gcc/optabs.h

   1 /* Definitions for code generation pass of GNU compiler.
   2    Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  20 Boston, MA 02110-1301, USA.  */
  21
  22 #ifndef GCC_OPTABS_H
  23 #define GCC_OPTABS_H
  24
  25 #include "insn-codes.h"
  26
  27 /* Optabs are tables saying how to generate insn bodies
  28    for various machine modes and numbers of operands.
  29    Each optab applies to one operation.
  30
  31    For example, add_optab applies to addition.
  32
  33    The insn_code slot is the enum insn_code that says how to
  34    generate an insn for this operation on a particular machine mode.
  35    It is CODE_FOR_nothing if there is no such insn on the target machine.
  36
  37    The `lib_call' slot is the name of the library function that
  38    can be used to perform the operation.
  39
  40    A few optabs, such as move_optab and cmp_optab, are used
  41    by special code.  */
  42
  43 struct optab_handlers GTY(())
  44 {
  45   enum insn_code insn_code;
  46   rtx libfunc;
  47 };
  48
  49 struct optab GTY(())
  50 {
  51   enum rtx_code code;
  52   struct optab_handlers handlers[NUM_MACHINE_MODES];
  53 };
  54 typedef struct optab * optab;
  55
  56 /* A convert_optab is for some sort of conversion operation between
  57    modes.  The first array index is the destination mode, the second
  58    is the source mode.  */
  59 struct convert_optab GTY(())
  60 {
  61   enum rtx_code code;
  62   struct optab_handlers handlers[NUM_MACHINE_MODES][NUM_MACHINE_MODES];
  63 };
  64 typedef struct convert_optab *convert_optab;
  65
  66 /* Given an enum insn_code, access the function to construct
  67    the body of that kind of insn.  */
  68 #define GEN_FCN(CODE) (insn_data[CODE].genfun)
  69
  70 /* Enumeration of valid indexes into optab_table.  */
  71 enum optab_index
  72 {
  73   OTI_add,
  74   OTI_addv,
  75   OTI_sub,
  76   OTI_subv,
  77
  78   /* Signed and fp multiply */
  79   OTI_smul,
  80   OTI_smulv,
  81   /* Signed multiply, return high word */
  82   OTI_smul_highpart,
  83   OTI_umul_highpart,
  84   /* Signed multiply with result one machine mode wider than args */
  85   OTI_smul_widen,
  86   OTI_umul_widen,
  87   /* Widening multiply of one unsigned and one signed operand.  */
  88   OTI_usmul_widen,
  89
  90   /* Signed divide */
  91   OTI_sdiv,
  92   OTI_sdivv,
  93   /* Signed divide-and-remainder in one */
  94   OTI_sdivmod,
  95   OTI_udiv,
  96   OTI_udivmod,
  97   /* Signed remainder */
  98   OTI_smod,
  99   OTI_umod,
 100   /* Floating point remainder functions */
 101   OTI_fmod,
 102   OTI_remainder,
 103   /* Convert float to integer in float fmt */
 104   OTI_ftrunc,
 105
 106   /* Logical and */
 107   OTI_and,
 108   /* Logical or */
 109   OTI_ior,
 110   /* Logical xor */
 111   OTI_xor,
 112
 113   /* Arithmetic shift left */
 114   OTI_ashl,
 115   /* Logical shift right */
 116   OTI_lshr,
 117   /* Arithmetic shift right */
 118   OTI_ashr,
 119   /* Rotate left */
 120   OTI_rotl,
 121   /* Rotate right */
 122   OTI_rotr,
 123   /* Signed and floating-point minimum value */
 124   OTI_smin,
 125   /* Signed and floating-point maximum value */
 126   OTI_smax,
 127   /* Unsigned minimum value */
 128   OTI_umin,
 129   /* Unsigned maximum value */
 130   OTI_umax,
 131   /* Power */
 132   OTI_pow,
 133   /* Arc tangent of y/x */
 134   OTI_atan2,
 135
 136   /* Move instruction.  */
 137   OTI_mov,
 138   /* Move, preserving high part of register.  */
