gcc/jit/jit-builtins.c

   1 /* jit-builtins.c -- Handling of builtin functions during JIT-compilation.
   2    Copyright (C) 2014-2018 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 it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 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 "target.h"
  24 #include "jit-playback.h"
  25 #include "stringpool.h"
  26
  27 #include "jit-builtins.h"
  28
  29 namespace gcc {
  30
  31 namespace jit {
  32
  33 const char *const prefix = "__builtin_";
  34 const size_t prefix_len = strlen (prefix);
  35
  36 /* Create "builtin_data", a const table of the data within builtins.def.  */
  37 struct builtin_data
  38 {
  39   const char *name;
  40   enum built_in_class fnclass;
  41   enum jit_builtin_type type;
  42   bool both_p;
  43   bool fallback_p;
  44   enum built_in_attribute attr;
  45   bool implicit_p;
  46
  47   const char *get_asm_name () const
  48   {
  49     if (both_p && fallback_p)
  50       return name + prefix_len;
  51     else
  52       return name;
  53   }
  54 };
  55
  56 #define DEF_BUILTIN(X, NAME, CLASS, TYPE, LT, BOTH_P, FALLBACK_P, \
  57                     NONANSI_P, ATTRS, IMPLICIT, COND)             \
  58   {NAME, CLASS, TYPE, BOTH_P, FALLBACK_P, ATTRS, IMPLICIT},
  59 static const struct builtin_data builtin_data[] =
  60 {
  61 #include "builtins.def"
  62 };
  63
  64 /* Helper function for find_builtin_by_name.  */
  65
  66 static bool
  67 matches_builtin (const char *in_name,
  68                  const struct builtin_data& bd)
  69 {
  70   const bool debug = 0;
  71
  72   /* Ignore entries with a NULL name.  */
  73   if (!bd.name)
  74     return false;
  75
  76   if (debug)
  77     fprintf (stderr, "seen builtin: %s\n", bd.name);
  78
  79   if (strcmp (bd.name, in_name) == 0)
  80     return true;
  81
  82   if (bd.both_p)
  83     {
  84       /* Then the macros in builtins.def gave a "__builtin_"
  85          prefix to bd.name, but we should also recognize the form
  86          without the prefix.  */
  87       gcc_assert (strncmp (bd.name, prefix, prefix_len) == 0);
  88       if (debug)
  89         fprintf (stderr, "testing without prefix as: %s\n",
  90                  bd.name + prefix_len);
  91       if (strcmp (bd.name + prefix_len, in_name) == 0)
  92         return true;
  93     }
  94
  95   return false;
  96 }
  97
  98 /* Locate the built-in function that matches name IN_NAME,
  99    writing the result to OUT_ID and returning true if found,
 100    or returning false if not found.  */
 101
 102 static bool
 103 find_builtin_by_name (const char *in_name,
 104                       enum built_in_function *out_id)
 105 {
 106   /* Locate builtin.  This currently works by performing repeated
 107      strcmp against every possible candidate, which is likely to
 108      inefficient.
 109
 110      We start at index 1 to skip the initial entry (BUILT_IN_NONE), which
 111      has a NULL name.  */
 112   for (unsigned int i = 1;
 113        i < sizeof (builtin_data) / sizeof (builtin_data[0]);
 114        i++)
 115     {
 116       const struct builtin_data& bd = builtin_data[i];
 117       if (matches_builtin (in_name, bd))
 118         {
 119           /* Found a match.  */
 120           *out_id = static_cast<enum built_in_function> (i);
 121           return true;
 122         }
 123     }
 124
 125   /* Not found.  */
 126   return false;
 127 }
 128
 129 // class builtins_manager
 130
 131 /* Constructor for gcc::jit::builtins_manager.  */
 132
 133 builtins_manager::builtins_manager (recording::context *ctxt)
 134   : m_ctxt (ctxt)
 135 {
 136   memset (m_types, 0, sizeof (m_types));
 137   memset (m_builtin_functions, 0, sizeof (m_builtin_functions));
 138   memset (m_attributes, 0, sizeof (m_attributes));
 139 }
 140
 141 /* Locate a builtin function by name.
