gcc/timevar.c

   1 /* Timing variables for measuring compiler performance.
   2    Copyright (C) 2000-2015 Free Software Foundation, Inc.
   3    Contributed by Alex Samuel <samuel@codesourcery.com>
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 3, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #include "config.h"
  22 #include "system.h"
  23 #include "coretypes.h"
  24 #include "timevar.h"
  25 #include "options.h"
  26
  27 #ifndef HAVE_CLOCK_T
  28 typedef int clock_t;
  29 #endif
  30
  31 #ifndef HAVE_STRUCT_TMS
  32 struct tms
  33 {
  34   clock_t tms_utime;
  35   clock_t tms_stime;
  36   clock_t tms_cutime;
  37   clock_t tms_cstime;
  38 };
  39 #endif
  40
  41 #ifndef RUSAGE_SELF
  42 # define RUSAGE_SELF 0
  43 #endif
  44
  45 /* Calculation of scale factor to convert ticks to microseconds.
  46    We mustn't use CLOCKS_PER_SEC except with clock().  */
  47 #if HAVE_SYSCONF && defined _SC_CLK_TCK
  48 # define TICKS_PER_SECOND sysconf (_SC_CLK_TCK) /* POSIX 1003.1-1996 */
  49 #else
  50 # ifdef CLK_TCK
  51 #  define TICKS_PER_SECOND CLK_TCK /* POSIX 1003.1-1988; obsolescent */
  52 # else
  53 #  ifdef HZ
  54 #   define TICKS_PER_SECOND HZ  /* traditional UNIX */
  55 #  else
  56 #   define TICKS_PER_SECOND 100 /* often the correct value */
  57 #  endif
  58 # endif
  59 #endif
  60
  61 /* Prefer times to getrusage to clock (each gives successively less
  62    information).  */
  63 #ifdef HAVE_TIMES
  64 # if defined HAVE_DECL_TIMES && !HAVE_DECL_TIMES
  65   extern clock_t times (struct tms *);
  66 # endif
  67 # define USE_TIMES
  68 # define HAVE_USER_TIME
  69 # define HAVE_SYS_TIME
  70 # define HAVE_WALL_TIME
  71 #else
  72 #ifdef HAVE_GETRUSAGE
  73 # if defined HAVE_DECL_GETRUSAGE && !HAVE_DECL_GETRUSAGE
  74   extern int getrusage (int, struct rusage *);
  75 # endif
  76 # define USE_GETRUSAGE
  77 # define HAVE_USER_TIME
  78 # define HAVE_SYS_TIME
  79 #else
  80 #ifdef HAVE_CLOCK
  81 # if defined HAVE_DECL_CLOCK && !HAVE_DECL_CLOCK
  82   extern clock_t clock (void);
  83 # endif
  84 # define USE_CLOCK
  85 # define HAVE_USER_TIME
  86 #endif
  87 #endif
  88 #endif
  89
  90 /* libc is very likely to have snuck a call to sysconf() into one of
  91    the underlying constants, and that can be very slow, so we have to
  92    precompute them.  Whose wonderful idea was it to make all those
  93    _constants_ variable at run time, anyway?  */
  94 #ifdef USE_TIMES
  95 static double ticks_to_msec;
  96 #define TICKS_TO_MSEC (1 / (double)TICKS_PER_SECOND)
  97 #endif
  98
  99 #ifdef USE_CLOCK
 100 static double clocks_to_msec;
 101 #define CLOCKS_TO_MSEC (1 / (double)CLOCKS_PER_SEC)
 102 #endif
 103
 104 /* Non-NULL if timevars should be used.  In GCC, this happens with
 105    the -ftime-report flag.  */
 106
 107 timer *g_timer;
 108
 109 /* Total amount of memory allocated by garbage collector.  */
 110
 111 size_t timevar_ggc_mem_total;
 112
 113 /* The amount of memory that will cause us to report the timevar even
 114    if the time spent is not significant.  */
 115
 116 #define GGC_MEM_BOUND (1 << 20)
 117
 118 /* See timevar.h for an explanation of timing variables.  */
 119
 120 static void get_time (struct timevar_time_def *);
 121 static void timevar_accumulate (struct timevar_time_def *,
 122                                 struct timevar_time_def *,
 123                                 struct timevar_time_def *);
 124
 125 /* The implementation of timing events for jit client code, allowing
 126    arbitrary named items to appear on the timing stack.  */
 127
 128 class timer::named_items
 129 {
 130  public:
 131   named_items (timer *t);
 132   ~named_items ();
 133
 134   void push (const char *item_name);
 135   void pop ();
 136   void print (FILE *fp, const timevar_time_def *total);
 137
 138  private:
 139   /* Which timer instance does this relate to?  */
 140   timer *m_timer;
 141
 142   /* Dictionary, mapping from item names to timevar_def.
