gcc/optabs.h

   1 /* Definitions for code generation pass of GNU compiler.
   2    Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
   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 `lib_call' slot is the name of the library function that
  33    can be used to perform the operation.
  34
  35    A few optabs, such as move_optab, are used by special code.  */
  36
  37 struct optab_handlers
  38 {
  39   /* I - CODE_FOR_nothing, where I is either the insn code of the
  40      associated insn generator or CODE_FOR_nothing if there is no such
  41      insn on the target machine.  */
  42   int insn_code;
  43 };
  44
  45 struct widening_optab_handlers
  46 {
  47   struct optab_handlers handlers[NUM_MACHINE_MODES][NUM_MACHINE_MODES];
  48 };
  49
  50 struct optab_d
  51 {
  52   enum rtx_code code;
  53   char libcall_suffix;
  54   const char *libcall_basename;
  55   void (*libcall_gen)(struct optab_d *, const char *name, char suffix,
  56                       enum machine_mode);
  57   struct optab_handlers handlers[NUM_MACHINE_MODES];
  58   struct widening_optab_handlers *widening;
  59 };
  60 typedef struct optab_d * optab;
  61
  62 /* A convert_optab is for some sort of conversion operation between
  63    modes.  The first array index is the destination mode, the second
  64    is the source mode.  */
  65 struct convert_optab_d
  66 {
  67   enum rtx_code code;
  68   const char *libcall_basename;
  69   void (*libcall_gen)(struct convert_optab_d *, const char *name,
  70                       enum machine_mode,
  71                       enum machine_mode);
  72   struct optab_handlers handlers[NUM_MACHINE_MODES][NUM_MACHINE_MODES];
  73 };
  74 typedef struct convert_optab_d *convert_optab;
  75
  76 /* Given an enum insn_code, access the function to construct
  77    the body of that kind of insn.  */
  78 #define GEN_FCN(CODE) (insn_data[CODE].genfun)
  79
  80 /* Enumeration of valid indexes into optab_table.  */
  81 enum optab_index
  82 {
  83   /* Fixed-point operators with signed/unsigned saturation */
  84   OTI_ssadd,
  85   OTI_usadd,
  86   OTI_sssub,
  87   OTI_ussub,
  88   OTI_ssmul,
  89   OTI_usmul,
  90   OTI_ssdiv,
  91   OTI_usdiv,
  92   OTI_ssneg,
  93   OTI_usneg,
  94   OTI_ssashl,
  95   OTI_usashl,
  96
  97   OTI_add,
  98   OTI_addv,
  99   OTI_sub,
 100   OTI_subv,
 101
 102   /* Signed and fp multiply */
 103   OTI_smul,
 104   OTI_smulv,
 105   /* Signed multiply, return high word */
 106   OTI_smul_highpart,
 107   OTI_umul_highpart,
 108   /* Signed multiply with result one machine mode wider than args */
 109   OTI_smul_widen,
 110   OTI_umul_widen,
 111   /* Widening multiply of one unsigned and one signed operand.  */
 112   OTI_usmul_widen,
 113   /* Signed multiply and add with the result and addend one machine mode
 114      wider than the multiplicand and multiplier.  */
 115   OTI_smadd_widen,
 116   /* Unsigned multiply and add with the result and addend one machine mode
 117      wider than the multiplicand and multiplier.  */
 118   OTI_umadd_widen,
 119   /* Signed multiply and add with the result and addend one machine mode
 120      wider than the multiplicand and multiplier.
 121      All involved operations are saturating.  */
 122   OTI_ssmadd_widen,
 123   /* Unsigned multiply and add with the result and addend one machine mode
 124      wider than the multiplicand and multiplier.
 125      All involved operations are saturating.  */
 126   OTI_usmadd_widen,
 127   /* Signed multiply and subtract the result and minuend one machine mode
 128      wider than the multiplicand and multiplier.  */
 129   OTI_smsub_widen,
 130   /* Unsigned multiply and subtract the result and minuend one machine mode
 131      wider than the multiplicand and multiplier.  */
 132   OTI_umsub_widen,
 133   /* Signed multiply and subtract the result and minuend one machine mode
 134      wider than the multiplicand and multiplier.
 135      All involved operations are saturating.  */
 136   OTI_ssmsub_widen,
 137   /* Unsigned multiply and subtract the result and minuend one machine mode
 138      wider than the multiplicand and multiplier.
 139      All involved operations are saturating.  */
 140   OTI_usmsub_widen,
 141
 142   /* Signed divide */
 143   OTI_sdiv,
 144   OTI_sdivv,
 145   /* Signed divide-and-remainder in one */
 146   OTI_sdivmod,
 147   OTI_udiv,
 148   OTI_udivmod,
 149   /* Signed remainder */
 150   OTI_smod,
 151   OTI_umod,
 152   /* Floating point remainder functions */
 153   OTI_fmod,
 154   OTI_remainder,
 155   /* Convert float to integer in float fmt */
 156   OTI_ftrunc,
 157
 158   /* Logical and */
 159   OTI_and,
 160   /* Logical or */
 161   OTI_ior,
 162   /* Logical xor */
 163   OTI_xor,
 164
 165   /* Arithmetic shift left */
 166   OTI_ashl,
 167   /* Logical shift right */
 168   OTI_lshr,
 169   /* Arithmetic shift right */
 170   OTI_ashr,
 171   /* Rotate left */
 172   OTI_rotl,
 173   /* Rotate right */
 174   OTI_rotr,
 175
 176   /* Arithmetic shift left of vector by vector */
 177   OTI_vashl,
 178   /* Logical shift right of vector by vector */
 179   OTI_vlshr,
 180   /* Arithmetic shift right of vector by vector */
 181   OTI_vashr,
 182   /* Rotate left of vector by vector */
 183   OTI_vrotl,
 184   /* Rotate right of vector by vector */
 185   OTI_vrotr,
 186
 187   /* Signed and floating-point minimum value */
 188   OTI_smin,
 189   /* Signed and floating-point maximum value */
 190   OTI_smax,
 191   /* Unsigned minimum value */
 192   OTI_umin,
 193   /* Unsigned maximum value */
 194   OTI_umax,
 195   /* Power */
 196   OTI_pow,
 197   /* Arc tangent of y/x */
 198   OTI_atan2,
 199   /* Floating multiply/add */
 200   OTI_fma,
 201   OTI_fms,
 202   OTI_fnma,
 203   OTI_fnms,
 204
 205   /* Move instruction.  */
 206   OTI_mov,
 207   /* Move, preserving high part of register.  */
 208   OTI_movstrict,
 209   /* Move, with a misaligned memory.  */
 210   OTI_movmisalign,
 211   /* Nontemporal store.  */
 212   OTI_storent,
