gcc/fortran/f95-lang.c

   1 /* gfortran backend interface
   2    Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
   3    Free Software Foundation, Inc.
   4    Contributed by Paul Brook.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 /* f95-lang.c-- GCC backend interface stuff */
  23
  24 /* declare required prototypes: */
  25
  26 #include "config.h"
  27 #include "system.h"
  28 #include "ansidecl.h"
  29 #include "system.h"
  30 #include "coretypes.h"
  31 #include "tree.h"
  32 #include "tree-gimple.h"
  33 #include "flags.h"
  34 #include "langhooks.h"
  35 #include "langhooks-def.h"
  36 #include "timevar.h"
  37 #include "tm.h"
  38 #include "function.h"
  39 #include "ggc.h"
  40 #include "toplev.h"
  41 #include "target.h"
  42 #include "debug.h"
  43 #include "diagnostic.h"
  44 #include "tree-dump.h"
  45 #include "cgraph.h"
  46
  47 #include "gfortran.h"
  48 #include "cpp.h"
  49 #include "trans.h"
  50 #include "trans-types.h"
  51 #include "trans-const.h"
  52
  53 /* Language-dependent contents of an identifier.  */
  54
  55 struct lang_identifier
  56 GTY(())
  57 {
  58   struct tree_identifier common;
  59 };
  60
  61 /* The resulting tree type.  */
  62
  63 union lang_tree_node
  64 GTY((desc ("TREE_CODE (&%h.generic) == IDENTIFIER_NODE"),
  65      chain_next ("(union lang_tree_node *)GENERIC_NEXT (&%h.generic)")))
  66
  67 {
  68   union tree_node GTY((tag ("0"),
  69                        desc ("tree_node_structure (&%h)"))) generic;
  70   struct lang_identifier GTY((tag ("1"))) identifier;
  71 };
  72
  73 /* Save and restore the variables in this file and elsewhere
  74    that keep track of the progress of compilation of the current function.
  75    Used for nested functions.  */
  76
  77 struct language_function
  78 GTY(())
  79 {
  80   /* struct gfc_language_function base; */
  81   struct binding_level *binding_level;
  82 };
  83
  84 /* We don't have a lex/yacc lexer/parser, but toplev expects these to
  85    exist anyway.  */
  86 void yyerror (const char *str);
  87 int yylex (void);
  88
  89 static void gfc_init_decl_processing (void);
  90 static void gfc_init_builtin_functions (void);
  91
  92 /* Each front end provides its own.  */
  93 static bool gfc_init (void);
  94 static void gfc_finish (void);
  95 static void gfc_print_identifier (FILE *, tree, int);
  96 static bool gfc_mark_addressable (tree);
  97 void do_function_end (void);
  98 int global_bindings_p (void);
  99 static void clear_binding_stack (void);
 100 static void gfc_be_parse_file (int);
 101 static alias_set_type gfc_get_alias_set (tree);
 102
 103 #undef LANG_HOOKS_NAME
 104 #undef LANG_HOOKS_INIT
 105 #undef LANG_HOOKS_FINISH
 106 #undef LANG_HOOKS_INIT_OPTIONS
 107 #undef LANG_HOOKS_HANDLE_OPTION
 108 #undef LANG_HOOKS_POST_OPTIONS
 109 #undef LANG_HOOKS_PRINT_IDENTIFIER
 110 #undef LANG_HOOKS_PARSE_FILE
 111 #undef LANG_HOOKS_MARK_ADDRESSABLE
 112 #undef LANG_HOOKS_TYPE_FOR_MODE
 113 #undef LANG_HOOKS_TYPE_FOR_SIZE
 114 #undef LANG_HOOKS_GET_ALIAS_SET
 115 #undef LANG_HOOKS_OMP_PRIVATIZE_BY_REFERENCE
 116 #undef LANG_HOOKS_OMP_PREDETERMINED_SHARING
 117 #undef LANG_HOOKS_OMP_CLAUSE_DEFAULT_CTOR
 118 #undef LANG_HOOKS_OMP_CLAUSE_COPY_CTOR
 119 #undef LANG_HOOKS_OMP_CLAUSE_ASSIGN_OP
 120 #undef LANG_HOOKS_OMP_CLAUSE_DTOR
 121 #undef LANG_HOOKS_OMP_DISREGARD_VALUE_EXPR
 122 #undef LANG_HOOKS_OMP_PRIVATE_DEBUG_CLAUSE
 123 #undef LANG_HOOKS_OMP_PRIVATE_OUTER_REF
 124 #undef LANG_HOOKS_OMP_FIRSTPRIVATIZE_TYPE_SIZES
 125 #undef LANG_HOOKS_BUILTIN_FUNCTION
 126 #undef LANG_HOOKS_GET_ARRAY_DESCR_INFO
 127
 128 /* Define lang hooks.  */
 129 #define LANG_HOOKS_NAME                 "GNU Fortran"
 130 #define LANG_HOOKS_INIT                 gfc_init
 131 #define LANG_HOOKS_FINISH               gfc_finish
 132 #define LANG_HOOKS_INIT_OPTIONS         gfc_init_options
 133 #define LANG_HOOKS_HANDLE_OPTION        gfc_handle_option
 134 #define LANG_HOOKS_POST_OPTIONS         gfc_post_options
 135 #define LANG_HOOKS_PRINT_IDENTIFIER     gfc_print_identifier
 136 #define LANG_HOOKS_PARSE_FILE           gfc_be_parse_file
 137 #define LANG_HOOKS_MARK_ADDRESSABLE        gfc_mark_addressable
 138 #define LANG_HOOKS_TYPE_FOR_MODE           gfc_type_for_mode
 139 #define LANG_HOOKS_TYPE_FOR_SIZE           gfc_type_for_size
 140 #define LANG_HOOKS_GET_ALIAS_SET           gfc_get_alias_set
 141 #define LANG_HOOKS_OMP_PRIVATIZE_BY_REFERENCE   gfc_omp_privatize_by_reference
 142 #define LANG_HOOKS_OMP_PREDETERMINED_SHARING    gfc_omp_predetermined_sharing
 143 #define LANG_HOOKS_OMP_CLAUSE_DEFAULT_CTOR      gfc_omp_clause_default_ctor
 144 #define LANG_HOOKS_OMP_CLAUSE_COPY_CTOR         gfc_omp_clause_copy_ctor
 145 #define LANG_HOOKS_OMP_CLAUSE_ASSIGN_OP         gfc_omp_clause_assign_op
 146 #define LANG_HOOKS_OMP_CLAUSE_DTOR              gfc_omp_clause_dtor
 147 #define LANG_HOOKS_OMP_DISREGARD_VALUE_EXPR     gfc_omp_disregard_value_expr
 148 #define LANG_HOOKS_OMP_PRIVATE_DEBUG_CLAUSE     gfc_omp_private_debug_clause
 149 #define LANG_HOOKS_OMP_PRIVATE_OUTER_REF        gfc_omp_private_outer_ref
 150 #define LANG_HOOKS_OMP_FIRSTPRIVATIZE_TYPE_SIZES \
 151   gfc_omp_firstprivatize_type_sizes
 152 #define LANG_HOOKS_BUILTIN_FUNCTION          gfc_builtin_function
 153 #define LANG_HOOKS_GET_ARRAY_DESCR_INFO      gfc_get_array_descr_info
 154
 155 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
 156
 157 #define NULL_BINDING_LEVEL (struct binding_level *) NULL
 158
 159 /* A chain of binding_level structures awaiting reuse.  */
 160
 161 static GTY(()) struct binding_level *free_binding_level;
 162
 163 /* The elements of `ridpointers' are identifier nodes
 164    for the reserved type names and storage classes.