 139   OTI_movstrict,
 140   /* Move, with a misaligned memory.  */
 141   OTI_movmisalign,
 142
 143   /* Unary operations */
 144   /* Negation */
 145   OTI_neg,
 146   OTI_negv,
 147   /* Abs value */
 148   OTI_abs,
 149   OTI_absv,
 150   /* Byteswap */
 151   OTI_bswap,
 152   /* Bitwise not */
 153   OTI_one_cmpl,
 154   /* Bit scanning and counting */
 155   OTI_ffs,
 156   OTI_clz,
 157   OTI_ctz,
 158   OTI_popcount,
 159   OTI_parity,
 160   /* Square root */
 161   OTI_sqrt,
 162   /* Sine-Cosine */
 163   OTI_sincos,
 164   /* Sine */
 165   OTI_sin,
 166   /* Inverse sine */
 167   OTI_asin,
 168   /* Cosine */
 169   OTI_cos,
 170   /* Inverse cosine */
 171   OTI_acos,
 172   /* Exponential */
 173   OTI_exp,
 174   /* Base-10 Exponential */
 175   OTI_exp10,
 176   /* Base-2 Exponential */
 177   OTI_exp2,
 178   /* Exponential - 1*/
 179   OTI_expm1,
 180   /* Load exponent of a floating point number */
 181   OTI_ldexp,
 182   /* Multiply floating-point number by integral power of radix */
 183   OTI_scalb,
 184   /* Radix-independent exponent */
 185   OTI_logb,
 186   OTI_ilogb,
 187   /* Natural Logarithm */
 188   OTI_log,
 189   /* Base-10 Logarithm */
 190   OTI_log10,
 191   /* Base-2 Logarithm */
 192   OTI_log2,
 193   /* logarithm of 1 plus argument */
 194   OTI_log1p,
 195   /* Rounding functions */
 196   OTI_floor,
 197   OTI_ceil,
 198   OTI_btrunc,
 199   OTI_round,
 200   OTI_nearbyint,
 201   OTI_rint,
 202   /* Tangent */
 203   OTI_tan,
 204   /* Inverse tangent */
 205   OTI_atan,
 206   /* Copy sign */
 207   OTI_copysign,
 208
 209   /* Test for infinite value */
 210   OTI_isinf,
 211
 212   /* Compare insn; two operands.  */
 213   OTI_cmp,
 214   /* Used only for libcalls for unsigned comparisons.  */
 215   OTI_ucmp,
 216   /* tst insn; compare one operand against 0 */
 217   OTI_tst,
 218
 219   /* Floating point comparison optabs - used primarily for libfuncs */
 220   OTI_eq,
 221   OTI_ne,
 222   OTI_gt,
 223   OTI_ge,
 224   OTI_lt,
 225   OTI_le,
 226   OTI_unord,
 227
 228   /* String length */
 229   OTI_strlen,
 230
 231   /* Combined compare & jump/store flags/move operations.  */
 232   OTI_cbranch,
 233   OTI_cmov,
 234   OTI_cstore,
 235
 236   /* Push instruction.  */
 237   OTI_push,
 238
 239   /* Conditional add instruction.  */
 240   OTI_addcc,
 241
 242   /* Reduction operations on a vector operand.  */
 243   OTI_reduc_smax,
 244   OTI_reduc_umax,
 245   OTI_reduc_smin,
 246   OTI_reduc_umin,
 247   OTI_reduc_splus,
 248   OTI_reduc_uplus,
 249
 250   /* Summation, with result machine mode one or more wider than args.  */
 251   OTI_ssum_widen,
 252   OTI_usum_widen,
 253
 254   /* Dot product, with result machine mode one or more wider than args.  */
 255   OTI_sdot_prod,
 256   OTI_udot_prod,
 257
 258   /* Set specified field of vector operand.  */
 259   OTI_vec_set,
 260   /* Extract specified field of vector operand.  */
 261   OTI_vec_extract,
 262   /* Extract even/odd fields of vector operands.  */
 263   OTI_vec_extract_even,
 264   OTI_vec_extract_odd,
 265   /* Interleave fields of vector operands.  */
 266   OTI_vec_interleave_high,
 267   OTI_vec_interleave_low,
 268   /* Initialize vector operand.  */
 269   OTI_vec_init,
 270   /* Whole vector shift. The shift amount is in bits.  */
 271   OTI_vec_shl,
 272   OTI_vec_shr,
 273   /* Extract specified elements from vectors, for vector load.  */
 274   OTI_vec_realign_load,
 275   /* Widening multiplication.
