gcc/dumpfile.h

   1 /* Definitions for the shared dumpfile.
   2    Copyright (C) 2004-2018 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
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 3, or (at your option)
   9 any later version.
  10
  11 GCC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License 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
  21 #ifndef GCC_DUMPFILE_H
  22 #define GCC_DUMPFILE_H 1
  23
  24 #include "profile-count.h"
  25
  26 /* An attribute for annotating formatting printing functions that use
  27    the dumpfile/optinfo formatting codes.  These are the pretty_printer
  28    format codes (see pretty-print.c), with additional codes for middle-end
  29    specific entities (see dumpfile.c).  */
  30
  31 #if GCC_VERSION >= 9000
  32 #define ATTRIBUTE_GCC_DUMP_PRINTF(m, n) \
  33   __attribute__ ((__format__ (__gcc_dump_printf__, m ,n))) \
  34   ATTRIBUTE_NONNULL(m)
  35 #else
  36 #define ATTRIBUTE_GCC_DUMP_PRINTF(m, n) ATTRIBUTE_NONNULL(m)
  37 #endif
  38
  39 /* Different tree dump places.  When you add new tree dump places,
  40    extend the DUMP_FILES array in dumpfile.c.  */
  41 enum tree_dump_index
  42 {
  43   TDI_none,                     /* No dump */
  44   TDI_cgraph,                   /* dump function call graph.  */
  45   TDI_inheritance,              /* dump type inheritance graph.  */
  46   TDI_clones,                   /* dump IPA cloning decisions.  */
  47   TDI_original,                 /* dump each function before optimizing it */
  48   TDI_gimple,                   /* dump each function after gimplifying it */
  49   TDI_nested,                   /* dump each function after unnesting it */
  50   TDI_lto_stream_out,           /* dump information about lto streaming */
  51
  52   TDI_lang_all,                 /* enable all the language dumps.  */
  53   TDI_tree_all,                 /* enable all the GENERIC/GIMPLE dumps.  */
  54   TDI_rtl_all,                  /* enable all the RTL dumps.  */
  55   TDI_ipa_all,                  /* enable all the IPA dumps.  */
  56
  57   TDI_end
  58 };
  59
  60 /* Enum used to distinguish dump files to types.  */
  61
  62 enum dump_kind
  63 {
  64   DK_none,
  65   DK_lang,
  66   DK_tree,
  67   DK_rtl,
  68   DK_ipa
  69 };
  70
  71 /* Bit masks to control dumping. Not all values are applicable to all
  72    dumps. Add new ones at the end. When you define new values, extend
  73    the DUMP_OPTIONS array in dumpfile.c. The TDF_* flags coexist with
  74    MSG_* flags (for -fopt-info) and the bit values must be chosen to
  75    allow that.  */
  76 enum dump_flag
  77 {
  78   /* Value of TDF_NONE is used just for bits filtered by TDF_KIND_MASK.  */
  79   TDF_NONE  = 0,
  80
  81   /* Dump node addresses.  */
  82   TDF_ADDRESS = (1 << 0),
  83
  84   /* Don't go wild following links.  */
  85   TDF_SLIM = (1 << 1),
  86
  87   /* Don't unparse the function.  */
  88   TDF_RAW = (1 << 2),
  89
  90   /* Show more detailed info about each pass.  */
  91   TDF_DETAILS = (1 << 3),
  92
  93   /* Dump various statistics about each pass.  */
  94   TDF_STATS = (1 << 4),
  95
  96   /* Display basic block boundaries.  */
  97   TDF_BLOCKS = (1 << 5),
  98
  99   /* Display virtual operands.  */
 100   TDF_VOPS = (1 << 6),
 101
 102   /* Display statement line numbers.  */
 103   TDF_LINENO = (1 << 7),
 104
 105   /* Display decl UIDs.  */
 106   TDF_UID  = (1 << 8),
 107
 108   /* Address of stmt.  */
 109   TDF_STMTADDR = (1 << 9),
 110
 111   /* A graph dump is being emitted.  */
 112   TDF_GRAPH = (1 << 10),
 113
 114   /* Display memory symbols in expr.