 213
 214   /* Unary operations */
 215   /* Negation */
 216   OTI_neg,
 217   OTI_negv,
 218   /* Abs value */
 219   OTI_abs,
 220   OTI_absv,
 221   /* Byteswap */
 222   OTI_bswap,
 223   /* Bitwise not */
 224   OTI_one_cmpl,
 225   /* Bit scanning and counting */
 226   OTI_ffs,
 227   OTI_clz,
 228   OTI_ctz,
 229   OTI_clrsb,
 230   OTI_popcount,
 231   OTI_parity,
 232   /* Square root */
 233   OTI_sqrt,
 234   /* Sine-Cosine */
 235   OTI_sincos,
 236   /* Sine */
 237   OTI_sin,
 238   /* Inverse sine */
 239   OTI_asin,
 240   /* Cosine */
 241   OTI_cos,
 242   /* Inverse cosine */
 243   OTI_acos,
 244   /* Exponential */
 245   OTI_exp,
 246   /* Base-10 Exponential */
 247   OTI_exp10,
 248   /* Base-2 Exponential */
 249   OTI_exp2,
 250   /* Exponential - 1*/
 251   OTI_expm1,
 252   /* Load exponent of a floating point number */
 253   OTI_ldexp,
 254   /* Multiply floating-point number by integral power of radix */
 255   OTI_scalb,
 256   /* Mantissa of a floating-point number */
 257   OTI_significand,
 258   /* Radix-independent exponent */
 259   OTI_logb,
 260   OTI_ilogb,
 261   /* Natural Logarithm */
 262   OTI_log,
 263   /* Base-10 Logarithm */
 264   OTI_log10,
 265   /* Base-2 Logarithm */
 266   OTI_log2,
 267   /* logarithm of 1 plus argument */
 268   OTI_log1p,
 269   /* Rounding functions */
 270   OTI_floor,
 271   OTI_ceil,
 272   OTI_btrunc,
 273   OTI_round,
 274   OTI_nearbyint,
 275   OTI_rint,
 276   /* Tangent */
 277   OTI_tan,
 278   /* Inverse tangent */
 279   OTI_atan,
 280   /* Copy sign */
 281   OTI_copysign,
 282   /* Signbit */
 283   OTI_signbit,
 284   /* Test for infinite value */
 285   OTI_isinf,
 286
 287   /* Compare insn; two operands.  Used only for libcalls.  */
 288   OTI_cmp,
 289   OTI_ucmp,
 290
 291   /* Floating point comparison optabs - used primarily for libfuncs */
 292   OTI_eq,
 293   OTI_ne,
 294   OTI_gt,
 295   OTI_ge,
 296   OTI_lt,
 297   OTI_le,
 298   OTI_unord,
 299
 300   /* String length */
 301   OTI_strlen,
 302
 303   /* Combined compare & jump/move/store flags/trap operations.  */
 304   OTI_cbranch,
 305   OTI_cmov,
 306   OTI_cstore,
 307   OTI_ctrap,
 308
 309   /* Push instruction.  */
 310   OTI_push,
 311
 312   /* Conditional add instruction.  */
 313   OTI_addcc,
 314
 315   /* Reduction operations on a vector operand.  */
 316   OTI_reduc_smax,
 317   OTI_reduc_umax,
 318   OTI_reduc_smin,
 319   OTI_reduc_umin,
 320   OTI_reduc_splus,
 321   OTI_reduc_uplus,
 322
 323   /* Summation, with result machine mode one or more wider than args.  */
 324   OTI_ssum_widen,
 325   OTI_usum_widen,
 326
 327   /* Dot product, with result machine mode one or more wider than args.  */
 328   OTI_sdot_prod,
 329   OTI_udot_prod,
 330
 331   /* Set specified field of vector operand.  */
 332   OTI_vec_set,
 333   /* Extract specified field of vector operand.  */
 334   OTI_vec_extract,
 335   /* Extract even/odd fields of vector operands.  */
 336   OTI_vec_extract_even,
 337   OTI_vec_extract_odd,
 338   /* Interleave fields of vector operands.  */
 339   OTI_vec_interleave_high,
 340   OTI_vec_interleave_low,
 341   /* Initialize vector operand.  */
 342   OTI_vec_init,
 343   /* Whole vector shift. The shift amount is in bits.  */
 344   OTI_vec_shl,
 345   OTI_vec_shr,
 346   /* Extract specified elements from vectors, for vector load.  */
 347   OTI_vec_realign_load,
 348   /* Widening multiplication.
 349      The high/low part of the resulting vector of products is returned.  */
 350   OTI_vec_widen_umult_hi,
 351   OTI_vec_widen_umult_lo,
 352   OTI_vec_widen_smult_hi,
 353   OTI_vec_widen_smult_lo,
 354   /* Widening shift left.
 355      The high/low part of the resulting vector is returned.  */
 356   OTI_vec_widen_ushiftl_hi,
 357   OTI_vec_widen_ushiftl_lo,
 358   OTI_vec_widen_sshiftl_hi,
 359   OTI_vec_widen_sshiftl_lo,
 360   /* Extract and widen the high/low part of a vector of signed or
 361      floating point elements.  */
 362   OTI_vec_unpacks_hi,
 363   OTI_vec_unpacks_lo,
 364   /* Extract and widen the high/low part of a vector of unsigned
 365      elements.  */
 366   OTI_vec_unpacku_hi,
 367   OTI_vec_unpacku_lo,
 368
 369   /* Extract, convert to floating point and widen the high/low part of
 370      a vector of signed or unsigned integer elements.  */
 371   OTI_vec_unpacks_float_hi,
 372   OTI_vec_unpacks_float_lo,
 373   OTI_vec_unpacku_float_hi,
 374   OTI_vec_unpacku_float_lo,
 375
 376   /* Narrow (demote) and merge the elements of two vectors.  */
 377   OTI_vec_pack_trunc,
 378   OTI_vec_pack_usat,
 379   OTI_vec_pack_ssat,
 380
 381   /* Convert to signed/unsigned integer, narrow and merge elements
 382      of two vectors of floating point elements.  */
 383   OTI_vec_pack_sfix_trunc,
 384   OTI_vec_pack_ufix_trunc,
 385
 386   /* Perform a raise to the power of integer.  */
 387   OTI_powi,
 388
 389   /* Atomic compare and swap.  */
 390   OTI_sync_compare_and_swap,
 391
 392   /* Atomic exchange with acquire semantics.  */
 393   OTI_sync_lock_test_and_set,
 394
 395   /* This second set is atomic operations in which we return the value
 396      that existed in memory before the operation.  */
 397   OTI_sync_old_add,
 398   OTI_sync_old_sub,
 399   OTI_sync_old_ior,
 400   OTI_sync_old_and,
 401   OTI_sync_old_xor,
 402   OTI_sync_old_nand,
 403
 404   /* This third set is atomic operations in which we return the value
 405      that resulted after performing the operation.  */
 406   OTI_sync_new_add,
 407   OTI_sync_new_sub,
 408   OTI_sync_new_ior,
 409   OTI_sync_new_and,
 410   OTI_sync_new_xor,
 411   OTI_sync_new_nand,
 412
 413   OTI_MAX
 414 };
 415
 416 #define ssadd_optab (&optab_table[OTI_ssadd])
 417 #define usadd_optab (&optab_table[OTI_usadd])
 418 #define sssub_optab (&optab_table[OTI_sssub])
 419 #define ussub_optab (&optab_table[OTI_ussub])
 420 #define ssmul_optab (&optab_table[OTI_ssmul])
 421 #define usmul_optab (&optab_table[OTI_usmul])
 422 #define ssdiv_optab (&optab_table[OTI_ssdiv])
