gcc/pass_manager.h

   1 /* pass_manager.h - The pipeline of optimization passes
   2    Copyright (C) 2013-2020 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef GCC_PASS_MANAGER_H
  21 #define GCC_PASS_MANAGER_H
  22
  23 class opt_pass;
  24 struct register_pass_info;
  25
  26 /* Define a list of pass lists so that both passes.c and plugins can easily
  27    find all the pass lists.  */
  28 #define GCC_PASS_LISTS \
  29   DEF_PASS_LIST (all_lowering_passes) \
  30   DEF_PASS_LIST (all_small_ipa_passes) \
  31   DEF_PASS_LIST (all_regular_ipa_passes) \
  32   DEF_PASS_LIST (all_late_ipa_passes) \
  33   DEF_PASS_LIST (all_passes)
  34
  35 #define DEF_PASS_LIST(LIST) PASS_LIST_NO_##LIST,
  36 enum pass_list
  37 {
  38   GCC_PASS_LISTS
  39   PASS_LIST_NUM
  40 };
  41 #undef DEF_PASS_LIST
  42
  43 namespace gcc {
  44
  45 class context;
  46
  47 class pass_manager
  48 {
  49 public:
  50   pass_manager (context *ctxt);
  51   ~pass_manager ();
  52
  53   void register_pass (struct register_pass_info *pass_info);
  54   void register_one_dump_file (opt_pass *pass);
  55
  56   opt_pass *get_pass_for_id (int id) const;
  57
  58   void dump_passes () const;
  59
  60   void dump_profile_report () const;
  61
  62   void finish_optimization_passes ();
  63
  64   /* Access to specific passes, so that the majority can be private.  */
  65   void execute_early_local_passes ();
  66   unsigned int execute_pass_mode_switching ();
  67
  68   /* Various passes are manually cloned by epiphany. */
  69   opt_pass *get_pass_split_all_insns () const {
  70     return pass_split_all_insns_1;
  71   }
  72   opt_pass *get_pass_mode_switching () const {
  73     return pass_mode_switching_1;
  74   }
  75   opt_pass *get_pass_peephole2 () const { return pass_peephole2_1; }
  76   opt_pass *get_pass_profile () const { return pass_profile_1; }
  77
  78   void register_pass_name (opt_pass *pass, const char *name);
  79
  80   opt_pass *get_pass_by_name (const char *name);
  81
  82   opt_pass *get_rest_of_compilation () const
  83   {
  84     return pass_rest_of_compilation_1;
  85   }
  86   opt_pass *get_clean_slate () const { return pass_clean_state_1; }
  87
  88 public:
  89   /* The root of the compilation pass tree, once constructed.  */
  90   opt_pass *all_passes;
  91   opt_pass *all_small_ipa_passes;
  92   opt_pass *all_lowering_passes;
  93   opt_pass *all_regular_ipa_passes;
  94   opt_pass *all_late_ipa_passes;
  95
  96   /* A map from static pass id to optimization pass.  */
  97   opt_pass **passes_by_id;
  98   int passes_by_id_size;
  99
 100   opt_pass **pass_lists[PASS_LIST_NUM];
 101
 102 private:
 103   void set_pass_for_id (int id, opt_pass *pass);
 104   void register_dump_files (opt_pass *pass);
 105   void create_pass_tab () const;
 106
 107 private:
 108   context *m_ctxt;
 109   hash_map<nofree_string_hash, opt_pass *> *m_name_to_pass_map;
 110
 111   /* References to all of the individual passes.
 112      These fields are generated via macro expansion.
 113
 114      For example:
 115          NEXT_PASS (pass_build_cfg, 1);
 116      within pass-instances.def means that there is a field:
 117          opt_pass *pass_build_cfg_1;
 118
 119      Similarly, the various:
 120         NEXT_PASS (pass_copy_prop, 1);
 121         ...
 122         NEXT_PASS (pass_copy_prop, 8);
 123      in pass-instances.def lead to fields:
 124         opt_pass *pass_copy_prop_1;
 125         ...
 126         opt_pass *pass_copy_prop_8;  */
 127
 128 #define INSERT_PASSES_AFTER(PASS)
 129 #define PUSH_INSERT_PASSES_WITHIN(PASS)
 130 #define POP_INSERT_PASSES()
 131 #define NEXT_PASS(PASS, NUM) opt_pass *PASS ## _ ## NUM
 132 #define NEXT_PASS_WITH_ARG(PASS, NUM, ARG) NEXT_PASS (PASS, NUM)
 133 #define TERMINATE_PASS_LIST(PASS)
 134
 135 #include "pass-instances.def"
 136
 137 #undef INSERT_PASSES_AFTER
 138 #undef PUSH_INSERT_PASSES_WITHIN
 139 #undef POP_INSERT_PASSES
 140 #undef NEXT_PASS
 141 #undef NEXT_PASS_WITH_ARG
 142 #undef TERMINATE_PASS_LIST
 143
 144 }; // class pass_manager
 145
 146 } // namespace gcc
 147
 148 #endif /* ! GCC_PASS_MANAGER_H */
 149