 276      The high/low part of the resulting vector of products is returned.  */
 277   OTI_vec_widen_umult_hi,
 278   OTI_vec_widen_umult_lo,
 279   OTI_vec_widen_smult_hi,
 280   OTI_vec_widen_smult_lo,
 281   /* Extract and widen the high/low part of a vector of signed/unsigned
 282      elements.  */
 283   OTI_vec_unpacks_hi,
 284   OTI_vec_unpacks_lo,
 285   OTI_vec_unpacku_hi,
 286   OTI_vec_unpacku_lo,
 287   /* Narrow (demote) and merge the elements of two vectors.  */
 288   OTI_vec_pack_mod,
 289   OTI_vec_pack_usat,
 290   OTI_vec_pack_ssat,
 291
 292   /* Perform a raise to the power of integer.  */
 293   OTI_powi,
 294
 295   OTI_MAX
 296 };
 297
 298 extern GTY(()) optab optab_table[OTI_MAX];
 299
 300 #define add_optab (optab_table[OTI_add])
 301 #define sub_optab (optab_table[OTI_sub])
 302 #define smul_optab (optab_table[OTI_smul])
 303 #define addv_optab (optab_table[OTI_addv])
 304 #define subv_optab (optab_table[OTI_subv])
 305 #define smul_highpart_optab (optab_table[OTI_smul_highpart])
 306 #define umul_highpart_optab (optab_table[OTI_umul_highpart])
 307 #define smul_widen_optab (optab_table[OTI_smul_widen])
 308 #define umul_widen_optab (optab_table[OTI_umul_widen])
 309 #define usmul_widen_optab (optab_table[OTI_usmul_widen])
 310 #define sdiv_optab (optab_table[OTI_sdiv])
 311 #define smulv_optab (optab_table[OTI_smulv])
 312 #define sdivv_optab (optab_table[OTI_sdivv])
 313 #define sdivmod_optab (optab_table[OTI_sdivmod])
 314 #define udiv_optab (optab_table[OTI_udiv])
 315 #define udivmod_optab (optab_table[OTI_udivmod])
 316 #define smod_optab (optab_table[OTI_smod])
 317 #define umod_optab (optab_table[OTI_umod])
 318 #define fmod_optab (optab_table[OTI_fmod])
 319 #define remainder_optab (optab_table[OTI_remainder])
 320 #define ftrunc_optab (optab_table[OTI_ftrunc])
 321 #define and_optab (optab_table[OTI_and])
 322 #define ior_optab (optab_table[OTI_ior])
 323 #define xor_optab (optab_table[OTI_xor])
 324 #define ashl_optab (optab_table[OTI_ashl])
 325 #define lshr_optab (optab_table[OTI_lshr])
 326 #define ashr_optab (optab_table[OTI_ashr])
 327 #define rotl_optab (optab_table[OTI_rotl])
 328 #define rotr_optab (optab_table[OTI_rotr])
 329 #define smin_optab (optab_table[OTI_smin])
 330 #define smax_optab (optab_table[OTI_smax])
 331 #define umin_optab (optab_table[OTI_umin])
 332 #define umax_optab (optab_table[OTI_umax])
 333 #define pow_optab (optab_table[OTI_pow])
 334 #define atan2_optab (optab_table[OTI_atan2])
 335
 336 #define mov_optab (optab_table[OTI_mov])
 337 #define movstrict_optab (optab_table[OTI_movstrict])
 338 #define movmisalign_optab (optab_table[OTI_movmisalign])
 339
 340 #define neg_optab (optab_table[OTI_neg])
 341 #define negv_optab (optab_table[OTI_negv])
 342 #define abs_optab (optab_table[OTI_abs])
 343 #define absv_optab (optab_table[OTI_absv])
 344 #define one_cmpl_optab (optab_table[OTI_one_cmpl])
 345 #define bswap_optab (optab_table[OTI_bswap])
 346 #define ffs_optab (optab_table[OTI_ffs])
 347 #define clz_optab (optab_table[OTI_clz])
 348 #define ctz_optab (optab_table[OTI_ctz])
 349 #define popcount_optab (optab_table[OTI_popcount])
