gcc/optabs.h

   1 /* Definitions for code generation pass of GNU compiler.
   2    Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
   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 3, 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 COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef GCC_OPTABS_H
  22 #define GCC_OPTABS_H
  23
  24 #include "insn-codes.h"
  25
  26 /* Optabs are tables saying how to generate insn bodies
  27    for various machine modes and numbers of operands.
  28    Each optab applies to one operation.
  29
  30    For example, add_optab applies to addition.
  31
  32    The insn_code slot is the enum insn_code that says how to
  33    generate an insn for this operation on a particular machine mode.
  34    It is CODE_FOR_nothing if there is no such insn on the target machine.
  35
  36    The `lib_call' slot is the name of the library function that
  37    can be used to perform the operation.
  38
  39    A few optabs, such as move_optab, are used by special code.  */
  40
  41 struct optab_handlers
  42 {
  43   enum insn_code insn_code;
  44 };
  45
  46 struct optab_d
  47 {
  48   enum rtx_code code;
  49   const char *libcall_basename;
  50   char libcall_suffix;
  51   void (*libcall_gen)(struct optab_d *, const char *name, char suffix,
  52                       enum machine_mode);
  53   struct optab_handlers handlers[NUM_MACHINE_MODES];
  54 };
  55 typedef struct optab_d * optab;
  56
  57 /* A convert_optab is for some sort of conversion operation between
  58    modes.  The first array index is the destination mode, the second
  59    is the source mode.  */
  60 struct convert_optab_d
  61 {
  62   enum rtx_code code;
  63   const char *libcall_basename;
  64   void (*libcall_gen)(struct convert_optab_d *, const char *name,
  65                       enum machine_mode,
  66                       enum machine_mode);
  67   struct optab_handlers handlers[NUM_MACHINE_MODES][NUM_MACHINE_MODES];
  68 };
  69 typedef struct convert_optab_d *convert_optab;
  70
  71 /* Given an enum insn_code, access the function to construct
  72    the body of that kind of insn.  */
  73 #define GEN_FCN(CODE) (insn_data[CODE].genfun)
  74
  75 /* Enumeration of valid indexes into optab_table.  */
  76 enum optab_index
  77 {
  78   /* Fixed-point operators with signed/unsigned saturation */
  79   OTI_ssadd,
  80   OTI_usadd,
  81   OTI_sssub,
  82   OTI_ussub,
  83   OTI_ssmul,
  84   OTI_usmul,
  85   OTI_ssdiv,
  86   OTI_usdiv,
  87   OTI_ssneg,
  88   OTI_usneg,
  89   OTI_ssashl,
  90   OTI_usashl,
  91
  92   OTI_add,
  93   OTI_addv,
  94   OTI_sub,
  95   OTI_subv,
  96
  97   /* Signed and fp multiply */
  98   OTI_smul,
  99   OTI_smulv,
 100   /* Signed multiply, return high word */
 101   OTI_smul_highpart,
 102   OTI_umul_highpart,
 103   /* Signed multiply with result one machine mode wider than args */
 104   OTI_smul_widen,
 105   OTI_umul_widen,
 106   /* Widening multiply of one unsigned and one signed operand.  */
 107   OTI_usmul_widen,
 108   /* Signed multiply and add with the result and addend one machine mode
 109      wider than the multiplicand and multiplier.  */
 110   OTI_smadd_widen,
 111   /* Unsigned multiply and add with the result and addend one machine mode
 112      wider than the multiplicand and multiplier.  */
 113   OTI_umadd_widen,
 114   /* Signed multiply and add with the result and addend one machine mode
 115      wider than the multiplicand and multiplier.
 116      All involved operations are saturating.  */
 117   OTI_ssmadd_widen,
 118   /* Unsigned multiply and add with the result and addend one machine mode
 119      wider than the multiplicand and multiplier.
 120      All involved operations are saturating.  */
 121   OTI_usmadd_widen,
 122   /* Signed multiply and subtract the result and minuend one machine mode
 123      wider than the multiplicand and multiplier.  */
 124   OTI_smsub_widen,
 125   /* Unsigned multiply and subtract the result and minuend one machine mode
 126      wider than the multiplicand and multiplier.  */
 127   OTI_umsub_widen,
 128   /* Signed multiply and subtract the result and minuend one machine mode
 129      wider than the multiplicand and multiplier.
 130      All involved operations are saturating.  */
 131   OTI_ssmsub_widen,
 132   /* Unsigned multiply and subtract the result and minuend one machine mode
 133      wider than the multiplicand and multiplier.
