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/* Loop optimizations over tree-ssa.
   Copyright (C) 2003, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
 
This file is part of GCC.
 
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3, or (at your option) any
later version.
 
GCC is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.
 
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.  */
 
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
#include "rtl.h"
#include "tm_p.h"
#include "hard-reg-set.h"
#include "basic-block.h"
#include "output.h"
#include "diagnostic.h"
#include "tree-flow.h"
#include "tree-dump.h"
#include "tree-pass.h"
#include "timevar.h"
#include "cfgloop.h"
#include "flags.h"
#include "tree-inline.h"
#include "tree-scalar-evolution.h"
#include "toplev.h"
#include "tree-vectorizer.h"
 
/* The loop superpass.  */
 
static bool
gate_tree_loop (void)
{
  return flag_tree_loop_optimize != 0;
}
 
struct gimple_opt_pass pass_tree_loop =
{
 {
  GIMPLE_PASS,
  "loop",                               /* name */
  gate_tree_loop,                       /* gate */
  NULL,                                 /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                     /* static_pass_number */
  TV_TREE_LOOP,                         /* tv_id */
  PROP_cfg,                             /* properties_required */
  0,                                     /* properties_provided */
  0,                                     /* properties_destroyed */
  TODO_ggc_collect,                     /* todo_flags_start */
  TODO_dump_func | TODO_verify_ssa | TODO_ggc_collect   /* todo_flags_finish */
 }
};
 
/* Loop optimizer initialization.  */
 
static unsigned int
tree_ssa_loop_init (void)
{
  loop_optimizer_init (LOOPS_NORMAL
                       | LOOPS_HAVE_RECORDED_EXITS);
  rewrite_into_loop_closed_ssa (NULL, TODO_update_ssa);
 
  if (number_of_loops () <= 1)
    return 0;
 
  scev_initialize ();
  return 0;
}
 
struct gimple_opt_pass pass_tree_loop_init =
{
 {
  GIMPLE_PASS,
  "loopinit",                           /* name */
  NULL,                                 /* gate */
  tree_ssa_loop_init,                   /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                     /* static_pass_number */
  TV_TREE_LOOP_INIT,                    /* tv_id */
  PROP_cfg,                             /* properties_required */
  0,                                     /* properties_provided */
  0,                                     /* properties_destroyed */
  0,                                     /* todo_flags_start */
  TODO_dump_func | TODO_verify_loops    /* todo_flags_finish */
 }
};
 
/* Loop invariant motion pass.  */
 
static unsigned int
tree_ssa_loop_im (void)
{
  if (number_of_loops () <= 1)
    return 0;
 
  tree_ssa_lim ();
  return 0;
}
 
static bool
gate_tree_ssa_loop_im (void)
{
  return flag_tree_loop_im != 0;
}
 
struct gimple_opt_pass pass_lim =
{
 {
  GIMPLE_PASS,
  "lim",                                /* name */
  gate_tree_ssa_loop_im,                /* gate */
  tree_ssa_loop_im,                     /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                     /* static_pass_number */
  TV_LIM,                               /* tv_id */
  PROP_cfg,                             /* properties_required */
  0,                                     /* properties_provided */
  0,                                     /* properties_destroyed */
  0,                                     /* todo_flags_start */
  TODO_dump_func | TODO_verify_loops    /* todo_flags_finish */
 }
};
 
/* Loop unswitching pass.  */
 
static unsigned int
tree_ssa_loop_unswitch (void)
{
  if (number_of_loops () <= 1)
    return 0;
 
  return tree_ssa_unswitch_loops ();
}
 
static bool
gate_tree_ssa_loop_unswitch (void)
{
  return flag_unswitch_loops != 0;
}
 
struct gimple_opt_pass pass_tree_unswitch =
{
 {
  GIMPLE_PASS,
  "unswitch",                           /* name */
  gate_tree_ssa_loop_unswitch,          /* gate */
  tree_ssa_loop_unswitch,               /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                     /* static_pass_number */
  TV_TREE_LOOP_UNSWITCH,                /* tv_id */
  PROP_cfg,                             /* properties_required */
  0,                                     /* properties_provided */
  0,                                     /* properties_destroyed */
  0,                                     /* todo_flags_start */
  TODO_ggc_collect | TODO_dump_func
    | TODO_verify_loops                 /* todo_flags_finish */
 }
};
 
/* Predictive commoning.  */
 
static unsigned
run_tree_predictive_commoning (void)
{
  if (!current_loops)
    return 0;
 
  tree_predictive_commoning ();
  return 0;
}
 
static bool
gate_tree_predictive_commoning (void)
{
  return flag_predictive_commoning != 0;
}
 
struct gimple_opt_pass pass_predcom =
{
 {
  GIMPLE_PASS,
  "pcom",                               /* name */
  gate_tree_predictive_commoning,       /* gate */
  run_tree_predictive_commoning,        /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                     /* static_pass_number */
  TV_PREDCOM,                           /* tv_id */
  PROP_cfg,                             /* properties_required */
  0,                                     /* properties_provided */
  0,                                     /* properties_destroyed */
  0,                                     /* todo_flags_start */
  TODO_dump_func | TODO_verify_loops
    | TODO_update_ssa_only_virtuals     /* todo_flags_finish */
 }
};
 
