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   /* Initialize vector operand.  */
 339   OTI_vec_init,
 340   /* Whole vector shift. The shift amount is in bits.  */
 341   OTI_vec_shl,
 342   OTI_vec_shr,
 343   /* Extract specified elements from vectors, for vector load.  */
 344   OTI_vec_realign_load,
 345   /* Widening multiplication.
 346      The high/low part of the resulting vector of products is returned.  */
 347   OTI_vec_widen_umult_hi,
 348   OTI_vec_widen_umult_lo,
 349   OTI_vec_widen_smult_hi,
 350   OTI_vec_widen_smult_lo,
 351   /* Widening shift left.
 352      The high/low part of the resulting vector is returned.  */
 353   OTI_vec_widen_ushiftl_hi,
 354   OTI_vec_widen_ushiftl_lo,
 355   OTI_vec_widen_sshiftl_hi,
 356   OTI_vec_widen_sshiftl_lo,
 357   /* Extract and widen the high/low part of a vector of signed or
 358      floating point elements.  */
 359   OTI_vec_unpacks_hi,
 360   OTI_vec_unpacks_lo,
 361   /* Extract and widen the high/low part of a vector of unsigned
 362      elements.  */
 363   OTI_vec_unpacku_hi,
 364   OTI_vec_unpacku_lo,
 365
 366   /* Extract, convert to floating point and widen the high/low part of
 367      a vector of signed or unsigned integer elements.  */
 368   OTI_vec_unpacks_float_hi,
 369   OTI_vec_unpacks_float_lo,
 370   OTI_vec_unpacku_float_hi,
 371   OTI_vec_unpacku_float_lo,
 372
 373   /* Narrow (demote) and merge the elements of two vectors.  */
 374   OTI_vec_pack_trunc,
 375   OTI_vec_pack_usat,
 376   OTI_vec_pack_ssat,
 377
 378   /* Convert to signed/unsigned integer, narrow and merge elements
 379      of two vectors of floating point elements.  */
 380   OTI_vec_pack_sfix_trunc,
 381   OTI_vec_pack_ufix_trunc,
 382
 383   /* Perform a raise to the power of integer.  */
 384   OTI_powi,
 385
 386   /* Atomic compare and swap.  */
 387   OTI_sync_compare_and_swap,
 388
 389   /* Atomic exchange with acquire semantics.  */
 390   OTI_sync_lock_test_and_set,
 391
 392   /* This second set is atomic operations in which we return the value
 393      that existed in memory before the operation.  */
 394   OTI_sync_old_add,
 395   OTI_sync_old_sub,
 396   OTI_sync_old_ior,
 397   OTI_sync_old_and,
 398   OTI_sync_old_xor,
 399   OTI_sync_old_nand,
 400
 401   /* This third set is atomic operations in which we return the value
 402      that resulted after performing the operation.  */
 403   OTI_sync_new_add,
 404   OTI_sync_new_sub,
 405   OTI_sync_new_ior,
 406   OTI_sync_new_and,
 407   OTI_sync_new_xor,
 408   OTI_sync_new_nand,
 409
 410   OTI_MAX
 411 };
 412
 413 #define ssadd_optab (&optab_table[OTI_ssadd])
 414 #define usadd_optab (&optab_table[OTI_usadd])
 415 #define sssub_optab (&optab_table[OTI_sssub])
 416 #define ussub_optab (&optab_table[OTI_ussub])
 417 #define ssmul_optab (&optab_table[OTI_ssmul])
 418 #define usmul_optab (&optab_table[OTI_usmul])
 419 #define ssdiv_optab (&optab_table[OTI_ssdiv])
 420 #define usdiv_optab (&optab_table[OTI_usdiv])
 421 #define ssneg_optab (&optab_table[OTI_ssneg])
 422 #define usneg_optab (&optab_table[OTI_usneg])
 423 #define ssashl_optab (&optab_table[OTI_ssashl])
 424 #define usashl_optab (&optab_table[OTI_usashl])
 425
 426 #define add_optab (&optab_table[OTI_add])