 142    Create a recording::function of the appropriate type, reusing them
 143    if they've already been seen.  */
 144
 145 recording::function *
 146 builtins_manager::get_builtin_function (const char *name)
 147 {
 148   enum built_in_function builtin_id;
 149   if (!find_builtin_by_name (name, &builtin_id))
 150     {
 151       m_ctxt->add_error (NULL, "builtin \"%s\" not found", name);
 152       return NULL;
 153     }
 154
 155   return get_builtin_function_by_id (builtin_id);
 156 }
 157
 158 /* Locate a builtin function by id.
 159    Create a recording::function of the appropriate type, reusing them
 160    if they've already been seen.  */
 161
 162 recording::function *
 163 builtins_manager::get_builtin_function_by_id (enum built_in_function builtin_id)
 164 {
 165   gcc_assert (builtin_id >= 0);
 166   gcc_assert (builtin_id < END_BUILTINS);
 167
 168   /* Lazily build the functions, caching them so that repeated calls for
 169      the same id on a context give back the same object.  */
 170   if (!m_builtin_functions[builtin_id])
 171     {
 172       recording::function *fn = make_builtin_function (builtin_id);
 173       if (fn)
 174         {
 175           m_builtin_functions[builtin_id] = fn;
 176           m_ctxt->record (fn);
 177         }
 178     }
 179
 180   return m_builtin_functions[builtin_id];
 181 }
 182
 183 /* Create the recording::function for a given builtin function, by ID.  */
 184
 185 recording::function *
 186 builtins_manager::make_builtin_function (enum built_in_function builtin_id)
 187 {
 188   const struct builtin_data& bd = builtin_data[builtin_id];
 189   enum jit_builtin_type type_id = bd.type;
 190   recording::type *t = get_type (type_id);
 191   if (!t)
 192     return NULL;
 193   recording::function_type *func_type = t->as_a_function_type ();
 194   if (!func_type)
 195     return NULL;
 196
 197   vec<recording::type *> param_types = func_type->get_param_types ();
 198   recording::param **params = new recording::param *[param_types.length ()];
 199
 200   int i;
 201   recording::type *param_type;
 202   FOR_EACH_VEC_ELT (param_types, i, param_type)
 203     {
 204       char buf[16];
 205       snprintf (buf, 16, "arg%d", i);
 206       params[i] = m_ctxt->new_param (NULL,
 207                                      param_type,
 208                                      buf);
 209     }
 210   const char *asm_name = bd.get_asm_name ();
 211   recording::function *result =
 212     new recording::function (m_ctxt,
 213                              NULL,
 214                              GCC_JIT_FUNCTION_IMPORTED, // FIXME
 215                              func_type->get_return_type (),
 216                              m_ctxt->new_string (asm_name),
 217                              param_types.length (),
 218                              params,
 219                              func_type->is_variadic (),
 220                              builtin_id);
 221   delete[] params;
 222
 223   /* PR/64020 - If the client code is using builtin cos or sin,
 224      tree-ssa-math-opt.c's execute_cse_sincos_1 may attempt
 225      to optimize them to use __builtin_cexpi; for this,
 226      BUILT_IN_CEXPI needs to exist.
 227
 228      Hence query the cache for BUILT_IN_CEXPI to ensure it gets
 229      built.  */
 230   if (builtin_id == BUILT_IN_COS || builtin_id == BUILT_IN_SIN)
 231     (void)get_builtin_function_by_id (BUILT_IN_CEXPI);
 232
 233   /* builtins.c:expand_builtin_cexpi can optimize the various
 234      CEXP builtins to SINCOS builtins, and hence we may require
 235      SINCOS builtins latter.
 236
 237      Ensure the appropriate SINCOS builtin exists.  */
 238   if (builtin_id == BUILT_IN_CEXPIF)
 239     (void)get_builtin_function_by_id (BUILT_IN_SINCOSF);
 240   else if (builtin_id == BUILT_IN_CEXPI)
 241     (void)get_builtin_function_by_id (BUILT_IN_SINCOS);
 242   else if (builtin_id == BUILT_IN_CEXPIL)
 243     (void)get_builtin_function_by_id (BUILT_IN_SINCOSL);
 244
 245   return result;
 246 }
 247
 248 /* Get the recording::type for a given type of builtin function,
 249    by ID, creating it if it doesn't already exist.  */
 250
 251 recording::type *
 252 builtins_manager::get_type (enum jit_builtin_type type_id)
 253 {
 254   if (!m_types[type_id])
 255     m_types[type_id] = make_type (type_id);
 256   return m_types[type_id];
 257 }
 258
 259 /* Create the recording::type for a given type of builtin function.  */
 260
 261 recording::type *
 262 builtins_manager::make_type (enum jit_builtin_type type_id)
 263 {
 264   /* Use builtin-types.def to construct a switch statement, with each
 265      case deferring to one of the methods below:
 266        - DEF_PRIMITIVE_TYPE is handled as a call to make_primitive_type.