 423 #define usdiv_optab (&optab_table[OTI_usdiv])
 424 #define ssneg_optab (&optab_table[OTI_ssneg])
 425 #define usneg_optab (&optab_table[OTI_usneg])
 426 #define ssashl_optab (&optab_table[OTI_ssashl])
 427 #define usashl_optab (&optab_table[OTI_usashl])
 428
 429 #define add_optab (&optab_table[OTI_add])
 430 #define sub_optab (&optab_table[OTI_sub])
 431 #define smul_optab (&optab_table[OTI_smul])
 432 #define addv_optab (&optab_table[OTI_addv])
 433 #define subv_optab (&optab_table[OTI_subv])
 434 #define smul_highpart_optab (&optab_table[OTI_smul_highpart])
 435 #define umul_highpart_optab (&optab_table[OTI_umul_highpart])
 436 #define smul_widen_optab (&optab_table[OTI_smul_widen])
 437 #define umul_widen_optab (&optab_table[OTI_umul_widen])
 438 #define usmul_widen_optab (&optab_table[OTI_usmul_widen])
 439 #define smadd_widen_optab (&optab_table[OTI_smadd_widen])
 440 #define umadd_widen_optab (&optab_table[OTI_umadd_widen])
 441 #define ssmadd_widen_optab (&optab_table[OTI_ssmadd_widen])
 442 #define usmadd_widen_optab (&optab_table[OTI_usmadd_widen])
 443 #define smsub_widen_optab (&optab_table[OTI_smsub_widen])
 444 #define umsub_widen_optab (&optab_table[OTI_umsub_widen])
 445 #define ssmsub_widen_optab (&optab_table[OTI_ssmsub_widen])
 446 #define usmsub_widen_optab (&optab_table[OTI_usmsub_widen])
 447 #define sdiv_optab (&optab_table[OTI_sdiv])
 448 #define smulv_optab (&optab_table[OTI_smulv])
 449 #define sdivv_optab (&optab_table[OTI_sdivv])
 450 #define sdivmod_optab (&optab_table[OTI_sdivmod])
 451 #define udiv_optab (&optab_table[OTI_udiv])
 452 #define udivmod_optab (&optab_table[OTI_udivmod])
 453 #define smod_optab (&optab_table[OTI_smod])
 454 #define umod_optab (&optab_table[OTI_umod])
 455 #define fmod_optab (&optab_table[OTI_fmod])
 456 #define remainder_optab (&optab_table[OTI_remainder])
 457 #define ftrunc_optab (&optab_table[OTI_ftrunc])
 458 #define and_optab (&optab_table[OTI_and])
 459 #define ior_optab (&optab_table[OTI_ior])
 460 #define xor_optab (&optab_table[OTI_xor])
 461 #define ashl_optab (&optab_table[OTI_ashl])
 462 #define lshr_optab (&optab_table[OTI_lshr])
 463 #define ashr_optab (&optab_table[OTI_ashr])
 464 #define rotl_optab (&optab_table[OTI_rotl])
 465 #define rotr_optab (&optab_table[OTI_rotr])
 466 #define vashl_optab (&optab_table[OTI_vashl])
 467 #define vlshr_optab (&optab_table[OTI_vlshr])
 468 #define vashr_optab (&optab_table[OTI_vashr])
 469 #define vrotl_optab (&optab_table[OTI_vrotl])
 470 #define vrotr_optab (&optab_table[OTI_vrotr])
 471 #define smin_optab (&optab_table[OTI_smin])
 472 #define smax_optab (&optab_table[OTI_smax])
 473 #define umin_optab (&optab_table[OTI_umin])
 474 #define umax_optab (&optab_table[OTI_umax])
 475 #define pow_optab (&optab_table[OTI_pow])
 476 #define atan2_optab (&optab_table[OTI_atan2])
 477 #define fma_optab (&optab_table[OTI_fma])
 478 #define fms_optab (&optab_table[OTI_fms])
 479 #define fnma_optab (&optab_table[OTI_fnma])
 480 #define fnms_optab (&optab_table[OTI_fnms])
 481
 482 #define mov_optab (&optab_table[OTI_mov])
 483 #define movstrict_optab (&optab_table[OTI_movstrict])
 484 #define movmisalign_optab (&optab_table[OTI_movmisalign])
 485 #define storent_optab (&optab_table[OTI_storent])
 486
 487 #define neg_optab (&optab_table[OTI_neg])
 488 #define negv_optab (&optab_table[OTI_negv])
 489 #define abs_optab (&optab_table[OTI_abs])
 490 #define absv_optab (&optab_table[OTI_absv])
 491 #define one_cmpl_optab (&optab_table[OTI_one_cmpl])
 492 #define bswap_optab (&optab_table[OTI_bswap])
 493 #define ffs_optab (&optab_table[OTI_ffs])
 494 #define clz_optab (&optab_table[OTI_clz])
 495 #define ctz_optab (&optab_table[OTI_ctz])
 496 #define clrsb_optab (&optab_table[OTI_clrsb])
 497 #define popcount_optab (&optab_table[OTI_popcount])
 498 #define parity_optab (&optab_table[OTI_parity])
 499 #define sqrt_optab (&optab_table[OTI_sqrt])
 500 #define sincos_optab (&optab_table[OTI_sincos])
 501 #define sin_optab (&optab_table[OTI_sin])
 502 #define asin_optab (&optab_table[OTI_asin])
 503 #define cos_optab (&optab_table[OTI_cos])
 504 #define acos_optab (&optab_table[OTI_acos])
 505 #define exp_optab (&optab_table[OTI_exp])
 506 #define exp10_optab (&optab_table[OTI_exp10])
 507 #define exp2_optab (&optab_table[OTI_exp2])
 508 #define expm1_optab (&optab_table[OTI_expm1])
 509 #define ldexp_optab (&optab_table[OTI_ldexp])
 510 #define scalb_optab (&optab_table[OTI_scalb])
 511 #define significand_optab (&optab_table[OTI_significand])
 512 #define logb_optab (&optab_table[OTI_logb])
 513 #define ilogb_optab (&optab_table[OTI_ilogb])
 514 #define log_optab (&optab_table[OTI_log])
 515 #define log10_optab (&optab_table[OTI_log10])
 516 #define log2_optab (&optab_table[OTI_log2])
 517 #define log1p_optab (&optab_table[OTI_log1p])
 518 #define floor_optab (&optab_table[OTI_floor])
 519 #define ceil_optab (&optab_table[OTI_ceil])
 520 #define btrunc_optab (&optab_table[OTI_btrunc])
 521 #define round_optab (&optab_table[OTI_round])
 522 #define nearbyint_optab (&optab_table[OTI_nearbyint])
 523 #define rint_optab (&optab_table[OTI_rint])
 524 #define tan_optab (&optab_table[OTI_tan])
 525 #define atan_optab (&optab_table[OTI_atan])
 526 #define copysign_optab (&optab_table[OTI_copysign])
 527 #define signbit_optab (&optab_table[OTI_signbit])
 528 #define isinf_optab (&optab_table[OTI_isinf])
 529
 530 #define cmp_optab (&optab_table[OTI_cmp])
 531 #define ucmp_optab (&optab_table[OTI_ucmp])
 532
 533 #define eq_optab (&optab_table[OTI_eq])
 534 #define ne_optab (&optab_table[OTI_ne])
 535 #define gt_optab (&optab_table[OTI_gt])
 536 #define ge_optab (&optab_table[OTI_ge])
 537 #define lt_optab (&optab_table[OTI_lt])
 538 #define le_optab (&optab_table[OTI_le])
 539 #define unord_optab (&optab_table[OTI_unord])
 540
 541 #define strlen_optab (&optab_table[OTI_strlen])
 542
 543 #define cbranch_optab (&optab_table[OTI_cbranch])
 544 #define cmov_optab (&optab_table[OTI_cmov])
 545 #define cstore_optab (&optab_table[OTI_cstore])
