gcc/tree-pass.h

   1 /* Definitions for describing one tree-ssa optimization pass.
   2    Copyright (C) 2004 Free Software Foundation, Inc.
   3    Contributed by Richard Henderson <rth@redhat.com>
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22
  23 #ifndef GCC_TREE_PASS_H
  24 #define GCC_TREE_PASS_H 1
  25
  26 /* Global variables used to communicate with passes.  */
  27 extern FILE *dump_file;
  28 extern int dump_flags;
  29 extern const char *dump_file_name;
  30
  31 extern struct bitmap_head_def *vars_to_rename;
  32
  33 /* Return the dump_file_info for the given phase.  */
  34 extern struct dump_file_info *get_dump_file_info (enum tree_dump_index);
  35
  36 /* Describe one pass.  */
  37 struct tree_opt_pass
  38 {
  39   /* Terse name of the pass used as a fragment of the dump file name.  */
  40   const char *name;
  41
  42   /* If non-null, this pass and all sub-passes are executed only if
  43      the function returns true.  */
  44   bool (*gate) (void);
  45
  46   /* This is the code to run.  If null, then there should be sub-passes
  47      otherwise this pass does nothing.  */
  48   void (*execute) (void);
  49
  50   /* A list of sub-passes to run, dependent on gate predicate.  */
  51   struct tree_opt_pass *sub;
  52
  53   /* Next in the list of passes to run, independent of gate predicate.  */
  54   struct tree_opt_pass *next;
  55
  56   /* Static pass number, used as a fragment of the dump file name.  */
  57   int static_pass_number;
  58
  59   /* The timevar id associated with this pass.  */
  60   /* ??? Ideally would be dynamically assigned.  */
  61   unsigned int tv_id;
  62
  63   /* Sets of properties input and output from this pass.  */
  64   unsigned int properties_required;
  65   unsigned int properties_provided;
  66   unsigned int properties_destroyed;
  67
  68   /* Flags indicating common sets things to do before and after.  */
  69   unsigned int todo_flags_start;
  70   unsigned int todo_flags_finish;
  71
  72   /* Letter for RTL dumps.  */
  73   char letter;
  74 };
  75
  76 /* Define a tree dump switch.  */
  77 struct dump_file_info
  78 {
  79   const char *suffix;           /* suffix to give output file.  */
  80   const char *swtch;            /* command line switch */
  81   int flags;                    /* user flags */
  82   int state;                    /* state of play */
  83   int num;                      /* dump file number */
  84   int letter;                   /* enabling letter for RTL dumps */
  85 };
  86
  87 /* Pass properties.  */
  88 #define PROP_gimple_any         (1 << 0)        /* entire gimple grammar */
  89 #define PROP_gimple_lcf         (1 << 1)        /* lowered control flow */
  90 #define PROP_gimple_leh         (1 << 2)        /* lowered eh */
  91 #define PROP_cfg                (1 << 3)
  92 #define PROP_referenced_vars    (1 << 4)
  93 #define PROP_pta                (1 << 5)
  94 #define PROP_ssa                (1 << 6)
  95 #define PROP_no_crit_edges      (1 << 7)
  96 #define PROP_rtl                (1 << 8)
  97 #define PROP_alias              (1 << 9)
  98
  99 #define PROP_trees \
 100   (PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh)
 101
 102 /* To-do flags.  */
 103 #define TODO_dump_func          (1 << 0)        /* pass doesn't dump itself */
 104 #define TODO_rename_vars        (1 << 1)        /* rewrite new vars to ssa */
 105 #define TODO_ggc_collect        (1 << 2)        /* run the collector */
 106 #define TODO_verify_ssa         (1 << 3)
 107 #define TODO_verify_flow        (1 << 4)
 108 #define TODO_verify_stmts       (1 << 5)
 109 #define TODO_fix_def_def_chains (1 << 6)        /* rewrite def-def chains  */
 110 #define TODO_cleanup_cfg        (1 << 7)        /* cleanup the cfg.  */
 111
 112 #define TODO_verify_all \
 113   (TODO_verify_ssa | TODO_verify_flow | TODO_verify_stmts)
 114
 115
 116 extern struct tree_opt_pass pass_mudflap_1;
 117 extern struct tree_opt_pass pass_mudflap_2;
 118 extern struct tree_opt_pass pass_remove_useless_stmts;
 119 extern struct tree_opt_pass pass_lower_cf;
 120 extern struct tree_opt_pass pass_lower_eh;
 121 extern struct tree_opt_pass pass_build_cfg;
 122 extern struct tree_opt_pass pass_tree_profile;
 123 extern struct tree_opt_pass pass_referenced_vars;
 124 extern struct tree_opt_pass pass_sra;
 125 extern struct tree_opt_pass pass_tail_recursion;
 126 extern struct tree_opt_pass pass_tail_calls;
 127 extern struct tree_opt_pass pass_loop;
 128 extern struct tree_opt_pass pass_loop_init;
 129 extern struct tree_opt_pass pass_lim;
 130 extern struct tree_opt_pass pass_unswitch;
 131 extern struct tree_opt_pass pass_iv_canon;
 132 extern struct tree_opt_pass pass_record_bounds;
 133 extern struct tree_opt_pass pass_if_conversion;
 134 extern struct tree_opt_pass pass_vectorize;
 135 extern struct tree_opt_pass pass_complete_unroll;
 136 extern struct tree_opt_pass pass_iv_optimize;
 137 extern struct tree_opt_pass pass_loop_done;
 138 extern struct tree_opt_pass pass_ch;
 139 extern struct tree_opt_pass pass_ccp;
 140 extern struct tree_opt_pass pass_build_ssa;
 141 extern struct tree_opt_pass pass_del_ssa;
 142 extern struct tree_opt_pass pass_dominator;
 143 extern struct tree_opt_pass pass_dce;
 144 extern struct tree_opt_pass pass_cd_dce;
 145 extern struct tree_opt_pass pass_may_alias;
 146 extern struct tree_opt_pass pass_split_crit_edges;
 147 extern struct tree_opt_pass pass_pre;
 148 extern struct tree_opt_pass pass_profile;
 149 extern struct tree_opt_pass pass_pre_expand;
 150 extern struct tree_opt_pass pass_lower_vector_ssa;
 151 extern struct tree_opt_pass pass_fold_builtins;
 152 extern struct tree_opt_pass pass_early_warn_uninitialized;
 153 extern struct tree_opt_pass pass_late_warn_uninitialized;
 154 extern struct tree_opt_pass pass_warn_function_return;
 155 extern struct tree_opt_pass pass_phiopt;
 156 extern struct tree_opt_pass pass_forwprop;
 157 extern struct tree_opt_pass pass_redundant_phi;
 158 extern struct tree_opt_pass pass_dse;
 159 extern struct tree_opt_pass pass_nrv;
 160 extern struct tree_opt_pass pass_remove_useless_vars;
 161 extern struct tree_opt_pass pass_rename_ssa_copies;
 162 extern struct tree_opt_pass pass_expand;
 163 extern struct tree_opt_pass pass_rest_of_compilation;
 164 extern struct tree_opt_pass pass_fre;
 165 extern struct tree_opt_pass pass_linear_transform;
 166 extern struct tree_opt_pass pass_maybe_create_global_var;
 167
 168 #endif /* GCC_TREE_PASS_H */