gcc/output.h

   1 /* Declarations for insn-output.c.  These functions are defined in recog.c,
   2    final.c, and varasm.c.
   3    Copyright (C) 1987, 1991, 1994, 1997, 1998,
   4    1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
   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 2, 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 COPYING.  If not, write to the Free
  20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  21 02111-1307, USA.  */
  22
  23 #ifndef GCC_OUTPUT_H
  24 #define GCC_OUTPUT_H
  25
  26 /* Compute branch alignments based on frequency information in the CFG.  */
  27 extern void compute_alignments  PARAMS ((void));
  28
  29 /* Initialize data in final at the beginning of a compilation.  */
  30 extern void init_final          PARAMS ((const char *));
  31
  32 /* Enable APP processing of subsequent output.
  33    Used before the output from an `asm' statement.  */
  34 extern void app_enable          PARAMS ((void));
  35
  36 /* Disable APP processing of subsequent output.
  37    Called from varasm.c before most kinds of output.  */
  38 extern void app_disable         PARAMS ((void));
  39
  40 /* Return the number of slots filled in the current
  41    delayed branch sequence (we don't count the insn needing the
  42    delay slot).   Zero if not in a delayed branch sequence.  */
  43 extern int dbr_sequence_length  PARAMS ((void));
  44
  45 /* Indicate that branch shortening hasn't yet been done.  */
  46 extern void init_insn_lengths   PARAMS ((void));
  47
  48 /* Obtain the current length of an insn.  If branch shortening has been done,
  49    get its actual length.  Otherwise, get its maximum length.  */
  50 extern int get_attr_length      PARAMS ((rtx));
  51
  52 /* Make a pass over all insns and compute their actual lengths by shortening
  53    any branches of variable length if possible.  */
  54 extern void shorten_branches    PARAMS ((rtx));
  55
  56 /* Output assembler code for the start of a function,
  57    and initialize some of the variables in this file
  58    for the new function.  The label for the function and associated
  59    assembler pseudo-ops have already been output in
  60    `assemble_start_function'.  */
  61 extern void final_start_function  PARAMS ((rtx, FILE *, int));
  62
  63 /* Output assembler code for the end of a function.
  64    For clarity, args are same as those of `final_start_function'
  65    even though not all of them are needed.  */
  66 extern void final_end_function  PARAMS ((void));
  67
  68 /* Output assembler code for some insns: all or part of a function.  */
  69 extern void final               PARAMS ((rtx, FILE *, int, int));
  70
  71 /* The final scan for one insn, INSN.  Args are same as in `final', except
  72    that INSN is the insn being scanned.  Value returned is the next insn to
  73    be scanned.  */
  74 extern rtx final_scan_insn      PARAMS ((rtx, FILE *, int, int, int));
  75
  76 /* Replace a SUBREG with a REG or a MEM, based on the thing it is a
  77    subreg of.  */
  78 extern rtx alter_subreg PARAMS ((rtx *));
  79
  80 /* Report inconsistency between the assembler template and the operands.
  81    In an `asm', it's the user's fault; otherwise, the compiler's fault.  */
  82 extern void output_operand_lossage  PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1;
  83
  84 /* Output a string of assembler code, substituting insn operands.
  85    Defined in final.c.  */
  86 extern void output_asm_insn     PARAMS ((const char *, rtx *));
  87
  88 /* Compute a worst-case reference address of a branch so that it
  89    can be safely used in the presence of aligned labels.
  90    Defined in final.c.  */
  91 extern int insn_current_reference_address       PARAMS ((rtx));
  92
  93 /* Find the alignment associated with a CODE_LABEL.
  94    Defined in final.c.  */
  95 extern int label_to_alignment   PARAMS ((rtx));
  96
  97 /* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol.  */
  98 extern void output_asm_label    PARAMS ((rtx));
  99
 100 /* Print a memory reference operand for address X
 101    using machine-dependent assembler syntax.  */
 102 extern void output_address      PARAMS ((rtx));
 103
 104 /* Print an integer constant expression in assembler syntax.