 546 #define ctrap_optab (&optab_table[OTI_ctrap])
 547
 548 #define push_optab (&optab_table[OTI_push])
 549 #define addcc_optab (&optab_table[OTI_addcc])
 550
 551 #define reduc_smax_optab (&optab_table[OTI_reduc_smax])
 552 #define reduc_umax_optab (&optab_table[OTI_reduc_umax])
 553 #define reduc_smin_optab (&optab_table[OTI_reduc_smin])
 554 #define reduc_umin_optab (&optab_table[OTI_reduc_umin])
 555 #define reduc_splus_optab (&optab_table[OTI_reduc_splus])
 556 #define reduc_uplus_optab (&optab_table[OTI_reduc_uplus])
 557
 558 #define ssum_widen_optab (&optab_table[OTI_ssum_widen])
 559 #define usum_widen_optab (&optab_table[OTI_usum_widen])
 560 #define sdot_prod_optab (&optab_table[OTI_sdot_prod])
 561 #define udot_prod_optab (&optab_table[OTI_udot_prod])
 562
 563 #define vec_set_optab (&optab_table[OTI_vec_set])
 564 #define vec_extract_optab (&optab_table[OTI_vec_extract])
 565 #define vec_extract_even_optab (&optab_table[OTI_vec_extract_even])
 566 #define vec_extract_odd_optab (&optab_table[OTI_vec_extract_odd])
 567 #define vec_interleave_high_optab (&optab_table[OTI_vec_interleave_high])
 568 #define vec_interleave_low_optab (&optab_table[OTI_vec_interleave_low])
 569 #define vec_init_optab (&optab_table[OTI_vec_init])
 570 #define vec_shl_optab (&optab_table[OTI_vec_shl])
 571 #define vec_shr_optab (&optab_table[OTI_vec_shr])
 572 #define vec_realign_load_optab (&optab_table[OTI_vec_realign_load])
 573 #define vec_widen_umult_hi_optab (&optab_table[OTI_vec_widen_umult_hi])
 574 #define vec_widen_umult_lo_optab (&optab_table[OTI_vec_widen_umult_lo])
 575 #define vec_widen_smult_hi_optab (&optab_table[OTI_vec_widen_smult_hi])
 576 #define vec_widen_smult_lo_optab (&optab_table[OTI_vec_widen_smult_lo])
 577 #define vec_widen_ushiftl_hi_optab (&optab_table[OTI_vec_widen_ushiftl_hi])
 578 #define vec_widen_ushiftl_lo_optab (&optab_table[OTI_vec_widen_ushiftl_lo])
 579 #define vec_widen_sshiftl_hi_optab (&optab_table[OTI_vec_widen_sshiftl_hi])
 580 #define vec_widen_sshiftl_lo_optab (&optab_table[OTI_vec_widen_sshiftl_lo])
 581 #define vec_unpacks_hi_optab (&optab_table[OTI_vec_unpacks_hi])
 582 #define vec_unpacks_lo_optab (&optab_table[OTI_vec_unpacks_lo])
 583 #define vec_unpacku_hi_optab (&optab_table[OTI_vec_unpacku_hi])
 584 #define vec_unpacku_lo_optab (&optab_table[OTI_vec_unpacku_lo])
 585 #define vec_unpacks_float_hi_optab (&optab_table[OTI_vec_unpacks_float_hi])
 586 #define vec_unpacks_float_lo_optab (&optab_table[OTI_vec_unpacks_float_lo])
 587 #define vec_unpacku_float_hi_optab (&optab_table[OTI_vec_unpacku_float_hi])
 588 #define vec_unpacku_float_lo_optab (&optab_table[OTI_vec_unpacku_float_lo])
 589 #define vec_pack_trunc_optab (&optab_table[OTI_vec_pack_trunc])
 590 #define vec_pack_ssat_optab (&optab_table[OTI_vec_pack_ssat])
 591 #define vec_pack_usat_optab (&optab_table[OTI_vec_pack_usat])
 592 #define vec_pack_sfix_trunc_optab (&optab_table[OTI_vec_pack_sfix_trunc])
 593 #define vec_pack_ufix_trunc_optab (&optab_table[OTI_vec_pack_ufix_trunc])
 594
 595 #define powi_optab (&optab_table[OTI_powi])
 596
 597 #define sync_compare_and_swap_optab \
 598   (&optab_table[(int) OTI_sync_compare_and_swap])
 599 #define sync_lock_test_and_set_optab \
 600   (&optab_table[(int) OTI_sync_lock_test_and_set])
 601 #define sync_old_add_optab (&optab_table[(int) OTI_sync_old_add])
 602 #define sync_old_sub_optab (&optab_table[(int) OTI_sync_old_sub])
 603 #define sync_old_ior_optab (&optab_table[(int) OTI_sync_old_ior])
 604 #define sync_old_and_optab (&optab_table[(int) OTI_sync_old_and])
 605 #define sync_old_xor_optab (&optab_table[(int) OTI_sync_old_xor])
 606 #define sync_old_nand_optab (&optab_table[(int) OTI_sync_old_nand])
 607 #define sync_new_add_optab (&optab_table[(int) OTI_sync_new_add])
 608 #define sync_new_sub_optab (&optab_table[(int) OTI_sync_new_sub])
 609 #define sync_new_ior_optab (&optab_table[(int) OTI_sync_new_ior])
 610 #define sync_new_and_optab (&optab_table[(int) OTI_sync_new_and])
 611 #define sync_new_xor_optab (&optab_table[(int) OTI_sync_new_xor])
 612 #define sync_new_nand_optab (&optab_table[(int) OTI_sync_new_nand])
 613
 614 /* Conversion optabs have their own table and indexes.  */
 615 enum convert_optab_index
 616 {
 617   COI_sext,
 618   COI_zext,
 619   COI_trunc,
 620
 621   COI_sfix,
 622   COI_ufix,
 623
 624   COI_sfixtrunc,
 625   COI_ufixtrunc,
 626
 627   COI_sfloat,
 628   COI_ufloat,
 629
 630   COI_lrint,
 631   COI_lround,
 632   COI_lfloor,
 633   COI_lceil,
 634
 635   COI_fract,
 636   COI_fractuns,
 637   COI_satfract,
 638   COI_satfractuns,
 639
 640   COI_vec_load_lanes,
 641   COI_vec_store_lanes,
 642
 643   /* Vector conditional operations.  */
 644   COI_vcond,
 645   COI_vcondu,
 646
 647   COI_MAX
 648 };
 649
 650 #define sext_optab (&convert_optab_table[COI_sext])
 651 #define zext_optab (&convert_optab_table[COI_zext])
 652 #define trunc_optab (&convert_optab_table[COI_trunc])
 653 #define sfix_optab (&convert_optab_table[COI_sfix])
 654 #define ufix_optab (&convert_optab_table[COI_ufix])
 655 #define sfixtrunc_optab (&convert_optab_table[COI_sfixtrunc])
 656 #define ufixtrunc_optab (&convert_optab_table[COI_ufixtrunc])
 657 #define sfloat_optab (&convert_optab_table[COI_sfloat])
 658 #define ufloat_optab (&convert_optab_table[COI_ufloat])
 659 #define lrint_optab (&convert_optab_table[COI_lrint])
 660 #define lround_optab (&convert_optab_table[COI_lround])
 661 #define lfloor_optab (&convert_optab_table[COI_lfloor])
 662 #define lceil_optab (&convert_optab_table[COI_lceil])
 663 #define fract_optab (&convert_optab_table[COI_fract])
 664 #define fractuns_optab (&convert_optab_table[COI_fractuns])
 665 #define satfract_optab (&convert_optab_table[COI_satfract])
 666 #define satfractuns_optab (&convert_optab_table[COI_satfractuns])
 667 #define vec_load_lanes_optab (&convert_optab_table[COI_vec_load_lanes])
 668 #define vec_store_lanes_optab (&convert_optab_table[COI_vec_store_lanes])
 669 #define vcond_optab (&convert_optab_table[(int) COI_vcond])
 670 #define vcondu_optab (&convert_optab_table[(int) COI_vcondu])
