15183275 :   m_neg_nan = false;
    1558     15183275 :   normalize_kind ();
    1559     15183275 :   if (flag_checking)
    1560     15183275 :     verify_range ();
    1561     15183275 : }
    1562              : 
    1563              : // Set R to maximum representable value for TYPE.
    1564              : 
    1565              : inline REAL_VALUE_TYPE
    1566     23704201 : real_max_representable (const_tree type)
    1567              : {
    1568     23704201 :   REAL_VALUE_TYPE r;
    1569     23704201 :   char buf[128];
    1570     23704201 :   get_max_float (REAL_MODE_FORMAT (TYPE_MODE (type)),
    1571              :                  buf, sizeof (buf), false);
    1572     23704201 :   int res = real_from_string (&r, buf);
    1573     23704201 :   gcc_checking_assert (!res);
    1574     23704201 :   return r;
    1575              : }
    1576              : 
    1577              : // Return the minimum representable value for TYPE.
    1578              : 
    1579              : inline REAL_VALUE_TYPE
    1580     12251268 : real_min_representable (const_tree type)
    1581              : {
    1582     12251268 :   REAL_VALUE_TYPE r = real_max_representable (type);
    1583     12251268 :   r = real_value_negate (&r);
    1584     12251268 :   return r;
    1585              : }
    1586              : 
    1587              : // Return the minimum value for TYPE.
    1588              : 
    1589              : inline REAL_VALUE_TYPE
    1590    183585699 : frange_val_min (const_tree type)
    1591              : {
    1592    183585699 :   if (HONOR_INFINITIES (type))
    1593    172857416 :     return dconstninf;
    1594              :   else
    1595     10728283 :     return real_min_representable (type);
    1596              : }
    1597              : 
    1598              : // Return the maximum value for TYPE.
    1599              : 
    1600              : inline REAL_VALUE_TYPE
    1601    128655645 : frange_val_max (const_tree type)
    1602              : {
    1603    128655645 :   if (HONOR_INFINITIES (type))
    1604    118808334 :     return dconstinf;
    1605              :   else
    1606      9847311 :     return real_max_representable (type);
    1607              : }
    1608              : 
    1609              : // Return TRUE if R is the minimum value for TYPE.
    1610              : 
    1611              : inline bool
    1612    110256307 : frange_val_is_min (const REAL_VALUE_TYPE &r, const_tree type)
    1613              : {
    1614    110256307 :   REAL_VALUE_TYPE min = frange_val_min (type);
    1615    110256307 :   return real_identical (&min, &r);
    1616              : }
    1617              : 
    1618              : // Return TRUE if R is the max value for TYPE.
    1619              : 
    1620              : inline bool
    1621     54939443 : frange_val_is_max (const REAL_VALUE_TYPE &r, const_tree type)
    1622              : {
    1623     54939443 :   REAL_VALUE_TYPE max = frange_val_max (type);
    1624     54939443 :   return real_identical (&max, &r);
    1625              : }
    1626              : 
    1627              : // Build a NAN with a state of NAN.
    1628              : 
    1629              : inline void
    1630       325216 : frange::set_nan (tree type, const nan_state &nan)
    1631              : {
    1632       325216 :   gcc_checking_assert (nan.pos_p () || nan.neg_p ());
    1633       325216 :   if (HONOR_NANS (type))
    1634              :     {
    1635       325215 :       m_kind = VR_NAN;
    1636       325215 :       m_type = type;
    1637       325215 :       m_neg_nan = nan.neg_p ();
    1638       325215 :       m_pos_nan = nan.pos_p ();
    1639       325215 :       if (flag_checking)
    1640       325215 :         verify_range ();
    1641              :     }
    1642              :   else
    1643            1 :     set_undefined ();
    1644       325216 : }
    1645              : 
    1646              : // Build a signless NAN of type TYPE.
    1647              : 
    1648              : inline void
    1649       146413 : frange::set_nan (tree type)
    1650              : {
    1651       146413 :   nan_state nan (true);
    1652       146401 :   set_nan (type, nan);
    1653       124367 : }
    1654              : 
    1655              : // Build a NAN of type TYPE with SIGN.
    1656              : 
    1657              : inline void
    1658       178800 : frange::set_nan (tree type, bool sign)
    1659              : {
    1660       178800 :   nan_state nan (/*pos=*/!sign, /*neg=*/sign);
    1661       178796 :   set_nan (type, nan);
    1662        21487 : }
    1663              : 
    1664              : // Return TRUE if range is known to be finite.
    1665              : 
    1666              : inline bool
    1667            0 : frange::known_isfinite () const
    1668              : {
    1669            0 :   if (undefined_p () || varying_p () || m_kind == VR_ANTI_RANGE)
    1670              :     return false;
    1671            0 :   return (!maybe_isnan () && !real_isinf (&m_min) && !real_isinf (&m_max));
    1672              : }
    1673              : 
    1674              : // Return TRUE if range is known to be normal.
    1675              : 
    1676              : inline bool
    1677            0 : frange::known_isnormal () const
    1678              : {
    1679            0 :   if (!known_isfinite ())
    1680              :     return false;
    1681              : 
    1682            0 :   machine_mode mode = TYPE_MODE (type ());
    1683            0 :   return (!real_isdenormal (&m_min, mode) && !real_isdenormal (&m_max, mode)
    1684            0 :           && !real_iszero (&m_min) && !real_iszero (&m_max)
    1685            0 :           && (!real_isneg (&m_min) || real_isneg (&m_max)));
    1686              : }
    1687              : 
    1688              : // Return TRUE if range is known to be denormal.