/* Loop autovectorization.  */
 
static unsigned int
tree_vectorize (void)
{
  if (number_of_loops () <= 1)
    return 0;
 
  return vectorize_loops ();
}
 
static bool
gate_tree_vectorize (void)
{
  return flag_tree_vectorize;
}
 
struct gimple_opt_pass pass_vectorize =
{
 {
  GIMPLE_PASS,
  "vect",                               /* name */
  gate_tree_vectorize,                  /* gate */
  tree_vectorize,                       /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                    /* static_pass_number */
  TV_TREE_VECTORIZATION,                /* tv_id */
  PROP_cfg | PROP_ssa,                  /* properties_required */
  0,                                    /* properties_provided */
  0,                                    /* properties_destroyed */
  TODO_verify_loops,                    /* todo_flags_start */
  TODO_dump_func | TODO_update_ssa
    | TODO_ggc_collect                  /* todo_flags_finish */
 }
};
 
/* Loop nest optimizations.  */
 
static unsigned int
tree_linear_transform (void)
{
  if (number_of_loops () <= 1)
    return 0;
 
  linear_transform_loops ();
  return 0;
}
 
static bool
gate_tree_linear_transform (void)
{
  return flag_tree_loop_linear != 0;
}
 
struct gimple_opt_pass pass_linear_transform =
{
 {
  GIMPLE_PASS,
  "ltrans",                             /* name */
  gate_tree_linear_transform,           /* gate */
  tree_linear_transform,                /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                     /* static_pass_number */
  TV_TREE_LINEAR_TRANSFORM,             /* tv_id */
  PROP_cfg | PROP_ssa,                  /* properties_required */
  0,                                     /* properties_provided */
  0,                                     /* properties_destroyed */
  0,                                     /* todo_flags_start */
  TODO_dump_func | TODO_verify_loops
    | TODO_update_ssa_only_virtuals
    | TODO_ggc_collect                  /* todo_flags_finish */
 }
};
 
/* GRAPHITE optimizations.  */
 
static unsigned int
graphite_transforms (void)
{
  if (!current_loops)
    return 0;
 
  graphite_transform_loops ();
 
  return 0;
}
 
static bool
gate_graphite_transforms (void)
{
  /* Enable -fgraphite pass if any one of the graphite optimization flags
     is turned on.  */
  if (flag_loop_block || flag_loop_interchange || flag_loop_strip_mine
      || flag_graphite_identity || flag_loop_parallelize_all)
    flag_graphite = 1;
 
  return flag_graphite != 0;
}
 
struct gimple_opt_pass pass_graphite_transforms =
{
 {
  GIMPLE_PASS,
  "graphite",                           /* name */
  gate_graphite_transforms,             /* gate */
  graphite_transforms,                  /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                     /* static_pass_number */
  TV_GRAPHITE_TRANSFORMS,               /* tv_id */
  PROP_cfg | PROP_ssa,                  /* properties_required */
  0,                                     /* properties_provided */
  0,                                     /* properties_destroyed */
  0,                                     /* todo_flags_start */
  TODO_verify_loops                     /* todo_flags_finish */
 }
};
 
/* Check the correctness of the data dependence analyzers.  */
 
static unsigned int
check_data_deps (void)
{
  if (number_of_loops () <= 1)
    return 0;
 
  tree_check_data_deps ();
  return 0;
}
 
static bool
gate_check_data_deps (void)
{
  return flag_check_data_deps != 0;
}
 
struct gimple_opt_pass pass_check_data_deps =
{
 {
  GIMPLE_PASS,
  "ckdd",                               /* name */
  gate_check_data_deps,                 /* gate */
  check_data_deps,                      /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                     /* static_pass_number */
  TV_CHECK_DATA_DEPS,                   /* tv_id */
  PROP_cfg | PROP_ssa,                  /* properties_required */
  0,                                     /* properties_provided */
  0,                                     /* properties_destroyed */
  0,                                     /* todo_flags_start */
  TODO_dump_func                        /* todo_flags_finish */
 }
};
 
/* Canonical induction variable creation pass.  */
 
static unsigned int
tree_ssa_loop_ivcanon (void)
{
  if (number_of_loops () <= 1)
    return 0;
 
  return canonicalize_induction_variables ();
}
 
static bool
gate_tree_ssa_loop_ivcanon (void)
{
  return flag_tree_loop_ivcanon != 0;
}
 
struct gimple_opt_pass pass_iv_canon =
{
 {
  GIMPLE_PASS,
  "ivcanon",                            /* name */
  gate_tree_ssa_loop_ivcanon,           /* gate */
  tree_ssa_loop_ivcanon,                /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                     /* static_pass_number */
  TV_TREE_LOOP_IVCANON,                 /* tv_id */
  PROP_cfg | PROP_ssa,                  /* properties_required */
  0,                                     /* properties_provided */
  0,                                     /* properties_destroyed */
  0,                                     /* todo_flags_start */
  TODO_dump_func | TODO_verify_loops    /* todo_flags_finish */
 }
};
 