 267        - the various DEF_FUNCTION_TYPE_n are handled by variadic calls
 268          to make_fn_type.
 269        - similarly for DEF_FUNCTION_TYPE_VAR_n, but setting the
 270         "is_variadic" argument.
 271        - DEF_POINTER_TYPE is handled by make_ptr_type.
 272      That should handle everything, but just in case we also suppy a
 273      gcc_unreachable default clause.  */
 274   switch (type_id)
 275     {
 276 #define DEF_PRIMITIVE_TYPE(ENUM, VALUE) \
 277       case ENUM: return make_primitive_type (ENUM);
 278 #define DEF_FUNCTION_TYPE_0(ENUM, RETURN) \
 279       case ENUM: return make_fn_type (ENUM, RETURN, 0, 0);
 280 #define DEF_FUNCTION_TYPE_1(ENUM, RETURN, ARG1) \
 281       case ENUM: return make_fn_type (ENUM, RETURN, 0, 1, ARG1);
 282 #define DEF_FUNCTION_TYPE_2(ENUM, RETURN, ARG1, ARG2) \
 283       case ENUM: return make_fn_type (ENUM, RETURN, 0, 2, ARG1, ARG2);
 284 #define DEF_FUNCTION_TYPE_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
 285       case ENUM: return make_fn_type (ENUM, RETURN, 0, 3, ARG1, ARG2, ARG3);
 286 #define DEF_FUNCTION_TYPE_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
 287       case ENUM: return make_fn_type (ENUM, RETURN, 0, 4, ARG1, ARG2, ARG3, \
 288                                       ARG4);
 289 #define DEF_FUNCTION_TYPE_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \
 290       case ENUM: return make_fn_type (ENUM, RETURN, 0, 5, ARG1, ARG2, ARG3, \
 291                                       ARG4, ARG5);
 292 #define DEF_FUNCTION_TYPE_6(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
 293                             ARG6)                                       \
 294       case ENUM: return make_fn_type (ENUM, RETURN, 0, 6, ARG1, ARG2, ARG3, \
 295                                       ARG4, ARG5, ARG6);
 296 #define DEF_FUNCTION_TYPE_7(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
 297                             ARG6, ARG7)                                 \
 298       case ENUM: return make_fn_type (ENUM, RETURN, 0, 7, ARG1, ARG2, ARG3, \
 299                                       ARG4, ARG5, ARG6, ARG7);
 300 #define DEF_FUNCTION_TYPE_8(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
 301                             ARG6, ARG7, ARG8)                           \
 302       case ENUM: return make_fn_type (ENUM, RETURN, 0, 8, ARG1, ARG2, ARG3, \
 303                                       ARG4, ARG5, ARG6, ARG7, ARG8);
 304 #define DEF_FUNCTION_TYPE_9(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
 305                             ARG6, ARG7, ARG8, ARG9)                     \
 306       case ENUM: return make_fn_type (ENUM, RETURN, 0, 9, ARG1, ARG2, ARG3, \
 307                                       ARG4, ARG5, ARG6, ARG7, ARG8, ARG9);
 308 #define DEF_FUNCTION_TYPE_10(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
 309                              ARG6, ARG7, ARG8, ARG9, ARG10)              \
 310       case ENUM: return make_fn_type (ENUM, RETURN, 0, 10, ARG1, ARG2, ARG3, \
 311                                       ARG4, ARG5, ARG6, ARG7, ARG8, ARG9, \