 105    Addition and subtraction are the only arithmetic
 106    that may appear in these expressions.  */
 107 extern void output_addr_const PARAMS ((FILE *, rtx));
 108
 109 /* Output a string of assembler code, substituting numbers, strings
 110    and fixed syntactic prefixes.  */
 111 #if GCC_VERSION >= 3004
 112 #define ATTRIBUTE_ASM_FPRINTF(m, n) __attribute__ ((__format__ (__asm_fprintf__, m, n))) ATTRIBUTE_NONNULL(m)
 113 /* This is a magic identifier which allows GCC to figure out the type
 114    of HOST_WIDE_INT for %wd specifier checks.  You must issue this
 115    typedef before using the __asm_fprintf__ format attribute.  */
 116 typedef HOST_WIDE_INT __gcc_host_wide_int__;
 117 #else
 118 #define ATTRIBUTE_ASM_FPRINTF(m, n) ATTRIBUTE_NONNULL(m)
 119 #endif
 120
 121 extern void asm_fprintf         PARAMS ((FILE *file, const char *p, ...)) ATTRIBUTE_ASM_FPRINTF(2, 3);
 122
 123 /* Split up a CONST_DOUBLE or integer constant rtx into two rtx's for single
 124    words.  */
 125 extern void split_double        PARAMS ((rtx, rtx *, rtx *));
 126
 127 /* Return nonzero if this function has no function calls.  */
 128 extern int leaf_function_p      PARAMS ((void));
 129
 130 /* Return 1 if branch is a forward branch.
 131    Uses insn_shuid array, so it works only in the final pass.  May be used by
 132    output templates to add branch prediction hints, for example.  */
 133 extern int final_forward_branch_p PARAMS ((rtx));
 134
 135 /* Return 1 if this function uses only the registers that can be
 136    safely renumbered.  */
 137 extern int only_leaf_regs_used  PARAMS ((void));
 138
 139 /* Scan IN_RTX and its subexpressions, and renumber all regs into those
 140    available in leaf functions.  */
 141 extern void leaf_renumber_regs_insn PARAMS ((rtx));
 142
 143 /* Locate the proper template for the given insn-code.  */
 144 extern const char *get_insn_template PARAMS ((int, rtx));
 145
 146 /* Add function NAME to the weak symbols list.  VALUE is a weak alias
 147    associated with NAME.  */
 148 extern int add_weak PARAMS ((tree, const char *, const char *));
 149
 150 /* Functions in flow.c */
 151 extern void allocate_for_life_analysis  PARAMS ((void));
 152 extern int regno_uninitialized          PARAMS ((unsigned int));
 153 extern int regno_clobbered_at_setjmp    PARAMS ((int));
 154 extern void find_basic_blocks           PARAMS ((rtx, int, FILE *));
 155 extern bool cleanup_cfg                 PARAMS ((int));
 156 extern bool delete_unreachable_blocks   PARAMS ((void));
 157 extern void check_function_return_warnings PARAMS ((void));
 158
 159 /* Functions in varasm.c.  */
 160
 161 /* Tell assembler to switch to text section.  */
 162 extern void text_section                PARAMS ((void));
 163
 164 /* Tell assembler to switch to data section.  */
 165 extern void data_section                PARAMS ((void));
 166
 167 /* Tell assembler to switch to read-only data section.  This is normally
 168    the text section.  */
 169 extern void readonly_data_section       PARAMS ((void));
 170
 171 /* Determine if we're in the text section.  */
 172 extern int in_text_section              PARAMS ((void));
 173
 174 #ifdef CTORS_SECTION_ASM_OP
 175 extern void ctors_section PARAMS ((void));
 176 #endif
 177
 178 #ifdef DTORS_SECTION_ASM_OP
 179 extern void dtors_section PARAMS ((void));
 180 #endif
 181
 182 #ifdef BSS_SECTION_ASM_OP
 183 extern void bss_section PARAMS ((void));
 184 #endif
 185
 186 #ifdef INIT_SECTION_ASM_OP
 187 extern void init_section PARAMS ((void));
 188 #endif
 189
 190 #ifdef FINI_SECTION_ASM_OP
 191 extern void fini_section PARAMS ((void));
 192 #endif
 193
 194 #ifdef EXPORTS_SECTION_ASM_OP
 195 extern void exports_section PARAMS ((void));
 196 #endif
 197
 198 #ifdef DRECTVE_SECTION_ASM_OP
 199 extern void drectve_section PARAMS ((void));
 200 #endif
 201
 202 #ifdef SDATA_SECTION_ASM_OP
 203 extern void sdata_section PARAMS ((void));
 204 #endif
 205
 206 /* Tell assembler to change to section NAME for DECL.