 165    It is indexed by a RID_... value.  */
 166 tree *ridpointers = NULL;
 167
 168 /* Prepare expr to be an argument of a TRUTH_NOT_EXPR,
 169    or validate its data type for an `if' or `while' statement or ?..: exp.
 170
 171    This preparation consists of taking the ordinary
 172    representation of an expression expr and producing a valid tree
 173    boolean expression describing whether expr is nonzero.  We could
 174    simply always do build_binary_op (NE_EXPR, expr, boolean_false_node, 1),
 175    but we optimize comparisons, &&, ||, and !.
 176
 177    The resulting type should always be `boolean_type_node'.
 178    This is much simpler than the corresponding C version because we have a
 179    distinct boolean type.  */
 180
 181 tree
 182 gfc_truthvalue_conversion (tree expr)
 183 {
 184   switch (TREE_CODE (TREE_TYPE (expr)))
 185     {
 186     case BOOLEAN_TYPE:
 187       if (TREE_TYPE (expr) == boolean_type_node)
 188         return expr;
 189       else if (COMPARISON_CLASS_P (expr))
 190         {
 191           TREE_TYPE (expr) = boolean_type_node;
 192           return expr;
 193         }
 194       else if (TREE_CODE (expr) == NOP_EXPR)
 195         return fold_build1 (NOP_EXPR,
 196                             boolean_type_node, TREE_OPERAND (expr, 0));
 197       else
 198         return fold_build1 (NOP_EXPR, boolean_type_node, expr);
 199
 200     case INTEGER_TYPE:
 201       if (TREE_CODE (expr) == INTEGER_CST)
 202         return integer_zerop (expr) ? boolean_false_node : boolean_true_node;
 203       else
 204         return fold_build2 (NE_EXPR, boolean_type_node, expr,
 205                             build_int_cst (TREE_TYPE (expr), 0));
 206
 207     default:
 208       internal_error ("Unexpected type in truthvalue_conversion");
 209     }
 210 }
 211
 212
 213 static void
 214 gfc_create_decls (void)
 215 {
 216   /* GCC builtins.  */
 217   gfc_init_builtin_functions ();
 218
 219   /* Runtime/IO library functions.  */
 220   gfc_build_builtin_function_decls ();
 221
 222   gfc_init_constants ();
 223 }
 224
 225
 226 static void
 227 gfc_be_parse_file (int set_yydebug ATTRIBUTE_UNUSED)
 228 {
 229   int errors;
 230   int warnings;
 231
 232   gfc_create_decls ();
 233   gfc_parse_file ();
 234   gfc_generate_constructors ();
 235
 236   cgraph_finalize_compilation_unit ();
 237   cgraph_optimize ();
 238
 239   /* Tell the frontent about any errors.  */
 240   gfc_get_errors (&warnings, &errors);
 241   errorcount += errors;
 242   warningcount += warnings;
 243
 244   clear_binding_stack ();
 245 }
 246
 247
 248 /* Initialize everything.  */
 249
 250 static bool
 251 gfc_init (void)
 252 {
 253   if (!gfc_cpp_enabled ())
 254     {
 255       linemap_add (line_table, LC_ENTER, false, gfc_source_file, 1);
 256       linemap_add (line_table, LC_RENAME, false, "<built-in>", 0);
 257     }
 258   else
 259     gfc_cpp_init_0 ();
 260
 261   gfc_init_decl_processing ();
 262   gfc_static_ctors = NULL_TREE;
 263
 264   if (gfc_cpp_enabled ())
 265     gfc_cpp_init ();
 266
 267   gfc_init_1 ();
 268
 269   if (gfc_new_file () != SUCCESS)
 270     fatal_error ("can't open input file: %s", gfc_source_file);
 271
 272   return true;
 273 }
 274
 275
 276 static void
 277 gfc_finish (void)
 278 {
 279   gfc_cpp_done ();
 280   gfc_done_1 ();
 281   gfc_release_include_path ();
 282   return;
 283 }
 284
 285 static void
 286 gfc_print_identifier (FILE * file ATTRIBUTE_UNUSED,
 287                       tree node ATTRIBUTE_UNUSED,
 288                       int indent ATTRIBUTE_UNUSED)
 289 {
 290   return;
 291 }
 292
 293
 294 /* These functions and variables deal with binding contours.  We only
 295    need these functions for the list of PARM_DECLs, but we leave the
 296    functions more general; these are a simplified version of the
 297    functions from GNAT.  */
 298
 299 /* For each binding contour we allocate a binding_level structure which
 300    records the entities defined or declared in that contour.  Contours
 301    include:
 302
 303         the global one
 304         one for each subprogram definition
 305         one for each compound statement (declare block)
 306
 307    Binding contours are used to create GCC tree BLOCK nodes.  */
 308
 309 struct binding_level
 310 GTY(())
 311 {
 312   /* A chain of ..._DECL nodes for all variables, constants, functions,
 313      parameters and type declarations.  These ..._DECL nodes are chained
 314      through the TREE_CHAIN field. Note that these ..._DECL nodes are stored
 315      in the reverse of the order supplied to be compatible with the
 316      back-end.  */
 317   tree names;
 318   /* For each level (except the global one), a chain of BLOCK nodes for all
 319      the levels that were entered and exited one level down from this one.  */
 320   tree blocks;
 321   /* The binding level containing this one (the enclosing binding level).  */
 322   struct binding_level *level_chain;
 323 };
 324
 325 /* The binding level currently in effect.  */
 326 static GTY(()) struct binding_level *current_binding_level = NULL;
 327
 328 /* The outermost binding level. This binding level is created when the
 329    compiler is started and it will exist through the entire compilation.  */
 330 static GTY(()) struct binding_level *global_binding_level;
 331
 332 /* Binding level structures are initialized by copying this one.  */
 333 static struct binding_level clear_binding_level = { NULL, NULL, NULL };
 334
 335
 336 /* Return nonzero if we are currently in the global binding level.  */
 337
 338 int
 339 global_bindings_p (void)
 340 {
 341   return current_binding_level == global_binding_level ? -1 : 0;
 342 }
 343
 344 tree
 345 getdecls (void)
 346 {
 347   return current_binding_level->names;
 348 }
 349
 350 /* Enter a new binding level. The input parameter is ignored, but has to be
 351    specified for back-end compatibility.  */
 352
 353 void
 354 pushlevel (int ignore ATTRIBUTE_UNUSED)
 355 {
 356   struct binding_level *newlevel
 357     = (struct binding_level *) ggc_alloc (sizeof (struct binding_level));
 358
 359   *newlevel = clear_binding_level;
 360
 361   /* Add this level to the front of the chain (stack) of levels that are
 362      active.  */
 363   newlevel->level_chain = current_binding_level;
 364   current_binding_level = newlevel;
 365 }
 366
 367 /* Exit a binding level.