 312                                       ARG10);
 313 #define DEF_FUNCTION_TYPE_11(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
 314                              ARG6, ARG7, ARG8, ARG9, ARG10, ARG11)       \
 315       case ENUM: return make_fn_type (ENUM, RETURN, 0, 11, ARG1, ARG2, ARG3, \
 316                                       ARG4, ARG5, ARG6, ARG7, ARG8, ARG9, \
 317                                       ARG10, ARG11);
 318 #define DEF_FUNCTION_TYPE_VAR_0(ENUM, RETURN) \
 319       case ENUM: return make_fn_type (ENUM, RETURN, 1, 0);
 320 #define DEF_FUNCTION_TYPE_VAR_1(ENUM, RETURN, ARG1) \
 321       case ENUM: return make_fn_type (ENUM, RETURN, 1, 1, ARG1);
 322 #define DEF_FUNCTION_TYPE_VAR_2(ENUM, RETURN, ARG1, ARG2) \
 323       case ENUM: return make_fn_type (ENUM, RETURN, 1, 2, ARG1, ARG2);
 324 #define DEF_FUNCTION_TYPE_VAR_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
 325       case ENUM: return make_fn_type (ENUM, RETURN, 1, 3, ARG1, ARG2, ARG3);
 326 #define DEF_FUNCTION_TYPE_VAR_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
 327       case ENUM: return make_fn_type (ENUM, RETURN, 1, 4, ARG1, ARG2, ARG3, \
 328                                       ARG4);
 329 #define DEF_FUNCTION_TYPE_VAR_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \
 330       case ENUM: return make_fn_type (ENUM, RETURN, 1, 5, ARG1, ARG2, ARG3, \
 331                                       ARG4, ARG5);
 332 #define DEF_FUNCTION_TYPE_VAR_6(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
 333                                 ARG6)                                   \
 334       case ENUM: return make_fn_type (ENUM, RETURN, 1, 6, ARG1, ARG2, ARG3, \
 335                                       ARG4, ARG5, ARG6);
 336 #define DEF_FUNCTION_TYPE_VAR_7(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
 337                                 ARG6, ARG7)                             \
 338       case ENUM: return make_fn_type (ENUM, RETURN, 1, 7, ARG1, ARG2, ARG3, \
 339                                       ARG4, ARG5, ARG6, ARG7);
 340 #define DEF_POINTER_TYPE(ENUM, TYPE) \
 341       case ENUM: return make_ptr_type (ENUM, TYPE);
 342
 343 #include "builtin-types.def"
 344
 345 #undef DEF_PRIMITIVE_TYPE
 346 #undef DEF_FUNCTION_TYPE_0
 347 #undef DEF_FUNCTION_TYPE_1
 348 #undef DEF_FUNCTION_TYPE_2
 349 #undef DEF_FUNCTION_TYPE_3
 350 #undef DEF_FUNCTION_TYPE_4
 351 #undef DEF_FUNCTION_TYPE_5
 352 #undef DEF_FUNCTION_TYPE_6
 353 #undef DEF_FUNCTION_TYPE_7
 354 #undef DEF_FUNCTION_TYPE_8
 355 #undef DEF_FUNCTION_TYPE_9
 356 #undef DEF_FUNCTION_TYPE_10
 357 #undef DEF_FUNCTION_TYPE_11
 358 #undef DEF_FUNCTION_TYPE_VAR_0
 359 #undef DEF_FUNCTION_TYPE_VAR_1
 360 #undef DEF_FUNCTION_TYPE_VAR_2
 361 #undef DEF_FUNCTION_TYPE_VAR_3
 362 #undef DEF_FUNCTION_TYPE_VAR_4
 363 #undef DEF_FUNCTION_TYPE_VAR_5
 364 #undef DEF_FUNCTION_TYPE_VAR_6
 365 #undef DEF_FUNCTION_TYPE_VAR_7
 366 #undef DEF_POINTER_TYPE
 367
 368     default:
 369       gcc_unreachable ();
 370     }
 371 }
 372
 373 /* Create the recording::type for a given primitive type within the
 374    builtin system.
