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    2010, 2012  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 widening_optab_handlers
  47 {
  48   struct optab_handlers handlers[NUM_MACHINE_MODES][NUM_MACHINE_MODES];
  49 };
  50
  51 struct optab_d
  52 {
  53   enum rtx_code code;
  54   char libcall_suffix;
  55   const char *libcall_basename;
  56   void (*libcall_gen)(struct optab_d *, const char *name, char suffix,
  57                       enum machine_mode);
  58   struct optab_handlers handlers[NUM_MACHINE_MODES];
  59   struct widening_optab_handlers *widening;
  60 };
  61 typedef struct optab_d * optab;
  62
  63 /* A convert_optab is for some sort of conversion operation between
  64    modes.  The first array index is the destination mode, the second
  65    is the source mode.  */
  66 struct convert_optab_d
  67 {
  68   enum rtx_code code;
  69   const char *libcall_basename;
  70   void (*libcall_gen)(struct convert_optab_d *, const char *name,
  71                       enum machine_mode,
  72                       enum machine_mode);
  73   struct optab_handlers handlers[NUM_MACHINE_MODES][NUM_MACHINE_MODES];
  74 };
  75 typedef struct convert_optab_d *convert_optab;
  76
  77 /* Given an enum insn_code, access the function to construct
  78    the body of that kind of insn.  */
  79 #define GEN_FCN(CODE) (insn_data[CODE].genfun)
  80
  81 /* Enumeration of valid indexes into optab_table.  */
  82 enum optab_index
  83 {
  84   /* Fixed-point operators with signed/unsigned saturation */
  85   OTI_ssadd,
  86   OTI_usadd,
  87   OTI_sssub,
  88   OTI_ussub,
  89   OTI_ssmul,
  90   OTI_usmul,
  91   OTI_ssdiv,
  92   OTI_usdiv,
  93   OTI_ssneg,
  94   OTI_usneg,
  95   OTI_ssashl,
  96   OTI_usashl,
  97
  98   OTI_add,
  99   OTI_addv,
 100   OTI_sub,
 101   OTI_subv,
 102
 103   /* Signed and fp multiply */
 104   OTI_smul,
 105   OTI_smulv,
 106   /* Signed multiply, return high word */
 107   OTI_smul_highpart,
 108   OTI_umul_highpart,
 109   /* Signed multiply with result one machine mode wider than args */
 110   OTI_smul_widen,
 111   OTI_umul_widen,
 112   /* Widening multiply of one unsigned and one signed operand.  */
 113   OTI_usmul_widen,
 114   /* Signed multiply and add with the result and addend one machine mode
 115      wider than the multiplicand and multiplier.  */
 116   OTI_smadd_widen,
 117   /* Unsigned multiply and add with the result and addend one machine mode
 118      wider than the multiplicand and multiplier.  */
 119   OTI_umadd_widen,
 120   /* Signed multiply and add with the result and addend one machine mode
 121      wider than the multiplicand and multiplier.
 122      All involved operations are saturating.  */
 123   OTI_ssmadd_widen,
 124   /* Unsigned multiply and add with the result and addend one machine mode
 125      wider than the multiplicand and multiplier.
 126      All involved operations are saturating.  */
 127   OTI_usmadd_widen,
 128   /* Signed multiply and subtract the result and minuend one machine mode
 129      wider than the multiplicand and multiplier.  */
 130   OTI_smsub_widen,
 131   /* Unsigned multiply and subtract the result and minuend one machine mode
 132      wider than the multiplicand and multiplier.  */
 133   OTI_umsub_widen,
 134   /* Signed multiply and subtract the result and minuend one machine mode
 135      wider than the multiplicand and multiplier.
 136      All involved operations are saturating.  */
 137   OTI_ssmsub_widen,
 138   /* Unsigned multiply and subtract the result and minuend one machine mode
 139      wider than the multiplicand and multiplier.
 140      All involved operations are saturating.  */
 141   OTI_usmsub_widen,
 142
 143   /* Signed divide */
 144   OTI_sdiv,
 145   OTI_sdivv,
 146   /* Signed divide-and-remainder in one */
 147   OTI_sdivmod,
 148   OTI_udiv,
 149   OTI_udivmod,
 150   /* Signed remainder */
 151   OTI_smod,
 152   OTI_umod,
 153   /* Floating point remainder functions */
 154   OTI_fmod,
 155   OTI_remainder,
 156   /* Convert float to integer in float fmt */
 157   OTI_ftrunc,
 158
 159   /* Logical and */
 160   OTI_and,
 161   /* Logical or */
 162   OTI_ior,
 163   /* Logical xor */
 164   OTI_xor,
 165
 166   /* Arithmetic shift left */
 167   OTI_ashl,
 168   /* Logical shift right */
 169   OTI_lshr,
 170   /* Arithmetic shift right */
 171   OTI_ashr,
 172   /* Rotate left */
 173   OTI_rotl,
 174   /* Rotate right */
 175   OTI_rotr,
 176
 177   /* Arithmetic shift left of vector by vector */
 178   OTI_vashl,
 179   /* Logical shift right of vector by vector */
 180   OTI_vlshr,
 181   /* Arithmetic shift right of vector by vector */
 182   OTI_vashr,
 183   /* Rotate left of vector by vector */
 184   OTI_vrotl,
 185   /* Rotate right of vector by vector */
 186   OTI_vrotr,
 187
 188   /* Signed and floating-point minimum value */
 189   OTI_smin,
 190   /* Signed and floating-point maximum value */
 191   OTI_smax,
 192   /* Unsigned minimum value */
 193   OTI_umin,
 194   /* Unsigned maximum value */
 195   OTI_umax,
 196   /* Power */
 197   OTI_pow,
 198   /* Arc tangent of y/x */
 199   OTI_atan2,
 200   /* Floating multiply/add */
 201   OTI_fma,
 202   OTI_fms,
 203   OTI_fnma,
 204   OTI_fnms,
 205
 206   /* Move instruction.  */
 207   OTI_mov,
 208   /* Move, preserving high part of register.  */
 209   OTI_movstrict,
 210   /* Move, with a misaligned memory.  */
 211   OTI_movmisalign,
 212   /* Nontemporal store.  */
 213   OTI_storent,
 214
 215   /* Unary operations */
 216   /* Negation */
 217   OTI_neg,
 218   OTI_negv,
 219   /* Abs value */
 220   OTI_abs,
 221   OTI_absv,
 222   /* Byteswap */
 223   OTI_bswap,
 224   /* Bitwise not */
 225   OTI_one_cmpl,
 226   /* Bit scanning and counting */
 227   OTI_ffs,
 228   OTI_clz,
 229   OTI_ctz,
 230   OTI_clrsb,
 231   OTI_popcount,
 232   OTI_parity,
 233   /* Square root */
 234   OTI_sqrt,
 235   /* Sine-Cosine */
 236   OTI_sincos,
 237   /* Sine */
 238   OTI_sin,
 239   /* Inverse sine */
 240   OTI_asin,
