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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [tree-pass.h] - Blame information for rev 844

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/* Definitions for describing one tree-ssa optimization pass.
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   Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
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   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
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
11
 
12
GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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GNU General Public License for more details.
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17
You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3.  If not see
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<http://www.gnu.org/licenses/>.  */
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21
 
22
#ifndef GCC_TREE_PASS_H
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#define GCC_TREE_PASS_H 1
24
 
25
/* In tree-dump.c */
26
 
27
/* Different tree dump places.  When you add new tree dump places,
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   extend the DUMP_FILES array in tree-dump.c.  */
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enum tree_dump_index
30
{
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  TDI_none,                     /* No dump */
32
  TDI_cgraph,                   /* dump function call graph.  */
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  TDI_tu,                       /* dump the whole translation unit.  */
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  TDI_class,                    /* dump class hierarchy.  */
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  TDI_original,                 /* dump each function before optimizing it */
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  TDI_generic,                  /* dump each function after genericizing it */
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  TDI_nested,                   /* dump each function after unnesting it */
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  TDI_inlined,                  /* dump each function after inlining
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                                   within it.  */
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  TDI_vcg,                      /* create a VCG graph file for each
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                                   function's flowgraph.  */
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  TDI_tree_all,                 /* enable all the GENERIC/GIMPLE dumps.  */
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  TDI_rtl_all,                  /* enable all the RTL dumps.  */
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  TDI_ipa_all,                  /* enable all the IPA dumps.  */
45
 
46
  TDI_end
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};
48
 
49
/* Bit masks to control dumping. Not all values are applicable to
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   all dumps. Add new ones at the end. When you define new
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   values, extend the DUMP_OPTIONS array in tree-dump.c */
52
#define TDF_ADDRESS     (1 << 0)        /* dump node addresses */
53
#define TDF_SLIM        (1 << 1)        /* don't go wild following links */
54
#define TDF_RAW         (1 << 2)        /* don't unparse the function */
55
#define TDF_DETAILS     (1 << 3)        /* show more detailed info about
56
                                           each pass */
57
#define TDF_STATS       (1 << 4)        /* dump various statistics about
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                                           each pass */
59
#define TDF_BLOCKS      (1 << 5)        /* display basic block boundaries */
60
#define TDF_VOPS        (1 << 6)        /* display virtual operands */
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#define TDF_LINENO      (1 << 7)        /* display statement line numbers */
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#define TDF_UID         (1 << 8)        /* display decl UIDs */
63
 
64
#define TDF_TREE        (1 << 9)        /* is a tree dump */
65
#define TDF_RTL         (1 << 10)       /* is a RTL dump */
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#define TDF_IPA         (1 << 11)       /* is an IPA dump */
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#define TDF_STMTADDR    (1 << 12)       /* Address of stmt.  */
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69
#define TDF_GRAPH       (1 << 13)       /* a graph dump is being emitted */
70
 
71
extern char *get_dump_file_name (enum tree_dump_index);
72
extern int dump_enabled_p (enum tree_dump_index);
73
extern int dump_initialized_p (enum tree_dump_index);
74
extern FILE *dump_begin (enum tree_dump_index, int *);
75
extern void dump_end (enum tree_dump_index, FILE *);
76
extern void dump_node (tree, int, FILE *);
77
extern int dump_switch_p (const char *);
78
extern const char *dump_flag_name (enum tree_dump_index);
79
 
80
/* Global variables used to communicate with passes.  */
81
extern FILE *dump_file;
82
extern int dump_flags;
83
extern const char *dump_file_name;
84
 
85
/* Return the dump_file_info for the given phase.  */
86
extern struct dump_file_info *get_dump_file_info (enum tree_dump_index);
87
 
88
/* Describe one pass.  */
89
struct tree_opt_pass
90
{
91
  /* Terse name of the pass used as a fragment of the dump file name.  */
92
  const char *name;
93
 
94
  /* If non-null, this pass and all sub-passes are executed only if
95
     the function returns true.  */
96
  bool (*gate) (void);
97
 