 115      Implies TDF_VOPS.  */
 116   TDF_MEMSYMS = (1 << 11),
 117
 118   /* A flag to only print the RHS of a gimple stmt.  */
 119   TDF_RHS_ONLY = (1 << 12),
 120
 121   /* Display asm names of decls.  */
 122   TDF_ASMNAME = (1 << 13),
 123
 124   /* Display EH region number holding this gimple statement.  */
 125   TDF_EH  = (1 << 14),
 126
 127   /* Omit UIDs from dumps.  */
 128   TDF_NOUID = (1 << 15),
 129
 130   /* Display alias information.  */
 131   TDF_ALIAS = (1 << 16),
 132
 133   /* Enumerate locals by uid.  */
 134   TDF_ENUMERATE_LOCALS = (1 << 17),
 135
 136   /* Dump cselib details.  */
 137   TDF_CSELIB = (1 << 18),
 138
 139   /* Dump SCEV details.  */
 140   TDF_SCEV = (1 << 19),
 141
 142   /* Dump in GIMPLE FE syntax  */
 143   TDF_GIMPLE = (1 << 20),
 144
 145   /* Dump folding details.  */
 146   TDF_FOLDING = (1 << 21),
 147
 148   /* -fopt-info optimized sources.  */
 149   MSG_OPTIMIZED_LOCATIONS = (1 << 22),
 150
 151   /* Missed opportunities.  */
 152   MSG_MISSED_OPTIMIZATION = (1 << 23),
 153
 154   /* General optimization info.  */
 155   MSG_NOTE = (1 << 24),
 156
 157   MSG_ALL = (MSG_OPTIMIZED_LOCATIONS
 158              | MSG_MISSED_OPTIMIZATION
 159              | MSG_NOTE),
 160
 161   /* Dumping for -fcompare-debug.  */
 162   TDF_COMPARE_DEBUG = (1 << 25),
 163
 164   /* All values.  */
 165   TDF_ALL_VALUES = (1 << 26) - 1
 166 };
 167
 168 /* Dump flags type.  */
 169
 170 typedef enum dump_flag dump_flags_t;
 171
 172 static inline dump_flags_t
 173 operator| (dump_flags_t lhs, dump_flags_t rhs)
 174 {
 175   return (dump_flags_t)((int)lhs | (int)rhs);
 176 }
 177
 178 static inline dump_flags_t
 179 operator& (dump_flags_t lhs, dump_flags_t rhs)
 180 {
 181   return (dump_flags_t)((int)lhs & (int)rhs);
 182 }
 183
 184 static inline dump_flags_t
 185 operator~ (dump_flags_t flags)
 186 {
 187   return (dump_flags_t)~((int)flags);
 188 }
 189
 190 static inline dump_flags_t &
 191 operator|= (dump_flags_t &lhs, dump_flags_t rhs)
 192 {
 193   lhs = (dump_flags_t)((int)lhs | (int)rhs);
 194   return lhs;
 195 }
 196
 197 static inline dump_flags_t &
 198 operator&= (dump_flags_t &lhs, dump_flags_t rhs)
 199 {
 200   lhs = (dump_flags_t)((int)lhs & (int)rhs);
 201   return lhs;
 202 }
 203
 204 /* Flags to control high-level -fopt-info dumps.  Usually these flags
 205    define a group of passes.  An optimization pass can be part of
 206    multiple groups.  */
 207
 208 enum optgroup_flag
 209 {
 210   OPTGROUP_NONE = 0,
 211
 212   /* IPA optimization passes */
 213   OPTGROUP_IPA  = (1 << 1),
 214
 215   /* Loop optimization passes */
 216   OPTGROUP_LOOP = (1 << 2),
 217
 218   /* Inlining passes */
 219   OPTGROUP_INLINE = (1 << 3),
 220
 221   /* OMP (Offloading and Multi Processing) transformations */
 222   OPTGROUP_OMP = (1 << 4),
 223
 224   /* Vectorization passes */
 225   OPTGROUP_VEC = (1 << 5),
 226
 227   /* All other passes */
 228   OPTGROUP_OTHER = (1 << 6),
 229
 230   OPTGROUP_ALL = (OPTGROUP_IPA | OPTGROUP_LOOP | OPTGROUP_INLINE
 231                   | OPTGROUP_OMP | OPTGROUP_VEC | OPTGROUP_OTHER)
 232 };
 233
 234 typedef enum optgroup_flag optgroup_flags_t;
 235
 236 static inline optgroup_flags_t
 237 operator| (optgroup_flags_t lhs, optgroup_flags_t rhs)
 238 {
 239   return (optgroup_flags_t)((int)lhs | (int)rhs);
 240 }
 241
 242 static inline optgroup_flags_t &
 243 operator|= (optgroup_flags_t &lhs, optgroup_flags_t rhs)
 244 {
 245   lhs = (optgroup_flags_t)((int)lhs | (int)rhs);
 246   return lhs;
 247 }
 248
 249 /* Define a tree dump switch.  */
 250 struct dump_file_info
 251 {
 252   /* Suffix to give output file.  */
 253   const char *suffix;
 254   /* Command line dump switch.  */
 255   const char *swtch;
 256   /* Command line glob.  */
 257   const char *glob;
 258   /* Filename for the pass-specific stream.  */