 241   /* Cosine */
 242   OTI_cos,
 243   /* Inverse cosine */
 244   OTI_acos,
 245   /* Exponential */
 246   OTI_exp,
 247   /* Base-10 Exponential */
 248   OTI_exp10,
 249   /* Base-2 Exponential */
 250   OTI_exp2,
 251   /* Exponential - 1*/
 252   OTI_expm1,
 253   /* Load exponent of a floating point number */
 254   OTI_ldexp,
 255   /* Multiply floating-point number by integral power of radix */
 256   OTI_scalb,
 257   /* Mantissa of a floating-point number */
 258   OTI_significand,
 259   /* Radix-independent exponent */
 260   OTI_logb,
 261   OTI_ilogb,
 262   /* Natural Logarithm */
 263   OTI_log,
 264   /* Base-10 Logarithm */
 265   OTI_log10,
 266   /* Base-2 Logarithm */
 267   OTI_log2,
 268   /* logarithm of 1 plus argument */
 269   OTI_log1p,
 270   /* Rounding functions */
 271   OTI_floor,
 272   OTI_ceil,
 273   OTI_btrunc,
 274   OTI_round,
 275   OTI_nearbyint,
 276   OTI_rint,
 277   /* Tangent */
 278   OTI_tan,
 279   /* Inverse tangent */
 280   OTI_atan,
 281   /* Copy sign */
 282   OTI_copysign,
 283   /* Signbit */
 284   OTI_signbit,
 285   /* Test for infinite value */
 286   OTI_isinf,
 287
 288   /* Compare insn; two operands.  Used only for libcalls.  */
 289   OTI_cmp,
 290   OTI_ucmp,
 291
 292   /* Floating point comparison optabs - used primarily for libfuncs */
 293   OTI_eq,
 294   OTI_ne,
 295   OTI_gt,
 296   OTI_ge,
 297   OTI_lt,
 298   OTI_le,
 299   OTI_unord,
 300
 301   /* String length */
 302   OTI_strlen,
 303
 304   /* Combined compare & jump/move/store flags/trap operations.  */
 305   OTI_cbranch,
 306   OTI_cmov,
 307   OTI_cstore,
 308   OTI_ctrap,
 309
 310   /* Push instruction.  */
 311   OTI_push,
 312
 313   /* Conditional add instruction.  */
 314   OTI_addcc,
 315
 316   /* Reduction operations on a vector operand.  */
 317   OTI_reduc_smax,
 318   OTI_reduc_umax,
 319   OTI_reduc_smin,
 320   OTI_reduc_umin,
 321   OTI_reduc_splus,
 322   OTI_reduc_uplus,
 323
 324   /* Summation, with result machine mode one or more wider than args.  */
 325   OTI_ssum_widen,
 326   OTI_usum_widen,
 327
 328   /* Dot product, with result machine mode one or more wider than args.  */
 329   OTI_sdot_prod,
 330   OTI_udot_prod,
 331
 332   /* Set specified field of vector operand.  */
 333   OTI_vec_set,
 334   /* Extract specified field of vector operand.  */
 335   OTI_vec_extract,
 336   /* Initialize vector operand.  */
 337   OTI_vec_init,
 338   /* Whole vector shift. The shift amount is in bits.  */
 339   OTI_vec_shl,
 340   OTI_vec_shr,
 341   /* Extract specified elements from vectors, for vector load.  */
 342   OTI_vec_realign_load,
 343   /* Widening multiplication.  The high/low/even/odd part of the
 344      resulting vector of products is returned.  */
 345   OTI_vec_widen_umult_hi,
 346   OTI_vec_widen_umult_lo,
 347   OTI_vec_widen_smult_hi,
 348   OTI_vec_widen_smult_lo,
 349   OTI_vec_widen_umult_even,
 350   OTI_vec_widen_umult_odd,
 351   OTI_vec_widen_smult_even,
 352   OTI_vec_widen_smult_odd,
 353   /* Widening shift left.
 354      The high/low part of the resulting vector is returned.  */
 355   OTI_vec_widen_ushiftl_hi,
 356   OTI_vec_widen_ushiftl_lo,
 357   OTI_vec_widen_sshiftl_hi,
 358   OTI_vec_widen_sshiftl_lo,
 359   /* Extract and widen the high/low part of a vector of signed or
 360      floating point elements.  */
 361   OTI_vec_unpacks_hi,
 362   OTI_vec_unpacks_lo,
 363   /* Extract and widen the high/low part of a vector of unsigned
 364      elements.  */
 365   OTI_vec_unpacku_hi,
 366   OTI_vec_unpacku_lo,
 367
 368   /* Extract, convert to floating point and widen the high/low part of
 369      a vector of signed or unsigned integer elements.  */
 370   OTI_vec_unpacks_float_hi,
 371   OTI_vec_unpacks_float_lo,
 372   OTI_vec_unpacku_float_hi,
 373   OTI_vec_unpacku_float_lo,
 374
 375   /* Narrow (demote) and merge the elements of two vectors.  */
 376   OTI_vec_pack_trunc,
 377   OTI_vec_pack_usat,
 378   OTI_vec_pack_ssat,
 379
 380   /* Convert to signed/unsigned integer, narrow and merge elements
 381      of two vectors of floating point elements.  */
 382   OTI_vec_pack_sfix_trunc,
 383   OTI_vec_pack_ufix_trunc,
 384
 385   /* Perform a raise to the power of integer.  */
 386   OTI_powi,
 387
 388   /* Atomic compare and swap.  */
 389   OTI_sync_compare_and_swap,
 390
 391   /* Atomic exchange with acquire semantics.  */
 392   OTI_sync_lock_test_and_set,
 393
 394   /* This second set is atomic operations in which we return the value
 395      that existed in memory before the operation.  */
 396   OTI_sync_old_add,
 397   OTI_sync_old_sub,
 398   OTI_sync_old_ior,
 399   OTI_sync_old_and,
 400   OTI_sync_old_xor,
 401   OTI_sync_old_nand,
 402
 403   /* This third set is atomic operations in which we return the value
 404      that resulted after performing the operation.  */
 405   OTI_sync_new_add,
 406   OTI_sync_new_sub,
 407   OTI_sync_new_ior,
 408   OTI_sync_new_and,
 409   OTI_sync_new_xor,
 410   OTI_sync_new_nand,
 411
 412   OTI_MAX
 413 };
 414
 415 #define ssadd_optab (&optab_table[OTI_ssadd])
 416 #define usadd_optab (&optab_table[OTI_usadd])
 417 #define sssub_optab (&optab_table[OTI_sssub])
 418 #define ussub_optab (&optab_table[OTI_ussub])
 419 #define ssmul_optab (&optab_table[OTI_ssmul])
 420 #define usmul_optab (&optab_table[OTI_usmul])
 421 #define ssdiv_optab (&optab_table[OTI_ssdiv])
 422 #define usdiv_optab (&optab_table[OTI_usdiv])
 423 #define ssneg_optab (&optab_table[OTI_ssneg])
 424 #define usneg_optab (&optab_table[OTI_usneg])
 425 #define ssashl_optab (&optab_table[OTI_ssashl])
 426 #define usashl_optab (&optab_table[OTI_usashl])
 427
 428 #define add_optab (&optab_table[OTI_add])
 429 #define sub_optab (&optab_table[OTI_sub])
 430 #define smul_optab (&optab_table[OTI_smul])
 431 #define addv_optab (&optab_table[OTI_addv])
 432 #define subv_optab (&optab_table[OTI_subv])
 433 #define smul_highpart_optab (&optab_table[OTI_smul_highpart])
 434 #define umul_highpart_optab (&optab_table[OTI_umul_highpart])