98
  /* This is the code to run.  If null, then there should be sub-passes
99
     otherwise this pass does nothing.  The return value contains
100
     TODOs to execute in addition to those in TODO_flags_finish.   */
101
  unsigned int (*execute) (void);
102
 
103
  /* A list of sub-passes to run, dependent on gate predicate.  */
104
  struct tree_opt_pass *sub;
105
 
106
  /* Next in the list of passes to run, independent of gate predicate.  */
107
  struct tree_opt_pass *next;
108
 
109
  /* Static pass number, used as a fragment of the dump file name.  */
110
  int static_pass_number;
111
 
112
  /* The timevar id associated with this pass.  */
113
  /* ??? Ideally would be dynamically assigned.  */
114
  unsigned int tv_id;
115
 
116
  /* Sets of properties input and output from this pass.  */
117
  unsigned int properties_required;
118
  unsigned int properties_provided;
119
  unsigned int properties_destroyed;
120
 
121
  /* Flags indicating common sets things to do before and after.  */
122
  unsigned int todo_flags_start;
123
  unsigned int todo_flags_finish;
124
 
125
  /* Letter for RTL dumps.  */
126
  char letter;
127
};
128
 
129
/* Define a tree dump switch.  */
130
struct dump_file_info
131
{
132
  const char *suffix;           /* suffix to give output file.  */
133
  const char *swtch;            /* command line switch */
134
  const char *glob;             /* command line glob  */
135
  int flags;                    /* user flags */
136
  int state;                    /* state of play */
137
  int num;                      /* dump file number */
138
  int letter;                   /* enabling letter for RTL dumps */
139
};
140
 
141
/* Pass properties.  */
142
#define PROP_gimple_any         (1 << 0)        /* entire gimple grammar */
143
#define PROP_gimple_lcf         (1 << 1)        /* lowered control flow */
144
#define PROP_gimple_leh         (1 << 2)        /* lowered eh */
145
#define PROP_cfg                (1 << 3)
146
#define PROP_referenced_vars    (1 << 4)
147
#define PROP_pta                (1 << 5)
148
#define PROP_ssa                (1 << 6)
149
#define PROP_no_crit_edges      (1 << 7)
150
#define PROP_rtl                (1 << 8)
151
#define PROP_alias              (1 << 9)
152
#define PROP_gimple_lomp        (1 << 10)       /* lowered OpenMP directives */
153
#define PROP_smt_usage          (1 << 11)       /* which SMT's are
154
                                                   used alone.  */
155
 
156
#define PROP_trees \
157
  (PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh | PROP_gimple_lomp)
158
 
159
/* To-do flags.  */
160
#define TODO_dump_func                  (1 << 0)
161
#define TODO_ggc_collect                (1 << 1)
162
#define TODO_verify_ssa                 (1 << 2) 
163
#define TODO_verify_flow                (1 << 3)
164
#define TODO_verify_stmts               (1 << 4)
165
#define TODO_cleanup_cfg                (1 << 5)
166
#define TODO_verify_loops               (1 << 6)
167
#define TODO_dump_cgraph                (1 << 7)
168
 
169
/* To-do flags for calls to update_ssa.  */
170
 
171
/* Update the SSA form inserting PHI nodes for newly exposed symbols
172
   and virtual names marked for updating.  When updating real names,
173
   only insert PHI nodes for a real name O_j in blocks reached by all
174
   the new and old definitions for O_j.  If the iterated dominance
175
   frontier for O_j is not pruned, we may end up inserting PHI nodes
176
   in blocks that have one or more edges with no incoming definition
177
   for O_j.  This would lead to uninitialized warnings for O_j's
178
   symbol.  */
179
#define TODO_update_ssa                 (1 << 8)
180
 
181
/* Update the SSA form without inserting any new PHI nodes at all.
182
   This is used by passes that have either inserted all the PHI nodes
183
   themselves or passes that need only to patch use-def and def-def
184
   chains for virtuals (e.g., DCE).  */
185
#define TODO_update_ssa_no_phi          (1 << 9)
186
 
187
/* Insert PHI nodes everywhere they are needed.  No pruning of the
188
   IDF is done.  This is used by passes that need the PHI nodes for
189
   O_j even if it means that some arguments will come from the default
190
   definition of O_j's symbol (e.g., pass_linear_transform).
191
 
