gcc/gimple-range-trace.h

   1 /* Header file for the GIMPLE range tracing/debugging facilties.
   2    Copyright (C) 2021 Free Software Foundation, Inc.
   3    Contributed by Andrew MacLeod <amacleod@redhat.com>
   4    and Aldy Hernandez <aldyh@redhat.com>.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16  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_GIMPLE_RANGE_TRACE_H
  23 #define GCC_GIMPLE_RANGE_TRACE_H
  24
  25 // This class manages range tracing for the ranger and gori components.
  26 // Tracing will provide a unique integer index whenever a new trace
  27 // is started. This can be used to identify where a calculation has gone wrong.
  28
  29 class range_tracer
  30 {
  31 public:
  32   range_tracer (const char *name = "");
  33   unsigned header (const char *str);
  34   void trailer (unsigned counter, const char *caller, bool result, tree name,
  35                 const irange &r);
  36   void print (unsigned counter, const char *str);
  37   inline void enable_trace () { tracing = true; }
  38   inline void disable_trace () { tracing = false; }
  39   virtual void breakpoint (unsigned index);
  40 private:
  41   unsigned do_header (const char *str);
  42   void print_prefix (unsigned idx, bool blanks);
  43   static const unsigned bump = 2;
  44   unsigned indent;
  45   static const unsigned name_len = 100;
  46   char component[name_len];
  47   bool tracing;
  48 };
  49
  50
  51 // If tracing is enabled, start a new trace header, returning the trace index.
  52 // Otherwise return 0.
  53
  54 inline unsigned
  55 range_tracer::header (const char *str)
  56 {
  57   if (tracing)
  58     return do_header (str);
  59   return 0;
  60 }
  61
  62 // RAII class to change current dump_file and dump_flags, and restore
  63 // when the object goes out of scope.
  64
  65 class push_dump_file
  66 {
  67 public:
  68   push_dump_file (FILE *, dump_flags_t);
  69   ~push_dump_file ();
  70 private:
  71   FILE *old_dump_file;
  72   dump_flags_t old_dump_flags;
  73 };
  74
  75 void dump_ranger (FILE *);
  76 void dump_ranger (FILE *, const vec<basic_block> &path);
  77
  78 #endif // GCC_GIMPLE_RANGE_TRACE_H