 427 #define sub_optab (&optab_table[OTI_sub])
 428 #define smul_optab (&optab_table[OTI_smul])
 429 #define addv_optab (&optab_table[OTI_addv])
 430 #define subv_optab (&optab_table[OTI_subv])
 431 #define smul_highpart_optab (&optab_table[OTI_smul_highpart])
 432 #define umul_highpart_optab (&optab_table[OTI_umul_highpart])
 433 #define smul_widen_optab (&optab_table[OTI_smul_widen])
 434 #define umul_widen_optab (&optab_table[OTI_umul_widen])
 435 #define usmul_widen_optab (&optab_table[OTI_usmul_widen])
 436 #define smadd_widen_optab (&optab_table[OTI_smadd_widen])
 437 #define umadd_widen_optab (&optab_table[OTI_umadd_widen])
 438 #define ssmadd_widen_optab (&optab_table[OTI_ssmadd_widen])
 439 #define usmadd_widen_optab (&optab_table[OTI_usmadd_widen])
 440 #define smsub_widen_optab (&optab_table[OTI_smsub_widen])
 441 #define umsub_widen_optab (&optab_table[OTI_umsub_widen])
 442 #define ssmsub_widen_optab (&optab_table[OTI_ssmsub_widen])
 443 #define usmsub_widen_optab (&optab_table[OTI_usmsub_widen])
 444 #define sdiv_optab (&optab_table[OTI_sdiv])
 445 #define smulv_optab (&optab_table[OTI_smulv])
 446 #define sdivv_optab (&optab_table[OTI_sdivv])
 447 #define sdivmod_optab (&optab_table[OTI_sdivmod])
 448 #define udiv_optab (&optab_table[OTI_udiv])
 449 #define udivmod_optab (&optab_table[OTI_udivmod])
 450 #define smod_optab (&optab_table[OTI_smod])
 451 #define umod_optab (&optab_table[OTI_umod])
 452 #define fmod_optab (&optab_table[OTI_fmod])
 453 #define remainder_optab (&optab_table[OTI_remainder])
 454 #define ftrunc_optab (&optab_table[OTI_ftrunc])
 455 #define and_optab (&optab_table[OTI_and])
 456 #define ior_optab (&optab_table[OTI_ior])
 457 #define xor_optab (&optab_table[OTI_xor])
 458 #define ashl_optab (&optab_table[OTI_ashl])
 459 #define lshr_optab (&optab_table[OTI_lshr])
 460 #define ashr_optab (&optab_table[OTI_ashr])
 461 #define rotl_optab (&optab_table[OTI_rotl])
 462 #define rotr_optab (&optab_table[OTI_rotr])
 463 #define vashl_optab (&optab_table[OTI_vashl])
 464 #define vlshr_optab (&optab_table[OTI_vlshr])
 465 #define vashr_optab (&optab_table[OTI_vashr])
 466 #define vrotl_optab (&optab_table[OTI_vrotl])
 467 #define vrotr_optab (&optab_table[OTI_vrotr])
 468 #define smin_optab (&optab_table[OTI_smin])
 469 #define smax_optab (&optab_table[OTI_smax])
 470 #define umin_optab (&optab_table[OTI_umin])
 471 #define umax_optab (&optab_table[OTI_umax])
 472 #define pow_optab (&optab_table[OTI_pow])
 473 #define atan2_optab (&optab_table[OTI_atan2])
 474 #define fma_optab (&optab_table[OTI_fma])
 475 #define fms_optab (&optab_table[OTI_fms])
 476 #define fnma_optab (&optab_table[OTI_fnma])
 477 #define fnms_optab (&optab_table[OTI_fnms])
 478
 479 #define mov_optab (&optab_table[OTI_mov])
 480 #define movstrict_optab (&optab_table[OTI_movstrict])
 481 #define movmisalign_optab (&optab_table[OTI_movmisalign])
 482 #define storent_optab (&optab_table[OTI_storent])
 483
 484 #define neg_optab (&optab_table[OTI_neg])
 485 #define negv_optab (&optab_table[OTI_negv])
 486 #define abs_optab (&optab_table[OTI_abs])
 487 #define absv_optab (&optab_table[OTI_absv])
 488 #define one_cmpl_optab (&optab_table[OTI_one_cmpl])
 489 #define bswap_optab (&optab_table[OTI_bswap])
 490 #define ffs_optab (&optab_table[OTI_ffs])