192
   WARNING: If you need to use this flag, chances are that your pass
193
   may be doing something wrong.  Inserting PHI nodes for an old name
194
   where not all edges carry a new replacement may lead to silent
195
   codegen errors or spurious uninitialized warnings.  */
196
#define TODO_update_ssa_full_phi        (1 << 10)
197
 
198
/* Passes that update the SSA form on their own may want to delegate
199
   the updating of virtual names to the generic updater.  Since FUD
200
   chains are easier to maintain, this simplifies the work they need
201
   to do.  NOTE: If this flag is used, any OLD->NEW mappings for real
202
   names are explicitly destroyed and only the symbols marked for
203
   renaming are processed.  */
204
#define TODO_update_ssa_only_virtuals   (1 << 11)
205
 
206
/* Some passes leave unused local variables that can be removed from
207
   cfun->unexpanded_var_list.  This reduces the size of dump files and
208
   the memory footprint for VAR_DECLs.  */
209
#define TODO_remove_unused_locals       (1 << 12)
210
 
211
/* Internally used for the first in a sequence of passes.  It is set
212
   for the passes that are handed to register_dump_files.  */
213
#define TODO_set_props                  (1 << 13)
214
 
215
/* Set by passes that may make SMT's that were previously never used
216
   in statements, used.  */
217
#define TODO_update_smt_usage           (1 << 14)
218
 
219
#define TODO_update_ssa_any             \
220
    (TODO_update_ssa                    \
221
     | TODO_update_ssa_no_phi           \
222
     | TODO_update_ssa_full_phi         \
223
     | TODO_update_ssa_only_virtuals)
224
 
225
#define TODO_verify_all \
226
  (TODO_verify_ssa | TODO_verify_flow | TODO_verify_stmts)
227
 