 435 #define smul_widen_optab (&optab_table[OTI_smul_widen])
 436 #define umul_widen_optab (&optab_table[OTI_umul_widen])
 437 #define usmul_widen_optab (&optab_table[OTI_usmul_widen])
 438 #define smadd_widen_optab (&optab_table[OTI_smadd_widen])
 439 #define umadd_widen_optab (&optab_table[OTI_umadd_widen])
 440 #define ssmadd_widen_optab (&optab_table[OTI_ssmadd_widen])
 441 #define usmadd_widen_optab (&optab_table[OTI_usmadd_widen])
 442 #define smsub_widen_optab (&optab_table[OTI_smsub_widen])
 443 #define umsub_widen_optab (&optab_table[OTI_umsub_widen])
 444 #define ssmsub_widen_optab (&optab_table[OTI_ssmsub_widen])
 445 #define usmsub_widen_optab (&optab_table[OTI_usmsub_widen])
 446 #define sdiv_optab (&optab_table[OTI_sdiv])
 447 #define smulv_optab (&optab_table[OTI_smulv])
 448 #define sdivv_optab (&optab_table[OTI_sdivv])
 449 #define sdivmod_optab (&optab_table[OTI_sdivmod])
 450 #define udiv_optab (&optab_table[OTI_udiv])
 451 #define udivmod_optab (&optab_table[OTI_udivmod])
 452 #define smod_optab (&optab_table[OTI_smod])
 453 #define umod_optab (&optab_table[OTI_umod])
 454 #define fmod_optab (&optab_table[OTI_fmod])
 455 #define remainder_optab (&optab_table[OTI_remainder])
 456 #define ftrunc_optab (&optab_table[OTI_ftrunc])
 457 #define and_optab (&optab_table[OTI_and])
 458 #define ior_optab (&optab_table[OTI_ior])
 459 #define xor_optab (&optab_table[OTI_xor])
 460 #define ashl_optab (&optab_table[OTI_ashl])
 461 #define lshr_optab (&optab_table[OTI_lshr])
 462 #define ashr_optab (&optab_table[OTI_ashr])
 463 #define rotl_optab (&optab_table[OTI_rotl])
 464 #define rotr_optab (&optab_table[OTI_rotr])
 465 #define vashl_optab (&optab_table[OTI_vashl])
 466 #define vlshr_optab (&optab_table[OTI_vlshr])
 467 #define vashr_optab (&optab_table[OTI_vashr])
 468 #define vrotl_optab (&optab_table[OTI_vrotl])
 469 #define vrotr_optab (&optab_table[OTI_vrotr])
 470 #define smin_optab (&optab_table[OTI_smin])
 471 #define smax_optab (&optab_table[OTI_smax])
 472 #define umin_optab (&optab_table[OTI_umin])
 473 #define umax_optab (&optab_table[OTI_umax])
 474 #define pow_optab (&optab_table[OTI_pow])
 475 #define atan2_optab (&optab_table[OTI_atan2])
 476 #define fma_optab (&optab_table[OTI_fma])
 477 #define fms_optab (&optab_table[OTI_fms])
 478 #define fnma_optab (&optab_table[OTI_fnma])
 479 #define fnms_optab (&optab_table[OTI_fnms])
 480
 481 #define mov_optab (&optab_table[OTI_mov])
 482 #define movstrict_optab (&optab_table[OTI_movstrict])
 483 #define movmisalign_optab (&optab_table[OTI_movmisalign])
 484 #define storent_optab (&optab_table[OTI_storent])
 485
 486 #define neg_optab (&optab_table[OTI_neg])
 487 #define negv_optab (&optab_table[OTI_negv])
 488 #define abs_optab (&optab_table[OTI_abs])
 489 #define absv_optab (&optab_table[OTI_absv])
 490 #define one_cmpl_optab (&optab_table[OTI_one_cmpl])
 491 #define bswap_optab (&optab_table[OTI_bswap])
 492 #define ffs_optab (&optab_table[OTI_ffs])
 493 #define clz_optab (&optab_table[OTI_clz])
 494 #define ctz_optab (&optab_table[OTI_ctz])
 495 #define clrsb_optab (&optab_table[OTI_clrsb])
 496 #define popcount_optab (&optab_table[OTI_popcount])
 497 #define parity_optab (&optab_table[OTI_parity])
 498 #define sqrt_optab (&optab_table[OTI_sqrt])
 499 #define sincos_optab (&optab_table[OTI_sincos])
 500 #define sin_optab (&optab_table[OTI_sin])
 501 #define asin_optab (&optab_table[OTI_asin])
 502 #define cos_optab (&optab_table[OTI_cos])
 503 #define acos_optab (&optab_table[OTI_acos])
 504 #define exp_optab (&optab_table[OTI_exp])
 505 #define exp10_optab (&optab_table[OTI_exp10])
 506 #define exp2_optab (&optab_table[OTI_exp2])
 507 #define expm1_optab (&optab_table[OTI_expm1])
 508 #define ldexp_optab (&optab_table[OTI_ldexp])
 509 #define scalb_optab (&optab_table[OTI_scalb])
 510 #define significand_optab (&optab_table[OTI_significand])
 511 #define logb_optab (&optab_table[OTI_logb])
 512 #define ilogb_optab (&optab_table[OTI_ilogb])
 513 #define log_optab (&optab_table[OTI_log])
 514 #define log10_optab (&optab_table[OTI_log10])
 515 #define log2_optab (&optab_table[OTI_log2])
 516 #define log1p_optab (&optab_table[OTI_log1p])
 517 #define floor_optab (&optab_table[OTI_floor])
 518 #define ceil_optab (&optab_table[OTI_ceil])
 519 #define btrunc_optab (&optab_table[OTI_btrunc])
 520 #define round_optab (&optab_table[OTI_round])
 521 #define nearbyint_optab (&optab_table[OTI_nearbyint])
 522 #define rint_optab (&optab_table[OTI_rint])
 523 #define tan_optab (&optab_table[OTI_tan])
 524 #define atan_optab (&optab_table[OTI_atan])
 525 #define copysign_optab (&optab_table[OTI_copysign])
 526 #define signbit_optab (&optab_table[OTI_signbit])
 527 #define isinf_optab (&optab_table[OTI_isinf])
 528
 529 #define cmp_optab (&optab_table[OTI_cmp])
 530 #define ucmp_optab (&optab_table[OTI_ucmp])
 531
 532 #define eq_optab (&optab_table[OTI_eq])
 533 #define ne_optab (&optab_table[OTI_ne])
 534 #define gt_optab (&optab_table[OTI_gt])
 535 #define ge_optab (&optab_table[OTI_ge])
 536 #define lt_optab (&optab_table[OTI_lt])
 537 #define le_optab (&optab_table[OTI_le])
 538 #define unord_optab (&optab_table[OTI_unord])
 539
 540 #define strlen_optab (&optab_table[OTI_strlen])
 541
 542 #define cbranch_optab (&optab_table[OTI_cbranch])
 543 #define cmov_optab (&optab_table[OTI_cmov])
 544 #define cstore_optab (&optab_table[OTI_cstore])
 545 #define ctrap_optab (&optab_table[OTI_ctrap])
 546
 547 #define push_optab (&optab_table[OTI_push])
 548 #define addcc_optab (&optab_table[OTI_addcc])
 549
 550 #define reduc_smax_optab (&optab_table[OTI_reduc_smax])
 551 #define reduc_umax_optab (&optab_table[OTI_reduc_umax])
 552 #define reduc_smin_optab (&optab_table[OTI_reduc_smin])
 553 #define reduc_umin_optab (&optab_table[OTI_reduc_umin])
 554 #define reduc_splus_optab (&optab_table[OTI_reduc_splus])
 555 #define reduc_uplus_optab (&optab_table[OTI_reduc_uplus])
 556
 557 #define ssum_widen_optab (&optab_table[OTI_ssum_widen])
 558 #define usum_widen_optab (&optab_table[OTI_usum_widen])