 134      All involved operations are saturating.  */
 135   OTI_usmsub_widen,
 136
 137   /* Signed divide */
 138   OTI_sdiv,
 139   OTI_sdivv,
 140   /* Signed divide-and-remainder in one */
 141   OTI_sdivmod,
 142   OTI_udiv,
 143   OTI_udivmod,
 144   /* Signed remainder */
 145   OTI_smod,
 146   OTI_umod,
 147   /* Floating point remainder functions */
 148   OTI_fmod,
 149   OTI_remainder,
 150   /* Convert float to integer in float fmt */
 151   OTI_ftrunc,
 152
 153   /* Logical and */
 154   OTI_and,
 155   /* Logical or */
 156   OTI_ior,
 157   /* Logical xor */
 158   OTI_xor,
 159
 160   /* Arithmetic shift left */
 161   OTI_ashl,
 162   /* Logical shift right */
 163   OTI_lshr,
 164   /* Arithmetic shift right */
 165   OTI_ashr,
 166   /* Rotate left */
 167   OTI_rotl,
 168   /* Rotate right */
 169   OTI_rotr,
 170
 171   /* Arithmetic shift left of vector by vector */
 172   OTI_vashl,
 173   /* Logical shift right of vector by vector */
 174   OTI_vlshr,
 175   /* Arithmetic shift right of vector by vector */
 176   OTI_vashr,
 177   /* Rotate left of vector by vector */
 178   OTI_vrotl,
 179   /* Rotate right of vector by vector */
 180   OTI_vrotr,
 181
 182   /* Signed and floating-point minimum value */
 183   OTI_smin,
 184   /* Signed and floating-point maximum value */
 185   OTI_smax,
 186   /* Unsigned minimum value */
 187   OTI_umin,
 188   /* Unsigned maximum value */
 189   OTI_umax,
 190   /* Power */
 191   OTI_pow,
 192   /* Arc tangent of y/x */
 193   OTI_atan2,
 194
 195   /* Move instruction.  */
 196   OTI_mov,
 197   /* Move, preserving high part of register.  */
 198   OTI_movstrict,
 199   /* Move, with a misaligned memory.  */
 200   OTI_movmisalign,
 201   /* Nontemporal store.  */
 202   OTI_storent,
 203
 204   /* Unary operations */
 205   /* Negation */
 206   OTI_neg,
 207   OTI_negv,
 208   /* Abs value */
 209   OTI_abs,
 210   OTI_absv,
 211   /* Byteswap */
 212   OTI_bswap,
 213   /* Bitwise not */
 214   OTI_one_cmpl,
 215   /* Bit scanning and counting */
 216   OTI_ffs,
 217   OTI_clz,
 218   OTI_ctz,
 219   OTI_popcount,
 220   OTI_parity,
 221   /* Square root */
 222   OTI_sqrt,
 223   /* Sine-Cosine */
 224   OTI_sincos,
 225   /* Sine */
 226   OTI_sin,
 227   /* Inverse sine */
 228   OTI_asin,
 229   /* Cosine */
 230   OTI_cos,
 231   /* Inverse cosine */
 232   OTI_acos,
 233   /* Exponential */
 234   OTI_exp,
 235   /* Base-10 Exponential */
 236   OTI_exp10,
 237   /* Base-2 Exponential */
 238   OTI_exp2,
 239   /* Exponential - 1*/
 240   OTI_expm1,
 241   /* Load exponent of a floating point number */
 242   OTI_ldexp,
 243   /* Multiply floating-point number by integral power of radix */
 244   OTI_scalb,
 245   /* Mantissa of a floating-point number */
 246   OTI_significand,
 247   /* Radix-independent exponent */
 248   OTI_logb,
 249   OTI_ilogb,
 250   /* Natural Logarithm */
 251   OTI_log,
 252   /* Base-10 Logarithm */
 253   OTI_log10,
 254   /* Base-2 Logarithm */
 255   OTI_log2,
 256   /* logarithm of 1 plus argument */
 257   OTI_log1p,
 258   /* Rounding functions */
 259   OTI_floor,
 260   OTI_ceil,
 261   OTI_btrunc,
 262   OTI_round,
 263   OTI_nearbyint,
 264   OTI_rint,
 265   /* Tangent */
 266   OTI_tan,
 267   /* Inverse tangent */
 268   OTI_atan,
 269   /* Copy sign */
 270   OTI_copysign,
 271   /* Signbit */
 272   OTI_signbit,
 273   /* Test for infinite value */
 274   OTI_isinf,
 275
 276   /* Compare insn; two operands.  Used only for libcalls.  */
 277   OTI_cmp,
 278   OTI_ucmp,
 279
 280   /* Floating point comparison optabs - used primarily for libfuncs */
 281   OTI_eq,
 282   OTI_ne,
 283   OTI_gt,
 284   OTI_ge,