 375
 376    Only some types are currently supported.  */
 377
 378 recording::type*
 379 builtins_manager::make_primitive_type (enum jit_builtin_type type_id)
 380 {
 381   switch (type_id)
 382     {
 383     default:
 384       // only some of these types are implemented so far:
 385       m_ctxt->add_error (NULL,
 386                          "unimplemented primitive type for builtin: %d", type_id);
 387       return NULL;
 388
 389     case BT_VOID: return m_ctxt->get_type (GCC_JIT_TYPE_VOID);
 390     case BT_BOOL: return m_ctxt->get_type (GCC_JIT_TYPE_BOOL);
 391     case BT_INT: return m_ctxt->get_type (GCC_JIT_TYPE_INT);
 392     case BT_UINT: return m_ctxt->get_type (GCC_JIT_TYPE_UNSIGNED_INT);
 393     case BT_LONG: return m_ctxt->get_type (GCC_JIT_TYPE_LONG);
 394     case BT_ULONG: return m_ctxt->get_type (GCC_JIT_TYPE_UNSIGNED_LONG);
 395     case BT_LONGLONG: return m_ctxt->get_type (GCC_JIT_TYPE_LONG_LONG);
 396     case BT_ULONGLONG:
 397       return m_ctxt->get_type (GCC_JIT_TYPE_UNSIGNED_LONG_LONG);
 398     // case BT_INT128:
 399     // case BT_UINT128:
 400     // case BT_INTMAX:
 401     // case BT_UINTMAX:
 402     case BT_UINT16: return m_ctxt->get_int_type (2, false);
 403     case BT_UINT32: return m_ctxt->get_int_type (4, false);
 404     case BT_UINT64: return m_ctxt->get_int_type (8, false);
 405     // case BT_WORD:
 406     // case BT_UNWINDWORD:
 407     case BT_FLOAT: return m_ctxt->get_type (GCC_JIT_TYPE_FLOAT);
 408     case BT_DOUBLE: return m_ctxt->get_type (GCC_JIT_TYPE_DOUBLE);
 409     case BT_LONGDOUBLE: return m_ctxt->get_type (GCC_JIT_TYPE_LONG_DOUBLE);
 410     case BT_COMPLEX_FLOAT:
 411       return m_ctxt->get_type (GCC_JIT_TYPE_COMPLEX_FLOAT);
 412     case BT_COMPLEX_DOUBLE:
 413       return m_ctxt->get_type (GCC_JIT_TYPE_COMPLEX_DOUBLE);
 414     case BT_COMPLEX_LONGDOUBLE:
 415       return m_ctxt->get_type (GCC_JIT_TYPE_COMPLEX_LONG_DOUBLE);
 416     case BT_PTR: return m_ctxt->get_type (GCC_JIT_TYPE_VOID_PTR);
 417     case BT_FILEPTR: return m_ctxt->get_type (GCC_JIT_TYPE_FILE_PTR);
 418     // case BT_CONST:
 419     // case BT_VOLATILE_PTR:
 420     // case BT_CONST_VOLATILE_PTR:
 421     // case BT_PTRMODE:
 422     // case BT_INT_PTR:
 423     // case BT_FLOAT_PTR:
 424     case BT_DOUBLE_PTR:
 425       return m_ctxt->get_type (GCC_JIT_TYPE_DOUBLE)->get_pointer ();
 426     // case BT_CONST_DOUBLE_PTR:
 427     // case BT_LONGDOUBLE_PTR:
 428     // case BT_PID:
 429     // case BT_SIZE:
 430     // case BT_SSIZE:
 431     // case BT_WINT:
 432     // case BT_STRING:
 433     case BT_CONST_STRING: return m_ctxt->get_type (GCC_JIT_TYPE_CONST_CHAR_PTR);
 434     // case BT_DFLOAT32:
 435     // case BT_DFLOAT64:
 436     // case BT_DFLOAT128:
 437     // case BT_DFLOAT32_PTR:
 438     // case BT_DFLOAT64_PTR:
 439     // case BT_DFLOAT128_PTR:
 440     // case BT_VALIST_REF:
 441     // case BT_VALIST_ARG:
 442     // case BT_I1:
 443     // case BT_I2:
 444     // case BT_I4:
 445     // case BT_I8:
 446     // case BT_I16:
 447     }
 448 }
 449
 450 /* Create the recording::function_type for a given function type
 451    signature.  */
 452
 453 recording::function_type *
 454 builtins_manager::make_fn_type (enum jit_builtin_type,
 455                                 enum jit_builtin_type return_type_id,
 456                                 bool is_variadic,
 457                                 int num_args, ...)