 671
 672 /* Contains the optab used for each rtx code.  */
 673 extern optab code_to_optab[NUM_RTX_CODE + 1];
 674
 675 \f
 676 typedef rtx (*rtxfun) (rtx);
 677
 678 /* Enumerates operations that have a named .md pattern associated
 679    with them, but which are not implemented as library functions.  */
 680 enum direct_optab_index
 681 {
 682 #ifdef HAVE_conditional_move
 683   /* Conditional move operations.  */
 684   DOI_movcc,
 685 #endif
 686
 687   /* Operations that use a scratch register to perform input and output
 688      reloads of special objects.  */
 689   DOI_reload_in,
 690   DOI_reload_out,
 691
 692   /* Block move operation.  */
 693   DOI_movmem,
 694
 695   /* Block set operation.  */
 696   DOI_setmem,
 697
 698   /* Various types of block compare operation.  */
 699   DOI_cmpstr,
 700   DOI_cmpstrn,
 701   DOI_cmpmem,
 702
 703   /* Atomic clear with release semantics.  */
 704   DOI_sync_lock_release,
 705
 706   /* Atomic operation with no resulting value.  */
 707   DOI_sync_add,
 708   DOI_sync_sub,
 709   DOI_sync_ior,
 710   DOI_sync_and,
 711   DOI_sync_xor,
 712   DOI_sync_nand,
 713
 714   /* Atomic operations with memory model parameters. */
 715   DOI_atomic_exchange,
 716   DOI_atomic_compare_and_swap,
 717   DOI_atomic_load,
 718   DOI_atomic_store,
 719   DOI_atomic_add_fetch,
 720   DOI_atomic_sub_fetch,
 721   DOI_atomic_and_fetch,
 722   DOI_atomic_nand_fetch,
 723   DOI_atomic_xor_fetch,
 724   DOI_atomic_or_fetch,
 725   DOI_atomic_fetch_add,
 726   DOI_atomic_fetch_sub,
 727   DOI_atomic_fetch_and,
 728   DOI_atomic_fetch_nand,
 729   DOI_atomic_fetch_xor,
 730   DOI_atomic_fetch_or,
 731   DOI_atomic_add,
 732   DOI_atomic_sub,
 733   DOI_atomic_and,
 734   DOI_atomic_nand,
 735   DOI_atomic_xor,
 736   DOI_atomic_or,
 737   DOI_atomic_always_lock_free,
 738   DOI_atomic_is_lock_free,
 739   DOI_atomic_thread_fence,
 740   DOI_atomic_signal_fence,
 741
 742   /* Vector permutation.  */
 743   DOI_vec_perm,
 744   DOI_vec_perm_const,
 745
 746   DOI_MAX
 747 };
 748
 749 /* A structure that says which insn should be used to perform an operation
 750    in a particular mode.  */
 751 struct direct_optab_d
 752 {
 753   struct optab_handlers handlers[NUM_MACHINE_MODES];
 754 };
 755 typedef struct direct_optab_d *direct_optab;
 756
 757 #ifdef HAVE_conditional_move
 758 #define movcc_optab (&direct_optab_table[(int) DOI_movcc])
 759 #endif
 760 #define reload_in_optab (&direct_optab_table[(int) DOI_reload_in])
 761 #define reload_out_optab (&direct_optab_table[(int) DOI_reload_out])
 762 #define movmem_optab (&direct_optab_table[(int) DOI_movmem])
 763 #define setmem_optab (&direct_optab_table[(int) DOI_setmem])
 764 #define cmpstr_optab (&direct_optab_table[(int) DOI_cmpstr])
 765 #define cmpstrn_optab (&direct_optab_table[(int) DOI_cmpstrn])
 766 #define cmpmem_optab (&direct_optab_table[(int) DOI_cmpmem])
 767 #define sync_lock_release_optab \
 768   (&direct_optab_table[(int) DOI_sync_lock_release])
 769 #define sync_add_optab (&direct_optab_table[(int) DOI_sync_add])
 770 #define sync_sub_optab (&direct_optab_table[(int) DOI_sync_sub])
 771 #define sync_ior_optab (&direct_optab_table[(int) DOI_sync_ior])
 772 #define sync_and_optab (&direct_optab_table[(int) DOI_sync_and])
 773 #define sync_xor_optab (&direct_optab_table[(int) DOI_sync_xor])
 774 #define sync_nand_optab (&direct_optab_table[(int) DOI_sync_nand])
 775
 776 #define atomic_exchange_optab \
 777   (&direct_optab_table[(int) DOI_atomic_exchange])
 778 #define atomic_compare_and_swap_optab \
 779   (&direct_optab_table[(int) DOI_atomic_compare_and_swap])
 780 #define atomic_load_optab \
 781   (&direct_optab_table[(int) DOI_atomic_load])
 782 #define atomic_store_optab \
 783   (&direct_optab_table[(int) DOI_atomic_store])
 784 #define atomic_add_fetch_optab \
 785   (&direct_optab_table[(int) DOI_atomic_add_fetch])
 786 #define atomic_sub_fetch_optab \
 787   (&direct_optab_table[(int) DOI_atomic_sub_fetch])
 788 #define atomic_and_fetch_optab \
 789   (&direct_optab_table[(int) DOI_atomic_and_fetch])
 790 #define atomic_nand_fetch_optab \
 791   (&direct_optab_table[(int) DOI_atomic_nand_fetch])
 792 #define atomic_xor_fetch_optab \
 793   (&direct_optab_table[(int) DOI_atomic_xor_fetch])
 794 #define atomic_or_fetch_optab \
 795   (&direct_optab_table[(int) DOI_atomic_or_fetch])
 796 #define atomic_fetch_add_optab \
 797   (&direct_optab_table[(int) DOI_atomic_fetch_add])
 798 #define atomic_fetch_sub_optab \
 799   (&direct_optab_table[(int) DOI_atomic_fetch_sub])
 800 #define atomic_fetch_and_optab \
 801   (&direct_optab_table[(int) DOI_atomic_fetch_and])
 802 #define atomic_fetch_nand_optab \
 803   (&direct_optab_table[(int) DOI_atomic_fetch_nand])
 804 #define atomic_fetch_xor_optab \
 805   (&direct_optab_table[(int) DOI_atomic_fetch_xor])
 806 #define atomic_fetch_or_optab \
 807   (&direct_optab_table[(int) DOI_atomic_fetch_or])
 808 #define atomic_add_optab \
 809   (&direct_optab_table[(int) DOI_atomic_add])
 810 #define atomic_sub_optab \
 811   (&direct_optab_table[(int) DOI_atomic_sub])
 812 #define atomic_and_optab \
 813   (&direct_optab_table[(int) DOI_atomic_and])
 814 #define atomic_nand_optab \
 815   (&direct_optab_table[(int) DOI_atomic_nand])
 816 #define atomic_xor_optab \
 817   (&direct_optab_table[(int) DOI_atomic_xor])
 818 #define atomic_or_optab \
 819   (&direct_optab_table[(int) DOI_atomic_or])
 820 #define atomic_always_lock_free_optab \
 821   (&direct_optab_table[(int) DOI_atomic_always_lock_free])
 822 #define atomic_is_lock_free_optab \
 823   (&direct_optab_table[(int) DOI_atomic_is_lock_free])
 824 #define atomic_thread_fence_optab \
 825   (&direct_optab_table[(int) DOI_atomic_thread_fence])
 826 #define atomic_signal_fence_optab \
 827   (&direct_optab_table[(int) DOI_atomic_signal_fence])
 828
 829 #define vec_perm_optab (&direct_optab_table[DOI_vec_perm])
 830 #define vec_perm_const_optab (&direct_optab_table[(int) DOI_vec_perm_const])
 831 \f