 285   OTI_lt,
 286   OTI_le,
 287   OTI_unord,
 288
 289   /* String length */
 290   OTI_strlen,
 291
 292   /* Combined compare & jump/move/store flags/trap operations.  */
 293   OTI_cbranch,
 294   OTI_cmov,
 295   OTI_cstore,
 296   OTI_ctrap,
 297
 298   /* Push instruction.  */
 299   OTI_push,
 300
 301   /* Conditional add instruction.  */
 302   OTI_addcc,
 303
 304   /* Reduction operations on a vector operand.  */
 305   OTI_reduc_smax,
 306   OTI_reduc_umax,
 307   OTI_reduc_smin,
 308   OTI_reduc_umin,
 309   OTI_reduc_splus,
 310   OTI_reduc_uplus,
 311
 312   /* Summation, with result machine mode one or more wider than args.  */
 313   OTI_ssum_widen,
 314   OTI_usum_widen,
 315
 316   /* Dot product, with result machine mode one or more wider than args.  */
 317   OTI_sdot_prod,
 318   OTI_udot_prod,
 319
 320   /* Set specified field of vector operand.  */
 321   OTI_vec_set,
 322   /* Extract specified field of vector operand.  */
 323   OTI_vec_extract,
 324   /* Extract even/odd fields of vector operands.  */
 325   OTI_vec_extract_even,
 326   OTI_vec_extract_odd,
 327   /* Interleave fields of vector operands.  */
 328   OTI_vec_interleave_high,
 329   OTI_vec_interleave_low,
 330   /* Initialize vector operand.  */
 331   OTI_vec_init,
 332   /* Whole vector shift. The shift amount is in bits.  */
 333   OTI_vec_shl,
 334   OTI_vec_shr,
 335   /* Extract specified elements from vectors, for vector load.  */
 336   OTI_vec_realign_load,
 337   /* Widening multiplication.
 338      The high/low part of the resulting vector of products is returned.  */
 339   OTI_vec_widen_umult_hi,
 340   OTI_vec_widen_umult_lo,
 341   OTI_vec_widen_smult_hi,
 342   OTI_vec_widen_smult_lo,
 343   /* Extract and widen the high/low part of a vector of signed or
 344      floating point elements.  */
 345   OTI_vec_unpacks_hi,
 346   OTI_vec_unpacks_lo,
 347   /* Extract and widen the high/low part of a vector of unsigned
 348      elements.  */
 349   OTI_vec_unpacku_hi,
 350   OTI_vec_unpacku_lo,
 351
 352   /* Extract, convert to floating point and widen the high/low part of
 353      a vector of signed or unsigned integer elements.  */
 354   OTI_vec_unpacks_float_hi,
 355   OTI_vec_unpacks_float_lo,
 356   OTI_vec_unpacku_float_hi,
 357   OTI_vec_unpacku_float_lo,
 358
 359   /* Narrow (demote) and merge the elements of two vectors.  */
 360   OTI_vec_pack_trunc,
 361   OTI_vec_pack_usat,
 362   OTI_vec_pack_ssat,
 363
 364   /* Convert to signed/unsigned integer, narrow and merge elements
 365      of two vectors of floating point elements.  */
 366   OTI_vec_pack_sfix_trunc,
 367   OTI_vec_pack_ufix_trunc,
 368
 369   /* Perform a raise to the power of integer.  */
 370   OTI_powi,
 371
 372   OTI_MAX
 373 };
 374
 375 extern struct optab_d optab_table[OTI_MAX];
 376
 377 #define ssadd_optab (&optab_table[OTI_ssadd])
 378 #define usadd_optab (&optab_table[OTI_usadd])
 379 #define sssub_optab (&optab_table[OTI_sssub])
 380 #define ussub_optab (&optab_table[OTI_ussub])
 381 #define ssmul_optab (&optab_table[OTI_ssmul])
 382 #define usmul_optab (&optab_table[OTI_usmul])
 383 #define ssdiv_optab (&optab_table[OTI_ssdiv])
 384 #define usdiv_optab (&optab_table[OTI_usdiv])
 385 #define ssneg_optab (&optab_table[OTI_ssneg])
 386 #define usneg_optab (&optab_table[OTI_usneg])
 387 #define ssashl_optab (&optab_table[OTI_ssashl])
 388 #define usashl_optab (&optab_table[OTI_usashl])
 389
 390 #define add_optab (&optab_table[OTI_add])
 391 #define sub_optab (&optab_table[OTI_sub])
 392 #define smul_optab (&optab_table[OTI_smul])
 393 #define addv_optab (&optab_table[OTI_addv])
 394 #define subv_optab (&optab_table[OTI_subv])