 143      Note that currently we merely store/compare the raw string
 144      pointers provided by client code; we don't take a copy,
 145      or use strcmp.  */
 146   hash_map <const char *, timer::timevar_def> m_hash_map;
 147
 148   /* The order in which items were originally inserted.  */
 149   auto_vec <const char *> m_names;
 150 };
 151
 152 /* The constructor for class timer::named_items.  */
 153
 154 timer::named_items::named_items (timer *t)
 155 : m_timer (t),
 156   m_hash_map (),
 157   m_names ()
 158 {
 159 }
 160
 161 /* The destructor for class timer::named_items.  */
 162
 163 timer::named_items::~named_items ()
 164 {
 165 }
 166
 167 /* Push the named item onto the timer stack.  */
 168
 169 void
 170 timer::named_items::push (const char *item_name)
 171 {
 172   gcc_assert (item_name);
 173
 174   bool existed;
 175   timer::timevar_def *def = &m_hash_map.get_or_insert (item_name, &existed);
 176   if (!existed)
 177     {
 178       def->elapsed.user = 0;
 179       def->elapsed.sys = 0;
 180       def->elapsed.wall = 0;
 181       def->name = item_name;
 182       def->standalone = 0;
 183       m_names.safe_push (item_name);
 184     }
 185   m_timer->push_internal (def);
 186 }
 187
 188 /* Pop the top item from the timer stack.  */
 189
 190 void
 191 timer::named_items::pop ()
 192 {
 193   m_timer->pop_internal ();
 194 }
 195
 196 /* Print the given client item.  Helper function for timer::print.  */
 197
 198 void
 199 timer::named_items::print (FILE *fp, const timevar_time_def *total)
 200 {
 201   unsigned int i;
 202   const char *item_name;
 203   fprintf (fp, "Client items:\n");
 204   FOR_EACH_VEC_ELT (m_names, i, item_name)
 205     {
 206       timer::timevar_def *def = m_hash_map.get (item_name);
 207       gcc_assert (def);
 208       m_timer->print_row (fp, total, def);
 209     }
 210 }
 211
 212 /* Fill the current times into TIME.  The definition of this function
 213    also defines any or all of the HAVE_USER_TIME, HAVE_SYS_TIME, and
 214    HAVE_WALL_TIME macros.  */
 215
 216 static void
 217 get_time (struct timevar_time_def *now)
 218 {
 219   now->user = 0;
 220   now->sys  = 0;
 221   now->wall = 0;
 222   now->ggc_mem = timevar_ggc_mem_total;
 223
 224   {
 225 #ifdef USE_TIMES
 226     struct tms tms;
 227     now->wall = times (&tms)  * ticks_to_msec;
 228     now->user = tms.tms_utime * ticks_to_msec;
 229     now->sys  = tms.tms_stime * ticks_to_msec;
 230 #endif
 231 #ifdef USE_GETRUSAGE