 259   const char *pfilename;
 260   /* Filename for the -fopt-info stream.  */
 261   const char *alt_filename;
 262   /* Pass-specific dump stream.  */
 263   FILE *pstream;
 264   /* -fopt-info stream.  */
 265   FILE *alt_stream;
 266   /* Dump kind.  */
 267   dump_kind dkind;
 268   /* Dump flags.  */
 269   dump_flags_t pflags;
 270   /* A pass flags for -fopt-info.  */
 271   dump_flags_t alt_flags;
 272   /* Flags for -fopt-info given by a user.  */
 273   optgroup_flags_t optgroup_flags;
 274   /* State of pass-specific stream.  */
 275   int pstate;
 276   /* State of the -fopt-info stream.  */
 277   int alt_state;
 278   /* Dump file number.  */
 279   int num;
 280   /* Fields "suffix", "swtch", "glob" can be const strings,
 281      or can be dynamically allocated, needing free.  */
 282   bool owns_strings;
 283   /* When a given dump file is being initialized, this flag is set to true
 284      if the corresponding TDF_graph dump file has also been initialized.  */
 285   bool graph_dump_initialized;
 286 };
 287
 288 /* A class for describing where in the user's source that a dump message
 289    relates to, with various constructors for convenience.
 290    In particular, this lets us associate dump messages
 291    with hotness information (e.g. from PGO), allowing them to
 292    be prioritized by code hotness.  */
 293
 294 class dump_user_location_t
 295 {
 296  public:
 297   /* Default constructor, analogous to UNKNOWN_LOCATION.  */
 298   dump_user_location_t () : m_count (), m_loc (UNKNOWN_LOCATION) {}
 299
 300   /* Construct from a gimple statement (using its location and hotness).  */
 301   dump_user_location_t (const gimple *stmt);
 302
 303   /* Construct from an RTL instruction (using its location and hotness).  */
 304   dump_user_location_t (const rtx_insn *insn);
 305
 306   /* Construct from a location_t.  This one is deprecated (since it doesn't
 307      capture hotness information); it thus needs to be spelled out.  */
 308   static dump_user_location_t
 309   from_location_t (location_t loc)
 310   {
 311     return dump_user_location_t (profile_count (), loc);
 312   }
 313
 314   /* Construct from a function declaration.  This one requires spelling out
 315      to avoid accidentally constructing from other kinds of tree.  */
 316   static dump_user_location_t
 317   from_function_decl (tree fndecl);
 318
 319   profile_count get_count () const { return m_count; }
 320   location_t get_location_t () const { return m_loc; }
 321
 322  private:
 323   /* Private ctor from count and location, for use by from_location_t.  */
 324   dump_user_location_t (profile_count count, location_t loc)
 325     : m_count (count), m_loc (loc)
 326   {}
 327
 328   profile_count m_count;
 329   location_t m_loc;
 330 };
 331
 332 /* A class for identifying where in the compiler's own source
 333    (or a plugin) that a dump message is being emitted from.  */
 334
 335 struct dump_impl_location_t
 336 {
 337   dump_impl_location_t (
 338 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
 339                         const char *file = __builtin_FILE (),
 340                         int line = __builtin_LINE (),
 341                         const char *function = __builtin_FUNCTION ()
 342 #else
 343                         const char *file = __FILE__,
 344                         int line = __LINE__,
 345                         const char *function = NULL
 346 #endif
 347   )
 348   : m_file (file), m_line (line), m_function (function)
 349   {}
 350
 351   const char *m_file;
 352   int m_line;
 353   const char *m_function;
 354 };
 355
 356 /* A bundle of information for describing the location of a dump message:
 357    (a) the source location and hotness within the user's code, together with
 358    (b) the source location within the compiler/plugin.