 350 #define parity_optab (optab_table[OTI_parity])
 351 #define sqrt_optab (optab_table[OTI_sqrt])
 352 #define sincos_optab (optab_table[OTI_sincos])
 353 #define sin_optab (optab_table[OTI_sin])
 354 #define asin_optab (optab_table[OTI_asin])
 355 #define cos_optab (optab_table[OTI_cos])
 356 #define acos_optab (optab_table[OTI_acos])
 357 #define exp_optab (optab_table[OTI_exp])
 358 #define exp10_optab (optab_table[OTI_exp10])
 359 #define exp2_optab (optab_table[OTI_exp2])
 360 #define expm1_optab (optab_table[OTI_expm1])
 361 #define ldexp_optab (optab_table[OTI_ldexp])
 362 #define scalb_optab (optab_table[OTI_scalb])
 363 #define logb_optab (optab_table[OTI_logb])
 364 #define ilogb_optab (optab_table[OTI_ilogb])
 365 #define log_optab (optab_table[OTI_log])
 366 #define log10_optab (optab_table[OTI_log10])
 367 #define log2_optab (optab_table[OTI_log2])
 368 #define log1p_optab (optab_table[OTI_log1p])
 369 #define floor_optab (optab_table[OTI_floor])
 370 #define ceil_optab (optab_table[OTI_ceil])
 371 #define btrunc_optab (optab_table[OTI_btrunc])
 372 #define round_optab (optab_table[OTI_round])
 373 #define nearbyint_optab (optab_table[OTI_nearbyint])
 374 #define rint_optab (optab_table[OTI_rint])
 375 #define tan_optab (optab_table[OTI_tan])
 376 #define atan_optab (optab_table[OTI_atan])
 377 #define copysign_optab (optab_table[OTI_copysign])
 378
 379 #define isinf_optab (optab_table[OTI_isinf])
 380
 381 #define cmp_optab (optab_table[OTI_cmp])
 382 #define ucmp_optab (optab_table[OTI_ucmp])
 383 #define tst_optab (optab_table[OTI_tst])
 384
 385 #define eq_optab (optab_table[OTI_eq])
 386 #define ne_optab (optab_table[OTI_ne])
 387 #define gt_optab (optab_table[OTI_gt])
 388 #define ge_optab (optab_table[OTI_ge])
 389 #define lt_optab (optab_table[OTI_lt])
 390 #define le_optab (optab_table[OTI_le])
 391 #define unord_optab (optab_table[OTI_unord])
 392
 393 #define strlen_optab (optab_table[OTI_strlen])
 394
 395 #define cbranch_optab (optab_table[OTI_cbranch])
 396 #define cmov_optab (optab_table[OTI_cmov])
 397 #define cstore_optab (optab_table[OTI_cstore])
 398 #define push_optab (optab_table[OTI_push])
 399 #define addcc_optab (optab_table[OTI_addcc])
 400
 401 #define reduc_smax_optab (optab_table[OTI_reduc_smax])
 402 #define reduc_umax_optab (optab_table[OTI_reduc_umax])
 403 #define reduc_smin_optab (optab_table[OTI_reduc_smin])
 404 #define reduc_umin_optab (optab_table[OTI_reduc_umin])
 405 #define reduc_splus_optab (optab_table[OTI_reduc_splus])
 406 #define reduc_uplus_optab (optab_table[OTI_reduc_uplus])
 407
 408 #define ssum_widen_optab (optab_table[OTI_ssum_widen])
 409 #define usum_widen_optab (optab_table[OTI_usum_widen])
 410 #define sdot_prod_optab (optab_table[OTI_sdot_prod])
 411 #define udot_prod_optab (optab_table[OTI_udot_prod])
 412
 413 #define vec_set_optab (optab_table[OTI_vec_set])
 414 #define vec_extract_optab (optab_table[OTI_vec_extract])
 415 #define vec_extract_even_optab (optab_table[OTI_vec_extract_even])
 416 #define vec_extract_odd_optab (optab_table[OTI_vec_extract_odd])
 417 #define vec_interleave_high_optab (optab_table[OTI_vec_interleave_high])