 232     struct rusage rusage;
 233     getrusage (RUSAGE_SELF, &rusage);
 234     now->user = rusage.ru_utime.tv_sec + rusage.ru_utime.tv_usec * 1e-6;
 235     now->sys  = rusage.ru_stime.tv_sec + rusage.ru_stime.tv_usec * 1e-6;
 236 #endif
 237 #ifdef USE_CLOCK
 238     now->user = clock () * clocks_to_msec;
 239 #endif
 240   }
 241 }
 242
 243 /* Add the difference between STOP_TIME and START_TIME to TIMER.  */
 244
 245 static void
 246 timevar_accumulate (struct timevar_time_def *timer,
 247                     struct timevar_time_def *start_time,
 248                     struct timevar_time_def *stop_time)
 249 {
 250   timer->user += stop_time->user - start_time->user;
 251   timer->sys += stop_time->sys - start_time->sys;
 252   timer->wall += stop_time->wall - start_time->wall;
 253   timer->ggc_mem += stop_time->ggc_mem - start_time->ggc_mem;
 254 }
 255
 256 /* Class timer's constructor.  */
 257
 258 timer::timer () :
 259   m_stack (NULL),
 260   m_unused_stack_instances (NULL),
 261   m_start_time (),
 262   m_jit_client_items (NULL)
 263 {
 264   /* Zero all elapsed times.  */
 265   memset (m_timevars, 0, sizeof (m_timevars));
 266
 267   /* Initialize the names of timing variables.  */
 268 #define DEFTIMEVAR(identifier__, name__) \
 269   m_timevars[identifier__].name = name__;
 270 #include "timevar.def"
 271 #undef DEFTIMEVAR
 272
 273   /* Initialize configuration-specific state.
 274      Ideally this would be one-time initialization.  */
 275 #ifdef USE_TIMES
 276   ticks_to_msec = TICKS_TO_MSEC;
 277 #endif
 278 #ifdef USE_CLOCK
 279   clocks_to_msec = CLOCKS_TO_MSEC;
 280 #endif
 281 }
 282
 283 /* Class timer's destructor.  */
 284
 285 timer::~timer ()
 286 {
 287   timevar_stack_def *iter, *next;
 288
 289   for (iter = m_stack; iter; iter = next)
 290     {
 291       next = iter->next;
 292       free (iter);
 293     }
 294   for (iter = m_unused_stack_instances; iter; iter = next)
 295     {
 296       next = iter->next;
 297       free (iter);
 298     }
 299
 300   delete m_jit_client_items;
 301 }
 302
 303 /* Initialize timing variables.  */
 304
 305 void
 306 timevar_init (void)
 307 {
 308   if (g_timer)
 309     return;
 310
 311   g_timer = new timer ();
 312 }
 313
 314 /* Push TIMEVAR onto the timing stack.  No further elapsed time is
 315    attributed to the previous topmost timing variable on the stack;
 316    subsequent elapsed time is attributed to TIMEVAR, until it is
 317    popped or another element is pushed on top.