/* Propagation of constants using scev.  */
 
static bool
gate_scev_const_prop (void)
{
  return flag_tree_scev_cprop;
}
 
struct gimple_opt_pass pass_scev_cprop =
{
 {
  GIMPLE_PASS,
  "sccp",                               /* name */
  gate_scev_const_prop,                 /* gate */
  scev_const_prop,                      /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                     /* static_pass_number */
  TV_SCEV_CONST,                        /* tv_id */
  PROP_cfg | PROP_ssa,                  /* properties_required */
  0,                                     /* properties_provided */
  0,                                     /* properties_destroyed */
  0,                                     /* todo_flags_start */
  TODO_dump_func | TODO_cleanup_cfg
    | TODO_update_ssa_only_virtuals
                                        /* todo_flags_finish */
 }
};
 
/* Record bounds on numbers of iterations of loops.  */
 
static unsigned int
tree_ssa_loop_bounds (void)
{
  if (number_of_loops () <= 1)
    return 0;
 
  estimate_numbers_of_iterations ();
  scev_reset ();
  return 0;
}
 
struct gimple_opt_pass pass_record_bounds =
{
 {
  GIMPLE_PASS,
  "*record_bounds",                     /* name */
  NULL,                                 /* gate */
  tree_ssa_loop_bounds,                 /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                     /* static_pass_number */
  TV_TREE_LOOP_BOUNDS,                  /* tv_id */
  PROP_cfg | PROP_ssa,                  /* properties_required */
  0,                                     /* properties_provided */
  0,                                     /* properties_destroyed */
  0,                                     /* todo_flags_start */
 
 }
};
 
/* Complete unrolling of loops.  */
 
static unsigned int
tree_complete_unroll (void)
{
  if (number_of_loops () <= 1)
    return 0;
 
  return tree_unroll_loops_completely (flag_unroll_loops
                                       || flag_peel_loops
                                       || optimize >= 3, true);
}
 
static bool
gate_tree_complete_unroll (void)
{
  return true;
}
 
struct gimple_opt_pass pass_complete_unroll =
{
 {
  GIMPLE_PASS,
  "cunroll",                            /* name */
  gate_tree_complete_unroll,            /* gate */
  tree_complete_unroll,                 /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                     /* static_pass_number */
  TV_COMPLETE_UNROLL,                   /* tv_id */
  PROP_cfg | PROP_ssa,                  /* properties_required */
  0,                                     /* properties_provided */
  0,                                     /* properties_destroyed */
  0,                                     /* todo_flags_start */
  TODO_dump_func | TODO_verify_loops
    | TODO_ggc_collect                  /* todo_flags_finish */
 }
};
 
/* Complete unrolling of inner loops.  */
 
static unsigned int
tree_complete_unroll_inner (void)
{
  unsigned ret = 0;
 
  loop_optimizer_init (LOOPS_NORMAL
                       | LOOPS_HAVE_RECORDED_EXITS);
  if (number_of_loops () > 1)
    {
      scev_initialize ();
      ret = tree_unroll_loops_completely (optimize >= 3, false);
      free_numbers_of_iterations_estimates ();
      scev_finalize ();
    }
  loop_optimizer_finalize ();
 
  return ret;
}
 
static bool
gate_tree_complete_unroll_inner (void)
{
  return optimize >= 2;
}
 
struct gimple_opt_pass pass_complete_unrolli =
{
 {
  GIMPLE_PASS,
  "cunrolli",                           /* name */
  gate_tree_complete_unroll_inner,      /* gate */
  tree_complete_unroll_inner,           /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                     /* static_pass_number */
  TV_COMPLETE_UNROLL,                   /* tv_id */
  PROP_cfg | PROP_ssa,                  /* properties_required */
  0,                                     /* properties_provided */
  0,                                     /* properties_destroyed */
  0,                                     /* todo_flags_start */
  TODO_dump_func | TODO_verify_loops
    | TODO_ggc_collect                  /* todo_flags_finish */
 }
};
 
/* Parallelization.  */
 
static bool
gate_tree_parallelize_loops (void)
{
  return flag_tree_parallelize_loops > 1;
}
 
static unsigned
tree_parallelize_loops (void)
{
  if (number_of_loops () <= 1)
    return 0;
 
  if (parallelize_loops ())
    return TODO_cleanup_cfg | TODO_rebuild_alias;
  return 0;
}
 
struct gimple_opt_pass pass_parallelize_loops =
{
 {
  GIMPLE_PASS,
  "parloops",                           /* name */
  gate_tree_parallelize_loops,          /* gate */
  tree_parallelize_loops,               /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                     /* static_pass_number */
  TV_TREE_PARALLELIZE_LOOPS,            /* tv_id */
  PROP_cfg | PROP_ssa,                  /* properties_required */
  0,                                     /* properties_provided */
  0,                                     /* properties_destroyed */
  0,                                     /* todo_flags_start */
  TODO_dump_func | TODO_verify_loops    /* todo_flags_finish */
 }
};
 
/* Prefetching.  */
 
static unsigned int
tree_ssa_loop_prefetch (void)
{
  if (number_of_loops () <= 1)
    return 0;
 
  return tree_ssa_prefetch_arrays ();
}
 
static bool
gate_tree_ssa_loop_prefetch (void)
{
  return flag_prefetch_loop_arrays != 0;
}
 
struct gimple_opt_pass pass_loop_prefetch =
{
 {
  GIMPLE_PASS,
  "aprefetch",                          /* name */
  gate_tree_ssa_loop_prefetch,          /* gate */
  tree_ssa_loop_prefetch,               /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                     /* static_pass_number */
  TV_TREE_PREFETCH,                     /* tv_id */
  PROP_cfg | PROP_ssa,                  /* properties_required */
  0,                                     /* properties_provided */
  0,                                     /* properties_destroyed */
  0,                                     /* todo_flags_start */
  TODO_dump_func | TODO_verify_loops    /* todo_flags_finish */
 }
};
 