 458 {
 459   va_list list;
 460   int i;
 461   recording::type **param_types = new recording::type *[num_args];
 462   recording::type *return_type = NULL;
 463   recording::function_type *result = NULL;
 464
 465   va_start (list, num_args);
 466   for (i = 0; i < num_args; ++i)
 467     {
 468       enum jit_builtin_type arg_type_id =
 469         (enum jit_builtin_type) va_arg (list, int);
 470       param_types[i] = get_type (arg_type_id);
 471       if (!param_types[i])
 472         goto error;
 473     }
 474   va_end (list);
 475
 476   return_type = get_type (return_type_id);
 477   if (!return_type)
 478     goto error;
 479
 480   result = m_ctxt->new_function_type (return_type,
 481                                       num_args,
 482                                       param_types,
 483                                       is_variadic);
 484
 485  error:
 486   delete[] param_types;
 487   return result;
 488 }
 489
 490 /* Handler for DEF_POINTER_TYPE within builtins_manager::make_type.  */
 491
 492 recording::type *
 493 builtins_manager::make_ptr_type (enum jit_builtin_type,
 494                                  enum jit_builtin_type other_type_id)
 495 {
 496   recording::type *base_type = get_type (other_type_id);
 497   return base_type->get_pointer ();
 498 }
 499
 500 /* Playback support.  */
 501
 502 /* A builtins_manager is associated with a recording::context
 503    and might be reused for multiple compiles on various
 504    playback::contexts, perhaps with different options.
 505
 506    Purge any playback state.  Currently this is just the table of
 507    attributes.  */
 508
 509 void
 510 builtins_manager::finish_playback (void)
 511 {
 512   memset (m_attributes, 0, sizeof (m_attributes));
 513 }
 514
 515 /* Get the enum built_in_class for BUILTIN_ID.  */
 516
 517 enum built_in_class
 518 builtins_manager::get_class (enum built_in_function builtin_id)
 519 {
 520   return builtin_data[builtin_id].fnclass;
 521 }
 522
 523 /* Is BUILTIN_ID implicit?  */
 524
 525 bool
 526 builtins_manager::implicit_p (enum built_in_function builtin_id)
 527 {
 528   return builtin_data[builtin_id].implicit_p;
 529 }
 530
 531 /* Get any attributes (in tree form) for the function declaration
 532    for BUILTIN_ID.
 533
 534    These are created on-demand, and cached within the m_attributes
 535    array, until finish_playback.  */
 536
 537 tree
 538 builtins_manager::get_attrs_tree (enum built_in_function builtin_id)
 539 {
 540   enum built_in_attribute attr = builtin_data[builtin_id].attr;
 541   return get_attrs_tree (attr);
 542 }
 543
 544 /* As above, but for an enum built_in_attribute.  */
 545
 546 tree
 547 builtins_manager::get_attrs_tree (enum built_in_attribute attr)
 548 {
 549   gcc_assert (attr < ATTR_LAST);
 550   if (!m_attributes [attr])
 551     m_attributes [attr] = make_attrs_tree (attr);
 552   return m_attributes [attr];
 553 }
 554
 555 /* Handle a cache-miss within the m_attributes array by
 556    generating the attributes for enum built_in_attribute
 557    in tree form.  */
 558
 559 tree
 560 builtins_manager::make_attrs_tree (enum built_in_attribute attr)
 561 {
 562   switch (attr)
 563     {
 564       /* Generate cases from builtin-attrs.def.  */
 565 #define DEF_ATTR_NULL_TREE(ENUM)                                \
 566       case ENUM: return NULL_TREE;
 567 #define DEF_ATTR_INT(ENUM, VALUE)                               \
 568       case ENUM: return build_int_cst (integer_type_node, VALUE);
 569 #define DEF_ATTR_STRING(ENUM, VALUE)                            \
 570       case ENUM: return build_string (strlen (VALUE), VALUE);
 571 #define DEF_ATTR_IDENT(ENUM, STRING)                            \
 572       case ENUM: return get_identifier (STRING);
 573 #define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) \
 574       case ENUM: return tree_cons (get_attrs_tree (PURPOSE),    \
 575                                    get_attrs_tree (VALUE),      \
 576                                    get_attrs_tree (CHAIN));
 577 #include "builtin-attrs.def"
 578 #undef DEF_ATTR_NULL_TREE
 579 #undef DEF_ATTR_INT
 580 #undef DEF_ATTR_IDENT
 581 #undef DEF_ATTR_TREE_LIST
 582
 583     default:
 584       /* We somehow got a value not covered by the autogenerated
 585          cases.  */
 586       gcc_unreachable ();
 587       return NULL;
 588     }
 589 }
 590
 591 } // namespace jit
 592 } // namespace gcc