 559 #define sdot_prod_optab (&optab_table[OTI_sdot_prod])
 560 #define udot_prod_optab (&optab_table[OTI_udot_prod])
 561
 562 #define vec_set_optab (&optab_table[OTI_vec_set])
 563 #define vec_extract_optab (&optab_table[OTI_vec_extract])
 564 #define vec_init_optab (&optab_table[OTI_vec_init])
 565 #define vec_shl_optab (&optab_table[OTI_vec_shl])
 566 #define vec_shr_optab (&optab_table[OTI_vec_shr])
 567 #define vec_realign_load_optab (&optab_table[OTI_vec_realign_load])
 568 #define vec_widen_umult_hi_optab (&optab_table[OTI_vec_widen_umult_hi])
 569 #define vec_widen_umult_lo_optab (&optab_table[OTI_vec_widen_umult_lo])
 570 #define vec_widen_smult_hi_optab (&optab_table[OTI_vec_widen_smult_hi])
 571 #define vec_widen_smult_lo_optab (&optab_table[OTI_vec_widen_smult_lo])
 572 #define vec_widen_umult_even_optab (&optab_table[OTI_vec_widen_umult_even])
 573 #define vec_widen_umult_odd_optab (&optab_table[OTI_vec_widen_umult_odd])
 574 #define vec_widen_smult_even_optab (&optab_table[OTI_vec_widen_smult_even])
 575 #define vec_widen_smult_odd_optab (&optab_table[OTI_vec_widen_smult_odd])
 576 #define vec_widen_ushiftl_hi_optab (&optab_table[OTI_vec_widen_ushiftl_hi])
 577 #define vec_widen_ushiftl_lo_optab (&optab_table[OTI_vec_widen_ushiftl_lo])
 578 #define vec_widen_sshiftl_hi_optab (&optab_table[OTI_vec_widen_sshiftl_hi])
 579 #define vec_widen_sshiftl_lo_optab (&optab_table[OTI_vec_widen_sshiftl_lo])
 580 #define vec_unpacks_hi_optab (&optab_table[OTI_vec_unpacks_hi])
 581 #define vec_unpacks_lo_optab (&optab_table[OTI_vec_unpacks_lo])
 582 #define vec_unpacku_hi_optab (&optab_table[OTI_vec_unpacku_hi])
 583 #define vec_unpacku_lo_optab (&optab_table[OTI_vec_unpacku_lo])
 584 #define vec_unpacks_float_hi_optab (&optab_table[OTI_vec_unpacks_float_hi])
 585 #define vec_unpacks_float_lo_optab (&optab_table[OTI_vec_unpacks_float_lo])
 586 #define vec_unpacku_float_hi_optab (&optab_table[OTI_vec_unpacku_float_hi])
 587 #define vec_unpacku_float_lo_optab (&optab_table[OTI_vec_unpacku_float_lo])
 588 #define vec_pack_trunc_optab (&optab_table[OTI_vec_pack_trunc])
 589 #define vec_pack_ssat_optab (&optab_table[OTI_vec_pack_ssat])
 590 #define vec_pack_usat_optab (&optab_table[OTI_vec_pack_usat])
 591 #define vec_pack_sfix_trunc_optab (&optab_table[OTI_vec_pack_sfix_trunc])
 592 #define vec_pack_ufix_trunc_optab (&optab_table[OTI_vec_pack_ufix_trunc])
 593
 594 #define powi_optab (&optab_table[OTI_powi])
 595
 596 #define sync_compare_and_swap_optab \
 597   (&optab_table[(int) OTI_sync_compare_and_swap])
 598 #define sync_lock_test_and_set_optab \
 599   (&optab_table[(int) OTI_sync_lock_test_and_set])
 600 #define sync_old_add_optab (&optab_table[(int) OTI_sync_old_add])
 601 #define sync_old_sub_optab (&optab_table[(int) OTI_sync_old_sub])
 602 #define sync_old_ior_optab (&optab_table[(int) OTI_sync_old_ior])
 603 #define sync_old_and_optab (&optab_table[(int) OTI_sync_old_and])
 604 #define sync_old_xor_optab (&optab_table[(int) OTI_sync_old_xor])
 605 #define sync_old_nand_optab (&optab_table[(int) OTI_sync_old_nand])
 606 #define sync_new_add_optab (&optab_table[(int) OTI_sync_new_add])
 607 #define sync_new_sub_optab (&optab_table[(int) OTI_sync_new_sub])
 608 #define sync_new_ior_optab (&optab_table[(int) OTI_sync_new_ior])
 609 #define sync_new_and_optab (&optab_table[(int) OTI_sync_new_and])
 610 #define sync_new_xor_optab (&optab_table[(int) OTI_sync_new_xor])
 611 #define sync_new_nand_optab (&optab_table[(int) OTI_sync_new_nand])
 612
 613 /* Conversion optabs have their own table and indexes.  */
 614 enum convert_optab_index
 615 {
 616   COI_sext,
 617   COI_zext,
 618   COI_trunc,
 619
 620   COI_sfix,
 621   COI_ufix,
 622
 623   COI_sfixtrunc,
 624   COI_ufixtrunc,
 625
 626   COI_sfloat,
 627   COI_ufloat,
 628
 629   COI_lrint,
 630   COI_lround,
 631   COI_lfloor,
 632   COI_lceil,
 633
 634   COI_fract,
 635   COI_fractuns,
 636   COI_satfract,
 637   COI_satfractuns,
 638
 639   COI_vec_load_lanes,
 640   COI_vec_store_lanes,
 641
 642   /* Vector conditional operations.  */
 643   COI_vcond,
 644   COI_vcondu,
 645
 646   COI_MAX
 647 };
 648
 649 #define sext_optab (&convert_optab_table[COI_sext])
 650 #define zext_optab (&convert_optab_table[COI_zext])
 651 #define trunc_optab (&convert_optab_table[COI_trunc])
 652 #define sfix_optab (&convert_optab_table[COI_sfix])
 653 #define ufix_optab (&convert_optab_table[COI_ufix])
 654 #define sfixtrunc_optab (&convert_optab_table[COI_sfixtrunc])
 655 #define ufixtrunc_optab (&convert_optab_table[COI_ufixtrunc])
 656 #define sfloat_optab (&convert_optab_table[COI_sfloat])
 657 #define ufloat_optab (&convert_optab_table[COI_ufloat])
 658 #define lrint_optab (&convert_optab_table[COI_lrint])
 659 #define lround_optab (&convert_optab_table[COI_lround])
 660 #define lfloor_optab (&convert_optab_table[COI_lfloor])
 661 #define lceil_optab (&convert_optab_table[COI_lceil])
 662 #define fract_optab (&convert_optab_table[COI_fract])
 663 #define fractuns_optab (&convert_optab_table[COI_fractuns])
 664 #define satfract_optab (&convert_optab_table[COI_satfract])
 665 #define satfractuns_optab (&convert_optab_table[COI_satfractuns])
 666 #define vec_load_lanes_optab (&convert_optab_table[COI_vec_load_lanes])
 667 #define vec_store_lanes_optab (&convert_optab_table[COI_vec_store_lanes])
 668 #define vcond_optab (&convert_optab_table[(int) COI_vcond])
 669 #define vcondu_optab (&convert_optab_table[(int) COI_vcondu])
 670
 671 /* Contains the optab used for each rtx code.  */
 672 extern optab code_to_optab[NUM_RTX_CODE + 1];
 673
 674 \f
 675 typedef rtx (*rtxfun) (rtx);
 676
 677 /* Enumerates operations that have a named .md pattern associated
 678    with them, but which are not implemented as library functions.  */
 679 enum direct_optab_index
 680 {
 681 #ifdef HAVE_conditional_move
 682   /* Conditional move operations.  */
 683   DOI_movcc,
 684 #endif
 685
 686   /* Operations that use a scratch register to perform input and output
 687      reloads of special objects.  */
 688   DOI_reload_in,