/* Induction variable optimizations.  */
 
static unsigned int
tree_ssa_loop_ivopts (void)
{
  if (number_of_loops () <= 1)
    return 0;
 
  tree_ssa_iv_optimize ();
  return 0;
}
 
static bool
gate_tree_ssa_loop_ivopts (void)
{
  return flag_ivopts != 0;
}
 
struct gimple_opt_pass pass_iv_optimize =
{
 {
  GIMPLE_PASS,
  "ivopts",                             /* name */
  gate_tree_ssa_loop_ivopts,            /* gate */
  tree_ssa_loop_ivopts,                 /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                     /* static_pass_number */
  TV_TREE_LOOP_IVOPTS,                  /* tv_id */
  PROP_cfg | PROP_ssa,                  /* properties_required */
  0,                                     /* properties_provided */
  0,                                     /* properties_destroyed */
  0,                                     /* todo_flags_start */
  TODO_dump_func | TODO_verify_loops
  | TODO_update_ssa | TODO_ggc_collect  /* todo_flags_finish */
 }
};
 
/* Loop optimizer finalization.  */
 
static unsigned int
tree_ssa_loop_done (void)
{
  free_numbers_of_iterations_estimates ();
  scev_finalize ();
  loop_optimizer_finalize ();
  return 0;
}
 
struct gimple_opt_pass pass_tree_loop_done =
{
 {
  GIMPLE_PASS,
  "loopdone",                           /* name */
  NULL,                                 /* gate */
  tree_ssa_loop_done,                   /* execute */
  NULL,                                 /* sub */
  NULL,                                 /* next */
  0,                                     /* static_pass_number */
  TV_TREE_LOOP_FINI,                    /* tv_id */
  PROP_cfg,                             /* properties_required */
  0,                                     /* properties_provided */
  0,                                     /* properties_destroyed */
  0,                                     /* todo_flags_start */
  TODO_cleanup_cfg | TODO_dump_func     /* todo_flags_finish */
 }
};

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[/] [openrisc/] [trunk/] [gnu-stable/] [gcc-4.5.1/] [gcc/] [tree-ssa-loop.c] - Blame information for rev 861