 395 #define smul_highpart_optab (&optab_table[OTI_smul_highpart])
 396 #define umul_highpart_optab (&optab_table[OTI_umul_highpart])
 397 #define smul_widen_optab (&optab_table[OTI_smul_widen])
 398 #define umul_widen_optab (&optab_table[OTI_umul_widen])
 399 #define usmul_widen_optab (&optab_table[OTI_usmul_widen])
 400 #define smadd_widen_optab (&optab_table[OTI_smadd_widen])
 401 #define umadd_widen_optab (&optab_table[OTI_umadd_widen])
 402 #define ssmadd_widen_optab (&optab_table[OTI_ssmadd_widen])
 403 #define usmadd_widen_optab (&optab_table[OTI_usmadd_widen])
 404 #define smsub_widen_optab (&optab_table[OTI_smsub_widen])
 405 #define umsub_widen_optab (&optab_table[OTI_umsub_widen])
 406 #define ssmsub_widen_optab (&optab_table[OTI_ssmsub_widen])
 407 #define usmsub_widen_optab (&optab_table[OTI_usmsub_widen])
 408 #define sdiv_optab (&optab_table[OTI_sdiv])
 409 #define smulv_optab (&optab_table[OTI_smulv])
 410 #define sdivv_optab (&optab_table[OTI_sdivv])
 411 #define sdivmod_optab (&optab_table[OTI_sdivmod])
 412 #define udiv_optab (&optab_table[OTI_udiv])
 413 #define udivmod_optab (&optab_table[OTI_udivmod])
 414 #define smod_optab (&optab_table[OTI_smod])
 415 #define umod_optab (&optab_table[OTI_umod])
 416 #define fmod_optab (&optab_table[OTI_fmod])
 417 #define remainder_optab (&optab_table[OTI_remainder])
 418 #define ftrunc_optab (&optab_table[OTI_ftrunc])
 419 #define and_optab (&optab_table[OTI_and])
 420 #define ior_optab (&optab_table[OTI_ior])
 421 #define xor_optab (&optab_table[OTI_xor])
 422 #define ashl_optab (&optab_table[OTI_ashl])
 423 #define lshr_optab (&optab_table[OTI_lshr])
 424 #define ashr_optab (&optab_table[OTI_ashr])
 425 #define rotl_optab (&optab_table[OTI_rotl])
 426 #define rotr_optab (&optab_table[OTI_rotr])
 427 #define vashl_optab (&optab_table[OTI_vashl])
 428 #define vlshr_optab (&optab_table[OTI_vlshr])
 429 #define vashr_optab (&optab_table[OTI_vashr])
 430 #define vrotl_optab (&optab_table[OTI_vrotl])
 431 #define vrotr_optab (&optab_table[OTI_vrotr])
 432 #define smin_optab (&optab_table[OTI_smin])
 433 #define smax_optab (&optab_table[OTI_smax])
 434 #define umin_optab (&optab_table[OTI_umin])
 435 #define umax_optab (&optab_table[OTI_umax])
 436 #define pow_optab (&optab_table[OTI_pow])
 437 #define atan2_optab (&optab_table[OTI_atan2])
 438
 439 #define mov_optab (&optab_table[OTI_mov])
 440 #define movstrict_optab (&optab_table[OTI_movstrict])
 441 #define movmisalign_optab (&optab_table[OTI_movmisalign])
 442 #define storent_optab (&optab_table[OTI_storent])
 443
 444 #define neg_optab (&optab_table[OTI_neg])
 445 #define negv_optab (&optab_table[OTI_negv])
 446 #define abs_optab (&optab_table[OTI_abs])
 447 #define absv_optab (&optab_table[OTI_absv])
 448 #define one_cmpl_optab (&optab_table[OTI_one_cmpl])
 449 #define bswap_optab (&optab_table[OTI_bswap])
 450 #define ffs_optab (&optab_table[OTI_ffs])
 451 #define clz_optab (&optab_table[OTI_clz])
 452 #define ctz_optab (&optab_table[OTI_ctz])
 453 #define popcount_optab (&optab_table[OTI_popcount])
 454 #define parity_optab (&optab_table[OTI_parity])
 455 #define sqrt_optab (&optab_table[OTI_sqrt])
 456 #define sincos_optab (&optab_table[OTI_sincos])
 457 #define sin_optab (&optab_table[OTI_sin])
 458 #define asin_optab (&optab_table[OTI_asin])
 459 #define cos_optab (&optab_table[OTI_cos])
 460 #define acos_optab (&optab_table[OTI_acos])
 461 #define exp_optab (&optab_table[OTI_exp])
 462 #define exp10_optab (&optab_table[OTI_exp10])
 463 #define exp2_optab (&optab_table[OTI_exp2])
 464 #define expm1_optab (&optab_table[OTI_expm1])
 465 #define ldexp_optab (&optab_table[OTI_ldexp])
 466 #define scalb_optab (&optab_table[OTI_scalb])