 689   DOI_reload_out,
 690
 691   /* Block move operation.  */
 692   DOI_movmem,
 693
 694   /* Block set operation.  */
 695   DOI_setmem,
 696
 697   /* Various types of block compare operation.  */
 698   DOI_cmpstr,
 699   DOI_cmpstrn,
 700   DOI_cmpmem,
 701
 702   /* Atomic clear with release semantics.  */
 703   DOI_sync_lock_release,
 704
 705   /* Atomic operation with no resulting value.  */
 706   DOI_sync_add,
 707   DOI_sync_sub,
 708   DOI_sync_ior,
 709   DOI_sync_and,
 710   DOI_sync_xor,
 711   DOI_sync_nand,
 712
 713   /* Atomic operations with memory model parameters. */
 714   DOI_atomic_exchange,
 715   DOI_atomic_compare_and_swap,
 716   DOI_atomic_load,
 717   DOI_atomic_store,
 718   DOI_atomic_add_fetch,
 719   DOI_atomic_sub_fetch,
 720   DOI_atomic_and_fetch,
 721   DOI_atomic_nand_fetch,
 722   DOI_atomic_xor_fetch,
 723   DOI_atomic_or_fetch,
 724   DOI_atomic_fetch_add,
 725   DOI_atomic_fetch_sub,
 726   DOI_atomic_fetch_and,
 727   DOI_atomic_fetch_nand,
 728   DOI_atomic_fetch_xor,
 729   DOI_atomic_fetch_or,
 730   DOI_atomic_add,
 731   DOI_atomic_sub,
 732   DOI_atomic_and,
 733   DOI_atomic_nand,
 734   DOI_atomic_xor,
 735   DOI_atomic_or,
 736   DOI_atomic_always_lock_free,
 737   DOI_atomic_is_lock_free,
 738   DOI_atomic_thread_fence,
 739   DOI_atomic_signal_fence,
 740
 741   /* Vector permutation.  */
 742   DOI_vec_perm,
 743   DOI_vec_perm_const,
 744
 745   DOI_MAX
 746 };
 747
 748 /* A structure that says which insn should be used to perform an operation
 749    in a particular mode.  */
 750 struct direct_optab_d
 751 {
 752   struct optab_handlers handlers[NUM_MACHINE_MODES];
 753 };
 754 typedef struct direct_optab_d *direct_optab;
 755
 756 #ifdef HAVE_conditional_move
 757 #define movcc_optab (&direct_optab_table[(int) DOI_movcc])
 758 #endif
 759 #define reload_in_optab (&direct_optab_table[(int) DOI_reload_in])
 760 #define reload_out_optab (&direct_optab_table[(int) DOI_reload_out])
 761 #define movmem_optab (&direct_optab_table[(int) DOI_movmem])
 762 #define setmem_optab (&direct_optab_table[(int) DOI_setmem])
 763 #define cmpstr_optab (&direct_optab_table[(int) DOI_cmpstr])
 764 #define cmpstrn_optab (&direct_optab_table[(int) DOI_cmpstrn])
 765 #define cmpmem_optab (&direct_optab_table[(int) DOI_cmpmem])
 766 #define sync_lock_release_optab \
 767   (&direct_optab_table[(int) DOI_sync_lock_release])
 768 #define sync_add_optab (&direct_optab_table[(int) DOI_sync_add])
 769 #define sync_sub_optab (&direct_optab_table[(int) DOI_sync_sub])
 770 #define sync_ior_optab (&direct_optab_table[(int) DOI_sync_ior])
 771 #define sync_and_optab (&direct_optab_table[(int) DOI_sync_and])
 772 #define sync_xor_optab (&direct_optab_table[(int) DOI_sync_xor])
 773 #define sync_nand_optab (&direct_optab_table[(int) DOI_sync_nand])
 774
 775 #define atomic_exchange_optab \
 776   (&direct_optab_table[(int) DOI_atomic_exchange])
 777 #define atomic_compare_and_swap_optab \
 778   (&direct_optab_table[(int) DOI_atomic_compare_and_swap])
 779 #define atomic_load_optab \
 780   (&direct_optab_table[(int) DOI_atomic_load])
 781 #define atomic_store_optab \
 782   (&direct_optab_table[(int) DOI_atomic_store])
 783 #define atomic_add_fetch_optab \
 784   (&direct_optab_table[(int) DOI_atomic_add_fetch])
 785 #define atomic_sub_fetch_optab \
 786   (&direct_optab_table[(int) DOI_atomic_sub_fetch])
 787 #define atomic_and_fetch_optab \
 788   (&direct_optab_table[(int) DOI_atomic_and_fetch])
 789 #define atomic_nand_fetch_optab \
 790   (&direct_optab_table[(int) DOI_atomic_nand_fetch])
 791 #define atomic_xor_fetch_optab \
 792   (&direct_optab_table[(int) DOI_atomic_xor_fetch])
 793 #define atomic_or_fetch_optab \
 794   (&direct_optab_table[(int) DOI_atomic_or_fetch])
 795 #define atomic_fetch_add_optab \
 796   (&direct_optab_table[(int) DOI_atomic_fetch_add])
 797 #define atomic_fetch_sub_optab \
 798   (&direct_optab_table[(int) DOI_atomic_fetch_sub])
 799 #define atomic_fetch_and_optab \
 800   (&direct_optab_table[(int) DOI_atomic_fetch_and])
 801 #define atomic_fetch_nand_optab \
 802   (&direct_optab_table[(int) DOI_atomic_fetch_nand])
 803 #define atomic_fetch_xor_optab \
 804   (&direct_optab_table[(int) DOI_atomic_fetch_xor])
 805 #define atomic_fetch_or_optab \
 806   (&direct_optab_table[(int) DOI_atomic_fetch_or])
 807 #define atomic_add_optab \
 808   (&direct_optab_table[(int) DOI_atomic_add])
 809 #define atomic_sub_optab \
 810   (&direct_optab_table[(int) DOI_atomic_sub])
 811 #define atomic_and_optab \
 812   (&direct_optab_table[(int) DOI_atomic_and])
 813 #define atomic_nand_optab \
 814   (&direct_optab_table[(int) DOI_atomic_nand])
 815 #define atomic_xor_optab \
 816   (&direct_optab_table[(int) DOI_atomic_xor])
 817 #define atomic_or_optab \
 818   (&direct_optab_table[(int) DOI_atomic_or])
 819 #define atomic_always_lock_free_optab \
 820   (&direct_optab_table[(int) DOI_atomic_always_lock_free])
 821 #define atomic_is_lock_free_optab \
 822   (&direct_optab_table[(int) DOI_atomic_is_lock_free])
 823 #define atomic_thread_fence_optab \
 824   (&direct_optab_table[(int) DOI_atomic_thread_fence])
 825 #define atomic_signal_fence_optab \
 826   (&direct_optab_table[(int) DOI_atomic_signal_fence])
 827
 828 #define vec_perm_optab (&direct_optab_table[DOI_vec_perm])
 829 #define vec_perm_const_optab (&direct_optab_table[(int) DOI_vec_perm_const])
 830 \f
 831 /* Target-dependent globals.  */
 832 struct target_optabs {
 833   /* Tables of patterns that may have an associated libcall.  */
 834   struct optab_d x_optab_table[(int) OTI_MAX];
 835
 836   /* Tables of patterns for converting one mode to another.  */
 837   struct convert_optab_d x_convert_optab_table[(int) COI_MAX];
 838
 839   /* Tables of patterns for direct optabs (i.e. those which cannot be
 840      implemented using a libcall).  */
 841   struct direct_optab_d x_direct_optab_table[(int) DOI_MAX];
 842 };
 843
 844 extern struct target_optabs default_target_optabs;
 845 #if SWITCHABLE_TARGET
 846 extern struct target_optabs *this_target_optabs;