 491 #define clz_optab (&optab_table[OTI_clz])
 492 #define ctz_optab (&optab_table[OTI_ctz])
 493 #define clrsb_optab (&optab_table[OTI_clrsb])
 494 #define popcount_optab (&optab_table[OTI_popcount])
 495 #define parity_optab (&optab_table[OTI_parity])
 496 #define sqrt_optab (&optab_table[OTI_sqrt])
 497 #define sincos_optab (&optab_table[OTI_sincos])
 498 #define sin_optab (&optab_table[OTI_sin])
 499 #define asin_optab (&optab_table[OTI_asin])
 500 #define cos_optab (&optab_table[OTI_cos])
 501 #define acos_optab (&optab_table[OTI_acos])
 502 #define exp_optab (&optab_table[OTI_exp])
 503 #define exp10_optab (&optab_table[OTI_exp10])
 504 #define exp2_optab (&optab_table[OTI_exp2])
 505 #define expm1_optab (&optab_table[OTI_expm1])
 506 #define ldexp_optab (&optab_table[OTI_ldexp])
 507 #define scalb_optab (&optab_table[OTI_scalb])
 508 #define significand_optab (&optab_table[OTI_significand])
 509 #define logb_optab (&optab_table[OTI_logb])
 510 #define ilogb_optab (&optab_table[OTI_ilogb])
 511 #define log_optab (&optab_table[OTI_log])
 512 #define log10_optab (&optab_table[OTI_log10])
 513 #define log2_optab (&optab_table[OTI_log2])
 514 #define log1p_optab (&optab_table[OTI_log1p])
 515 #define floor_optab (&optab_table[OTI_floor])
 516 #define ceil_optab (&optab_table[OTI_ceil])
 517 #define btrunc_optab (&optab_table[OTI_btrunc])
 518 #define round_optab (&optab_table[OTI_round])
 519 #define nearbyint_optab (&optab_table[OTI_nearbyint])
 520 #define rint_optab (&optab_table[OTI_rint])
 521 #define tan_optab (&optab_table[OTI_tan])
 522 #define atan_optab (&optab_table[OTI_atan])
 523 #define copysign_optab (&optab_table[OTI_copysign])
 524 #define signbit_optab (&optab_table[OTI_signbit])
 525 #define isinf_optab (&optab_table[OTI_isinf])
 526
 527 #define cmp_optab (&optab_table[OTI_cmp])
 528 #define ucmp_optab (&optab_table[OTI_ucmp])
 529
 530 #define eq_optab (&optab_table[OTI_eq])
 531 #define ne_optab (&optab_table[OTI_ne])
 532 #define gt_optab (&optab_table[OTI_gt])
 533 #define ge_optab (&optab_table[OTI_ge])
 534 #define lt_optab (&optab_table[OTI_lt])
 535 #define le_optab (&optab_table[OTI_le])
 536 #define unord_optab (&optab_table[OTI_unord])
 537
 538 #define strlen_optab (&optab_table[OTI_strlen])
 539
 540 #define cbranch_optab (&optab_table[OTI_cbranch])
 541 #define cmov_optab (&optab_table[OTI_cmov])
 542 #define cstore_optab (&optab_table[OTI_cstore])
 543 #define ctrap_optab (&optab_table[OTI_ctrap])
 544
 545 #define push_optab (&optab_table[OTI_push])
 546 #define addcc_optab (&optab_table[OTI_addcc])
 547
 548 #define reduc_smax_optab (&optab_table[OTI_reduc_smax])
 549 #define reduc_umax_optab (&optab_table[OTI_reduc_umax])
 550 #define reduc_smin_optab (&optab_table[OTI_reduc_smin])
 551 #define reduc_umin_optab (&optab_table[OTI_reduc_umin])
 552 #define reduc_splus_optab (&optab_table[OTI_reduc_splus])
 553 #define reduc_uplus_optab (&optab_table[OTI_reduc_uplus])
 554
 555 #define ssum_widen_optab (&optab_table[OTI_ssum_widen])
 556 #define usum_widen_optab (&optab_table[OTI_usum_widen])
 557 #define sdot_prod_optab (&optab_table[OTI_sdot_prod])
 558 #define udot_prod_optab (&optab_table[OTI_udot_prod])
 559
 560 #define vec_set_optab (&optab_table[OTI_vec_set])