Line No.	Rev	Author	Line
1	280	jeremybenn	`/* Loop optimizations over tree-ssa.`
2			`Copyright (C) 2003, 2005, 2006, 2007, 2008 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`
7			`under the terms of the GNU General Public License as published by the`
8			`Free Software Foundation; either version 3, or (at your option) any`
9			`later version.`
10
11			`GCC is distributed in the hope that it will be useful, but WITHOUT`
12			`ANY 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			`#include "config.h"`
21			`#include "system.h"`
22			`#include "coretypes.h"`
23			`#include "tm.h"`
24			`#include "tree.h"`
25			`#include "rtl.h"`
26			`#include "tm_p.h"`
27			`#include "hard-reg-set.h"`
28			`#include "basic-block.h"`
29			`#include "output.h"`
30			`#include "diagnostic.h"`
31			`#include "tree-flow.h"`
32			`#include "tree-dump.h"`
33			`#include "tree-pass.h"`
34			`#include "timevar.h"`
35			`#include "cfgloop.h"`
36			`#include "flags.h"`
37			`#include "tree-inline.h"`
38			`#include "tree-scalar-evolution.h"`
39			`#include "toplev.h"`
40			`#include "tree-vectorizer.h"`
41
42			`/* The loop superpass. */`
43
44			`static bool`
45			`gate_tree_loop (void)`
46			`{`
47			`return flag_tree_loop_optimize != 0;`
48			`}`
49
50			`struct gimple_opt_pass pass_tree_loop =`
51			`{`
52			`{`
53			`GIMPLE_PASS,`
54			`"loop", /* name */`
55			`gate_tree_loop, /* gate */`
56			`NULL, /* execute */`
57			`NULL, /* sub */`
58			`NULL, /* next */`
59			`0, /* static_pass_number */`
60			`TV_TREE_LOOP, /* tv_id */`
61			`PROP_cfg, /* properties_required */`
62			`0, /* properties_provided */`
63			`0, /* properties_destroyed */`
64			`TODO_ggc_collect, /* todo_flags_start */`
65			`TODO_dump_func \| TODO_verify_ssa \| TODO_ggc_collect /* todo_flags_finish */`
66			`}`
67			`};`
68
69			`/* Loop optimizer initialization. */`
70
71			`static unsigned int`
72			`tree_ssa_loop_init (void)`
73			`{`
74			`loop_optimizer_init (LOOPS_NORMAL`
75			`\| LOOPS_HAVE_RECORDED_EXITS);`
76			`rewrite_into_loop_closed_ssa (NULL, TODO_update_ssa);`
77
78			`if (number_of_loops () <= 1)`
79			`return 0;`
80
81			`scev_initialize ();`
82			`return 0;`
83			`}`
84
85			`struct gimple_opt_pass pass_tree_loop_init =`
86			`{`
87			`{`
88			`GIMPLE_PASS,`
89			`"loopinit", /* name */`
90			`NULL, /* gate */`
91			`tree_ssa_loop_init, /* execute */`
92			`NULL, /* sub */`
93			`NULL, /* next */`
94			`0, /* static_pass_number */`
95			`TV_TREE_LOOP_INIT, /* tv_id */`
96			`PROP_cfg, /* properties_required */`
97			`0, /* properties_provided */`
98			`0, /* properties_destroyed */`
99			`0, /* todo_flags_start */`
100			`TODO_dump_func \| TODO_verify_loops /* todo_flags_finish */`
101			`}`
102			`};`
103
104			`/* Loop invariant motion pass. */`
105
106			`static unsigned int`
107			`tree_ssa_loop_im (void)`
108			`{`
109			`if (number_of_loops () <= 1)`
110			`return 0;`
111
112			`tree_ssa_lim ();`
113			`return 0;`
114			`}`
115
116			`static bool`
117			`gate_tree_ssa_loop_im (void)`
118			`{`
119			`return flag_tree_loop_im != 0;`
120			`}`
121
122			`struct gimple_opt_pass pass_lim =`
123			`{`
124			`{`
125			`GIMPLE_PASS,`
126			`"lim", /* name */`
127			`gate_tree_ssa_loop_im, /* gate */`
128			`tree_ssa_loop_im, /* execute */`
129			`NULL, /* sub */`
130			`NULL, /* next */`
131			`0, /* static_pass_number */`
132			`TV_LIM, /* tv_id */`
133			`PROP_cfg, /* properties_required */`
134			`0, /* properties_provided */`
135			`0, /* properties_destroyed */`
136			`0, /* todo_flags_start */`
137			`TODO_dump_func \| TODO_verify_loops /* todo_flags_finish */`
138			`}`
139			`};`
140
141			`/* Loop unswitching pass. */`
142
143			`static unsigned int`
144			`tree_ssa_loop_unswitch (void)`
145			`{`
146			`if (number_of_loops () <= 1)`
147			`return 0;`
148
149			`return tree_ssa_unswitch_loops ();`
150			`}`
151
152			`static bool`
153			`gate_tree_ssa_loop_unswitch (void)`
154			`{`
155			`return flag_unswitch_loops != 0;`
156			`}`
157
158			`struct gimple_opt_pass pass_tree_unswitch =`
159			`{`
160			`{`
161			`GIMPLE_PASS,`
162			`"unswitch", /* name */`
163			`gate_tree_ssa_loop_unswitch, /* gate */`
164			`tree_ssa_loop_unswitch, /* execute */`
165			`NULL, /* sub */`
166			`NULL, /* next */`
167			`0, /* static_pass_number */`
168			`TV_TREE_LOOP_UNSWITCH, /* tv_id */`
169			`PROP_cfg, /* properties_required */`
170			`0, /* properties_provided */`
171			`0, /* properties_destroyed */`
172			`0, /* todo_flags_start */`
173			`TODO_ggc_collect \| TODO_dump_func`
174			`\| TODO_verify_loops /* todo_flags_finish */`
175			`}`
176			`};`
177
178			`/* Predictive commoning. */`