    1689              : 
    1690              : inline bool
    1691            0 : frange::known_isdenormal_or_zero () const
    1692              : {
    1693            0 :   if (!known_isfinite ())
    1694              :     return false;
    1695              : 
    1696            0 :   machine_mode mode = TYPE_MODE (type ());
    1697            0 :   return ((real_isdenormal (&m_min, mode) || real_iszero (&m_min))
    1698            0 :           && (real_isdenormal (&m_max, mode) || real_iszero (&m_max)));
    1699              : }
    1700              : 
    1701              : // Return TRUE if range may be infinite.
    1702              : 
    1703              : inline bool
    1704        33816 : frange::maybe_isinf () const
    1705              : {
    1706        33816 :   if (undefined_p () || m_kind == VR_ANTI_RANGE || m_kind == VR_NAN)
    1707              :     return false;
    1708        33816 :   if (varying_p ())
    1709              :     return true;
    1710        31758 :   return real_isinf (&m_min) || real_isinf (&m_max);
    1711              : }
    1712              : 
    1713              : // Return TRUE if range is known to be the [-INF,-INF] or [+INF,+INF].
    1714              : 
    1715              : inline bool
    1716      6222625 : frange::known_isinf () const
    1717              : {
    1718      6222625 :   return (m_kind == VR_RANGE
    1719      8977893 :           && !maybe_isnan ()
    1720      1377625 :           && real_identical (&m_min, &m_max)
    1721      6240392 :           && real_isinf (&m_min));
    1722              : }
    1723              : 
    1724              : // Return TRUE if range is possibly a NAN.
    1725              : 
    1726              : inline bool
    1727     23859911 : frange::maybe_isnan () const
    1728              : {
    1729     22028468 :   if (undefined_p ())
    1730              :     return false;
    1731     23856743 :   return m_pos_nan || m_neg_nan;
    1732              : }
    1733              : 
    1734              : // Return TRUE if range is possibly a NAN with SIGN.
    1735              : 
    1736              : inline bool
    1737       158981 : frange::maybe_isnan (bool sign) const
    1738              : {
    1739       158981 :   if (undefined_p ())
    1740              :     return false;
    1741       158981 :   if (sign)
    1742       158981 :     return m_neg_nan;
    1743              :   return m_pos_nan;
    1744              : }
    1745              : 
    1746              : // Return TRUE if range is a +NAN or -NAN.
    1747              : 
    1748              : inline bool
    1749     17909723 : frange::known_isnan () const
    1750              : {
    1751     13757176 :   return m_kind == VR_NAN;
    1752              : }
    1753              : 
    1754              : // If the signbit for the range is known, set it in SIGNBIT and return
    1755              : // TRUE.
    1756              : 
    1757              : inline bool
    1758      1856633 : frange::signbit_p (bool &signbit) const
    1759              : {
    1760      1856633 :   if (undefined_p ())
    1761              :     return false;
    1762              : 
    1763              :   // NAN with unknown sign.
    1764      1856615 :   if (m_pos_nan && m_neg_nan)
    1765              :     return false;
    1766              :   // No NAN.
    1767       129613 :   if (!m_pos_nan && !m_neg_nan)
    1768              :     {
    1769       108540 :       if (m_min.sign == m_max.sign)
    1770              :         {
    1771        12707 :           signbit = m_min.sign;
    1772        12707 :           return true;
    1773              :         }
    1774              :       return false;
    1775              :     }
    1776              :   // NAN with known sign.
    1777        21073 :   bool nan_sign = m_neg_nan;
    1778        21073 :   if (known_isnan ()
    1779        21073 :       || (nan_sign == m_min.sign && nan_sign == m_max.sign))
    1780              :     {
    1781        19707 :       signbit = nan_sign;
    1782        19707 :       return true;
    1783              :     }
    1784              :   return false;
    1785              : }
    1786              : 
    1787              : // If range has a NAN with a known sign, set it in SIGNBIT and return
    1788              : // TRUE.
    1789              : 
    1790              : inline bool
    1791        51322 : frange::nan_signbit_p (bool &signbit) const
    1792              : {
    1793        51322 :   if (undefined_p ())
    1794              :     return false;
    1795              : 
    1796        51322 :   if (m_pos_nan == m_neg_nan)
    1797              :     return false;
    1798              : 
    1799         2434 :   signbit = m_neg_nan;
    1800         2434 :   return true;
    1801              : }
    1802              : 
    1803              : void frange_nextafter (enum machine_mode, REAL_VALUE_TYPE &,
    1804              :                        const REAL_VALUE_TYPE &);
    1805              : void frange_arithmetic (enum tree_code, tree, REAL_VALUE_TYPE &,
    1806              :                         const REAL_VALUE_TYPE &, const REAL_VALUE_TYPE &,
    1807              :                         const REAL_VALUE_TYPE &);
    1808              : 
    1809              : // Return true if TYPE1 and TYPE2 are compatible range types.
    1810              : 
    1811              : inline bool
    1812   1639377897 : range_compatible_p (tree type1, tree type2)
    1813              : {
    1814              :   // types_compatible_p requires conversion in both directions to be useless.
    1815              :   // GIMPLE only requires a cast one way in order to be compatible.
    1816              :   // Ranges really only need the sign and precision to be the same.
    1817   1639377897 :   return (TYPE_PRECISION (type1) == TYPE_PRECISION (type2)
    1818   1639377897 :           && TYPE_SIGN (type1) == TYPE_SIGN (type2));
    1819              : }
    1820              : #endif // GCC_VALUE_RANGE_H
        

Generated by: LCOV version 2.4-beta

LCOV profile is generated on x86_64 machine using following configure options: configure --disable-bootstrap --enable-coverage=opt --enable-languages=c,c++,fortran,go,jit,lto,rust,m2 --enable-host-shared. GCC test suite is run with the built compiler.