 368    Pop the level off, and restore the state of the identifier-decl mappings
 369    that were in effect when this level was entered.
 370
 371    If KEEP is nonzero, this level had explicit declarations, so
 372    and create a "block" (a BLOCK node) for the level
 373    to record its declarations and subblocks for symbol table output.
 374
 375    If FUNCTIONBODY is nonzero, this level is the body of a function,
 376    so create a block as if KEEP were set and also clear out all
 377    label names.
 378
 379    If REVERSE is nonzero, reverse the order of decls before putting
 380    them into the BLOCK.  */
 381
 382 tree
 383 poplevel (int keep, int reverse, int functionbody)
 384 {
 385   /* Points to a BLOCK tree node. This is the BLOCK node constructed for the
 386      binding level that we are about to exit and which is returned by this
 387      routine.  */
 388   tree block_node = NULL_TREE;
 389   tree decl_chain;
 390   tree subblock_chain = current_binding_level->blocks;
 391   tree subblock_node;
 392
 393   /* Reverse the list of XXXX_DECL nodes if desired.  Note that the ..._DECL
 394      nodes chained through the `names' field of current_binding_level are in
 395      reverse order except for PARM_DECL node, which are explicitly stored in
 396      the right order.  */
 397   decl_chain = (reverse) ? nreverse (current_binding_level->names)
 398                          : current_binding_level->names;
 399
 400   /* If there were any declarations in the current binding level, or if this
 401      binding level is a function body, or if there are any nested blocks then
 402      create a BLOCK node to record them for the life of this function.  */
 403   if (keep || functionbody)
 404     block_node = build_block (keep ? decl_chain : 0, subblock_chain, 0, 0);
 405
 406   /* Record the BLOCK node just built as the subblock its enclosing scope.  */
 407   for (subblock_node = subblock_chain; subblock_node;
 408        subblock_node = TREE_CHAIN (subblock_node))
 409     BLOCK_SUPERCONTEXT (subblock_node) = block_node;
 410
 411   /* Clear out the meanings of the local variables of this level.  */
 412
 413   for (subblock_node = decl_chain; subblock_node;
 414        subblock_node = TREE_CHAIN (subblock_node))
 415     if (DECL_NAME (subblock_node) != 0)
 416       /* If the identifier was used or addressed via a local extern decl,
 417          don't forget that fact.  */
 418       if (DECL_EXTERNAL (subblock_node))
 419         {
 420           if (TREE_USED (subblock_node))
 421             TREE_USED (DECL_NAME (subblock_node)) = 1;
 422           if (TREE_ADDRESSABLE (subblock_node))
 423             TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (subblock_node)) = 1;
 424         }
 425
 426   /* Pop the current level.  */
 427   current_binding_level = current_binding_level->level_chain;
 428
 429   if (functionbody)
 430     {
 431       /* This is the top level block of a function. The ..._DECL chain stored
 432          in BLOCK_VARS are the function's parameters (PARM_DECL nodes). Don't
 433          leave them in the BLOCK because they are found in the FUNCTION_DECL
 434          instead.  */
 435       DECL_INITIAL (current_function_decl) = block_node;
 436       BLOCK_VARS (block_node) = 0;
 437     }
 438   else if (block_node)
 439     {
 440       current_binding_level->blocks
 441         = chainon (current_binding_level->blocks, block_node);
 442     }
 443
 444   /* If we did not make a block for the level just exited, any blocks made for
 445      inner levels (since they cannot be recorded as subblocks in that level)
 446      must be carried forward so they will later become subblocks of something
 447      else.  */
 448   else if (subblock_chain)
 449     current_binding_level->blocks
 450       = chainon (current_binding_level->blocks, subblock_chain);
 451   if (block_node)
 452     TREE_USED (block_node) = 1;
 453
 454   return block_node;
 455 }
 456
 457
 458 /* Records a ..._DECL node DECL as belonging to the current lexical scope.
 459    Returns the ..._DECL node.  */
 460
 461 tree
 462 pushdecl (tree decl)
 463 {
 464   /* External objects aren't nested, other objects may be.  */
 465   if ((DECL_EXTERNAL (decl)) || (decl == current_function_decl))
 466     DECL_CONTEXT (decl) = 0;
 467   else
 468     DECL_CONTEXT (decl) = current_function_decl;
 469
 470   /* Put the declaration on the list.  The list of declarations is in reverse
 471      order. The list will be reversed later if necessary.  This needs to be
 472      this way for compatibility with the back-end.  */
 473
 474   TREE_CHAIN (decl) = current_binding_level->names;
 475   current_binding_level->names = decl;
 476
 477   /* For the declaration of a type, set its name if it is not already set.  */
 478
 479   if (TREE_CODE (decl) == TYPE_DECL && TYPE_NAME (TREE_TYPE (decl)) == 0)
 480     {
 481       if (DECL_SOURCE_LINE (decl) == 0)
 482         TYPE_NAME (TREE_TYPE (decl)) = decl;
 483       else
 484         TYPE_NAME (TREE_TYPE (decl)) = DECL_NAME (decl);
 485     }
 486
 487   return decl;
 488 }
 489
 490
 491 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL.  */
 492
 493 tree
 494 pushdecl_top_level (tree x)
 495 {
 496   tree t;
 497   struct binding_level *b = current_binding_level;
 498
 499   current_binding_level = global_binding_level;
 500   t = pushdecl (x);
 501   current_binding_level = b;
 502   return t;
 503 }
 504
 505
 506 /* Clear the binding stack.  */
 507 static void
 508 clear_binding_stack (void)
 509 {
 510   while (!global_bindings_p ())
 511     poplevel (0, 0, 0);
 512 }
 513
 514
 515 #ifndef CHAR_TYPE_SIZE
 516 #define CHAR_TYPE_SIZE BITS_PER_UNIT
 517 #endif
 518
 519 #ifndef INT_TYPE_SIZE
 520 #define INT_TYPE_SIZE BITS_PER_WORD
 521 #endif
 522
 523 #undef SIZE_TYPE
 524 #define SIZE_TYPE "long unsigned int"
 525
 526 /* Create tree nodes for the basic scalar types of Fortran 95,
 527    and some nodes representing standard constants (0, 1, (void *) 0).