179
180			`static unsigned`
181			`run_tree_predictive_commoning (void)`
182			`{`
183			`if (!current_loops)`
184			`return 0;`
185
186			`tree_predictive_commoning ();`
187			`return 0;`
188			`}`
189
190			`static bool`
191			`gate_tree_predictive_commoning (void)`
192			`{`
193			`return flag_predictive_commoning != 0;`
194			`}`
195
196			`struct gimple_opt_pass pass_predcom =`
197			`{`
198			`{`
199			`GIMPLE_PASS,`
200			`"pcom", /* name */`
201			`gate_tree_predictive_commoning, /* gate */`
202			`run_tree_predictive_commoning, /* execute */`
203			`NULL, /* sub */`
204			`NULL, /* next */`
205			`0, /* static_pass_number */`
206			`TV_PREDCOM, /* tv_id */`
207			`PROP_cfg, /* properties_required */`
208			`0, /* properties_provided */`
209			`0, /* properties_destroyed */`
210			`0, /* todo_flags_start */`
211			`TODO_dump_func \| TODO_verify_loops`
212			`\| TODO_update_ssa_only_virtuals /* todo_flags_finish */`
213			`}`
214			`};`
215
216			`/* Loop autovectorization. */`
217
218			`static unsigned int`
219			`tree_vectorize (void)`
220			`{`
221			`if (number_of_loops () <= 1)`
222			`return 0;`
223
224			`return vectorize_loops ();`
225			`}`
226
227			`static bool`
228			`gate_tree_vectorize (void)`
229			`{`
230			`return flag_tree_vectorize;`
231			`}`
232
233			`struct gimple_opt_pass pass_vectorize =`
234			`{`
235			`{`
236			`GIMPLE_PASS,`
237			`"vect", /* name */`
238			`gate_tree_vectorize, /* gate */`
239			`tree_vectorize, /* execute */`
240			`NULL, /* sub */`
241			`NULL, /* next */`
242			`0, /* static_pass_number */`
243			`TV_TREE_VECTORIZATION, /* tv_id */`
244			`PROP_cfg \| PROP_ssa, /* properties_required */`
245			`0, /* properties_provided */`
246			`0, /* properties_destroyed */`
247			`TODO_verify_loops, /* todo_flags_start */`
248			`TODO_dump_func \| TODO_update_ssa`
249			`\| TODO_ggc_collect /* todo_flags_finish */`
250			`}`
251			`};`
252
253			`/* Loop nest optimizations. */`
254
255			`static unsigned int`
256			`tree_linear_transform (void)`
257			`{`
258			`if (number_of_loops () <= 1)`
259			`return 0;`
260
261			`linear_transform_loops ();`
262			`return 0;`
263			`}`
264
265			`static bool`
266			`gate_tree_linear_transform (void)`
267			`{`
268			`return flag_tree_loop_linear != 0;`
269			`}`
270
271			`struct gimple_opt_pass pass_linear_transform =`
272			`{`
273			`{`
274			`GIMPLE_PASS,`
275			`"ltrans", /* name */`
276			`gate_tree_linear_transform, /* gate */`
277			`tree_linear_transform, /* execute */`
278			`NULL, /* sub */`
279			`NULL, /* next */`
280			`0, /* static_pass_number */`
281			`TV_TREE_LINEAR_TRANSFORM, /* tv_id */`
282			`PROP_cfg \| PROP_ssa, /* properties_required */`
283			`0, /* properties_provided */`
284			`0, /* properties_destroyed */`
285			`0, /* todo_flags_start */`
286			`TODO_dump_func \| TODO_verify_loops`
287			`\| TODO_update_ssa_only_virtuals`
288			`\| TODO_ggc_collect /* todo_flags_finish */`
289			`}`
290			`};`
291
292			`/* GRAPHITE optimizations. */`
293
294			`static unsigned int`
295			`graphite_transforms (void)`
296			`{`
297			`if (!current_loops)`
298			`return 0;`
299
300			`graphite_transform_loops ();`
301
302			`return 0;`
303			`}`
304
305			`static bool`
306			`gate_graphite_transforms (void)`
307			`{`
308			`/* Enable -fgraphite pass if any one of the graphite optimization flags`
309			`is turned on. */`
310			`if (flag_loop_block \|\| flag_loop_interchange \|\| flag_loop_strip_mine`
311			`\|\| flag_graphite_identity \|\| flag_loop_parallelize_all)`
312			`flag_graphite = 1;`
313
314			`return flag_graphite != 0;`
315			`}`
316
317			`struct gimple_opt_pass pass_graphite_transforms =`
318			`{`
319			`{`
320			`GIMPLE_PASS,`
321			`"graphite", /* name */`
322			`gate_graphite_transforms, /* gate */`
323			`graphite_transforms, /* execute */`
324			`NULL, /* sub */`
325			`NULL, /* next */`
326			`0, /* static_pass_number */`
327			`TV_GRAPHITE_TRANSFORMS, /* tv_id */`
328			`PROP_cfg \| PROP_ssa, /* properties_required */`
329			`0, /* properties_provided */`
330			`0, /* properties_destroyed */`
331			`0, /* todo_flags_start */`
332			`TODO_verify_loops /* todo_flags_finish */`
333			`}`
334			`};`
335
336			`/* Check the correctness of the data dependence analyzers. */`
337
338			`static unsigned int`
339			`check_data_deps (void)`
340			`{`
341			`if (number_of_loops () <= 1)`
342			`return 0;`
343
344			`tree_check_data_deps ();`
345			`return 0;`
346			`}`
347
348			`static bool`
349			`gate_check_data_deps (void)`
350			`{`
351			`return flag_check_data_deps != 0;`
352			`}`
353
354			`struct gimple_opt_pass pass_check_data_deps =`