 467 #define significand_optab (&optab_table[OTI_significand])
 468 #define logb_optab (&optab_table[OTI_logb])
 469 #define ilogb_optab (&optab_table[OTI_ilogb])
 470 #define log_optab (&optab_table[OTI_log])
 471 #define log10_optab (&optab_table[OTI_log10])
 472 #define log2_optab (&optab_table[OTI_log2])
 473 #define log1p_optab (&optab_table[OTI_log1p])
 474 #define floor_optab (&optab_table[OTI_floor])
 475 #define ceil_optab (&optab_table[OTI_ceil])
 476 #define btrunc_optab (&optab_table[OTI_btrunc])
 477 #define round_optab (&optab_table[OTI_round])
 478 #define nearbyint_optab (&optab_table[OTI_nearbyint])
 479 #define rint_optab (&optab_table[OTI_rint])
 480 #define tan_optab (&optab_table[OTI_tan])
 481 #define atan_optab (&optab_table[OTI_atan])
 482 #define copysign_optab (&optab_table[OTI_copysign])
 483 #define signbit_optab (&optab_table[OTI_signbit])
 484 #define isinf_optab (&optab_table[OTI_isinf])
 485
 486 #define cmp_optab (&optab_table[OTI_cmp])
 487 #define ucmp_optab (&optab_table[OTI_ucmp])
 488
 489 #define eq_optab (&optab_table[OTI_eq])
 490 #define ne_optab (&optab_table[OTI_ne])
 491 #define gt_optab (&optab_table[OTI_gt])
 492 #define ge_optab (&optab_table[OTI_ge])
 493 #define lt_optab (&optab_table[OTI_lt])
 494 #define le_optab (&optab_table[OTI_le])
 495 #define unord_optab (&optab_table[OTI_unord])
 496
 497 #define strlen_optab (&optab_table[OTI_strlen])
 498
 499 #define cbranch_optab (&optab_table[OTI_cbranch])
 500 #define cmov_optab (&optab_table[OTI_cmov])
 501 #define cstore_optab (&optab_table[OTI_cstore])
 502 #define ctrap_optab (&optab_table[OTI_ctrap])
 503
 504 #define push_optab (&optab_table[OTI_push])
 505 #define addcc_optab (&optab_table[OTI_addcc])
 506
 507 #define reduc_smax_optab (&optab_table[OTI_reduc_smax])
 508 #define reduc_umax_optab (&optab_table[OTI_reduc_umax])
 509 #define reduc_smin_optab (&optab_table[OTI_reduc_smin])
 510 #define reduc_umin_optab (&optab_table[OTI_reduc_umin])
 511 #define reduc_splus_optab (&optab_table[OTI_reduc_splus])
 512 #define reduc_uplus_optab (&optab_table[OTI_reduc_uplus])
 513
 514 #define ssum_widen_optab (&optab_table[OTI_ssum_widen])
 515 #define usum_widen_optab (&optab_table[OTI_usum_widen])
 516 #define sdot_prod_optab (&optab_table[OTI_sdot_prod])
 517 #define udot_prod_optab (&optab_table[OTI_udot_prod])
 518
 519 #define vec_set_optab (&optab_table[OTI_vec_set])
 520 #define vec_extract_optab (&optab_table[OTI_vec_extract])
 521 #define vec_extract_even_optab (&optab_table[OTI_vec_extract_even])
 522 #define vec_extract_odd_optab (&optab_table[OTI_vec_extract_odd])
 523 #define vec_interleave_high_optab (&optab_table[OTI_vec_interleave_high])
 524 #define vec_interleave_low_optab (&optab_table[OTI_vec_interleave_low])
 525 #define vec_init_optab (&optab_table[OTI_vec_init])
 526 #define vec_shl_optab (&optab_table[OTI_vec_shl])
 527 #define vec_shr_optab (&optab_table[OTI_vec_shr])
 528 #define vec_realign_load_optab (&optab_table[OTI_vec_realign_load])
 529 #define vec_widen_umult_hi_optab (&optab_table[OTI_vec_widen_umult_hi])
 530 #define vec_widen_umult_lo_optab (&optab_table[OTI_vec_widen_umult_lo])
 531 #define vec_widen_smult_hi_optab (&optab_table[OTI_vec_widen_smult_hi])
 532 #define vec_widen_smult_lo_optab (&optab_table[OTI_vec_widen_smult_lo])
 533 #define vec_unpacks_hi_optab (&optab_table[OTI_vec_unpacks_hi])
 534 #define vec_unpacks_lo_optab (&optab_table[OTI_vec_unpacks_lo])
 535 #define vec_unpacku_hi_optab (&optab_table[OTI_vec_unpacku_hi])
 536 #define vec_unpacku_lo_optab (&optab_table[OTI_vec_unpacku_lo])
 537 #define vec_unpacks_float_hi_optab (&optab_table[OTI_vec_unpacks_float_hi])