 832 /* Target-dependent globals.  */
 833 struct target_optabs {
 834   /* Tables of patterns that may have an associated libcall.  */
 835   struct optab_d x_optab_table[(int) OTI_MAX];
 836
 837   /* Tables of patterns for converting one mode to another.  */
 838   struct convert_optab_d x_convert_optab_table[(int) COI_MAX];
 839
 840   /* Tables of patterns for direct optabs (i.e. those which cannot be
 841      implemented using a libcall).  */
 842   struct direct_optab_d x_direct_optab_table[(int) DOI_MAX];
 843 };
 844
 845 extern struct target_optabs default_target_optabs;
 846 #if SWITCHABLE_TARGET
 847 extern struct target_optabs *this_target_optabs;
 848 #else
 849 #define this_target_optabs (&default_target_optabs)
 850 #endif
 851
 852 #define optab_table \
 853   (this_target_optabs->x_optab_table)
 854 #define convert_optab_table \
 855   (this_target_optabs->x_convert_optab_table)
 856 #define direct_optab_table \
 857   (this_target_optabs->x_direct_optab_table)
 858 \f
 859 /* Define functions given in optabs.c.  */
 860
 861 extern rtx expand_widen_pattern_expr (sepops ops, rtx op0, rtx op1, rtx wide_op,
 862                                       rtx target, int unsignedp);
 863
 864 extern rtx expand_ternary_op (enum machine_mode mode, optab ternary_optab,
 865                               rtx op0, rtx op1, rtx op2, rtx target,
 866                               int unsignedp);
 867
 868 /* Expand a binary operation given optab and rtx operands.  */
 869 extern rtx expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
 870                          enum optab_methods);
 871
 872 extern bool force_expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
 873                                 enum optab_methods);
 874
 875 /* Expand a binary operation with both signed and unsigned forms.  */
 876 extern rtx sign_expand_binop (enum machine_mode, optab, optab, rtx, rtx,
 877                               rtx, int, enum optab_methods);
 878
 879 /* Generate code to perform an operation on one operand with two results.  */
 880 extern int expand_twoval_unop (optab, rtx, rtx, rtx, int);
 881
 882 /* Generate code to perform an operation on two operands with two results.  */
 883 extern int expand_twoval_binop (optab, rtx, rtx, rtx, rtx, int);
 884
 885 /* Generate code to perform an operation on two operands with two
 886    results, using a library function.  */
 887 extern bool expand_twoval_binop_libfunc (optab, rtx, rtx, rtx, rtx,
 888                                          enum rtx_code);
 889
 890 /* Expand a unary arithmetic operation given optab rtx operand.  */
 891 extern rtx expand_unop (enum machine_mode, optab, rtx, rtx, int);
 892
 893 /* Expand the absolute value operation.  */
 894 extern rtx expand_abs_nojump (enum machine_mode, rtx, rtx, int);
 895 extern rtx expand_abs (enum machine_mode, rtx, rtx, int, int);
 896
 897 /* Expand the one's complement absolute value operation.  */
 898 extern rtx expand_one_cmpl_abs_nojump (enum machine_mode, rtx, rtx);
 899
 900 /* Expand the copysign operation.  */
 901 extern rtx expand_copysign (rtx, rtx, rtx);
 902
 903 /* Generate an instruction with a given INSN_CODE with an output and
 904    an input.  */
 905 extern void emit_unop_insn (enum insn_code, rtx, rtx, enum rtx_code);
 906 extern bool maybe_emit_unop_insn (enum insn_code, rtx, rtx, enum rtx_code);
 907
 908 /* Find a widening optab even if it doesn't widen as much as we want.  */
 909 #define find_widening_optab_handler(A,B,C,D) \
 910   find_widening_optab_handler_and_mode (A, B, C, D, NULL)
 911 extern enum insn_code find_widening_optab_handler_and_mode (optab,
 912                                                             enum machine_mode,
 913                                                             enum machine_mode,
 914                                                             int,
 915                                                             enum machine_mode *);
 916
 917 /* An extra flag to control optab_for_tree_code's behavior.  This is needed to
 918    distinguish between machines with a vector shift that takes a scalar for the
 919    shift amount vs. machines that take a vector for the shift amount.  */
 920 enum optab_subtype
 921 {
 922   optab_default,
 923   optab_scalar,
 924   optab_vector
 925 };
 926
 927 /* Return the optab used for computing the given operation on the type given by
 928    the second argument.  The third argument distinguishes between the types of
 929    vector shifts and rotates */
 930 extern optab optab_for_tree_code (enum tree_code, const_tree, enum optab_subtype);
 931
 932 /* The various uses that a comparison can have; used by can_compare_p:
 933    jumps, conditional moves, store flag operations.  */
 934 enum can_compare_purpose
 935 {
 936   ccp_jump,
 937   ccp_cmov,
 938   ccp_store_flag
 939 };
 940
 941 /* Nonzero if a compare of mode MODE can be done straightforwardly
 942    (without splitting it into pieces).  */
 943 extern int can_compare_p (enum rtx_code, enum machine_mode,
 944                           enum can_compare_purpose);
 945
 946 /* Return the INSN_CODE to use for an extend operation.  */
 947 extern enum insn_code can_extend_p (enum machine_mode, enum machine_mode, int);
 948
 949 /* Generate the body of an insn to extend Y (with mode MFROM)
 950    into X (with mode MTO).  Do zero-extension if UNSIGNEDP is nonzero.  */
 951 extern rtx gen_extend_insn (rtx, rtx, enum machine_mode,
 952                             enum machine_mode, int);
 953
 954 /* Call this to reset the function entry for one optab.  */
 955 extern void set_optab_libfunc (optab, enum machine_mode, const char *);
 956 extern void set_conv_libfunc (convert_optab, enum machine_mode,
 957                               enum machine_mode, const char *);
 958
 959 /* Call this to install all of the __sync libcalls up to size MAX.  */
 960 extern void init_sync_libfuncs (int max);
 961
 962 /* Generate code for a FIXED_CONVERT_EXPR.  */
 963 extern void expand_fixed_convert (rtx, rtx, int, int);