 318
 319    TIMEVAR cannot be running as a standalone timer.  */
 320
 321 void
 322 timer::push (timevar_id_t timevar)
 323 {
 324   struct timevar_def *tv = &m_timevars[timevar];
 325   push_internal (tv);
 326 }
 327
 328 /* Push TV onto the timing stack, either one of the builtin ones
 329    for a timevar_id_t, or one provided by client code to libgccjit.  */
 330
 331 void
 332 timer::push_internal (struct timevar_def *tv)
 333 {
 334   struct timevar_stack_def *context;
 335   struct timevar_time_def now;
 336
 337   gcc_assert (tv);
 338
 339   /* Mark this timing variable as used.  */
 340   tv->used = 1;
 341
 342   /* Can't push a standalone timer.  */
 343   gcc_assert (!tv->standalone);
 344
 345   /* What time is it?  */
 346   get_time (&now);
 347
 348   /* If the stack isn't empty, attribute the current elapsed time to
 349      the old topmost element.  */
 350   if (m_stack)
 351     timevar_accumulate (&m_stack->timevar->elapsed, &m_start_time, &now);
 352
 353   /* Reset the start time; from now on, time is attributed to
 354      TIMEVAR.  */
 355   m_start_time = now;
 356
 357   /* See if we have a previously-allocated stack instance.  If so,
 358      take it off the list.  If not, malloc a new one.  */
 359   if (m_unused_stack_instances != NULL)
 360     {
 361       context = m_unused_stack_instances;
 362       m_unused_stack_instances = m_unused_stack_instances->next;
 363     }
 364   else
 365     context = XNEW (struct timevar_stack_def);
 366
 367   /* Fill it in and put it on the stack.  */
 368   context->timevar = tv;
 369   context->next = m_stack;
 370   m_stack = context;
 371 }
 372
 373 /* Pop the topmost timing variable element off the timing stack.  The
 374    popped variable must be TIMEVAR.  Elapsed time since the that
 375    element was pushed on, or since it was last exposed on top of the
 376    stack when the element above it was popped off, is credited to that
 377    timing variable.  */
 378
 379 void
 380 timer::pop (timevar_id_t timevar)
 381 {
 382   gcc_assert (&m_timevars[timevar] == m_stack->timevar);
 383
 384   pop_internal ();
 385 }
 386
 387 /* Pop the topmost item from the stack, either one of the builtin ones
 388    for a timevar_id_t, or one provided by client code to libgccjit.  */
 389
 390 void
 391 timer::pop_internal ()
 392 {
 393   struct timevar_time_def now;
 394   struct timevar_stack_def *popped = m_stack;
 395
 396   /* What time is it?  */
 397   get_time (&now);
 398
 399   /* Attribute the elapsed time to the element we're popping.  */
 400   timevar_accumulate (&popped->timevar->elapsed, &m_start_time, &now);
 401
 402   /* Reset the start time; from now on, time is attributed to the
 403      element just exposed on the stack.  */
 404   m_start_time = now;
 405
 406   /* Take the item off the stack.  */
 407   m_stack = m_stack->next;
 408
 409   /* Don't delete the stack element; instead, add it to the list of
 410      unused elements for later use.  */
 411   popped->next = m_unused_stack_instances;
 412   m_unused_stack_instances = popped;
 413 }
 414
 415 /* Start timing TIMEVAR independently of the timing stack.  Elapsed
 416    time until timevar_stop is called for the same timing variable is
 417    attributed to TIMEVAR.  */
 418
 419 void
 420 timevar_start (timevar_id_t timevar)
 421 {
 422   if (!g_timer)
 423     return;
 424
 425   g_timer->start (timevar);
 426 }
 427
 428 /* See timevar_start above.  */
 429
 430 void
 431 timer::start (timevar_id_t timevar)
 432 {
 433   struct timevar_def *tv = &m_timevars[timevar];
 434
 435   /* Mark this timing variable as used.  */
 436   tv->used = 1;
 437
 438   /* Don't allow the same timing variable to be started more than
 439      once.  */
 440   gcc_assert (!tv->standalone);
 441   tv->standalone = 1;
 442
 443   get_time (&tv->start_time);
 444 }
 445
 446 /* Stop timing TIMEVAR.  Time elapsed since timevar_start was called
 447    is attributed to it.  */
 448
 449 void
 450 timevar_stop (timevar_id_t timevar)
 451 {
 452   if (!g_timer)
 453     return;
 454
 455   g_timer->stop (timevar);
 456 }
 457
 458 /* See timevar_stop above.  */
 459
 460 void
 461 timer::stop (timevar_id_t timevar)
 462 {
 463   struct timevar_def *tv = &m_timevars[timevar];
 464   struct timevar_time_def now;
 465
 466   /* TIMEVAR must have been started via timevar_start.  */
 467   gcc_assert (tv->standalone);
 468   tv->standalone = 0; /* Enable a restart.  */
 469
 470   get_time (&now);
 471   timevar_accumulate (&tv->elapsed, &tv->start_time, &now);
 472 }
 473
 474
 475 /* Conditionally start timing TIMEVAR independently of the timing stack.