 528    Initialize the global binding level.
 529    Make definitions for built-in primitive functions.  */
 530 static void
 531 gfc_init_decl_processing (void)
 532 {
 533   current_function_decl = NULL;
 534   current_binding_level = NULL_BINDING_LEVEL;
 535   free_binding_level = NULL_BINDING_LEVEL;
 536
 537   /* Make the binding_level structure for global names. We move all
 538      variables that are in a COMMON block to this binding level.  */
 539   pushlevel (0);
 540   global_binding_level = current_binding_level;
 541
 542   /* Build common tree nodes. char_type_node is unsigned because we
 543      only use it for actual characters, not for INTEGER(1). Also, we
 544      want double_type_node to actually have double precision.  */
 545   build_common_tree_nodes (false, false);
 546   /* x86_64 minw32 has a sizetype of "unsigned long long", most other hosts
 547      have a sizetype of "unsigned long". Therefore choose the correct size
 548      in mostly target independent way.  */
 549   if (TYPE_MODE (long_unsigned_type_node) == ptr_mode)
 550     set_sizetype (long_unsigned_type_node);
 551   else if (TYPE_MODE (long_long_unsigned_type_node) == ptr_mode)
 552     set_sizetype (long_long_unsigned_type_node);
 553   else
 554     set_sizetype (long_unsigned_type_node);
 555   build_common_tree_nodes_2 (0);
 556   void_list_node = build_tree_list (NULL_TREE, void_type_node);
 557
 558   /* Set up F95 type nodes.  */
 559   gfc_init_kinds ();
 560   gfc_init_types ();
 561 }
 562
 563
 564 /* Mark EXP saying that we need to be able to take the
 565    address of it; it should not be allocated in a register.
 566    In Fortran 95 this is only the case for variables with
 567    the TARGET attribute, but we implement it here for a
 568    likely future Cray pointer extension.
 569    Value is 1 if successful.  */
 570 /* TODO: Check/fix mark_addressable.  */
 571
 572 bool
 573 gfc_mark_addressable (tree exp)
 574 {
 575   register tree x = exp;
 576   while (1)
 577     switch (TREE_CODE (x))
 578       {
 579       case COMPONENT_REF:
 580       case ADDR_EXPR:
 581       case ARRAY_REF:
 582       case REALPART_EXPR:
 583       case IMAGPART_EXPR:
 584         x = TREE_OPERAND (x, 0);
 585         break;
 586
 587       case CONSTRUCTOR:
 588         TREE_ADDRESSABLE (x) = 1;
 589         return true;
 590
 591       case VAR_DECL:
 592       case CONST_DECL:
 593       case PARM_DECL:
 594       case RESULT_DECL:
 595         if (DECL_REGISTER (x) && !TREE_ADDRESSABLE (x) && DECL_NONLOCAL (x))
 596           {
 597             if (TREE_PUBLIC (x))
 598               {
 599                 error ("global register variable %qs used in nested function",
 600                        IDENTIFIER_POINTER (DECL_NAME (x)));
 601                 return false;
 602               }
 603             pedwarn ("register variable %qs used in nested function",
 604                      IDENTIFIER_POINTER (DECL_NAME (x)));
 605           }
 606         else if (DECL_REGISTER (x) && !TREE_ADDRESSABLE (x))
 607           {
 608             if (TREE_PUBLIC (x))
 609               {
 610                 error ("address of global register variable %qs requested",
 611                        IDENTIFIER_POINTER (DECL_NAME (x)));
 612                 return true;
 613               }
 614
 615 #if 0
 616             /* If we are making this addressable due to its having
 617                volatile components, give a different error message.  Also
 618                handle the case of an unnamed parameter by not trying
 619                to give the name.  */
 620
 621             else if (C_TYPE_FIELDS_VOLATILE (TREE_TYPE (x)))
 622               {
 623                 error ("cannot put object with volatile field into register");
 624                 return false;
 625               }
 626 #endif
 627
 628             pedwarn ("address of register variable %qs requested",
 629                      IDENTIFIER_POINTER (DECL_NAME (x)));
 630           }
 631
 632         /* drops in */
 633       case FUNCTION_DECL:
 634         TREE_ADDRESSABLE (x) = 1;
 635
 636       default:
 637         return true;
 638       }
 639 }
 640
 641
 642 /* Return the typed-based alias set for T, which may be an expression
 643    or a type.  Return -1 if we don't do anything special.  */
 644
 645 static alias_set_type
 646 gfc_get_alias_set (tree t)
 647 {
 648   tree u;
 649
 650   /* Permit type-punning when accessing an EQUIVALENCEd variable or
 651      mixed type entry master's return value.  */
 652   for (u = t; handled_component_p (u); u = TREE_OPERAND (u, 0))
 653     if (TREE_CODE (u) == COMPONENT_REF
 654         && TREE_CODE (TREE_TYPE (TREE_OPERAND (u, 0))) == UNION_TYPE)
 655       return 0;
 656
 657   return -1;
 658 }
 659
 660
 661 /* press the big red button - garbage (ggc) collection is on */
 662
 663 int ggc_p = 1;
 664
 665 /* Builtin function initialization.  */
 666
 667 tree
 668 gfc_builtin_function (tree decl)
 669 {
 670   make_decl_rtl (decl);
 671   pushdecl (decl);
 672   return decl;
 673 }
 674
 675
 676 static void
 677 gfc_define_builtin (const char *name,
 678                     tree type,
 679                     int code,
 680                     const char *library_name,
 681                     bool const_p)
 682 {
 683   tree decl;
 684
 685   decl = add_builtin_function (name, type, code, BUILT_IN_NORMAL,
 686                                library_name, NULL_TREE);
 687   if (const_p)
 688     TREE_READONLY (decl) = 1;
 689
 690   built_in_decls[code] = decl;
 691   implicit_built_in_decls[code] = decl;
 692 }
 693
 694
 695 #define DO_DEFINE_MATH_BUILTIN(code, name, argtype, tbase) \
 696     gfc_define_builtin ("__builtin_" name "l", tbase##longdouble[argtype], \
 697                        BUILT_IN_ ## code ## L, name "l", true); \
 698     gfc_define_builtin ("__builtin_" name, tbase##double[argtype], \
 699                         BUILT_IN_ ## code, name, true); \
 700     gfc_define_builtin ("__builtin_" name "f", tbase##float[argtype], \
 701                         BUILT_IN_ ## code ## F, name "f", true);
 702
 703 #define DEFINE_MATH_BUILTIN(code, name, argtype) \
 704     DO_DEFINE_MATH_BUILTIN (code, name, argtype, mfunc_)
 705
 706 #define DEFINE_MATH_BUILTIN_C(code, name, argtype) \
 707     DO_DEFINE_MATH_BUILTIN (code, name, argtype, mfunc_) \
 708     DO_DEFINE_MATH_BUILTIN (C##code, "c" name, argtype, mfunc_c)