 207    If DECL is NULL, just switch to section NAME.
 208    If NAME is NULL, get the name from DECL.
 209    If RELOC is 1, the initializer for DECL contains relocs.  */
 210 extern void named_section               PARAMS ((tree, const char *, int));
 211
 212 /* Tell assembler to switch to the section for function DECL.  */
 213 extern void function_section            PARAMS ((tree));
 214
 215 /* Tell assembler to switch to the section for string merging.  */
 216 extern void mergeable_string_section    PARAMS ((tree, unsigned HOST_WIDE_INT,
 217                                                  unsigned int));
 218
 219 /* Tell assembler to switch to the section for constant merging.  */
 220 extern void mergeable_constant_section  PARAMS ((enum machine_mode,
 221                                                  unsigned HOST_WIDE_INT,
 222                                                  unsigned int));
 223
 224 /* Declare DECL to be a weak symbol.  */
 225 extern void declare_weak                PARAMS ((tree));
 226 /* Merge weak status.  */
 227 extern void merge_weak                  PARAMS ((tree, tree));
 228
 229 /* Emit any pending weak declarations.  */
 230 extern void weak_finish                 PARAMS ((void));
 231
 232 /* Decode an `asm' spec for a declaration as a register name.
 233    Return the register number, or -1 if nothing specified,
 234    or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized,
 235    or -3 if ASMSPEC is `cc' and is not recognized,
 236    or -4 if ASMSPEC is `memory' and is not recognized.
 237    Accept an exact spelling or a decimal number.
 238    Prefixes such as % are optional.  */
 239 extern int decode_reg_name              PARAMS ((const char *));
 240
 241 /* Make the rtl for variable VAR be volatile.
 242    Use this only for static variables.  */
 243 extern void make_var_volatile           PARAMS ((tree));
 244
 245 extern void assemble_alias              PARAMS ((tree, tree));
 246
 247 extern void default_assemble_visibility PARAMS ((tree, int));
 248
 249 /* Output a string of literal assembler code
 250    for an `asm' keyword used between functions.  */
 251 extern void assemble_asm                PARAMS ((tree));
 252
 253 /* Output assembler code for the constant pool of a function and associated
 254    with defining the name of the function.  DECL describes the function.
 255    NAME is the function's name.  For the constant pool, we use the current
 256    constant pool data.  */
 257 extern void assemble_start_function     PARAMS ((tree, const char *));
 258
 259 /* Output assembler code associated with defining the size of the
 260    function.  DECL describes the function.  NAME is the function's name.  */
 261 extern void assemble_end_function       PARAMS ((tree, const char *));
 262
 263 /* Assemble everything that is needed for a variable or function declaration.
 264    Not used for automatic variables, and not used for function definitions.
 265    Should not be called for variables of incomplete structure type.
 266
 267    TOP_LEVEL is nonzero if this variable has file scope.
 268    AT_END is nonzero if this is the special handling, at end of compilation,
 269    to define things that have had only tentative definitions.
 270    DONT_OUTPUT_DATA if nonzero means don't actually output the
 271    initial value (that will be done by the caller).  */
 272 extern void assemble_variable           PARAMS ((tree, int, int, int));
 273
 274 /* Output something to declare an external symbol to the assembler.
 275    (Most assemblers don't need this, so we normally output nothing.)