 847 #else
 848 #define this_target_optabs (&default_target_optabs)
 849 #endif
 850
 851 #define optab_table \
 852   (this_target_optabs->x_optab_table)
 853 #define convert_optab_table \
 854   (this_target_optabs->x_convert_optab_table)
 855 #define direct_optab_table \
 856   (this_target_optabs->x_direct_optab_table)
 857 \f
 858 /* Define functions given in optabs.c.  */
 859
 860 extern rtx expand_widen_pattern_expr (sepops ops, rtx op0, rtx op1, rtx wide_op,
 861                                       rtx target, int unsignedp);
 862
 863 extern rtx expand_ternary_op (enum machine_mode mode, optab ternary_optab,
 864                               rtx op0, rtx op1, rtx op2, rtx target,
 865                               int unsignedp);
 866
 867 /* Expand a binary operation given optab and rtx operands.  */
 868 extern rtx expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
 869                          enum optab_methods);
 870
 871 extern rtx simplify_expand_binop (enum machine_mode mode, optab binoptab,
 872                                   rtx op0, rtx op1, rtx target, int unsignedp,
 873                                   enum optab_methods methods);
 874
 875 extern bool force_expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
 876                                 enum optab_methods);
 877
 878 /* Expand a binary operation with both signed and unsigned forms.  */
 879 extern rtx sign_expand_binop (enum machine_mode, optab, optab, rtx, rtx,
 880                               rtx, int, enum optab_methods);
 881
 882 /* Generate code to perform an operation on one operand with two results.  */
 883 extern int expand_twoval_unop (optab, rtx, rtx, rtx, int);
 884
 885 /* Generate code to perform an operation on two operands with two results.  */
 886 extern int expand_twoval_binop (optab, rtx, rtx, rtx, rtx, int);
 887
 888 /* Generate code to perform an operation on two operands with two
 889    results, using a library function.  */
 890 extern bool expand_twoval_binop_libfunc (optab, rtx, rtx, rtx, rtx,
 891                                          enum rtx_code);
 892
 893 /* Expand a unary arithmetic operation given optab rtx operand.  */
 894 extern rtx expand_unop (enum machine_mode, optab, rtx, rtx, int);
 895
 896 /* Expand the absolute value operation.  */
 897 extern rtx expand_abs_nojump (enum machine_mode, rtx, rtx, int);
 898 extern rtx expand_abs (enum machine_mode, rtx, rtx, int, int);
 899
 900 /* Expand the one's complement absolute value operation.  */
 901 extern rtx expand_one_cmpl_abs_nojump (enum machine_mode, rtx, rtx);
 902
 903 /* Expand the copysign operation.  */
 904 extern rtx expand_copysign (rtx, rtx, rtx);
 905
 906 /* Generate an instruction with a given INSN_CODE with an output and
 907    an input.  */
 908 extern void emit_unop_insn (enum insn_code, rtx, rtx, enum rtx_code);
 909 extern bool maybe_emit_unop_insn (enum insn_code, rtx, rtx, enum rtx_code);
 910
 911 /* Find a widening optab even if it doesn't widen as much as we want.  */
 912 #define find_widening_optab_handler(A,B,C,D) \
 913   find_widening_optab_handler_and_mode (A, B, C, D, NULL)
 914 extern enum insn_code find_widening_optab_handler_and_mode (optab,
 915                                                             enum machine_mode,
 916                                                             enum machine_mode,
 917                                                             int,
 918                                                             enum machine_mode *);
 919
 920 /* An extra flag to control optab_for_tree_code's behavior.  This is needed to
 921    distinguish between machines with a vector shift that takes a scalar for the
 922    shift amount vs. machines that take a vector for the shift amount.  */
 923 enum optab_subtype
 924 {
 925   optab_default,
 926   optab_scalar,
 927   optab_vector
 928 };
 929
 930 /* Return the optab used for computing the given operation on the type given by
 931    the second argument.  The third argument distinguishes between the types of
 932    vector shifts and rotates */
 933 extern optab optab_for_tree_code (enum tree_code, const_tree, enum optab_subtype);
 934
 935 /* The various uses that a comparison can have; used by can_compare_p:
 936    jumps, conditional moves, store flag operations.  */
 937 enum can_compare_purpose
 938 {
 939   ccp_jump,
 940   ccp_cmov,
 941   ccp_store_flag
 942 };
 943
 944 /* Nonzero if a compare of mode MODE can be done straightforwardly
 945    (without splitting it into pieces).  */
 946 extern int can_compare_p (enum rtx_code, enum machine_mode,
 947                           enum can_compare_purpose);
 948
 949 /* Return the INSN_CODE to use for an extend operation.  */
 950 extern enum insn_code can_extend_p (enum machine_mode, enum machine_mode, int);
 951
 952 /* Generate the body of an insn to extend Y (with mode MFROM)
 953    into X (with mode MTO).  Do zero-extension if UNSIGNEDP is nonzero.  */
 954 extern rtx gen_extend_insn (rtx, rtx, enum machine_mode,
 955                             enum machine_mode, int);
 956
 957 /* Call this to reset the function entry for one optab.  */
 958 extern void set_optab_libfunc (optab, enum machine_mode, const char *);
 959 extern void set_conv_libfunc (convert_optab, enum machine_mode,
 960                               enum machine_mode, const char *);
 961
 962 /* Call this to install all of the __sync libcalls up to size MAX.  */
 963 extern void init_sync_libfuncs (int max);
 964
 965 /* Generate code for a FIXED_CONVERT_EXPR.  */
 966 extern void expand_fixed_convert (rtx, rtx, int, int);
 967
 968 /* Generate code for a FLOAT_EXPR.  */
 969 extern void expand_float (rtx, rtx, int);
 970
 971 /* Return the insn_code for a FLOAT_EXPR.  */
 972 enum insn_code can_float_p (enum machine_mode, enum machine_mode, int);
 973
 974 /* Return true if there is an inline compare and swap pattern.  */
 975 extern bool can_compare_and_swap_p (enum machine_mode, bool);
 976