228
extern void tree_lowering_passes (tree decl);
229
 
230
extern struct tree_opt_pass pass_mudflap_1;
231
extern struct tree_opt_pass pass_mudflap_2;
232
extern struct tree_opt_pass pass_remove_useless_stmts;
233
extern struct tree_opt_pass pass_lower_cf;
234
extern struct tree_opt_pass pass_lower_eh;
235
extern struct tree_opt_pass pass_build_cfg;
236
extern struct tree_opt_pass pass_tree_profile;
237
extern struct tree_opt_pass pass_early_tree_profile;
238
extern struct tree_opt_pass pass_cleanup_cfg;
239
extern struct tree_opt_pass pass_referenced_vars;
240
extern struct tree_opt_pass pass_sra;
241
extern struct tree_opt_pass pass_tail_recursion;
242
extern struct tree_opt_pass pass_tail_calls;
243
extern struct tree_opt_pass pass_tree_loop;
244
extern struct tree_opt_pass pass_tree_loop_init;
245
extern struct tree_opt_pass pass_lim;
246
extern struct tree_opt_pass pass_tree_unswitch;
247
extern struct tree_opt_pass pass_iv_canon;
248
extern struct tree_opt_pass pass_scev_cprop;
249
extern struct tree_opt_pass pass_empty_loop;
250
extern struct tree_opt_pass pass_record_bounds;
251
extern struct tree_opt_pass pass_if_conversion;
252
extern struct tree_opt_pass pass_vectorize;
253
extern struct tree_opt_pass pass_complete_unroll;
254
extern struct tree_opt_pass pass_loop_prefetch;
255
extern struct tree_opt_pass pass_iv_optimize;
256
extern struct tree_opt_pass pass_tree_loop_done;
257
extern struct tree_opt_pass pass_ch;
258
extern struct tree_opt_pass pass_ccp;
259
extern struct tree_opt_pass pass_phi_only_cprop;
260
extern struct tree_opt_pass pass_build_ssa;
261
extern struct tree_opt_pass pass_del_ssa;
262
extern struct tree_opt_pass pass_dominator;
263
extern struct tree_opt_pass pass_dce;
264
extern struct tree_opt_pass pass_dce_loop;
265
extern struct tree_opt_pass pass_cd_dce;
266
extern struct tree_opt_pass pass_merge_phi;
267
extern struct tree_opt_pass pass_may_alias;
268
extern struct tree_opt_pass pass_split_crit_edges;
269
extern struct tree_opt_pass pass_pre;
270
extern struct tree_opt_pass pass_profile;
271
extern struct tree_opt_pass pass_lower_complex_O0;
272
extern struct tree_opt_pass pass_lower_complex;
273
extern struct tree_opt_pass pass_lower_vector;
274
extern struct tree_opt_pass pass_lower_vector_ssa;
275
extern struct tree_opt_pass pass_lower_omp;
276
extern struct tree_opt_pass pass_expand_omp;
277
extern struct tree_opt_pass pass_object_sizes;
278
extern struct tree_opt_pass pass_fold_builtins;
279
extern struct tree_opt_pass pass_stdarg;
280
extern struct tree_opt_pass pass_early_warn_uninitialized;
281
extern struct tree_opt_pass pass_late_warn_uninitialized;
282
extern struct tree_opt_pass pass_cse_reciprocals;
283
extern struct tree_opt_pass pass_warn_function_return;
284
extern struct tree_opt_pass pass_warn_function_noreturn;
285
extern struct tree_opt_pass pass_phiopt;
286
extern struct tree_opt_pass pass_forwprop;
287
extern struct tree_opt_pass pass_redundant_phi;
288
extern struct tree_opt_pass pass_dse;
289
extern struct tree_opt_pass pass_nrv;
290
extern struct tree_opt_pass pass_mark_used_blocks;
291
extern struct tree_opt_pass pass_rename_ssa_copies;
292
extern struct tree_opt_pass pass_expand;
293
extern struct tree_opt_pass pass_rest_of_compilation;
294
extern struct tree_opt_pass pass_sink_code;
295
extern struct tree_opt_pass pass_fre;
296
extern struct tree_opt_pass pass_linear_transform;
297
extern struct tree_opt_pass pass_copy_prop;
298
extern struct tree_opt_pass pass_store_ccp;
299
extern struct tree_opt_pass pass_store_copy_prop;
300
extern struct tree_opt_pass pass_vrp;
301
extern struct tree_opt_pass pass_create_structure_vars;
302
extern struct tree_opt_pass pass_uncprop;
303
extern struct tree_opt_pass pass_return_slot;
304
extern struct tree_opt_pass pass_reassoc;
305
extern struct tree_opt_pass pass_rebuild_cgraph_edges;
306
extern struct tree_opt_pass pass_reset_cc_flags;
307
 
308
/* IPA Passes */
309
extern struct tree_opt_pass pass_ipa_cp;
310
extern struct tree_opt_pass pass_ipa_inline;
311
extern struct tree_opt_pass pass_early_ipa_inline;
312
extern struct tree_opt_pass pass_ipa_reference;
313
extern struct tree_opt_pass pass_ipa_pure_const;
314
extern struct tree_opt_pass pass_ipa_type_escape;
315
extern struct tree_opt_pass pass_ipa_pta;
316
extern struct tree_opt_pass pass_early_local_passes;
317
 
318
extern struct tree_opt_pass pass_all_optimizations;
319
extern struct tree_opt_pass pass_cleanup_cfg_post_optimizing;
320
extern struct tree_opt_pass pass_free_cfg_annotations;
321
extern struct tree_opt_pass pass_free_datastructures;
322
extern struct tree_opt_pass pass_init_datastructures;
323
extern struct tree_opt_pass pass_fixup_cfg;
324
 
325
extern struct tree_opt_pass pass_init_function;
326
extern struct tree_opt_pass pass_jump;
327
extern struct tree_opt_pass pass_insn_locators_initialize;
328
extern struct tree_opt_pass pass_rtl_eh;
329
extern struct tree_opt_pass pass_initial_value_sets;
330
extern struct tree_opt_pass pass_unshare_all_rtl;
331
extern struct tree_opt_pass pass_instantiate_virtual_regs;
332
extern struct tree_opt_pass pass_jump2;
333
extern struct tree_opt_pass pass_cse;
334
extern struct tree_opt_pass pass_gcse;
335
extern struct tree_opt_pass pass_jump_bypass;
336
extern struct tree_opt_pass pass_profiling;
337
extern struct tree_opt_pass pass_rtl_ifcvt;
338
extern struct tree_opt_pass pass_tracer;
339
 