 276    Do nothing if DECL is not external.  */
 277 extern void assemble_external           PARAMS ((tree));
 278
 279 /* Assemble code to leave SIZE bytes of zeros.  */
 280 extern void assemble_zeros              PARAMS ((unsigned HOST_WIDE_INT));
 281
 282 /* Assemble an alignment pseudo op for an ALIGN-bit boundary.  */
 283 extern void assemble_align              PARAMS ((int));
 284 extern void assemble_eh_align           PARAMS ((int));
 285
 286 /* Assemble a string constant with the specified C string as contents.  */
 287 extern void assemble_string             PARAMS ((const char *, int));
 288
 289 /* Similar, for calling a library function FUN.  */
 290 extern void assemble_external_libcall   PARAMS ((rtx));
 291
 292 /* Assemble a label named NAME.  */
 293 extern void assemble_label              PARAMS ((const char *));
 294 extern void assemble_eh_label           PARAMS ((const char *));
 295
 296 /* Output to FILE a reference to the assembler name of a C-level name NAME.
 297    If NAME starts with a *, the rest of NAME is output verbatim.
 298    Otherwise NAME is transformed in an implementation-defined way
 299    (usually by the addition of an underscore).
 300    Many macros in the tm file are defined to call this function.  */
 301 extern void assemble_name               PARAMS ((FILE *, const char *));
 302
 303 /* Return the assembler directive for creating a given kind of integer
 304    object.  SIZE is the number of bytes in the object and ALIGNED_P
 305    indicates whether it is known to be aligned.  Return NULL if the
 306    assembly dialect has no such directive.
 307
 308    The returned string should be printed at the start of a new line and
 309    be followed immediately by the object's initial value.  */
 310 extern const char *integer_asm_op       PARAMS ((int, int));
 311
 312 /* Use directive OP to assemble an integer object X.  Print OP at the
 313    start of the line, followed immediately by the value of X.  */
 314 extern void assemble_integer_with_op    PARAMS ((const char *, rtx));
 315
 316 /* The default implementation of the asm_out.integer target hook.  */
 317 extern bool default_assemble_integer    PARAMS ((rtx, unsigned int, int));
 318
 319 /* Assemble the integer constant X into an object of SIZE bytes.  ALIGN is
 320    the alignment of the integer in bits.  Return 1 if we were able to output
 321    the constant, otherwise 0.  If FORCE is nonzero, abort if we can't output
 322    the constant.  */
 323 extern bool assemble_integer            PARAMS ((rtx, unsigned, unsigned, int));
 324
 325 /* An interface to assemble_integer for the common case in which a value is
 326    fully aligned and must be printed.  VALUE is the value of the integer
 327    object and SIZE is the number of bytes it contains.  */
 328 #define assemble_aligned_integer(SIZE, VALUE) \
 329   assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1)
 330
 331 #ifdef REAL_VALUE_TYPE_SIZE
 332 /* Assemble the floating-point constant D into an object of size MODE.  */
 333 extern void assemble_real               PARAMS ((REAL_VALUE_TYPE,
 334                                                  enum machine_mode,
 335                                                  unsigned));
 336 #endif
 337
 338 /* Return the size of the constant pool.  */
 339 extern int get_pool_size                PARAMS ((void));
 340
 341 #ifdef HAVE_peephole
 342 extern rtx peephole                     PARAMS ((rtx));
 343 #endif
 344
 345 /* Write all the constants in the constant pool.  */
 346 extern void output_constant_pool        PARAMS ((const char *, tree));
 347
 348 /* Return nonzero if VALUE is a valid constant-valued expression
 349    for use in initializing a static variable; one that can be an
 350    element of a "constant" initializer.
 351
 352    Return null_pointer_node if the value is absolute;
 353    if it is relocatable, return the variable that determines the relocation.
 354    We assume that VALUE has been folded as much as possible;
 355    therefore, we do not need to check for such things as
 356    arithmetic-combinations of integers.  */
 357 extern tree initializer_constant_valid_p        PARAMS ((tree, tree));
 358
 359 /* Output assembler code for constant EXP to FILE, with no label.
 360    This includes the pseudo-op such as ".int" or ".byte", and a newline.
 361    Assumes output_addressed_constants has been done on EXP already.
 362
 363    Generate exactly SIZE bytes of assembler data, padding at the end
 364    with zeros if necessary.  SIZE must always be specified.