 476    If the timer is already running, leave it running and return true.
 477    Otherwise, start the timer and return false.
 478    Elapsed time until the corresponding timevar_cond_stop
 479    is called for the same timing variable is attributed to TIMEVAR.  */
 480
 481 bool
 482 timevar_cond_start (timevar_id_t timevar)
 483 {
 484   if (!g_timer)
 485     return false;
 486
 487   return g_timer->cond_start (timevar);
 488 }
 489
 490 /* See timevar_cond_start above.  */
 491
 492 bool
 493 timer::cond_start (timevar_id_t timevar)
 494 {
 495   struct timevar_def *tv = &m_timevars[timevar];
 496
 497   /* Mark this timing variable as used.  */
 498   tv->used = 1;
 499
 500   if (tv->standalone)
 501     return true;  /* The timevar is already running.  */
 502
 503   /* Don't allow the same timing variable
 504      to be unconditionally started more than once.  */
 505   tv->standalone = 1;
 506
 507   get_time (&tv->start_time);
 508   return false;  /* The timevar was not already running.  */
 509 }
 510
 511 /* Conditionally stop timing TIMEVAR.  The RUNNING parameter must come
 512    from the return value of a dynamically matching timevar_cond_start.
 513    If the timer had already been RUNNING, do nothing.  Otherwise, time
 514    elapsed since timevar_cond_start was called is attributed to it.  */
 515
 516 void
 517 timevar_cond_stop (timevar_id_t timevar, bool running)
 518 {
 519   if (!g_timer || running)
 520     return;
 521
 522   g_timer->cond_stop (timevar);
 523 }
 524
 525 /* See timevar_cond_stop above.  */
 526
 527 void
 528 timer::cond_stop (timevar_id_t timevar)
 529 {
 530   struct timevar_def *tv;
 531   struct timevar_time_def now;
 532
 533   tv = &m_timevars[timevar];
 534
 535   /* TIMEVAR must have been started via timevar_cond_start.  */
 536   gcc_assert (tv->standalone);
 537   tv->standalone = 0; /* Enable a restart.  */
 538
 539   get_time (&now);
 540   timevar_accumulate (&tv->elapsed, &tv->start_time, &now);
 541 }
 542
 543 /* Push the named item onto the timing stack.  */
 544
 545 void
 546 timer::push_client_item (const char *item_name)
 547 {
 548   gcc_assert (item_name);
 549
 550   /* Lazily create the named_items instance.  */
 551   if (!m_jit_client_items)
 552     m_jit_client_items = new named_items (this);
 553
 554   m_jit_client_items->push (item_name);
 555 }
 556
 557 /* Pop the top-most client item from the timing stack.  */
 558
 559 void
 560 timer::pop_client_item ()
 561 {
 562   gcc_assert (m_jit_client_items);
 563   m_jit_client_items->pop ();
 564 }
 565
 566 /* Validate that phase times are consistent.  */
 567
 568 void
 569 timer::validate_phases (FILE *fp) const
 570 {
 571   unsigned int /* timevar_id_t */ id;
 572   const timevar_time_def *total = &m_timevars[TV_TOTAL].elapsed;
 573   double phase_user = 0.0;
 574   double phase_sys = 0.0;
 575   double phase_wall = 0.0;
 576   size_t phase_ggc_mem = 0;
 577   static char phase_prefix[] = "phase ";
 578   const double tolerance = 1.000001;  /* One part in a million.  */
 579
 580   for (id = 0; id < (unsigned int) TIMEVAR_LAST; ++id)
 581     {
 582       const timevar_def *tv = &m_timevars[(timevar_id_t) id];
 583
 584       /* Don't evaluate timing variables that were never used.  */
 585       if (!tv->used)