 538 #define vec_unpacks_float_lo_optab (&optab_table[OTI_vec_unpacks_float_lo])
 539 #define vec_unpacku_float_hi_optab (&optab_table[OTI_vec_unpacku_float_hi])
 540 #define vec_unpacku_float_lo_optab (&optab_table[OTI_vec_unpacku_float_lo])
 541 #define vec_pack_trunc_optab (&optab_table[OTI_vec_pack_trunc])
 542 #define vec_pack_ssat_optab (&optab_table[OTI_vec_pack_ssat])
 543 #define vec_pack_usat_optab (&optab_table[OTI_vec_pack_usat])
 544 #define vec_pack_sfix_trunc_optab (&optab_table[OTI_vec_pack_sfix_trunc])
 545 #define vec_pack_ufix_trunc_optab (&optab_table[OTI_vec_pack_ufix_trunc])
 546
 547 #define powi_optab (&optab_table[OTI_powi])
 548
 549 /* Conversion optabs have their own table and indexes.  */
 550 enum convert_optab_index
 551 {
 552   COI_sext,
 553   COI_zext,
 554   COI_trunc,
 555
 556   COI_sfix,
 557   COI_ufix,
 558
 559   COI_sfixtrunc,
 560   COI_ufixtrunc,
 561
 562   COI_sfloat,
 563   COI_ufloat,
 564
 565   COI_lrint,
 566   COI_lround,
 567   COI_lfloor,
 568   COI_lceil,
 569
 570   COI_fract,
 571   COI_fractuns,
 572   COI_satfract,
 573   COI_satfractuns,
 574
 575   COI_MAX
 576 };
 577
 578 extern struct convert_optab_d convert_optab_table[COI_MAX];
 579
 580 #define sext_optab (&convert_optab_table[COI_sext])
 581 #define zext_optab (&convert_optab_table[COI_zext])
 582 #define trunc_optab (&convert_optab_table[COI_trunc])
 583 #define sfix_optab (&convert_optab_table[COI_sfix])
 584 #define ufix_optab (&convert_optab_table[COI_ufix])
 585 #define sfixtrunc_optab (&convert_optab_table[COI_sfixtrunc])
 586 #define ufixtrunc_optab (&convert_optab_table[COI_ufixtrunc])
 587 #define sfloat_optab (&convert_optab_table[COI_sfloat])
 588 #define ufloat_optab (&convert_optab_table[COI_ufloat])
 589 #define lrint_optab (&convert_optab_table[COI_lrint])
 590 #define lround_optab (&convert_optab_table[COI_lround])
 591 #define lfloor_optab (&convert_optab_table[COI_lfloor])
 592 #define lceil_optab (&convert_optab_table[COI_lceil])
 593 #define fract_optab (&convert_optab_table[COI_fract])
 594 #define fractuns_optab (&convert_optab_table[COI_fractuns])
 595 #define satfract_optab (&convert_optab_table[COI_satfract])
 596 #define satfractuns_optab (&convert_optab_table[COI_satfractuns])
 597
 598 /* These arrays record the insn_code of insns that may be needed to
 599    perform input and output reloads of special objects.  They provide a
 600    place to pass a scratch register.  */
 601 extern enum insn_code reload_in_optab[NUM_MACHINE_MODES];
 602 extern enum insn_code reload_out_optab[NUM_MACHINE_MODES];
 603
 604 /* Contains the optab used for each rtx code.  */
 605 extern optab code_to_optab[NUM_RTX_CODE + 1];
 606
 607 \f
 608 typedef rtx (*rtxfun) (rtx);
 609
 610 #ifdef HAVE_conditional_move
 611 /* Indexed by the machine mode, gives the insn code to make a conditional
 612    move insn.  */
 613
 614 extern enum insn_code movcc_gen_code[NUM_MACHINE_MODES];
 615 #endif
 616
 617 /* Indexed by the machine mode, gives the insn code for vector conditional
 618    operation.  */
 619
 620 extern enum insn_code vcond_gen_code[NUM_MACHINE_MODES];
 621 extern enum insn_code vcondu_gen_code[NUM_MACHINE_MODES];
 622
 623 /* This array records the insn_code of insns to perform block moves.  */
 624 extern enum insn_code movmem_optab[NUM_MACHINE_MODES];
 625
 626 /* This array records the insn_code of insns to perform block sets.  */
 627 extern enum insn_code setmem_optab[NUM_MACHINE_MODES];
 628
 629 /* These arrays record the insn_code of two different kinds of insns
 630    to perform block compares.  */
 631 extern enum insn_code cmpstr_optab[NUM_MACHINE_MODES];
 632 extern enum insn_code cmpstrn_optab[NUM_MACHINE_MODES];