 964
 965 /* Generate code for a FLOAT_EXPR.  */
 966 extern void expand_float (rtx, rtx, int);
 967
 968 /* Return the insn_code for a FLOAT_EXPR.  */
 969 enum insn_code can_float_p (enum machine_mode, enum machine_mode, int);
 970
 971 /* Return true if there is an inline compare and swap pattern.  */
 972 extern bool can_compare_and_swap_p (enum machine_mode, bool);
 973
 974 /* Return true if there is an inline atomic exchange pattern.  */
 975 extern bool can_atomic_exchange_p (enum machine_mode, bool);
 976
 977 /* Generate code for a compare and swap.  */
 978 extern bool expand_atomic_compare_and_swap (rtx *, rtx *, rtx, rtx, rtx, bool,
 979                                             enum memmodel, enum memmodel);
 980
 981 /* Generate memory barriers.  */
 982 extern void expand_mem_thread_fence (enum memmodel);
 983 extern void expand_mem_signal_fence (enum memmodel);
 984
 985 /* Check whether an operation represented by the code CODE is a
 986    convert operation that is supported by the target platform in
 987    vector form */
 988 bool supportable_convert_operation (enum tree_code, tree, tree, tree *,
 989                                     enum tree_code *);
 990
 991 /* Generate code for a FIX_EXPR.  */
 992 extern void expand_fix (rtx, rtx, int);
 993
 994 /* Generate code for float to integral conversion.  */
 995 extern bool expand_sfix_optab (rtx, rtx, convert_optab);
 996
 997 /* Generate code for a widening multiply.  */
 998 extern rtx expand_widening_mult (enum machine_mode, rtx, rtx, rtx, int, optab);
 999
1000 /* Return tree if target supports vector operations for COND_EXPR.  */
1001 bool expand_vec_cond_expr_p (tree, tree);
1002
1003 /* Generate code for VEC_COND_EXPR.  */
1004 extern rtx expand_vec_cond_expr (tree, tree, tree, tree, rtx);
1005 /* Generate code for VEC_LSHIFT_EXPR and VEC_RSHIFT_EXPR.  */
1006 extern rtx expand_vec_shift_expr (sepops, rtx);
1007
1008 /* Return tree if target supports vector operations for VEC_PERM_EXPR.  */
1009 extern bool can_vec_perm_p (enum machine_mode, bool, const unsigned char *);
1010
1011 /* Return true if target supports vector operations using VEC_PERM_EXPR.  */
1012 extern bool can_vec_perm_for_code_p (enum tree_code, enum machine_mode, rtx *);
1013
1014 /* Generate code for VEC_PERM_EXPR.  */
1015 extern rtx expand_vec_perm (enum machine_mode, rtx, rtx, rtx, rtx);
1016
1017 /* Return the insn used to implement mode MODE of OP, or CODE_FOR_nothing
1018    if the target does not have such an insn.  */
1019
1020 static inline enum insn_code
1021 optab_handler (optab op, enum machine_mode mode)
1022 {
1023   return (enum insn_code) (op->handlers[(int) mode].insn_code
1024                            + (int) CODE_FOR_nothing);
1025 }
1026
1027 /* Like optab_handler, but for widening_operations that have a TO_MODE and
1028   a FROM_MODE.  */
1029
1030 static inline enum insn_code
1031 widening_optab_handler (optab op, enum machine_mode to_mode,
1032                         enum machine_mode from_mode)
1033 {
1034   if (to_mode == from_mode || from_mode == VOIDmode)
1035     return optab_handler (op, to_mode);
1036
1037   if (op->widening)
1038     return (enum insn_code) (op->widening->handlers[(int) to_mode][(int) from_mode].insn_code
1039                              + (int) CODE_FOR_nothing);
1040
1041   return CODE_FOR_nothing;
1042 }
1043
1044 /* Record that insn CODE should be used to implement mode MODE of OP.  */
1045
1046 static inline void
1047 set_optab_handler (optab op, enum machine_mode mode, enum insn_code code)
1048 {
1049   op->handlers[(int) mode].insn_code = (int) code - (int) CODE_FOR_nothing;
1050 }
1051
1052 /* Like set_optab_handler, but for widening operations that have a TO_MODE
1053    and a FROM_MODE.  */
1054
1055 static inline void
1056 set_widening_optab_handler (optab op, enum machine_mode to_mode,
1057                             enum machine_mode from_mode, enum insn_code code)
1058 {
1059   if (to_mode == from_mode)
1060     set_optab_handler (op, to_mode, code);
1061   else
1062     {
1063       if (op->widening == NULL)
1064         op->widening = (struct widening_optab_handlers *)
1065               xcalloc (1, sizeof (struct widening_optab_handlers));
1066
1067       op->widening->handlers[(int) to_mode][(int) from_mode].insn_code
1068           = (int) code - (int) CODE_FOR_nothing;
1069     }
1070 }
1071
1072 /* Return the insn used to perform conversion OP from mode FROM_MODE
1073    to mode TO_MODE; return CODE_FOR_nothing if the target does not have
1074    such an insn.  */
1075
1076 static inline enum insn_code
1077 convert_optab_handler (convert_optab op, enum machine_mode to_mode,
1078                        enum machine_mode from_mode)
1079 {
1080   return ((enum insn_code)
1081           (op->handlers[(int) to_mode][(int) from_mode].insn_code
1082            + (int) CODE_FOR_nothing));
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
1093     = (int) code - (int) CODE_FOR_nothing;
1094 }
1095
1096 /* Return the insn used to implement mode MODE of OP, or CODE_FOR_nothing
1097    if the target does not have such an insn.  */
1098
1099 static inline enum insn_code
1100 direct_optab_handler (direct_optab op, enum machine_mode mode)
1101 {
1102   return (enum insn_code) (op->handlers[(int) mode].insn_code
1103                            + (int) CODE_FOR_nothing);
1104 }
1105
1106 /* Record that insn CODE should be used to implement mode MODE of OP.  */
1107
1108 static inline void
1109 set_direct_optab_handler (direct_optab op, enum machine_mode mode,
1110                           enum insn_code code)
1111 {
1112   op->handlers[(int) mode].insn_code = (int) code - (int) CODE_FOR_nothing;
1113 }
1114
1115 extern rtx optab_libfunc (optab optab, enum machine_mode mode);
1116 extern rtx convert_optab_libfunc (convert_optab optab, enum machine_mode mode1,
1117                                   enum machine_mode mode2);
1118
1119 extern bool insn_operand_matches (enum insn_code icode, unsigned int opno,