355			`{`
356			`{`
357			`GIMPLE_PASS,`
358			`"ckdd", /* name */`
359			`gate_check_data_deps, /* gate */`
360			`check_data_deps, /* execute */`
361			`NULL, /* sub */`
362			`NULL, /* next */`
363			`0, /* static_pass_number */`
364			`TV_CHECK_DATA_DEPS, /* tv_id */`
365			`PROP_cfg \| PROP_ssa, /* properties_required */`
366			`0, /* properties_provided */`
367			`0, /* properties_destroyed */`
368			`0, /* todo_flags_start */`
369			`TODO_dump_func /* todo_flags_finish */`
370			`}`
371			`};`
372
373			`/* Canonical induction variable creation pass. */`
374
375			`static unsigned int`
376			`tree_ssa_loop_ivcanon (void)`
377			`{`
378			`if (number_of_loops () <= 1)`
379			`return 0;`
380
381			`return canonicalize_induction_variables ();`
382			`}`
383
384			`static bool`
385			`gate_tree_ssa_loop_ivcanon (void)`
386			`{`
387			`return flag_tree_loop_ivcanon != 0;`
388			`}`
389
390			`struct gimple_opt_pass pass_iv_canon =`
391			`{`
392			`{`
393			`GIMPLE_PASS,`
394			`"ivcanon", /* name */`
395			`gate_tree_ssa_loop_ivcanon, /* gate */`
396			`tree_ssa_loop_ivcanon, /* execute */`
397			`NULL, /* sub */`
398			`NULL, /* next */`
399			`0, /* static_pass_number */`
400			`TV_TREE_LOOP_IVCANON, /* tv_id */`
401			`PROP_cfg \| PROP_ssa, /* properties_required */`
402			`0, /* properties_provided */`
403			`0, /* properties_destroyed */`
404			`0, /* todo_flags_start */`
405			`TODO_dump_func \| TODO_verify_loops /* todo_flags_finish */`
406			`}`
407			`};`
408
409			`/* Propagation of constants using scev. */`
410
411			`static bool`
412			`gate_scev_const_prop (void)`
413			`{`
414			`return flag_tree_scev_cprop;`
415			`}`
416
417			`struct gimple_opt_pass pass_scev_cprop =`
418			`{`
419			`{`
420			`GIMPLE_PASS,`
421			`"sccp", /* name */`
422			`gate_scev_const_prop, /* gate */`
423			`scev_const_prop, /* execute */`
424			`NULL, /* sub */`
425			`NULL, /* next */`
426			`0, /* static_pass_number */`
427			`TV_SCEV_CONST, /* tv_id */`
428			`PROP_cfg \| PROP_ssa, /* properties_required */`
429			`0, /* properties_provided */`
430			`0, /* properties_destroyed */`
431			`0, /* todo_flags_start */`
432			`TODO_dump_func \| TODO_cleanup_cfg`
433			`\| TODO_update_ssa_only_virtuals`
434			`/* todo_flags_finish */`
435			`}`
436			`};`
437
438			`/* Record bounds on numbers of iterations of loops. */`
439
440			`static unsigned int`
441			`tree_ssa_loop_bounds (void)`
442			`{`
443			`if (number_of_loops () <= 1)`
444			`return 0;`
445
446			`estimate_numbers_of_iterations ();`
447			`scev_reset ();`
448			`return 0;`
449			`}`
450
451			`struct gimple_opt_pass pass_record_bounds =`
452			`{`
453			`{`
454			`GIMPLE_PASS,`
455			`"record_bounds", / name */`
456			`NULL, /* gate */`
457			`tree_ssa_loop_bounds, /* execute */`
458			`NULL, /* sub */`
459			`NULL, /* next */`
460			`0, /* static_pass_number */`
461			`TV_TREE_LOOP_BOUNDS, /* tv_id */`
462			`PROP_cfg \| PROP_ssa, /* properties_required */`
463			`0, /* properties_provided */`
464			`0, /* properties_destroyed */`
465			`0, /* todo_flags_start */`
466
467			`}`
468			`};`
469
470			`/* Complete unrolling of loops. */`
471
472			`static unsigned int`
473			`tree_complete_unroll (void)`
474			`{`
475			`if (number_of_loops () <= 1)`
476			`return 0;`
477
478			`return tree_unroll_loops_completely (flag_unroll_loops`
479			`\|\| flag_peel_loops`
480			`\|\| optimize >= 3, true);`
481			`}`
482
483			`static bool`
484			`gate_tree_complete_unroll (void)`
485			`{`
486			`return true;`
487			`}`
488
489			`struct gimple_opt_pass pass_complete_unroll =`
490			`{`
491			`{`
492			`GIMPLE_PASS,`
493			`"cunroll", /* name */`
494			`gate_tree_complete_unroll, /* gate */`
495			`tree_complete_unroll, /* execute */`
496			`NULL, /* sub */`
497			`NULL, /* next */`
498			`0, /* static_pass_number */`
499			`TV_COMPLETE_UNROLL, /* tv_id */`
500			`PROP_cfg \| PROP_ssa, /* properties_required */`
501			`0, /* properties_provided */`
502			`0, /* properties_destroyed */`
503			`0, /* todo_flags_start */`
504			`TODO_dump_func \| TODO_verify_loops`
505			`\| TODO_ggc_collect /* todo_flags_finish */`
506			`}`
507			`};`
508
509			`/* Complete unrolling of inner loops. */`
510
511			`static unsigned int`
512			`tree_complete_unroll_inner (void)`
513			`{`
514			`unsigned ret = 0;`
515
516			`loop_optimizer_init (LOOPS_NORMAL`
517			`\| LOOPS_HAVE_RECORDED_EXITS);`
518			`if (number_of_loops () > 1)`
519			`{`
520			`scev_initialize ();`
521			`ret = tree_unroll_loops_completely (optimize >= 3, false);`
522			`free_numbers_of_iterations_estimates ();`
523			`scev_finalize ();`
524			`}`