340
extern struct tree_opt_pass pass_loop2;
341
extern struct tree_opt_pass pass_rtl_loop_init;
342
extern struct tree_opt_pass pass_rtl_move_loop_invariants;
343
extern struct tree_opt_pass pass_rtl_unswitch;
344
extern struct tree_opt_pass pass_rtl_unroll_and_peel_loops;
345
extern struct tree_opt_pass pass_rtl_doloop;
346
extern struct tree_opt_pass pass_rtl_loop_done;
347
 
348
extern struct tree_opt_pass pass_web;
349
extern struct tree_opt_pass pass_cse2;
350
extern struct tree_opt_pass pass_life;
351
extern struct tree_opt_pass pass_combine;
352
extern struct tree_opt_pass pass_if_after_combine;
353
extern struct tree_opt_pass pass_partition_blocks;
354
extern struct tree_opt_pass pass_partition_blocks;
355
extern struct tree_opt_pass pass_regmove;
356
extern struct tree_opt_pass pass_split_all_insns;
357
extern struct tree_opt_pass pass_mode_switching;
358
extern struct tree_opt_pass pass_see;
359
extern struct tree_opt_pass pass_recompute_reg_usage;
360
extern struct tree_opt_pass pass_sms;
361
extern struct tree_opt_pass pass_sched;
362
extern struct tree_opt_pass pass_local_alloc;
363
extern struct tree_opt_pass pass_global_alloc;
364
extern struct tree_opt_pass pass_postreload;
365
extern struct tree_opt_pass pass_clean_state;
366
extern struct tree_opt_pass pass_branch_prob;
367
extern struct tree_opt_pass pass_value_profile_transformations;
368
extern struct tree_opt_pass pass_remove_death_notes;
369
extern struct tree_opt_pass pass_postreload_cse;
370
extern struct tree_opt_pass pass_gcse2;
371
extern struct tree_opt_pass pass_flow2;
372
extern struct tree_opt_pass pass_stack_adjustments;
373
extern struct tree_opt_pass pass_peephole2;
374
extern struct tree_opt_pass pass_if_after_reload;
375
extern struct tree_opt_pass pass_regrename;
376
extern struct tree_opt_pass pass_reorder_blocks;
377
extern struct tree_opt_pass pass_branch_target_load_optimize;
378
extern struct tree_opt_pass pass_leaf_regs;
379
extern struct tree_opt_pass pass_sched2;
380
extern struct tree_opt_pass pass_stack_regs;
381
extern struct tree_opt_pass pass_compute_alignments;
382
extern struct tree_opt_pass pass_duplicate_computed_gotos;
383
extern struct tree_opt_pass pass_variable_tracking;
384
extern struct tree_opt_pass pass_free_cfg;
385
extern struct tree_opt_pass pass_machine_reorg;
386
extern struct tree_opt_pass pass_purge_lineno_notes;
387
extern struct tree_opt_pass pass_cleanup_barriers;
388
extern struct tree_opt_pass pass_delay_slots;
389
extern struct tree_opt_pass pass_split_for_shorten_branches;
390
extern struct tree_opt_pass pass_split_before_regstack;
391
extern struct tree_opt_pass pass_convert_to_eh_region_ranges;
392
extern struct tree_opt_pass pass_shorten_branches;
393
extern struct tree_opt_pass pass_set_nothrow_function_flags;
394
extern struct tree_opt_pass pass_final;
395
extern struct tree_opt_pass pass_rtl_seqabstr;
396
 
397
/* The root of the compilation pass tree, once constructed.  */
398
extern struct tree_opt_pass *all_passes, *all_ipa_passes, *all_lowering_passes;
399
 
400
extern void execute_pass_list (struct tree_opt_pass *);
401
extern void execute_ipa_pass_list (struct tree_opt_pass *);
402
 
403
#endif /* GCC_TREE_PASS_H */

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