 709
 710
 711 /* Create function types for builtin functions.  */
 712
 713 static void
 714 build_builtin_fntypes (tree *fntype, tree type)
 715 {
 716   tree tmp;
 717
 718   /* type (*) (type) */
 719   tmp = tree_cons (NULL_TREE, type, void_list_node);
 720   fntype[0] = build_function_type (type, tmp);
 721   /* type (*) (type, type) */
 722   tmp = tree_cons (NULL_TREE, type, tmp);
 723   fntype[1] = build_function_type (type, tmp);
 724   /* type (*) (int, type) */
 725   tmp = tree_cons (NULL_TREE, integer_type_node, void_list_node);
 726   tmp = tree_cons (NULL_TREE, type, tmp);
 727   fntype[2] = build_function_type (type, tmp);
 728   /* type (*) (void) */
 729   fntype[3] = build_function_type (type, void_list_node);
 730   /* type (*) (type, &int) */
 731   tmp = tree_cons (NULL_TREE, type, void_list_node);
 732   tmp = tree_cons (NULL_TREE, build_pointer_type (integer_type_node), tmp);
 733   fntype[4] = build_function_type (type, tmp);
 734   /* type (*) (type, int) */
 735   tmp = tree_cons (NULL_TREE, type, void_list_node);
 736   tmp = tree_cons (NULL_TREE, integer_type_node, tmp);
 737   fntype[5] = build_function_type (type, tmp);
 738 }
 739
 740
 741 static tree
 742 builtin_type_for_size (int size, bool unsignedp)
 743 {
 744   tree type = lang_hooks.types.type_for_size (size, unsignedp);
 745   return type ? type : error_mark_node;
 746 }
 747
 748 /* Initialization of builtin function nodes.  */
 749
 750 static void
 751 gfc_init_builtin_functions (void)
 752 {
 753   enum builtin_type
 754   {
 755 #define DEF_PRIMITIVE_TYPE(NAME, VALUE) NAME,
 756 #define DEF_FUNCTION_TYPE_0(NAME, RETURN) NAME,
 757 #define DEF_FUNCTION_TYPE_1(NAME, RETURN, ARG1) NAME,
 758 #define DEF_FUNCTION_TYPE_2(NAME, RETURN, ARG1, ARG2) NAME,
 759 #define DEF_FUNCTION_TYPE_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
 760 #define DEF_FUNCTION_TYPE_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME,
 761 #define DEF_FUNCTION_TYPE_5(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) NAME,
 762 #define DEF_FUNCTION_TYPE_6(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6) NAME,
 763 #define DEF_FUNCTION_TYPE_7(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7) NAME,
 764 #define DEF_FUNCTION_TYPE_VAR_0(NAME, RETURN) NAME,
 765 #define DEF_POINTER_TYPE(NAME, TYPE) NAME,
 766 #include "types.def"
 767 #undef DEF_PRIMITIVE_TYPE
 768 #undef DEF_FUNCTION_TYPE_0
 769 #undef DEF_FUNCTION_TYPE_1
 770 #undef DEF_FUNCTION_TYPE_2
 771 #undef DEF_FUNCTION_TYPE_3
 772 #undef DEF_FUNCTION_TYPE_4
 773 #undef DEF_FUNCTION_TYPE_5
 774 #undef DEF_FUNCTION_TYPE_6
 775 #undef DEF_FUNCTION_TYPE_7
 776 #undef DEF_FUNCTION_TYPE_VAR_0
 777 #undef DEF_POINTER_TYPE
 778     BT_LAST
 779   };
 780   typedef enum builtin_type builtin_type;
 781   enum
 782   {
 783     /* So far we need just these 2 attribute types.  */
 784     ATTR_NOTHROW_LIST,
 785     ATTR_CONST_NOTHROW_LIST
 786   };
 787
 788   tree mfunc_float[6];
 789   tree mfunc_double[6];
 790   tree mfunc_longdouble[6];
 791   tree mfunc_cfloat[6];
 792   tree mfunc_cdouble[6];
 793   tree mfunc_clongdouble[6];
 794   tree func_cfloat_float, func_float_cfloat;
 795   tree func_cdouble_double, func_double_cdouble;
 796   tree func_clongdouble_longdouble, func_longdouble_clongdouble;
 797   tree func_float_floatp_floatp;
 798   tree func_double_doublep_doublep;
 799   tree func_longdouble_longdoublep_longdoublep;
 800   tree ftype, ptype;
 801   tree tmp, type;
 802   tree builtin_types[(int) BT_LAST + 1];
 803
 804   build_builtin_fntypes (mfunc_float, float_type_node);
 805   build_builtin_fntypes (mfunc_double, double_type_node);
 806   build_builtin_fntypes (mfunc_longdouble, long_double_type_node);
 807   build_builtin_fntypes (mfunc_cfloat, complex_float_type_node);
 808   build_builtin_fntypes (mfunc_cdouble, complex_double_type_node);
 809   build_builtin_fntypes (mfunc_clongdouble, complex_long_double_type_node);
 810
 811   tmp = tree_cons (NULL_TREE, complex_float_type_node, void_list_node);
 812   func_cfloat_float = build_function_type (float_type_node, tmp);
 813
 814   tmp = tree_cons (NULL_TREE, float_type_node, void_list_node);
 815   func_float_cfloat = build_function_type (complex_float_type_node, tmp);
 816
 817   tmp = tree_cons (NULL_TREE, complex_double_type_node, void_list_node);
 818   func_cdouble_double = build_function_type (double_type_node, tmp);
 819
 820   tmp = tree_cons (NULL_TREE, double_type_node, void_list_node);
 821   func_double_cdouble = build_function_type (complex_double_type_node, tmp);
 822
 823   tmp = tree_cons (NULL_TREE, complex_long_double_type_node, void_list_node);
 824   func_clongdouble_longdouble =
 825     build_function_type (long_double_type_node, tmp);
 826
 827   tmp = tree_cons (NULL_TREE, long_double_type_node, void_list_node);
 828   func_longdouble_clongdouble =
 829     build_function_type (complex_long_double_type_node, tmp);
 830
 831   ptype = build_pointer_type (float_type_node);
 832   tmp = tree_cons (NULL_TREE, float_type_node,
 833                    tree_cons (NULL_TREE, ptype,
 834                               tree_cons (NULL_TREE, ptype, void_list_node)));
 835   func_float_floatp_floatp =
 836     build_function_type (void_type_node, tmp);
 837
 838   ptype = build_pointer_type (double_type_node);
 839   tmp = tree_cons (NULL_TREE, double_type_node,
 840                    tree_cons (NULL_TREE, ptype,
 841                               tree_cons (NULL_TREE, ptype, void_list_node)));
 842   func_double_doublep_doublep =
 843     build_function_type (void_type_node, tmp);
 844
 845   ptype = build_pointer_type (long_double_type_node);
 846   tmp = tree_cons (NULL_TREE, long_double_type_node,
 847                    tree_cons (NULL_TREE, ptype,
 848                               tree_cons (NULL_TREE, ptype, void_list_node)));
 849   func_longdouble_longdoublep_longdoublep =
 850     build_function_type (void_type_node, tmp);
 851
 852 #include "mathbuiltins.def"
 853
 854   /* We define these separately as the fortran versions have different
 855      semantics (they return an integer type) */
 856   gfc_define_builtin ("__builtin_roundl", mfunc_longdouble[0],
 857                       BUILT_IN_ROUNDL, "roundl", true);
 858   gfc_define_builtin ("__builtin_round", mfunc_double[0],
 859                       BUILT_IN_ROUND, "round", true);