 365
 366    ALIGN is the alignment in bits that may be assumed for the data.  */
 367 extern void output_constant             PARAMS ((tree, unsigned HOST_WIDE_INT,
 368                                                  unsigned int));
 369
 370 /* When outputting delayed branch sequences, this rtx holds the
 371    sequence being output.  It is null when no delayed branch
 372    sequence is being output, so it can be used as a test in the
 373    insn output code.
 374
 375    This variable is defined  in final.c.  */
 376 extern rtx final_sequence;
 377
 378 /* The line number of the beginning of the current function.  Various
 379    md code needs this so that it can output relative linenumbers.  */
 380
 381 #ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers.  */
 382 extern int sdb_begin_function_line;
 383 #endif
 384
 385 /* File in which assembler code is being written.  */
 386
 387 #ifdef BUFSIZ
 388 extern FILE *asm_out_file;
 389 #endif
 390
 391 /* The first global object in the file.  */
 392 extern const char *first_global_object_name;
 393
 394 /* The first weak object in the file.  */
 395 extern const char *weak_global_object_name;
 396
 397 /* Nonzero if function being compiled doesn't contain any calls
 398    (ignoring the prologue and epilogue).  This is set prior to
 399    local register allocation and is valid for the remaining
 400    compiler passes.  */
 401
 402 extern int current_function_is_leaf;
 403
 404 /* Nonzero if function being compiled doesn't contain any instructions
 405    that can throw an exception.  This is set prior to final.  */
 406
 407 extern int current_function_nothrow;
 408
 409 /* Nonzero if function being compiled doesn't modify the stack pointer
 410    (ignoring the prologue and epilogue).  This is only valid after
 411    life_analysis has run.  */
 412
 413 extern int current_function_sp_is_unchanging;
 414
 415 /* Nonzero if the function being compiled is a leaf function which only
 416    uses leaf registers.  This is valid after reload (specifically after
 417    sched2) and is useful only if the port defines LEAF_REGISTERS.  */
 418
 419 extern int current_function_uses_only_leaf_regs;
 420
 421 /* Default file in which to dump debug output.  */
 422
 423 #ifdef BUFSIZ
 424 extern FILE *rtl_dump_file;
 425 #endif
 426
 427 /* Nonnull if the insn currently being emitted was a COND_EXEC pattern.  */
 428 extern struct rtx_def *current_insn_predicate;
 429
 430 /* Last insn processed by final_scan_insn.  */
 431 extern struct rtx_def *current_output_insn;
 432
 433 /* Nonzero while outputting an `asm' with operands.
 434    This means that inconsistencies are the user's fault, so don't abort.
 435    The precise value is the insn being output, to pass to error_for_asm.  */
 436 extern rtx this_is_asm_operands;
 437
 438 /* Decide whether DECL needs to be in a writable section.
 439    RELOC is the same as for SELECT_SECTION.  */
 440 extern bool decl_readonly_section PARAMS ((tree, int));
 441 extern bool decl_readonly_section_1 PARAMS ((tree, int, int));
 442
 443 /* User label prefix in effect for this compilation.  */
 444 extern const char *user_label_prefix;
 445
 446 /* Default target function prologue and epilogue assembler output.  */
 447 extern void default_function_pro_epilogue PARAMS ((FILE *, HOST_WIDE_INT));
 448
 449 /* Tell assembler to switch to the section for the exception table.  */
 450 extern void default_exception_section   PARAMS ((void));
 451
 452 /* Tell assembler to switch to the section for the EH frames.  */
 453 extern void default_eh_frame_section    PARAMS ((void));
 454
 455 /* Default target hook that outputs nothing to a stream.  */
 456 extern void no_asm_to_stream PARAMS ((FILE *));
 457
 458 /* Flags controlling properties of a section.  */
 459 #define SECTION_ENTSIZE  0x000ff        /* entity size in section */
 460 #define SECTION_CODE     0x00100        /* contains code */
 461 #define SECTION_WRITE    0x00200        /* data is writable */
 462 #define SECTION_DEBUG    0x00400        /* contains debug data */
 463 #define SECTION_LINKONCE 0x00800        /* is linkonce */
 464 #define SECTION_SMALL    0x01000        /* contains "small data" */
 465 #define SECTION_BSS      0x02000        /* contains zeros only */
 466 #define SECTION_FORGET   0x04000        /* forget that we've entered the section */