 586         continue;
 587
 588       if (strncmp (tv->name, phase_prefix, sizeof phase_prefix - 1) == 0)
 589         {
 590           phase_user += tv->elapsed.user;
 591           phase_sys += tv->elapsed.sys;
 592           phase_wall += tv->elapsed.wall;
 593           phase_ggc_mem += tv->elapsed.ggc_mem;
 594         }
 595     }
 596
 597   if (phase_user > total->user * tolerance
 598       || phase_sys > total->sys * tolerance
 599       || phase_wall > total->wall * tolerance
 600       || phase_ggc_mem > total->ggc_mem * tolerance)
 601     {
 602
 603       fprintf (fp, "Timing error: total of phase timers exceeds total time.\n");
 604       if (phase_user > total->user)
 605         fprintf (fp, "user    %24.18e > %24.18e\n", phase_user, total->user);
 606       if (phase_sys > total->sys)
 607         fprintf (fp, "sys     %24.18e > %24.18e\n", phase_sys, total->sys);
 608       if (phase_wall > total->wall)
 609         fprintf (fp, "wall    %24.18e > %24.18e\n", phase_wall, total->wall);
 610       if (phase_ggc_mem > total->ggc_mem)
 611         fprintf (fp, "ggc_mem %24lu > %24lu\n", (unsigned long)phase_ggc_mem,
 612                  (unsigned long)total->ggc_mem);
 613       gcc_unreachable ();
 614     }
 615 }
 616
 617 /* Helper function for timer::print.  */
 618
 619 void
 620 timer::print_row (FILE *fp,
 621                   const timevar_time_def *total,
 622                   const timevar_def *tv)
 623 {
 624   /* The timing variable name.  */
 625   fprintf (fp, " %-24s:", tv->name);
 626
 627 #ifdef HAVE_USER_TIME
 628   /* Print user-mode time for this process.  */
 629   fprintf (fp, "%7.2f (%2.0f%%) usr",
 630            tv->elapsed.user,
 631            (total->user == 0 ? 0 : tv->elapsed.user / total->user) * 100);
 632 #endif /* HAVE_USER_TIME */
 633
 634 #ifdef HAVE_SYS_TIME
 635   /* Print system-mode time for this process.  */
 636   fprintf (fp, "%7.2f (%2.0f%%) sys",
 637            tv->elapsed.sys,
 638            (total->sys == 0 ? 0 : tv->elapsed.sys / total->sys) * 100);
 639 #endif /* HAVE_SYS_TIME */
 640
 641 #ifdef HAVE_WALL_TIME
 642   /* Print wall clock time elapsed.  */
 643   fprintf (fp, "%7.2f (%2.0f%%) wall",
 644            tv->elapsed.wall,
 645            (total->wall == 0 ? 0 : tv->elapsed.wall / total->wall) * 100);
 646 #endif /* HAVE_WALL_TIME */
 647
 648   /* Print the amount of ggc memory allocated.  */
 649   fprintf (fp, "%8u kB (%2.0f%%) ggc",
 650            (unsigned) (tv->elapsed.ggc_mem >> 10),
 651            (total->ggc_mem == 0
 652             ? 0
 653             : (float) tv->elapsed.ggc_mem / total->ggc_mem) * 100);
 654
 655   putc ('\n', fp);
 656 }
 657
 658 /* Summarize timing variables to FP.  The timing variable TV_TOTAL has
 659    a special meaning -- it's considered to be the total elapsed time,
 660    for normalizing the others, and is displayed last.  */
 661
 662 void
 663 timer::print (FILE *fp)
 664 {
 665   /* Only print stuff if we have some sort of time information.  */
 666 #if defined (HAVE_USER_TIME) || defined (HAVE_SYS_TIME) || defined (HAVE_WALL_TIME)
 667   unsigned int /* timevar_id_t */ id;
 668   const timevar_time_def *total = &m_timevars[TV_TOTAL].elapsed;
 669   struct timevar_time_def now;
 670
 671   /* Update timing information in case we're calling this from GDB.  */