 359
 360    The constructors use default parameters so that (b) gets sets up
 361    automatically.
 362
 363    The upshot is that you can pass in e.g. a gimple * to dump_printf_loc,
 364    and the dump call will automatically record where in GCC's source
 365    code the dump was emitted from.  */
 366
 367 class dump_location_t
 368 {
 369  public:
 370   /* Default constructor, analogous to UNKNOWN_LOCATION.  */
 371   dump_location_t (const dump_impl_location_t &impl_location
 372                      = dump_impl_location_t ())
 373   : m_user_location (dump_user_location_t ()),
 374     m_impl_location (impl_location)
 375   {
 376   }
 377
 378   /* Construct from a gimple statement (using its location and hotness).  */
 379   dump_location_t (const gimple *stmt,
 380                    const dump_impl_location_t &impl_location
 381                      = dump_impl_location_t ())
 382   : m_user_location (dump_user_location_t (stmt)),
 383     m_impl_location (impl_location)
 384   {
 385   }
 386
 387   /* Construct from an RTL instruction (using its location and hotness).  */
 388   dump_location_t (const rtx_insn *insn,
 389                    const dump_impl_location_t &impl_location
 390                    = dump_impl_location_t ())
 391   : m_user_location (dump_user_location_t (insn)),
 392     m_impl_location (impl_location)
 393   {
 394   }
 395
 396   /* Construct from a dump_user_location_t.  */
 397   dump_location_t (const dump_user_location_t &user_location,
 398                    const dump_impl_location_t &impl_location
 399                      = dump_impl_location_t ())
 400   : m_user_location (user_location),
 401     m_impl_location (impl_location)
 402   {
 403   }
 404
 405   /* Construct from a location_t.  This one is deprecated (since it doesn't
 406      capture hotness information), and thus requires spelling out.  */
 407   static dump_location_t
 408   from_location_t (location_t loc,
 409                    const dump_impl_location_t &impl_location
 410                      = dump_impl_location_t ())
 411   {
 412     return dump_location_t (dump_user_location_t::from_location_t (loc),
 413                             impl_location);
 414   }
 415
 416   const dump_user_location_t &
 417   get_user_location () const { return m_user_location; }
 418
 419   const dump_impl_location_t &
 420   get_impl_location () const { return m_impl_location; }
 421
 422   location_t get_location_t () const
 423   {
 424     return m_user_location.get_location_t ();
 425   }
 426
 427   profile_count get_count () const { return m_user_location.get_count (); }
 428
 429  private:
 430   dump_user_location_t m_user_location;
 431   dump_impl_location_t m_impl_location;
 432 };
 433
 434 /* In dumpfile.c */
 435 extern FILE *dump_begin (int, dump_flags_t *, int part=-1);
 436 extern void dump_end (int, FILE *);
 437 extern int opt_info_switch_p (const char *);
 438 extern const char *dump_flag_name (int);
 439 extern const kv_pair<optgroup_flags_t> optgroup_options[];
 440
 441 /* Global variables used to communicate with passes.  */
 442 extern FILE *dump_file;
 443 extern dump_flags_t dump_flags;
 444 extern const char *dump_file_name;
 445
 446 extern bool dumps_are_enabled;
 447
 448 extern void set_dump_file (FILE *new_dump_file);
 449
 450 /* Return true if any of the dumps is enabled, false otherwise. */
 451 static inline bool
 452 dump_enabled_p (void)
 453 {
 454   return dumps_are_enabled;
 455 }
 456
 457 /* The following API calls (which *don't* take a "FILE *")
 458    write the output to zero or more locations.