 418 #define vec_interleave_low_optab (optab_table[OTI_vec_interleave_low])
 419 #define vec_init_optab (optab_table[OTI_vec_init])
 420 #define vec_shl_optab (optab_table[OTI_vec_shl])
 421 #define vec_shr_optab (optab_table[OTI_vec_shr])
 422 #define vec_realign_load_optab (optab_table[OTI_vec_realign_load])
 423 #define vec_widen_umult_hi_optab (optab_table[OTI_vec_widen_umult_hi])
 424 #define vec_widen_umult_lo_optab (optab_table[OTI_vec_widen_umult_lo])
 425 #define vec_widen_smult_hi_optab (optab_table[OTI_vec_widen_smult_hi])
 426 #define vec_widen_smult_lo_optab (optab_table[OTI_vec_widen_smult_lo])
 427 #define vec_unpacks_hi_optab (optab_table[OTI_vec_unpacks_hi])
 428 #define vec_unpacku_hi_optab (optab_table[OTI_vec_unpacku_hi])
 429 #define vec_unpacks_lo_optab (optab_table[OTI_vec_unpacks_lo])
 430 #define vec_unpacku_lo_optab (optab_table[OTI_vec_unpacku_lo])
 431 #define vec_pack_mod_optab (optab_table[OTI_vec_pack_mod])
 432 #define vec_pack_ssat_optab (optab_table[OTI_vec_pack_ssat])
 433 #define vec_pack_usat_optab (optab_table[OTI_vec_pack_usat])
 434
 435 #define powi_optab (optab_table[OTI_powi])
 436
 437 /* Conversion optabs have their own table and indexes.  */
 438 enum convert_optab_index
 439 {
 440   COI_sext,
 441   COI_zext,
 442   COI_trunc,
 443
 444   COI_sfix,
 445   COI_ufix,
 446
 447   COI_sfixtrunc,
 448   COI_ufixtrunc,
 449
 450   COI_sfloat,
 451   COI_ufloat,
 452
 453   COI_lrint,
 454   COI_lround,
 455   COI_lfloor,
 456   COI_lceil,
 457
 458   COI_MAX
 459 };
 460
 461 extern GTY(()) convert_optab convert_optab_table[COI_MAX];
 462
 463 #define sext_optab (convert_optab_table[COI_sext])
 464 #define zext_optab (convert_optab_table[COI_zext])
 465 #define trunc_optab (convert_optab_table[COI_trunc])
 466 #define sfix_optab (convert_optab_table[COI_sfix])
 467 #define ufix_optab (convert_optab_table[COI_ufix])
 468 #define sfixtrunc_optab (convert_optab_table[COI_sfixtrunc])
 469 #define ufixtrunc_optab (convert_optab_table[COI_ufixtrunc])
 470 #define sfloat_optab (convert_optab_table[COI_sfloat])
 471 #define ufloat_optab (convert_optab_table[COI_ufloat])
 472 #define lrint_optab (convert_optab_table[COI_lrint])
 473 #define lround_optab (convert_optab_table[COI_lround])
 474 #define lfloor_optab (convert_optab_table[COI_lfloor])
 475 #define lceil_optab (convert_optab_table[COI_lceil])
 476
 477 /* These arrays record the insn_code of insns that may be needed to
 478    perform input and output reloads of special objects.  They provide a
 479    place to pass a scratch register.  */
 480 extern enum insn_code reload_in_optab[NUM_MACHINE_MODES];
 481 extern enum insn_code reload_out_optab[NUM_MACHINE_MODES];
 482
 483 /* Contains the optab used for each rtx code.  */
 484 extern GTY(()) optab code_to_optab[NUM_RTX_CODE + 1];
 485
 486 \f
 487 typedef rtx (*rtxfun) (rtx);
 488
 489 /* Indexed by the rtx-code for a conditional (e.g. EQ, LT,...)
 490    gives the gen_function to make a branch to test that condition.  */
 491
 492 extern rtxfun bcc_gen_fctn[NUM_RTX_CODE];
 493
 494 /* Indexed by the rtx-code for a conditional (e.g. EQ, LT,...)