 860   gfc_define_builtin ("__builtin_roundf", mfunc_float[0],
 861                       BUILT_IN_ROUNDF, "roundf", true);
 862
 863   gfc_define_builtin ("__builtin_truncl", mfunc_longdouble[0],
 864                       BUILT_IN_TRUNCL, "truncl", true);
 865   gfc_define_builtin ("__builtin_trunc", mfunc_double[0],
 866                       BUILT_IN_TRUNC, "trunc", true);
 867   gfc_define_builtin ("__builtin_truncf", mfunc_float[0],
 868                       BUILT_IN_TRUNCF, "truncf", true);
 869
 870   gfc_define_builtin ("__builtin_cabsl", func_clongdouble_longdouble,
 871                       BUILT_IN_CABSL, "cabsl", true);
 872   gfc_define_builtin ("__builtin_cabs", func_cdouble_double,
 873                       BUILT_IN_CABS, "cabs", true);
 874   gfc_define_builtin ("__builtin_cabsf", func_cfloat_float,
 875                       BUILT_IN_CABSF, "cabsf", true);
 876
 877   gfc_define_builtin ("__builtin_copysignl", mfunc_longdouble[1],
 878                       BUILT_IN_COPYSIGNL, "copysignl", true);
 879   gfc_define_builtin ("__builtin_copysign", mfunc_double[1],
 880                       BUILT_IN_COPYSIGN, "copysign", true);
 881   gfc_define_builtin ("__builtin_copysignf", mfunc_float[1],
 882                       BUILT_IN_COPYSIGNF, "copysignf", true);
 883
 884   gfc_define_builtin ("__builtin_nextafterl", mfunc_longdouble[1],
 885                       BUILT_IN_NEXTAFTERL, "nextafterl", true);
 886   gfc_define_builtin ("__builtin_nextafter", mfunc_double[1],
 887                       BUILT_IN_NEXTAFTER, "nextafter", true);
 888   gfc_define_builtin ("__builtin_nextafterf", mfunc_float[1],
 889                       BUILT_IN_NEXTAFTERF, "nextafterf", true);
 890
 891   gfc_define_builtin ("__builtin_frexpl", mfunc_longdouble[4],
 892                       BUILT_IN_FREXPL, "frexpl", false);
 893   gfc_define_builtin ("__builtin_frexp", mfunc_double[4],
 894                       BUILT_IN_FREXP, "frexp", false);
 895   gfc_define_builtin ("__builtin_frexpf", mfunc_float[4],
 896                       BUILT_IN_FREXPF, "frexpf", false);
 897
 898   gfc_define_builtin ("__builtin_fabsl", mfunc_longdouble[0],
 899                       BUILT_IN_FABSL, "fabsl", true);
 900   gfc_define_builtin ("__builtin_fabs", mfunc_double[0],
 901                       BUILT_IN_FABS, "fabs", true);
 902   gfc_define_builtin ("__builtin_fabsf", mfunc_float[0],
 903                       BUILT_IN_FABSF, "fabsf", true);
 904
 905   gfc_define_builtin ("__builtin_scalbnl", mfunc_longdouble[5],
 906                       BUILT_IN_SCALBNL, "scalbnl", true);
 907   gfc_define_builtin ("__builtin_scalbn", mfunc_double[5],
 908                       BUILT_IN_SCALBN, "scalbn", true);
 909   gfc_define_builtin ("__builtin_scalbnf", mfunc_float[5],
 910                       BUILT_IN_SCALBNF, "scalbnf", true);
 911
 912   gfc_define_builtin ("__builtin_fmodl", mfunc_longdouble[1],
 913                       BUILT_IN_FMODL, "fmodl", true);
 914   gfc_define_builtin ("__builtin_fmod", mfunc_double[1],
 915                       BUILT_IN_FMOD, "fmod", true);
 916   gfc_define_builtin ("__builtin_fmodf", mfunc_float[1],
 917                       BUILT_IN_FMODF, "fmodf", true);
 918
 919   gfc_define_builtin ("__builtin_infl", mfunc_longdouble[3],
 920                       BUILT_IN_INFL, "__builtin_infl", true);
 921   gfc_define_builtin ("__builtin_inf", mfunc_double[3],
 922                       BUILT_IN_INF, "__builtin_inf", true);
 923   gfc_define_builtin ("__builtin_inff", mfunc_float[3],
 924                       BUILT_IN_INFF, "__builtin_inff", true);
 925
 926   /* lround{f,,l} and llround{f,,l} */
 927   type = tree_cons (NULL_TREE, float_type_node, void_list_node);
 928   tmp = build_function_type (long_integer_type_node, type);
 929   gfc_define_builtin ("__builtin_lroundf", tmp, BUILT_IN_LROUNDF,
 930                       "lroundf", true);
 931   tmp = build_function_type (long_long_integer_type_node, type);
 932   gfc_define_builtin ("__builtin_llroundf", tmp, BUILT_IN_LLROUNDF,
 933                       "llroundf", true);
 934
 935   type = tree_cons (NULL_TREE, double_type_node, void_list_node);
 936   tmp = build_function_type (long_integer_type_node, type);
 937   gfc_define_builtin ("__builtin_lround", tmp, BUILT_IN_LROUND,
 938                       "lround", true);
 939   tmp = build_function_type (long_long_integer_type_node, type);
 940   gfc_define_builtin ("__builtin_llround", tmp, BUILT_IN_LLROUND,
 941                       "llround", true);
 942
 943   type = tree_cons (NULL_TREE, long_double_type_node, void_list_node);
 944   tmp = build_function_type (long_integer_type_node, type);
 945   gfc_define_builtin ("__builtin_lroundl", tmp, BUILT_IN_LROUNDL,
 946                       "lroundl", true);
 947   tmp = build_function_type (long_long_integer_type_node, type);
 948   gfc_define_builtin ("__builtin_llroundl", tmp, BUILT_IN_LLROUNDL,
 949                       "llroundl", true);
 950
 951   /* These are used to implement the ** operator.  */
 952   gfc_define_builtin ("__builtin_powl", mfunc_longdouble[1],
 953                       BUILT_IN_POWL, "powl", true);
 954   gfc_define_builtin ("__builtin_pow", mfunc_double[1],
 955                       BUILT_IN_POW, "pow", true);
 956   gfc_define_builtin ("__builtin_powf", mfunc_float[1],
 957                       BUILT_IN_POWF, "powf", true);
 958   gfc_define_builtin ("__builtin_cpowl", mfunc_clongdouble[1],
 959                       BUILT_IN_CPOWL, "cpowl", true);
 960   gfc_define_builtin ("__builtin_cpow", mfunc_cdouble[1],
 961                       BUILT_IN_CPOW, "cpow", true);
 962   gfc_define_builtin ("__builtin_cpowf", mfunc_cfloat[1],
 963                       BUILT_IN_CPOWF, "cpowf", true);
 964   gfc_define_builtin ("__builtin_powil", mfunc_longdouble[2],
 965                       BUILT_IN_POWIL, "powil", true);
 966   gfc_define_builtin ("__builtin_powi", mfunc_double[2],
 967                       BUILT_IN_POWI, "powi", true);
 968   gfc_define_builtin ("__builtin_powif", mfunc_float[2],
 969                       BUILT_IN_POWIF, "powif", true);
 970
 971
 972   if (TARGET_C99_FUNCTIONS)
 973     {
 974       gfc_define_builtin ("__builtin_cbrtl", mfunc_longdouble[0],
 975                           BUILT_IN_CBRTL, "cbrtl", true);
 976       gfc_define_builtin ("__builtin_cbrt", mfunc_double[0],
 977                           BUILT_IN_CBRT, "cbrt", true);