 459
 460    Some destinations are written to immediately as dump_* calls
 461    are made; for others, the output is consolidated into an "optinfo"
 462    instance (with its own metadata), and only emitted once the optinfo
 463    is complete.
 464
 465    The destinations are:
 466
 467    (a) the "immediate" destinations:
 468        (a.1) the active dump_file, if any
 469        (a.2) the -fopt-info destination, if any
 470    (b) the "optinfo" destinations, if any:
 471        (b.1) as optimization records
 472
 473    dump_* (MSG_*) --> dumpfile.c --> items --> (a.1) dump_file
 474                                        |   `-> (a.2) alt_dump_file
 475                                        |
 476                                        `--> (b) optinfo
 477                                                 `---> optinfo destinations
 478                                                       (b.1) optimization records
 479
 480    For optinfos, the dump_*_loc mark the beginning of an optinfo
 481    instance: all subsequent dump_* calls are consolidated into
 482    that optinfo, until the next dump_*_loc call (or a change in
 483    dump scope, or a call to dumpfile_ensure_any_optinfo_are_flushed).
 484
 485    A group of dump_* calls should be guarded by:
 486
 487      if (dump_enabled_p ())
 488
 489    to minimize the work done for the common case where dumps
 490    are disabled.  */
 491
 492 extern void dump_printf (dump_flags_t, const char *, ...)
 493   ATTRIBUTE_GCC_DUMP_PRINTF (2, 3);
 494
 495 extern void dump_printf_loc (dump_flags_t, const dump_location_t &,
 496                              const char *, ...)
 497   ATTRIBUTE_GCC_DUMP_PRINTF (3, 0);
 498 extern void dump_function (int phase, tree fn);
 499 extern void dump_basic_block (dump_flags_t, basic_block, int);
 500 extern void dump_generic_expr_loc (dump_flags_t, const dump_location_t &,
 501                                    dump_flags_t, tree);
 502 extern void dump_generic_expr (dump_flags_t, dump_flags_t, tree);
 503 extern void dump_gimple_stmt_loc (dump_flags_t, const dump_location_t &,
 504                                   dump_flags_t, gimple *, int);
 505 extern void dump_gimple_stmt (dump_flags_t, dump_flags_t, gimple *, int);
 506 extern void dump_gimple_expr_loc (dump_flags_t, const dump_location_t &,
 507                                   dump_flags_t, gimple *, int);
 508 extern void dump_gimple_expr (dump_flags_t, dump_flags_t, gimple *, int);
 509 extern void dump_symtab_node (dump_flags_t, symtab_node *);
 510
 511 template<unsigned int N, typename C>
 512 void dump_dec (dump_flags_t, const poly_int<N, C> &);
 513 extern void dump_dec (dump_flags_t, const poly_wide_int &, signop);
 514 extern void dump_hex (dump_flags_t, const poly_wide_int &);
 515
 516 extern void dumpfile_ensure_any_optinfo_are_flushed ();
 517
 518 /* Managing nested scopes, so that dumps can express the call chain
 519    leading to a dump message.  */
 520
 521 extern unsigned int get_dump_scope_depth ();
 522 extern void dump_begin_scope (const char *name, const dump_location_t &loc);
 523 extern void dump_end_scope ();
 524
 525 /* Implementation detail of the AUTO_DUMP_SCOPE macro below.
 526
 527    A RAII-style class intended to make it easy to emit dump
 528    information about entering and exiting a collection of nested
 529    function calls.  */
 530
 531 class auto_dump_scope
 532 {
 533  public:
 534   auto_dump_scope (const char *name, dump_location_t loc)
 535   {
 536     if (dump_enabled_p ())
 537       dump_begin_scope (name, loc);
 538   }
 539   ~auto_dump_scope ()
 540   {
 541     if (dump_enabled_p ())
 542       dump_end_scope ();
 543   }
 544 };
 545
 546 /* A macro for calling:
 547      dump_begin_scope (NAME, LOC);
 548    via an RAII object, thus printing "=== MSG ===\n" to the dumpfile etc,
 549    and then calling
 550      dump_end_scope ();
 551    once the object goes out of scope, thus capturing the nesting of
 552    the scopes.  */
 553
 554 #define AUTO_DUMP_SCOPE(NAME, LOC) \
 555   auto_dump_scope scope (NAME, LOC)
 556
 557 extern void dump_function (int phase, tree fn);
 558 extern void print_combine_total_stats (void);
 559 extern bool enable_rtl_dump_file (void);
 560
 561 /* In tree-dump.c  */
 562 extern void dump_node (const_tree, dump_flags_t, FILE *);
 563
 564 /* In combine.c  */
 565 extern void dump_combine_total_stats (FILE *);
 566 /* In cfghooks.c  */
 567 extern void dump_bb (FILE *, basic_block, int, dump_flags_t);
 568
 569 namespace gcc {
 570
 571 /* A class for managing all of the various dump files used by the
 572    optimization passes.  */
 573
 574 class dump_manager
 575 {
 576 public:
 577
 578   dump_manager ();
 579   ~dump_manager ();
 580
 581   /* Register a dumpfile.