1120                                   rtx operand);
1121
1122 /* Describes the type of an expand_operand.  Each value is associated
1123    with a create_*_operand function; see the comments above those
1124    functions for details.  */
1125 enum expand_operand_type {
1126   EXPAND_FIXED,
1127   EXPAND_OUTPUT,
1128   EXPAND_INPUT,
1129   EXPAND_CONVERT_TO,
1130   EXPAND_CONVERT_FROM,
1131   EXPAND_ADDRESS,
1132   EXPAND_INTEGER
1133 };
1134
1135 /* Information about an operand for instruction expansion.  */
1136 struct expand_operand {
1137   /* The type of operand.  */
1138   ENUM_BITFIELD (expand_operand_type) type : 8;
1139
1140   /* True if any conversion should treat VALUE as being unsigned
1141      rather than signed.  Only meaningful for certain types.  */
1142   unsigned int unsigned_p : 1;
1143
1144   /* Unused; available for future use.  */
1145   unsigned int unused : 7;
1146
1147   /* The mode passed to the convert_*_operand function.  It has a
1148      type-dependent meaning.  */
1149   ENUM_BITFIELD (machine_mode) mode : 16;
1150
1151   /* The value of the operand.  */
1152   rtx value;
1153 };
1154
1155 /* Initialize OP with the given fields.  Initialise the other fields
1156    to their default values.  */
1157
1158 static inline void
1159 create_expand_operand (struct expand_operand *op,
1160                        enum expand_operand_type type,
1161                        rtx value, enum machine_mode mode,
1162                        bool unsigned_p)
1163 {
1164   op->type = type;
1165   op->unsigned_p = unsigned_p;
1166   op->unused = 0;
1167   op->mode = mode;
1168   op->value = value;
1169 }
1170
1171 /* Make OP describe an operand that must use rtx X, even if X is volatile.  */
1172
1173 static inline void
1174 create_fixed_operand (struct expand_operand *op, rtx x)
1175 {
1176   create_expand_operand (op, EXPAND_FIXED, x, VOIDmode, false);
1177 }
1178
1179 /* Make OP describe an output operand that must have mode MODE.
1180    X, if nonnull, is a suggestion for where the output should be stored.
1181    It is OK for VALUE to be inconsistent with MODE, although it will just
1182    be ignored in that case.  */
1183
1184 static inline void
1185 create_output_operand (struct expand_operand *op, rtx x,
1186                        enum machine_mode mode)
1187 {
1188   create_expand_operand (op, EXPAND_OUTPUT, x, mode, false);
1189 }
1190
1191 /* Make OP describe an input operand that must have mode MODE and
1192    value VALUE; MODE cannot be VOIDmode.  The backend may request that
1193    VALUE be copied into a different kind of rtx before being passed
1194    as an operand.  */
1195
1196 static inline void
1197 create_input_operand (struct expand_operand *op, rtx value,
1198                       enum machine_mode mode)
1199 {
1200   create_expand_operand (op, EXPAND_INPUT, value, mode, false);
1201 }
1202
1203 /* Like create_input_operand, except that VALUE must first be converted
1204    to mode MODE.  UNSIGNED_P says whether VALUE is unsigned.  */
1205
1206 static inline void
1207 create_convert_operand_to (struct expand_operand *op, rtx value,
1208                            enum machine_mode mode, bool unsigned_p)
1209 {
1210   create_expand_operand (op, EXPAND_CONVERT_TO, value, mode, unsigned_p);
1211 }
1212
1213 /* Make OP describe an input operand that should have the same value
1214    as VALUE, after any mode conversion that the backend might request.
1215    If VALUE is a CONST_INT, it should be treated as having mode MODE.
1216    UNSIGNED_P says whether VALUE is unsigned.  */
1217
1218 static inline void
1219 create_convert_operand_from (struct expand_operand *op, rtx value,
1220                              enum machine_mode mode, bool unsigned_p)
1221 {
1222   create_expand_operand (op, EXPAND_CONVERT_FROM, value, mode, unsigned_p);
1223 }
1224
1225 extern void create_convert_operand_from_type (struct expand_operand *op,
1226                                               rtx value, tree type);
1227
1228 /* Make OP describe an input Pmode address operand.  VALUE is the value
1229    of the address, but it may need to be converted to Pmode first.  */
1230
1231 static inline void
1232 create_address_operand (struct expand_operand *op, rtx value)
1233 {
1234   create_expand_operand (op, EXPAND_ADDRESS, value, Pmode, false);
1235 }
1236
1237 /* Make OP describe an input operand that has value INTVAL and that has
1238    no inherent mode.  This function should only be used for operands that
1239    are always expand-time constants.  The backend may request that INTVAL
1240    be copied into a different kind of rtx, but it must specify the mode
1241    of that rtx if so.  */
1242
1243 static inline void
1244 create_integer_operand (struct expand_operand *op, HOST_WIDE_INT intval)
1245 {
1246   create_expand_operand (op, EXPAND_INTEGER, GEN_INT (intval), VOIDmode, false);
1247 }
1248
1249 extern bool valid_multiword_target_p (rtx);
1250
1251 extern bool maybe_legitimize_operands (enum insn_code icode,
1252                                        unsigned int opno, unsigned int nops,
1253                                        struct expand_operand *ops);
1254 extern rtx maybe_gen_insn (enum insn_code icode, unsigned int nops,
1255                            struct expand_operand *ops);
1256 extern bool maybe_expand_insn (enum insn_code icode, unsigned int nops,
1257                                struct expand_operand *ops);
1258 extern bool maybe_expand_jump_insn (enum insn_code icode, unsigned int nops,
1259                                     struct expand_operand *ops);
1260 extern void expand_insn (enum insn_code icode, unsigned int nops,
1261                          struct expand_operand *ops);
1262 extern void expand_jump_insn (enum insn_code icode, unsigned int nops,
1263                               struct expand_operand *ops);
1264
1265 extern rtx prepare_operand (enum insn_code, rtx, int, enum machine_mode,
1266                             enum machine_mode, int);
1267
1268 #endif /* GCC_OPTABS_H */