 495    gives the insn code to make a store-condition insn
 496    to test that condition.  */
 497
 498 extern enum insn_code setcc_gen_code[NUM_RTX_CODE];
 499
 500 #ifdef HAVE_conditional_move
 501 /* Indexed by the machine mode, gives the insn code to make a conditional
 502    move insn.  */
 503
 504 extern enum insn_code movcc_gen_code[NUM_MACHINE_MODES];
 505 #endif
 506
 507 /* Indexed by the machine mode, gives the insn code for vector conditional
 508    operation.  */
 509
 510 extern enum insn_code vcond_gen_code[NUM_MACHINE_MODES];
 511 extern enum insn_code vcondu_gen_code[NUM_MACHINE_MODES];
 512
 513 /* This array records the insn_code of insns to perform block moves.  */
 514 extern enum insn_code movmem_optab[NUM_MACHINE_MODES];
 515
 516 /* This array records the insn_code of insns to perform block sets.  */
 517 extern enum insn_code setmem_optab[NUM_MACHINE_MODES];
 518
 519 /* These arrays record the insn_code of two different kinds of insns
 520    to perform block compares.  */
 521 extern enum insn_code cmpstr_optab[NUM_MACHINE_MODES];
 522 extern enum insn_code cmpstrn_optab[NUM_MACHINE_MODES];
 523 extern enum insn_code cmpmem_optab[NUM_MACHINE_MODES];
 524
 525 /* Synchronization primitives.  This first set is atomic operation for
 526    which we don't care about the resulting value.  */
 527 extern enum insn_code sync_add_optab[NUM_MACHINE_MODES];
 528 extern enum insn_code sync_sub_optab[NUM_MACHINE_MODES];
 529 extern enum insn_code sync_ior_optab[NUM_MACHINE_MODES];
 530 extern enum insn_code sync_and_optab[NUM_MACHINE_MODES];
 531 extern enum insn_code sync_xor_optab[NUM_MACHINE_MODES];
 532 extern enum insn_code sync_nand_optab[NUM_MACHINE_MODES];
 533
 534 /* This second set is atomic operations in which we return the value
 535    that existed in memory before the operation.  */
 536 extern enum insn_code sync_old_add_optab[NUM_MACHINE_MODES];
 537 extern enum insn_code sync_old_sub_optab[NUM_MACHINE_MODES];
 538 extern enum insn_code sync_old_ior_optab[NUM_MACHINE_MODES];
 539 extern enum insn_code sync_old_and_optab[NUM_MACHINE_MODES];
 540 extern enum insn_code sync_old_xor_optab[NUM_MACHINE_MODES];
 541 extern enum insn_code sync_old_nand_optab[NUM_MACHINE_MODES];
 542
 543 /* This third set is atomic operations in which we return the value
 544    that resulted after performing the operation.  */
 545 extern enum insn_code sync_new_add_optab[NUM_MACHINE_MODES];
 546 extern enum insn_code sync_new_sub_optab[NUM_MACHINE_MODES];
 547 extern enum insn_code sync_new_ior_optab[NUM_MACHINE_MODES];
 548 extern enum insn_code sync_new_and_optab[NUM_MACHINE_MODES];
 549 extern enum insn_code sync_new_xor_optab[NUM_MACHINE_MODES];
 550 extern enum insn_code sync_new_nand_optab[NUM_MACHINE_MODES];
 551
 552 /* Atomic compare and swap.  */
 553 extern enum insn_code sync_compare_and_swap[NUM_MACHINE_MODES];
 554 extern enum insn_code sync_compare_and_swap_cc[NUM_MACHINE_MODES];
 555
 556 /* Atomic exchange with acquire semantics.  */
 557 extern enum insn_code sync_lock_test_and_set[NUM_MACHINE_MODES];
 558
 559 /* Atomic clear with release semantics.  */
 560 extern enum insn_code sync_lock_release[NUM_MACHINE_MODES];
 561
 562 /* Define functions given in optabs.c.  */
 563
 564 extern rtx expand_widen_pattern_expr (tree exp, rtx op0, rtx op1, rtx wide_op,
 565                                       rtx target, int unsignedp);
 566
 567 extern rtx expand_ternary_op (enum machine_mode mode, optab ternary_optab,
 568                               rtx op0, rtx op1, rtx op2, rtx target,
 569                               int unsignedp);
 570
 571 /* Expand a binary operation given optab and rtx operands.  */
 572 extern rtx expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
 573                          enum optab_methods);
 574
 575 extern bool force_expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