 633 extern enum insn_code cmpmem_optab[NUM_MACHINE_MODES];
 634
 635 /* Synchronization primitives.  This first set is atomic operation for
 636    which we don't care about the resulting value.  */
 637 extern enum insn_code sync_add_optab[NUM_MACHINE_MODES];
 638 extern enum insn_code sync_sub_optab[NUM_MACHINE_MODES];
 639 extern enum insn_code sync_ior_optab[NUM_MACHINE_MODES];
 640 extern enum insn_code sync_and_optab[NUM_MACHINE_MODES];
 641 extern enum insn_code sync_xor_optab[NUM_MACHINE_MODES];
 642 extern enum insn_code sync_nand_optab[NUM_MACHINE_MODES];
 643
 644 /* This second set is atomic operations in which we return the value
 645    that existed in memory before the operation.  */
 646 extern enum insn_code sync_old_add_optab[NUM_MACHINE_MODES];
 647 extern enum insn_code sync_old_sub_optab[NUM_MACHINE_MODES];
 648 extern enum insn_code sync_old_ior_optab[NUM_MACHINE_MODES];
 649 extern enum insn_code sync_old_and_optab[NUM_MACHINE_MODES];
 650 extern enum insn_code sync_old_xor_optab[NUM_MACHINE_MODES];
 651 extern enum insn_code sync_old_nand_optab[NUM_MACHINE_MODES];
 652
 653 /* This third set is atomic operations in which we return the value
 654    that resulted after performing the operation.  */
 655 extern enum insn_code sync_new_add_optab[NUM_MACHINE_MODES];
 656 extern enum insn_code sync_new_sub_optab[NUM_MACHINE_MODES];
 657 extern enum insn_code sync_new_ior_optab[NUM_MACHINE_MODES];
 658 extern enum insn_code sync_new_and_optab[NUM_MACHINE_MODES];
 659 extern enum insn_code sync_new_xor_optab[NUM_MACHINE_MODES];
 660 extern enum insn_code sync_new_nand_optab[NUM_MACHINE_MODES];
 661
 662 /* Atomic compare and swap.  */
 663 extern enum insn_code sync_compare_and_swap[NUM_MACHINE_MODES];
 664
 665 /* Atomic exchange with acquire semantics.  */
 666 extern enum insn_code sync_lock_test_and_set[NUM_MACHINE_MODES];
 667
 668 /* Atomic clear with release semantics.  */
 669 extern enum insn_code sync_lock_release[NUM_MACHINE_MODES];
 670
 671 /* Define functions given in optabs.c.  */
 672
 673 extern rtx expand_widen_pattern_expr (tree exp, rtx op0, rtx op1, rtx wide_op,
 674                                       rtx target, int unsignedp);
 675
 676 extern rtx expand_ternary_op (enum machine_mode mode, optab ternary_optab,
 677                               rtx op0, rtx op1, rtx op2, rtx target,
 678                               int unsignedp);
 679
 680 /* Expand a binary operation given optab and rtx operands.  */
 681 extern rtx expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
 682                          enum optab_methods);
 683
 684 extern bool force_expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
 685                                 enum optab_methods);
 686
 687 /* Expand a binary operation with both signed and unsigned forms.  */
 688 extern rtx sign_expand_binop (enum machine_mode, optab, optab, rtx, rtx,
 689                               rtx, int, enum optab_methods);
 690
 691 /* Generate code to perform an operation on one operand with two results.  */
 692 extern int expand_twoval_unop (optab, rtx, rtx, rtx, int);
 693
 694 /* Generate code to perform an operation on two operands with two results.  */
 695 extern int expand_twoval_binop (optab, rtx, rtx, rtx, rtx, int);
 696
 697 /* Generate code to perform an operation on two operands with two
 698    results, using a library function.  */
 699 extern bool expand_twoval_binop_libfunc (optab, rtx, rtx, rtx, rtx,
 700                                          enum rtx_code);
 701
 702 /* Expand a unary arithmetic operation given optab rtx operand.  */
 703 extern rtx expand_unop (enum machine_mode, optab, rtx, rtx, int);