 977 /* Return true if there is an inline atomic exchange pattern.  */
 978 extern bool can_atomic_exchange_p (enum machine_mode, bool);
 979
 980 /* Generate code for a compare and swap.  */
 981 extern bool expand_atomic_compare_and_swap (rtx *, rtx *, rtx, rtx, rtx, bool,
 982                                             enum memmodel, enum memmodel);
 983
 984 /* Generate memory barriers.  */
 985 extern void expand_mem_thread_fence (enum memmodel);
 986 extern void expand_mem_signal_fence (enum memmodel);
 987
 988 /* Check whether an operation represented by the code CODE is a
 989    convert operation that is supported by the target platform in
 990    vector form */
 991 bool supportable_convert_operation (enum tree_code, tree, tree, tree *,
 992                                     enum tree_code *);
 993
 994 /* Generate code for a FIX_EXPR.  */
 995 extern void expand_fix (rtx, rtx, int);
 996
 997 /* Generate code for float to integral conversion.  */
 998 extern bool expand_sfix_optab (rtx, rtx, convert_optab);
 999
1000 /* Generate code for a widening multiply.  */
1001 extern rtx expand_widening_mult (enum machine_mode, rtx, rtx, rtx, int, optab);
1002
1003 /* Return tree if target supports vector operations for COND_EXPR.  */
1004 bool expand_vec_cond_expr_p (tree, tree);
1005
1006 /* Generate code for VEC_COND_EXPR.  */
1007 extern rtx expand_vec_cond_expr (tree, tree, tree, tree, rtx);
1008 /* Generate code for VEC_LSHIFT_EXPR and VEC_RSHIFT_EXPR.  */
1009 extern rtx expand_vec_shift_expr (sepops, rtx);
1010
1011 /* Return tree if target supports vector operations for VEC_PERM_EXPR.  */
1012 extern bool can_vec_perm_p (enum machine_mode, bool, const unsigned char *);
1013
1014 /* Generate code for VEC_PERM_EXPR.  */
1015 extern rtx expand_vec_perm (enum machine_mode, rtx, rtx, rtx, rtx);
1016
1017 /* Return non-zero if target supports a given highpart multiplication.  */
1018 extern int can_mult_highpart_p (enum machine_mode, bool);
1019
1020 /* Generate code for MULT_HIGHPART_EXPR.  */
1021 extern rtx expand_mult_highpart (enum machine_mode, rtx, rtx, rtx, bool);
1022
1023 /* Return the insn used to implement mode MODE of OP, or CODE_FOR_nothing
1024    if the target does not have such an insn.  */
1025
1026 static inline enum insn_code
1027 optab_handler (optab op, enum machine_mode mode)
1028 {
1029   return op->handlers[(int) mode].insn_code;
1030 }
1031
1032 /* Like optab_handler, but for widening_operations that have a TO_MODE and
1033   a FROM_MODE.  */
1034
1035 static inline enum insn_code
1036 widening_optab_handler (optab op, enum machine_mode to_mode,
1037                         enum machine_mode from_mode)
1038 {
1039   if (to_mode == from_mode || from_mode == VOIDmode)
1040     return optab_handler (op, to_mode);
1041
1042   if (op->widening)
1043     return op->widening->handlers[(int) to_mode][(int) from_mode].insn_code;
1044
1045   return CODE_FOR_nothing;
1046 }
1047
1048 /* Record that insn CODE should be used to implement mode MODE of OP.  */
1049
1050 static inline void
1051 set_optab_handler (optab op, enum machine_mode mode, enum insn_code code)
1052 {
1053   op->handlers[(int) mode].insn_code = code;
1054 }
1055
1056 /* Like set_optab_handler, but for widening operations that have a TO_MODE
1057    and a FROM_MODE.  */
1058
1059 static inline void
1060 set_widening_optab_handler (optab op, enum machine_mode to_mode,
1061                             enum machine_mode from_mode, enum insn_code code)
1062 {
1063   if (to_mode == from_mode)
1064     set_optab_handler (op, to_mode, code);
1065   else
1066     {
1067       if (op->widening == NULL)
1068         op->widening = XCNEW (struct widening_optab_handlers);
1069
1070       op->widening->handlers[(int) to_mode][(int) from_mode].insn_code = code;
1071     }
1072 }
1073
1074 /* Return the insn used to perform conversion OP from mode FROM_MODE
1075    to mode TO_MODE; return CODE_FOR_nothing if the target does not have
1076    such an insn.  */
1077
1078 static inline enum insn_code
1079 convert_optab_handler (convert_optab op, enum machine_mode to_mode,
1080                        enum machine_mode from_mode)
1081 {
1082   return op->handlers[(int) to_mode][(int) from_mode].insn_code;
1083 }
1084
1085 /* Record that insn CODE should be used to perform conversion OP
1086    from mode FROM_MODE to mode TO_MODE.  */
1087
1088 static inline void
1089 set_convert_optab_handler (convert_optab op, enum machine_mode to_mode,
1090                            enum machine_mode from_mode, enum insn_code code)
1091 {
1092   op->handlers[(int) to_mode][(int) from_mode].insn_code = code;
1093 }
1094
1095 /* Return the insn used to implement mode MODE of OP, or CODE_FOR_nothing
1096    if the target does not have such an insn.  */
1097
1098 static inline enum insn_code
1099 direct_optab_handler (direct_optab op, enum machine_mode mode)
1100 {
1101   return op->handlers[(int) mode].insn_code;
1102 }
1103
1104 /* Record that insn CODE should be used to implement mode MODE of OP.  */
1105
1106 static inline void
1107 set_direct_optab_handler (direct_optab op, enum machine_mode mode,
1108                           enum insn_code code)
1109 {
1110   op->handlers[(int) mode].insn_code = code;
1111 }
1112
1113 /* Return true if UNOPTAB is for a trapping-on-overflow operation.  */
1114
1115 static inline bool
1116 trapv_unoptab_p (optab unoptab)
1117 {
1118   return (unoptab == negv_optab
1119           || unoptab == absv_optab);
1120 }
1121
1122 /* Return true if BINOPTAB is for a trapping-on-overflow operation.  */
1123
1124 static inline bool
1125 trapv_binoptab_p (optab binoptab)
1126 {
1127   return (binoptab == addv_optab
1128           || binoptab == subv_optab
1129           || binoptab == smulv_optab);
1130 }
1131
1132 extern rtx optab_libfunc (optab optab, enum machine_mode mode);
1133 extern rtx convert_optab_libfunc (convert_optab optab, enum machine_mode mode1,
1134                                   enum machine_mode mode2);
1135
1136 extern bool insn_operand_matches (enum insn_code icode, unsigned int opno,