 978       gfc_define_builtin ("__builtin_cbrtf", mfunc_float[0],
 979                           BUILT_IN_CBRTF, "cbrtf", true);
 980       gfc_define_builtin ("__builtin_cexpil", func_longdouble_clongdouble,
 981                           BUILT_IN_CEXPIL, "cexpil", true);
 982       gfc_define_builtin ("__builtin_cexpi", func_double_cdouble,
 983                           BUILT_IN_CEXPI, "cexpi", true);
 984       gfc_define_builtin ("__builtin_cexpif", func_float_cfloat,
 985                           BUILT_IN_CEXPIF, "cexpif", true);
 986     }
 987
 988   if (TARGET_HAS_SINCOS)
 989     {
 990       gfc_define_builtin ("__builtin_sincosl",
 991                           func_longdouble_longdoublep_longdoublep,
 992                           BUILT_IN_SINCOSL, "sincosl", false);
 993       gfc_define_builtin ("__builtin_sincos", func_double_doublep_doublep,
 994                           BUILT_IN_SINCOS, "sincos", false);
 995       gfc_define_builtin ("__builtin_sincosf", func_float_floatp_floatp,
 996                           BUILT_IN_SINCOSF, "sincosf", false);
 997     }
 998
 999   /* Other builtin functions we use.  */
1000
1001   tmp = tree_cons (NULL_TREE, long_integer_type_node, void_list_node);
1002   tmp = tree_cons (NULL_TREE, long_integer_type_node, tmp);
1003   ftype = build_function_type (long_integer_type_node, tmp);
1004   gfc_define_builtin ("__builtin_expect", ftype, BUILT_IN_EXPECT,
1005                       "__builtin_expect", true);
1006
1007   tmp = tree_cons (NULL_TREE, pvoid_type_node, void_list_node);
1008   ftype = build_function_type (void_type_node, tmp);
1009   gfc_define_builtin ("__builtin_free", ftype, BUILT_IN_FREE,
1010                       "free", false);
1011
1012   tmp = tree_cons (NULL_TREE, size_type_node, void_list_node);
1013   ftype = build_function_type (pvoid_type_node, tmp);
1014   gfc_define_builtin ("__builtin_malloc", ftype, BUILT_IN_MALLOC,
1015                       "malloc", false);
1016   DECL_IS_MALLOC (built_in_decls[BUILT_IN_MALLOC]) = 1;
1017
1018   tmp = tree_cons (NULL_TREE, pvoid_type_node, void_list_node);
1019   tmp = tree_cons (NULL_TREE, size_type_node, tmp);
1020   ftype = build_function_type (pvoid_type_node, tmp);
1021   gfc_define_builtin ("__builtin_realloc", ftype, BUILT_IN_REALLOC,
1022                       "realloc", false);
1023
1024   tmp = tree_cons (NULL_TREE, void_type_node, void_list_node);
1025   ftype = build_function_type (integer_type_node, tmp);
1026   gfc_define_builtin ("__builtin_isnan", ftype, BUILT_IN_ISNAN,
1027                       "__builtin_isnan", true);
1028
1029 #define DEF_PRIMITIVE_TYPE(ENUM, VALUE) \
1030   builtin_types[(int) ENUM] = VALUE;
1031 #define DEF_FUNCTION_TYPE_0(ENUM, RETURN)               \
1032   builtin_types[(int) ENUM]                             \
1033     = build_function_type (builtin_types[(int) RETURN], \
1034                            void_list_node);
1035 #define DEF_FUNCTION_TYPE_1(ENUM, RETURN, ARG1)                         \
1036   builtin_types[(int) ENUM]                                             \
1037     = build_function_type (builtin_types[(int) RETURN],                 \
1038                            tree_cons (NULL_TREE,                        \
1039                                       builtin_types[(int) ARG1],        \
1040                                       void_list_node));
1041 #define DEF_FUNCTION_TYPE_2(ENUM, RETURN, ARG1, ARG2)   \
1042   builtin_types[(int) ENUM]                             \
1043     = build_function_type                               \
1044       (builtin_types[(int) RETURN],                     \
1045        tree_cons (NULL_TREE,                            \
1046                   builtin_types[(int) ARG1],            \
1047                   tree_cons (NULL_TREE,                 \
1048                              builtin_types[(int) ARG2], \
1049                              void_list_node)));
1050 #define DEF_FUNCTION_TYPE_3(ENUM, RETURN, ARG1, ARG2, ARG3)              \
1051   builtin_types[(int) ENUM]                                              \
1052     = build_function_type                                                \
1053       (builtin_types[(int) RETURN],                                      \
1054        tree_cons (NULL_TREE,                                             \
1055                   builtin_types[(int) ARG1],                             \
1056                   tree_cons (NULL_TREE,                                  \
1057                              builtin_types[(int) ARG2],                  \
1058                              tree_cons (NULL_TREE,                       \
1059                                         builtin_types[(int) ARG3],       \
1060                                         void_list_node))));
1061 #define DEF_FUNCTION_TYPE_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4)       \
1062   builtin_types[(int) ENUM]                                             \
1063     = build_function_type                                               \
1064       (builtin_types[(int) RETURN],                                     \
1065        tree_cons (NULL_TREE,                                            \
1066                   builtin_types[(int) ARG1],                            \
1067                   tree_cons (NULL_TREE,                                 \
1068                              builtin_types[(int) ARG2],                 \
1069                              tree_cons                                  \
1070                              (NULL_TREE,                                \
1071                               builtin_types[(int) ARG3],                \
1072                               tree_cons (NULL_TREE,                     \
1073                                          builtin_types[(int) ARG4],     \
1074                                          void_list_node)))));
1075 #define DEF_FUNCTION_TYPE_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \
1076   builtin_types[(int) ENUM]                                             \
1077     = build_function_type                                               \
1078       (builtin_types[(int) RETURN],                                     \
1079        tree_cons (NULL_TREE,                                            \
1080                   builtin_types[(int) ARG1],                            \
1081                   tree_cons (NULL_TREE,                                 \