 672
 673   if (fp == 0)
 674     fp = stderr;
 675
 676   /* What time is it?  */
 677   get_time (&now);
 678
 679   /* If the stack isn't empty, attribute the current elapsed time to
 680      the old topmost element.  */
 681   if (m_stack)
 682     timevar_accumulate (&m_stack->timevar->elapsed, &m_start_time, &now);
 683
 684   /* Reset the start time; from now on, time is attributed to
 685      TIMEVAR.  */
 686   m_start_time = now;
 687
 688   fputs ("\nExecution times (seconds)\n", fp);
 689   if (m_jit_client_items)
 690     fputs ("GCC items:\n", fp);
 691   for (id = 0; id < (unsigned int) TIMEVAR_LAST; ++id)
 692     {
 693       const timevar_def *tv = &m_timevars[(timevar_id_t) id];
 694       const double tiny = 5e-3;
 695
 696       /* Don't print the total execution time here; that goes at the
 697          end.  */
 698       if ((timevar_id_t) id == TV_TOTAL)
 699         continue;
 700
 701       /* Don't print timing variables that were never used.  */
 702       if (!tv->used)
 703         continue;
 704
 705       /* Don't print timing variables if we're going to get a row of
 706          zeroes.  */
 707       if (tv->elapsed.user < tiny
 708           && tv->elapsed.sys < tiny
 709           && tv->elapsed.wall < tiny
 710           && tv->elapsed.ggc_mem < GGC_MEM_BOUND)
 711         continue;
 712
 713       print_row (fp, total, tv);
 714     }
 715   if (m_jit_client_items)
 716     m_jit_client_items->print (fp, total);
 717
 718   /* Print total time.  */
 719   fputs (" TOTAL                 :", fp);
 720 #ifdef HAVE_USER_TIME
 721   fprintf (fp, "%7.2f          ", total->user);
 722 #endif
 723 #ifdef HAVE_SYS_TIME
 724   fprintf (fp, "%7.2f          ", total->sys);
 725 #endif
 726 #ifdef HAVE_WALL_TIME
 727   fprintf (fp, "%7.2f           ", total->wall);
 728 #endif
 729   fprintf (fp, "%8u kB\n", (unsigned) (total->ggc_mem >> 10));
 730
 731   if (CHECKING_P || flag_checking)
 732     fprintf (fp, "Extra diagnostic checks enabled; compiler may run slowly.\n");
 733   if (CHECKING_P)
 734     fprintf (fp, "Configure with --enable-checking=release to disable checks.\n");
 735 #ifndef ENABLE_ASSERT_CHECKING
 736   fprintf (fp, "Internal checks disabled; compiler is not suited for release.\n");
 737   fprintf (fp, "Configure with --enable-checking=release to enable checks.\n");
 738 #endif
 739
 740 #endif /* defined (HAVE_USER_TIME) || defined (HAVE_SYS_TIME)
 741           || defined (HAVE_WALL_TIME) */
 742
 743   validate_phases (fp);
 744 }
 745
 746 /* Get the name of the topmost item.  For use by jit for validating
 747    inputs to gcc_jit_timer_pop.  */
 748 const char *
 749 timer::get_topmost_item_name () const
 750 {
 751   if (m_stack)
 752     return m_stack->timevar->name;
 753   else
 754     return NULL;
 755 }
 756
 757 /* Prints a message to stderr stating that time elapsed in STR is
 758    TOTAL (given in microseconds).  */
 759
 760 void
 761 print_time (const char *str, long total)
 762 {
 763   long all_time = get_run_time ();
 764   fprintf (stderr,
 765            "time in %s: %ld.%06ld (%ld%%)\n",
 766            str, total / 1000000, total % 1000000,
 767            all_time == 0 ? 0
 768            : (long) (((100.0 * (double) total) / (double) all_time) + .5));
 769 }