1137                                   rtx operand);
1138
1139 /* Describes the type of an expand_operand.  Each value is associated
1140    with a create_*_operand function; see the comments above those
1141    functions for details.  */
1142 enum expand_operand_type {
1143   EXPAND_FIXED,
1144   EXPAND_OUTPUT,
1145   EXPAND_INPUT,
1146   EXPAND_CONVERT_TO,
1147   EXPAND_CONVERT_FROM,
1148   EXPAND_ADDRESS,
1149   EXPAND_INTEGER
1150 };
1151
1152 /* Information about an operand for instruction expansion.  */
1153 struct expand_operand {
1154   /* The type of operand.  */
1155   ENUM_BITFIELD (expand_operand_type) type : 8;
1156
1157   /* True if any conversion should treat VALUE as being unsigned
1158      rather than signed.  Only meaningful for certain types.  */
1159   unsigned int unsigned_p : 1;
1160
1161   /* Unused; available for future use.  */
1162   unsigned int unused : 7;
1163
1164   /* The mode passed to the convert_*_operand function.  It has a
1165      type-dependent meaning.  */
1166   ENUM_BITFIELD (machine_mode) mode : 16;
1167
1168   /* The value of the operand.  */
1169   rtx value;
1170 };
1171
1172 /* Initialize OP with the given fields.  Initialise the other fields
1173    to their default values.  */
1174
1175 static inline void
1176 create_expand_operand (struct expand_operand *op,
1177                        enum expand_operand_type type,
1178                        rtx value, enum machine_mode mode,
1179                        bool unsigned_p)
1180 {
1181   op->type = type;
1182   op->unsigned_p = unsigned_p;
1183   op->unused = 0;
1184   op->mode = mode;
1185   op->value = value;
1186 }
1187
1188 /* Make OP describe an operand that must use rtx X, even if X is volatile.  */
1189
1190 static inline void
1191 create_fixed_operand (struct expand_operand *op, rtx x)
1192 {
1193   create_expand_operand (op, EXPAND_FIXED, x, VOIDmode, false);
1194 }
1195
1196 /* Make OP describe an output operand that must have mode MODE.
1197    X, if nonnull, is a suggestion for where the output should be stored.
1198    It is OK for VALUE to be inconsistent with MODE, although it will just
1199    be ignored in that case.  */
1200
1201 static inline void
1202 create_output_operand (struct expand_operand *op, rtx x,
1203                        enum machine_mode mode)
1204 {
1205   create_expand_operand (op, EXPAND_OUTPUT, x, mode, false);
1206 }
1207
1208 /* Make OP describe an input operand that must have mode MODE and
1209    value VALUE; MODE cannot be VOIDmode.  The backend may request that
1210    VALUE be copied into a different kind of rtx before being passed
1211    as an operand.  */
1212
1213 static inline void
1214 create_input_operand (struct expand_operand *op, rtx value,
1215                       enum machine_mode mode)
1216 {
1217   create_expand_operand (op, EXPAND_INPUT, value, mode, false);
1218 }
1219
1220 /* Like create_input_operand, except that VALUE must first be converted
1221    to mode MODE.  UNSIGNED_P says whether VALUE is unsigned.  */
1222
1223 static inline void
1224 create_convert_operand_to (struct expand_operand *op, rtx value,
1225                            enum machine_mode mode, bool unsigned_p)
1226 {
1227   create_expand_operand (op, EXPAND_CONVERT_TO, value, mode, unsigned_p);
1228 }
1229
1230 /* Make OP describe an input operand that should have the same value
1231    as VALUE, after any mode conversion that the backend might request.
1232    If VALUE is a CONST_INT, it should be treated as having mode MODE.
1233    UNSIGNED_P says whether VALUE is unsigned.  */
1234
1235 static inline void
1236 create_convert_operand_from (struct expand_operand *op, rtx value,
1237                              enum machine_mode mode, bool unsigned_p)
1238 {
1239   create_expand_operand (op, EXPAND_CONVERT_FROM, value, mode, unsigned_p);
1240 }
1241
1242 extern void create_convert_operand_from_type (struct expand_operand *op,
1243                                               rtx value, tree type);
1244
1245 /* Make OP describe an input Pmode address operand.  VALUE is the value
1246    of the address, but it may need to be converted to Pmode first.  */
1247
1248 static inline void
1249 create_address_operand (struct expand_operand *op, rtx value)
1250 {
1251   create_expand_operand (op, EXPAND_ADDRESS, value, Pmode, false);
1252 }
1253
1254 /* Make OP describe an input operand that has value INTVAL and that has
1255    no inherent mode.  This function should only be used for operands that
1256    are always expand-time constants.  The backend may request that INTVAL
1257    be copied into a different kind of rtx, but it must specify the mode
1258    of that rtx if so.  */
1259
1260 static inline void
1261 create_integer_operand (struct expand_operand *op, HOST_WIDE_INT intval)
1262 {
1263   create_expand_operand (op, EXPAND_INTEGER, GEN_INT (intval), VOIDmode, false);
1264 }
1265
1266 extern bool valid_multiword_target_p (rtx);
1267
1268 extern bool maybe_legitimize_operands (enum insn_code icode,
1269                                        unsigned int opno, unsigned int nops,
1270                                        struct expand_operand *ops);
1271 extern rtx maybe_gen_insn (enum insn_code icode, unsigned int nops,
1272                            struct expand_operand *ops);
1273 extern bool maybe_expand_insn (enum insn_code icode, unsigned int nops,
1274                                struct expand_operand *ops);
1275 extern bool maybe_expand_jump_insn (enum insn_code icode, unsigned int nops,
1276                                     struct expand_operand *ops);
1277 extern void expand_insn (enum insn_code icode, unsigned int nops,
1278                          struct expand_operand *ops);
1279 extern void expand_jump_insn (enum insn_code icode, unsigned int nops,
1280                               struct expand_operand *ops);
1281
1282 extern rtx prepare_operand (enum insn_code, rtx, int, enum machine_mode,
1283                             enum machine_mode, int);
1284
1285 #endif /* GCC_OPTABS_H */