 576                                 enum optab_methods);
 577
 578 /* Expand a binary operation with both signed and unsigned forms.  */
 579 extern rtx sign_expand_binop (enum machine_mode, optab, optab, rtx, rtx,
 580                               rtx, int, enum optab_methods);
 581
 582 /* Generate code to perform an operation on one operand with two results.  */
 583 extern int expand_twoval_unop (optab, rtx, rtx, rtx, int);
 584
 585 /* Generate code to perform an operation on two operands with two results.  */
 586 extern int expand_twoval_binop (optab, rtx, rtx, rtx, rtx, int);
 587
 588 /* Generate code to perform an operation on two operands with two
 589    results, using a library function.  */
 590 extern bool expand_twoval_binop_libfunc (optab, rtx, rtx, rtx, rtx,
 591                                          enum rtx_code);
 592
 593 /* Expand a unary arithmetic operation given optab rtx operand.  */
 594 extern rtx expand_unop (enum machine_mode, optab, rtx, rtx, int);
 595
 596 /* Expand the absolute value operation.  */
 597 extern rtx expand_abs_nojump (enum machine_mode, rtx, rtx, int);
 598 extern rtx expand_abs (enum machine_mode, rtx, rtx, int, int);
 599
 600 /* Expand the copysign operation.  */
 601 extern rtx expand_copysign (rtx, rtx, rtx);
 602
 603 /* Generate an instruction with a given INSN_CODE with an output and
 604    an input.  */
 605 extern void emit_unop_insn (int, rtx, rtx, enum rtx_code);
 606
 607 /* Emit code to perform a series of operations on a multi-word quantity, one
 608    word at a time.  */
 609 extern rtx emit_no_conflict_block (rtx, rtx, rtx, rtx, rtx);
 610
 611 /* Emit one rtl insn to compare two rtx's.  */
 612 extern void emit_cmp_insn (rtx, rtx, enum rtx_code, rtx, enum machine_mode,
 613                            int);
 614
 615 /* The various uses that a comparison can have; used by can_compare_p:
 616    jumps, conditional moves, store flag operations.  */
 617 enum can_compare_purpose
 618 {
 619   ccp_jump,
 620   ccp_cmov,
 621   ccp_store_flag
 622 };
 623
 624 /* Return the optab used for computing the given operation on the type
 625    given by the second argument.  */
 626 extern optab optab_for_tree_code (enum tree_code, tree);
 627
 628 /* Nonzero if a compare of mode MODE can be done straightforwardly
 629    (without splitting it into pieces).  */
 630 extern int can_compare_p (enum rtx_code, enum machine_mode,
 631                           enum can_compare_purpose);
 632
 633 /* Return the INSN_CODE to use for an extend operation.  */
 634 extern enum insn_code can_extend_p (enum machine_mode, enum machine_mode, int);
 635
 636 /* Generate the body of an insn to extend Y (with mode MFROM)
 637    into X (with mode MTO).  Do zero-extension if UNSIGNEDP is nonzero.  */
 638 extern rtx gen_extend_insn (rtx, rtx, enum machine_mode,
 639                             enum machine_mode, int);
 640
 641 /* Call this to reset the function entry for one optab.  */
 642 extern void set_optab_libfunc (optab, enum machine_mode, const char *);
 643 extern void set_conv_libfunc (convert_optab, enum machine_mode,
 644                               enum machine_mode, const char *);
 645
 646 /* Generate code for a FLOAT_EXPR.  */
 647 extern void expand_float (rtx, rtx, int);
 648
 649 /* Generate code for a FIX_EXPR.  */
 650 extern void expand_fix (rtx, rtx, int);
 651
 652 /* Generate code for float to integral conversion.  */
 653 extern bool expand_sfix_optab (rtx, rtx, convert_optab);
 654
 655 /* Return tree if target supports vector operations for COND_EXPR.  */
 656 bool expand_vec_cond_expr_p (tree, enum machine_mode);
 657
 658 /* Generate code for VEC_COND_EXPR.  */
 659 extern rtx expand_vec_cond_expr (tree, rtx);
 660
 661 /* Generate code for VEC_LSHIFT_EXPR and VEC_RSHIFT_EXPR.  */
 662 extern rtx expand_vec_shift_expr (tree, rtx);
 663
 664 #endif /* GCC_OPTABS_H */