525			`loop_optimizer_finalize ();`
526
527			`return ret;`
528			`}`
529
530			`static bool`
531			`gate_tree_complete_unroll_inner (void)`
532			`{`
533			`return optimize >= 2;`
534			`}`
535
536			`struct gimple_opt_pass pass_complete_unrolli =`
537			`{`
538			`{`
539			`GIMPLE_PASS,`
540			`"cunrolli", /* name */`
541			`gate_tree_complete_unroll_inner, /* gate */`
542			`tree_complete_unroll_inner, /* execute */`
543			`NULL, /* sub */`
544			`NULL, /* next */`
545			`0, /* static_pass_number */`
546			`TV_COMPLETE_UNROLL, /* tv_id */`
547			`PROP_cfg \| PROP_ssa, /* properties_required */`
548			`0, /* properties_provided */`
549			`0, /* properties_destroyed */`
550			`0, /* todo_flags_start */`
551			`TODO_dump_func \| TODO_verify_loops`
552			`\| TODO_ggc_collect /* todo_flags_finish */`
553			`}`
554			`};`
555
556			`/* Parallelization. */`
557
558			`static bool`
559			`gate_tree_parallelize_loops (void)`
560			`{`
561			`return flag_tree_parallelize_loops > 1;`
562			`}`
563
564			`static unsigned`
565			`tree_parallelize_loops (void)`
566			`{`
567			`if (number_of_loops () <= 1)`
568			`return 0;`
569
570			`if (parallelize_loops ())`
571			`return TODO_cleanup_cfg \| TODO_rebuild_alias;`
572			`return 0;`
573			`}`
574
575			`struct gimple_opt_pass pass_parallelize_loops =`
576			`{`
577			`{`
578			`GIMPLE_PASS,`
579			`"parloops", /* name */`
580			`gate_tree_parallelize_loops, /* gate */`
581			`tree_parallelize_loops, /* execute */`
582			`NULL, /* sub */`
583			`NULL, /* next */`
584			`0, /* static_pass_number */`
585			`TV_TREE_PARALLELIZE_LOOPS, /* tv_id */`
586			`PROP_cfg \| PROP_ssa, /* properties_required */`
587			`0, /* properties_provided */`
588			`0, /* properties_destroyed */`
589			`0, /* todo_flags_start */`
590			`TODO_dump_func \| TODO_verify_loops /* todo_flags_finish */`
591			`}`
592			`};`
593
594			`/* Prefetching. */`
595
596			`static unsigned int`
597			`tree_ssa_loop_prefetch (void)`
598			`{`
599			`if (number_of_loops () <= 1)`
600			`return 0;`
601
602			`return tree_ssa_prefetch_arrays ();`
603			`}`
604
605			`static bool`
606			`gate_tree_ssa_loop_prefetch (void)`
607			`{`
608			`return flag_prefetch_loop_arrays != 0;`
609			`}`
610
611			`struct gimple_opt_pass pass_loop_prefetch =`
612			`{`
613			`{`
614			`GIMPLE_PASS,`
615			`"aprefetch", /* name */`
616			`gate_tree_ssa_loop_prefetch, /* gate */`
617			`tree_ssa_loop_prefetch, /* execute */`
618			`NULL, /* sub */`
619			`NULL, /* next */`
620			`0, /* static_pass_number */`
621			`TV_TREE_PREFETCH, /* tv_id */`
622			`PROP_cfg \| PROP_ssa, /* properties_required */`
623			`0, /* properties_provided */`
624			`0, /* properties_destroyed */`
625			`0, /* todo_flags_start */`
626			`TODO_dump_func \| TODO_verify_loops /* todo_flags_finish */`
627			`}`
628			`};`
629
630			`/* Induction variable optimizations. */`
631
632			`static unsigned int`
633			`tree_ssa_loop_ivopts (void)`
634			`{`
635			`if (number_of_loops () <= 1)`
636			`return 0;`
637
638			`tree_ssa_iv_optimize ();`
639			`return 0;`
640			`}`
641
642			`static bool`
643			`gate_tree_ssa_loop_ivopts (void)`
644			`{`
645			`return flag_ivopts != 0;`
646			`}`
647
648			`struct gimple_opt_pass pass_iv_optimize =`
649			`{`
650			`{`
651			`GIMPLE_PASS,`
652			`"ivopts", /* name */`
653			`gate_tree_ssa_loop_ivopts, /* gate */`
654			`tree_ssa_loop_ivopts, /* execute */`
655			`NULL, /* sub */`
656			`NULL, /* next */`
657			`0, /* static_pass_number */`
658			`TV_TREE_LOOP_IVOPTS, /* tv_id */`
659			`PROP_cfg \| PROP_ssa, /* properties_required */`
660			`0, /* properties_provided */`
661			`0, /* properties_destroyed */`
662			`0, /* todo_flags_start */`
663			`TODO_dump_func \| TODO_verify_loops`
664			`\| TODO_update_ssa \| TODO_ggc_collect /* todo_flags_finish */`
665			`}`
666			`};`
667
668			`/* Loop optimizer finalization. */`
669
670			`static unsigned int`
671			`tree_ssa_loop_done (void)`
672			`{`
673			`free_numbers_of_iterations_estimates ();`
674			`scev_finalize ();`
675			`loop_optimizer_finalize ();`
676			`return 0;`
677			`}`
678
679			`struct gimple_opt_pass pass_tree_loop_done =`
680			`{`
681			`{`
682			`GIMPLE_PASS,`
683			`"loopdone", /* name */`
684			`NULL, /* gate */`
685			`tree_ssa_loop_done, /* execute */`
686			`NULL, /* sub */`
687			`NULL, /* next */`
688			`0, /* static_pass_number */`
689			`TV_TREE_LOOP_FINI, /* tv_id */`
690			`PROP_cfg, /* properties_required */`
691			`0, /* properties_provided */`
692			`0, /* properties_destroyed */`
693			`0, /* todo_flags_start */`
694			`TODO_cleanup_cfg \| TODO_dump_func /* todo_flags_finish */`
695			`}`
696			`};`