 467 #define SECTION_MERGE    0x08000        /* contains mergeable data */
 468 #define SECTION_STRINGS  0x10000        /* contains zero terminated strings without
 469                                            embedded zeros */
 470 #define SECTION_OVERRIDE 0x20000        /* allow override of default flags */
 471 #define SECTION_TLS      0x40000        /* contains thread-local storage */
 472 #define SECTION_NOTYPE   0x80000        /* don't output @progbits */
 473 #define SECTION_MACH_DEP 0x100000       /* subsequent bits reserved for target */
 474
 475 extern unsigned int get_named_section_flags PARAMS ((const char *));
 476 extern bool set_named_section_flags     PARAMS ((const char *, unsigned int));
 477 extern void named_section_flags         PARAMS ((const char *, unsigned int));
 478 extern bool named_section_first_declaration PARAMS((const char *));
 479
 480 union tree_node;
 481 extern unsigned int default_section_type_flags PARAMS ((union tree_node *,
 482                                                         const char *, int));
 483 extern unsigned int default_section_type_flags_1 PARAMS ((union tree_node *,
 484                                                           const char *,
 485                                                           int, int));
 486
 487 extern void default_no_named_section PARAMS ((const char *, unsigned int));
 488 extern void default_elf_asm_named_section PARAMS ((const char *, unsigned int));
 489 extern void default_coff_asm_named_section PARAMS ((const char *,
 490                                                     unsigned int));
 491 extern void default_pe_asm_named_section PARAMS ((const char *, unsigned int));
 492
 493 extern void default_stabs_asm_out_destructor PARAMS ((struct rtx_def *, int));
 494 extern void default_named_section_asm_out_destructor PARAMS ((struct rtx_def *,
 495                                                               int));
 496 extern void default_dtor_section_asm_out_destructor PARAMS ((struct rtx_def *,
 497                                                              int));
 498 extern void default_stabs_asm_out_constructor PARAMS ((struct rtx_def *, int));
 499 extern void default_named_section_asm_out_constructor PARAMS ((struct rtx_def *,
 500                                                                int));
 501 extern void default_ctor_section_asm_out_constructor PARAMS ((struct rtx_def *,
 502                                                               int));
 503
 504 extern void default_select_section PARAMS ((tree, int,
 505                                             unsigned HOST_WIDE_INT));
 506 extern void default_elf_select_section PARAMS ((tree, int,
 507                                                 unsigned HOST_WIDE_INT));
 508 extern void default_elf_select_section_1 PARAMS ((tree, int,
 509                                                   unsigned HOST_WIDE_INT, int));
 510 extern void default_unique_section PARAMS ((tree, int));
 511 extern void default_unique_section_1 PARAMS ((tree, int, int));
 512 extern void default_select_rtx_section PARAMS ((enum machine_mode, rtx,
 513                                                 unsigned HOST_WIDE_INT));
 514 extern void default_elf_select_rtx_section PARAMS ((enum machine_mode, rtx,
 515                                                     unsigned HOST_WIDE_INT));
 516 extern void default_encode_section_info PARAMS ((tree, rtx, int));
 517 extern const char *default_strip_name_encoding PARAMS ((const char *));
 518 extern bool default_binds_local_p PARAMS ((tree));
 519 extern bool default_binds_local_p_1 PARAMS ((tree, int));
 520 extern void default_globalize_label PARAMS ((FILE *, const char *));
 521 extern void default_internal_label PARAMS ((FILE *, const char *, unsigned long));
 522 extern void file_end_indicate_exec_stack PARAMS ((void));
 523 extern bool default_valid_pointer_mode PARAMS ((enum machine_mode));
 524
 525 /* Emit data for vtable gc for GNU binutils.  */
 526 extern void assemble_vtable_entry PARAMS ((struct rtx_def *, HOST_WIDE_INT));
 527 extern void assemble_vtable_inherit PARAMS ((struct rtx_def *,
 528                                              struct rtx_def *));
 529
 530 extern int default_address_cost PARAMS ((rtx));
 531
 532 #endif /* ! GCC_OUTPUT_H */