 704
 705 /* Expand the absolute value operation.  */
 706 extern rtx expand_abs_nojump (enum machine_mode, rtx, rtx, int);
 707 extern rtx expand_abs (enum machine_mode, rtx, rtx, int, int);
 708
 709 /* Expand the copysign operation.  */
 710 extern rtx expand_copysign (rtx, rtx, rtx);
 711
 712 /* Generate an instruction with a given INSN_CODE with an output and
 713    an input.  */
 714 extern void emit_unop_insn (int, rtx, rtx, enum rtx_code);
 715 extern bool maybe_emit_unop_insn (int, rtx, rtx, enum rtx_code);
 716
 717 /* An extra flag to control optab_for_tree_code's behavior.  This is needed to
 718    distinguish between machines with a vector shift that takes a scalar for the
 719    shift amount vs. machines that take a vector for the shift amount.  */
 720 enum optab_subtype
 721 {
 722   optab_default,
 723   optab_scalar,
 724   optab_vector
 725 };
 726
 727 /* Return the optab used for computing the given operation on the type given by
 728    the second argument.  The third argument distinguishes between the types of
 729    vector shifts and rotates */
 730 extern optab optab_for_tree_code (enum tree_code, const_tree, enum optab_subtype);
 731
 732 /* The various uses that a comparison can have; used by can_compare_p:
 733    jumps, conditional moves, store flag operations.  */
 734 enum can_compare_purpose
 735 {
 736   ccp_jump,
 737   ccp_cmov,
 738   ccp_store_flag
 739 };
 740
 741 /* Nonzero if a compare of mode MODE can be done straightforwardly
 742    (without splitting it into pieces).  */
 743 extern int can_compare_p (enum rtx_code, enum machine_mode,
 744                           enum can_compare_purpose);
 745
 746 /* Return the INSN_CODE to use for an extend operation.  */
 747 extern enum insn_code can_extend_p (enum machine_mode, enum machine_mode, int);
 748
 749 /* Generate the body of an insn to extend Y (with mode MFROM)
 750    into X (with mode MTO).  Do zero-extension if UNSIGNEDP is nonzero.  */
 751 extern rtx gen_extend_insn (rtx, rtx, enum machine_mode,
 752                             enum machine_mode, int);
 753
 754 /* Call this to reset the function entry for one optab.  */
 755 extern void set_optab_libfunc (optab, enum machine_mode, const char *);
 756 extern void set_conv_libfunc (convert_optab, enum machine_mode,
 757                               enum machine_mode, const char *);
 758
 759 /* Generate code for a FIXED_CONVERT_EXPR.  */
 760 extern void expand_fixed_convert (rtx, rtx, int, int);
 761
 762 /* Generate code for a FLOAT_EXPR.  */
 763 extern void expand_float (rtx, rtx, int);
 764
 765 /* Generate code for a FIX_EXPR.  */
 766 extern void expand_fix (rtx, rtx, int);
 767
 768 /* Generate code for float to integral conversion.  */
 769 extern bool expand_sfix_optab (rtx, rtx, convert_optab);
 770
 771 /* Return tree if target supports vector operations for COND_EXPR.  */
 772 bool expand_vec_cond_expr_p (tree, enum machine_mode);
 773
 774 /* Generate code for VEC_COND_EXPR.  */
 775 extern rtx expand_vec_cond_expr (tree, rtx);
 776
 777 /* Generate code for VEC_LSHIFT_EXPR and VEC_RSHIFT_EXPR.  */
 778 extern rtx expand_vec_shift_expr (tree, rtx);
 779
 780 #define optab_handler(optab,mode) (&(optab)->handlers[(int) (mode)])
 781 #define convert_optab_handler(optab,mode,mode2) \
 782         (&(optab)->handlers[(int) (mode)][(int) (mode2)])
 783
 784 extern rtx optab_libfunc (optab optab, enum machine_mode mode);
 785 extern rtx optab_libfunc (optab optab, enum machine_mode mode);
 786 extern rtx convert_optab_libfunc (convert_optab optab, enum machine_mode mode1,
 787                                   enum machine_mode mode2);
 788 #endif /* GCC_OPTABS_H */