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
  30 extern struct bitmap_head_def *vars_to_rename;
  31
  32 /* Describe one pass.  */
  33 struct tree_opt_pass
  34 {
  35   /* Terse name of the pass used as a fragment of the dump file name.  */
  36   const char *name;
  37
  38   /* If non-null, this pass and all sub-passes are executed only if
  39      the function returns true.  */
  40   bool (*gate) (void);
  41
  42   /* This is the code to run.  If null, then there should be sub-passes
  43      otherwise this pass does nothing.  */
  44   void (*execute) (void);
  45
  46   /* A list of sub-passes to run, dependent on gate predicate.  */
  47   struct tree_opt_pass *sub;
  48
  49   /* Next in the list of passes to run, independent of gate predicate.  */
  50   struct tree_opt_pass *next;
  51
  52   /* Static pass number, used as a fragment of the dump file name.  */
  53   unsigned int static_pass_number;
  54
  55   /* The timevar id associated with this pass.  */
  56   /* ??? Ideally would be dynamically assigned.  */
  57   unsigned int tv_id;
  58
  59   /* Sets of properties input and output from this pass.  */
  60   unsigned int properties_required;
  61   unsigned int properties_provided;
  62   unsigned int properties_destroyed;
  63
  64   /* Flags indicating common sets things to do before and after.  */
  65   unsigned int todo_flags_start;
  66   unsigned int todo_flags_finish;
  67 };
  68
  69 /* Pass properties.  */
  70 #define PROP_gimple_any         (1 << 0)        /* entire gimple grammar */
  71 #define PROP_gimple_lcf         (1 << 1)        /* lowered control flow */
  72 #define PROP_gimple_leh         (1 << 2)        /* lowered eh */
  73 #define PROP_cfg                (1 << 3)
  74 #define PROP_referenced_vars    (1 << 4)
  75 #define PROP_pta                (1 << 5)
  76 #define PROP_ssa                (1 << 6)
  77 #define PROP_no_crit_edges      (1 << 7)
  78 #define PROP_rtl                (1 << 8)
  79
  80 #define PROP_trees \
  81   (PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh)
  82
  83 /* To-do flags.  */
  84 #define TODO_dump_func          (1 << 0)        /* pass doesn't dump itself */
  85 #define TODO_rename_vars        (1 << 1)        /* rewrite new vars to ssa */
  86 #define TODO_ggc_collect        (1 << 2)        /* run the collector */
  87 #define TODO_verify_ssa         (1 << 3)
  88 #define TODO_verify_flow        (1 << 4)
  89 #define TODO_verify_stmts       (1 << 5)
  90
  91 #define TODO_verify_all \
  92   (TODO_verify_ssa | TODO_verify_flow | TODO_verify_stmts)
  93
  94
  95 extern struct tree_opt_pass pass_mudflap_1;
  96 extern struct tree_opt_pass pass_mudflap_2;
  97 extern struct tree_opt_pass pass_remove_useless_stmts;
  98 extern struct tree_opt_pass pass_lower_cf;
  99 extern struct tree_opt_pass pass_lower_eh;
 100 extern struct tree_opt_pass pass_build_cfg;
 101 extern struct tree_opt_pass pass_tree_profile;
 102 extern struct tree_opt_pass pass_referenced_vars;
 103 extern struct tree_opt_pass pass_build_pta;
 104 extern struct tree_opt_pass pass_del_pta;
 105 extern struct tree_opt_pass pass_sra;
 106 extern struct tree_opt_pass pass_tail_recursion;
 107 extern struct tree_opt_pass pass_tail_calls;
 108 extern struct tree_opt_pass pass_loop;
 109 extern struct tree_opt_pass pass_ch;
 110 extern struct tree_opt_pass pass_ccp;
 111 extern struct tree_opt_pass pass_build_ssa;
 112 extern struct tree_opt_pass pass_del_ssa;
 113 extern struct tree_opt_pass pass_dominator;
 114 extern struct tree_opt_pass pass_dce;
 115 extern struct tree_opt_pass pass_cd_dce;
 116 extern struct tree_opt_pass pass_may_alias;
 117 extern struct tree_opt_pass pass_split_crit_edges;
 118 extern struct tree_opt_pass pass_pre;
 119 extern struct tree_opt_pass pass_profile;
 120 extern struct tree_opt_pass pass_lower_complex;
 121 extern struct tree_opt_pass pass_fold_builtins;
 122 extern struct tree_opt_pass pass_early_warn_uninitialized;
 123 extern struct tree_opt_pass pass_late_warn_uninitialized;
 124 extern struct tree_opt_pass pass_warn_function_return;
 125 extern struct tree_opt_pass pass_phiopt;
 126 extern struct tree_opt_pass pass_forwprop;
 127 extern struct tree_opt_pass pass_redundant_phi;
 128 extern struct tree_opt_pass pass_dse;
 129 extern struct tree_opt_pass pass_nrv;
 130 extern struct tree_opt_pass pass_remove_useless_vars;
 131 extern struct tree_opt_pass pass_rename_ssa_copies;
 132 extern struct tree_opt_pass pass_expand;
 133 extern struct tree_opt_pass pass_rest_of_compilation;
 134
 135
 136 #endif /* GCC_TREE_PASS_H */