1082                              builtin_types[(int) ARG2],                 \
1083                              tree_cons                                  \
1084                              (NULL_TREE,                                \
1085                               builtin_types[(int) ARG3],                \
1086                               tree_cons (NULL_TREE,                     \
1087                                          builtin_types[(int) ARG4],     \
1088                                          tree_cons (NULL_TREE,          \
1089                                               builtin_types[(int) ARG5],\
1090                                               void_list_node))))));
1091 #define DEF_FUNCTION_TYPE_6(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
1092                             ARG6)                                       \
1093   builtin_types[(int) ENUM]                                             \
1094     = build_function_type                                               \
1095       (builtin_types[(int) RETURN],                                     \
1096        tree_cons (NULL_TREE,                                            \
1097                   builtin_types[(int) ARG1],                            \
1098                   tree_cons (NULL_TREE,                                 \
1099                              builtin_types[(int) ARG2],                 \
1100                              tree_cons                                  \
1101                              (NULL_TREE,                                \
1102                               builtin_types[(int) ARG3],                \
1103                               tree_cons                                 \
1104                               (NULL_TREE,                               \
1105                                builtin_types[(int) ARG4],               \
1106                                tree_cons (NULL_TREE,                    \
1107                                          builtin_types[(int) ARG5],     \
1108                                          tree_cons (NULL_TREE,          \
1109                                               builtin_types[(int) ARG6],\
1110                                               void_list_node)))))));
1111 #define DEF_FUNCTION_TYPE_7(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
1112                             ARG6, ARG7)                                 \
1113   builtin_types[(int) ENUM]                                             \
1114     = build_function_type                                               \
1115       (builtin_types[(int) RETURN],                                     \
1116        tree_cons (NULL_TREE,                                            \
1117                   builtin_types[(int) ARG1],                            \
1118                   tree_cons (NULL_TREE,                                 \
1119                              builtin_types[(int) ARG2],                 \
1120                              tree_cons                                  \
1121                              (NULL_TREE,                                \
1122                               builtin_types[(int) ARG3],                \
1123                               tree_cons                                 \
1124                               (NULL_TREE,                               \
1125                                builtin_types[(int) ARG4],               \
1126                                tree_cons (NULL_TREE,                    \
1127                                          builtin_types[(int) ARG5],     \
1128                                          tree_cons (NULL_TREE,          \
1129                                               builtin_types[(int) ARG6],\
1130                                          tree_cons (NULL_TREE,          \
1131                                               builtin_types[(int) ARG6], \
1132                                               void_list_node))))))));
1133 #define DEF_FUNCTION_TYPE_VAR_0(ENUM, RETURN)                           \
1134   builtin_types[(int) ENUM]                                             \
1135     = build_function_type (builtin_types[(int) RETURN], NULL_TREE);
1136 #define DEF_POINTER_TYPE(ENUM, TYPE)                    \
1137   builtin_types[(int) ENUM]                             \
1138     = build_pointer_type (builtin_types[(int) TYPE]);
1139 #include "types.def"
1140 #undef DEF_PRIMITIVE_TYPE
1141 #undef DEF_FUNCTION_TYPE_1
1142 #undef DEF_FUNCTION_TYPE_2
1143 #undef DEF_FUNCTION_TYPE_3
1144 #undef DEF_FUNCTION_TYPE_4
1145 #undef DEF_FUNCTION_TYPE_5
1146 #undef DEF_FUNCTION_TYPE_6
1147 #undef DEF_FUNCTION_TYPE_VAR_0
1148 #undef DEF_POINTER_TYPE
1149   builtin_types[(int) BT_LAST] = NULL_TREE;
1150
1151   /* Initialize synchronization builtins.  */
1152 #undef DEF_SYNC_BUILTIN
1153 #define DEF_SYNC_BUILTIN(code, name, type, attr) \
1154     gfc_define_builtin (name, builtin_types[type], code, name, \
1155                         attr == ATTR_CONST_NOTHROW_LIST);
1156 #include "../sync-builtins.def"
1157 #undef DEF_SYNC_BUILTIN
1158
1159   if (gfc_option.flag_openmp || flag_tree_parallelize_loops)
1160     {
1161 #undef DEF_GOMP_BUILTIN
1162 #define DEF_GOMP_BUILTIN(code, name, type, attr) \
1163       gfc_define_builtin ("__builtin_" name, builtin_types[type], \
1164                           code, name, attr == ATTR_CONST_NOTHROW_LIST);
1165 #include "../omp-builtins.def"
1166 #undef DEF_GOMP_BUILTIN
1167     }
1168
1169   gfc_define_builtin ("__builtin_trap", builtin_types[BT_FN_VOID],
1170                       BUILT_IN_TRAP, NULL, false);
1171   TREE_THIS_VOLATILE (built_in_decls[BUILT_IN_TRAP]) = 1;
1172
1173   gfc_define_builtin ("__emutls_get_address",
1174                       builtin_types[BT_FN_PTR_PTR], BUILT_IN_EMUTLS_GET_ADDRESS,
1175                       "__emutls_get_address", true);
1176   gfc_define_builtin ("__emutls_register_common",
1177                       builtin_types[BT_FN_VOID_PTR_WORD_WORD_PTR],
1178                       BUILT_IN_EMUTLS_REGISTER_COMMON,
1179                       "__emutls_register_common", false);
1180
1181   build_common_builtin_nodes ();
1182   targetm.init_builtins ();
1183 }
1184
1185 #undef DEFINE_MATH_BUILTIN_C
1186 #undef DEFINE_MATH_BUILTIN
1187
1188 #include "gt-fortran-f95-lang.h"
1189 #include "gtype-fortran.h"