 582
 583      TAKE_OWNERSHIP determines whether callee takes ownership of strings
 584      SUFFIX, SWTCH, and GLOB. */
 585   unsigned int
 586   dump_register (const char *suffix, const char *swtch, const char *glob,
 587                  dump_kind dkind, optgroup_flags_t optgroup_flags,
 588                  bool take_ownership);
 589
 590   /* Allow languages and middle-end to register their dumps before the
 591      optimization passes.  */
 592   void
 593   register_dumps ();
 594
 595   /* Return the dump_file_info for the given phase.  */
 596   struct dump_file_info *
 597   get_dump_file_info (int phase) const;
 598
 599   struct dump_file_info *
 600   get_dump_file_info_by_switch (const char *swtch) const;
 601
 602   /* Return the name of the dump file for the given phase.
 603      If the dump is not enabled, returns NULL.  */
 604   char *
 605   get_dump_file_name (int phase, int part = -1) const;
 606
 607   char *
 608   get_dump_file_name (struct dump_file_info *dfi, int part = -1) const;
 609
 610   int
 611   dump_switch_p (const char *arg);
 612
 613   /* Start a dump for PHASE. Store user-supplied dump flags in
 614      *FLAG_PTR.  Return the number of streams opened.  Set globals
 615      DUMP_FILE, and ALT_DUMP_FILE to point to the opened streams, and
 616      set dump_flags appropriately for both pass dump stream and
 617      -fopt-info stream. */
 618   int
 619   dump_start (int phase, dump_flags_t *flag_ptr);
 620
 621   /* Finish a tree dump for PHASE and close associated dump streams.  Also
 622      reset the globals DUMP_FILE, ALT_DUMP_FILE, and DUMP_FLAGS.  */
 623   void
 624   dump_finish (int phase);
 625
 626   FILE *
 627   dump_begin (int phase, dump_flags_t *flag_ptr, int part);
 628
 629   /* Returns nonzero if tree dump PHASE has been initialized.  */
 630   int
 631   dump_initialized_p (int phase) const;
 632
 633   /* Returns the switch name of PHASE.  */
 634   const char *
 635   dump_flag_name (int phase) const;
 636
 637 private:
 638
 639   int
 640   dump_phase_enabled_p (int phase) const;
 641
 642   int
 643   dump_switch_p_1 (const char *arg, struct dump_file_info *dfi, bool doglob);
 644
 645   int
 646   dump_enable_all (dump_kind dkind, dump_flags_t flags, const char *filename);
 647
 648   int
 649   opt_info_enable_passes (optgroup_flags_t optgroup_flags, dump_flags_t flags,
 650                           const char *filename);
 651
 652 private:
 653
 654   /* Dynamically registered dump files and switches.  */
 655   int m_next_dump;
 656   struct dump_file_info *m_extra_dump_files;
 657   size_t m_extra_dump_files_in_use;
 658   size_t m_extra_dump_files_alloced;
 659
 660   /* Grant access to dump_enable_all.  */
 661   friend bool ::enable_rtl_dump_file (void);
 662
 663   /* Grant access to opt_info_enable_passes.  */
 664   friend int ::opt_info_switch_p (const char *arg);
 665
 666 }; // class dump_manager
 667
 668 } // namespace gcc
 669
 670 #endif /* GCC_DUMPFILE_H */