 561 #define vec_extract_optab (&optab_table[OTI_vec_extract])
 562 #define vec_extract_even_optab (&optab_table[OTI_vec_extract_even])
 563 #define vec_extract_odd_optab (&optab_table[OTI_vec_extract_odd])
 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_ushiftl_hi_optab (&optab_table[OTI_vec_widen_ushiftl_hi])
 573 #define vec_widen_ushiftl_lo_optab (&optab_table[OTI_vec_widen_ushiftl_lo])
 574 #define vec_widen_sshiftl_hi_optab (&optab_table[OTI_vec_widen_sshiftl_hi])
 575 #define vec_widen_sshiftl_lo_optab (&optab_table[OTI_vec_widen_sshiftl_lo])
 576 #define vec_unpacks_hi_optab (&optab_table[OTI_vec_unpacks_hi])
 577 #define vec_unpacks_lo_optab (&optab_table[OTI_vec_unpacks_lo])
 578 #define vec_unpacku_hi_optab (&optab_table[OTI_vec_unpacku_hi])
 579 #define vec_unpacku_lo_optab (&optab_table[OTI_vec_unpacku_lo])
 580 #define vec_unpacks_float_hi_optab (&optab_table[OTI_vec_unpacks_float_hi])
 581 #define vec_unpacks_float_lo_optab (&optab_table[OTI_vec_unpacks_float_lo])
 582 #define vec_unpacku_float_hi_optab (&optab_table[OTI_vec_unpacku_float_hi])
 583 #define vec_unpacku_float_lo_optab (&optab_table[OTI_vec_unpacku_float_lo])
 584 #define vec_pack_trunc_optab (&optab_table[OTI_vec_pack_trunc])
 585 #define vec_pack_ssat_optab (&optab_table[OTI_vec_pack_ssat])
 586 #define vec_pack_usat_optab (&optab_table[OTI_vec_pack_usat])
 587 #define vec_pack_sfix_trunc_optab (&optab_table[OTI_vec_pack_sfix_trunc])
 588 #define vec_pack_ufix_trunc_optab (&optab_table[OTI_vec_pack_ufix_trunc])
 589
 590 #define powi_optab (&optab_table[OTI_powi])
 591
 592 #define sync_compare_and_swap_optab \
 593   (&optab_table[(int) OTI_sync_compare_and_swap])
 594 #define sync_lock_test_and_set_optab \
 595   (&optab_table[(int) OTI_sync_lock_test_and_set])
 596 #define sync_old_add_optab (&optab_table[(int) OTI_sync_old_add])
 597 #define sync_old_sub_optab (&optab_table[(int) OTI_sync_old_sub])
 598 #define sync_old_ior_optab (&optab_table[(int) OTI_sync_old_ior])
 599 #define sync_old_and_optab (&optab_table[(int) OTI_sync_old_and])
 600 #define sync_old_xor_optab (&optab_table[(int) OTI_sync_old_xor])
 601 #define sync_old_nand_optab (&optab_table[(int) OTI_sync_old_nand])
 602 #define sync_new_add_optab (&optab_table[(int) OTI_sync_new_add])
 603 #define sync_new_sub_optab (&optab_table[(int) OTI_sync_new_sub])
 604 #define sync_new_ior_optab (&optab_table[(int) OTI_sync_new_ior])
 605 #define sync_new_and_optab (&optab_table[(int) OTI_sync_new_and])
 606 #define sync_new_xor_optab (&optab_table[(int) OTI_sync_new_xor])
 607 #define sync_new_nand_optab (&optab_table[(int) OTI_sync_new_nand])
 608
 609 /* Conversion optabs have their own table and indexes.  */
 610 enum convert_optab_index
 611 {
 612   COI_sext,
 613   COI_zext,
 614   COI_trunc,
 615
 616   COI_sfix,
 617   COI_ufix,
 618
 619   COI_sfixtrunc,
 620   COI_ufixtrunc,
 621
 622   COI_sfloat,
 623   COI_ufloat,
 624
 625   COI_lrint,
 626   COI_lround,
 627   COI_lfloor,
 628   COI_lceil,
 629
 630   COI_fract,
 631   COI_fractuns,
 632   COI_satfract,
 633   COI_satfractuns,
 634
 635   COI_vec_load_lanes,
 636   COI_vec_store_lanes,
 637
 638   /* Vector conditional operations.  */
 639   COI_vcond,
 640   COI_vcondu,
 641
 642   COI_MAX
 643 };
 644
 645 #define sext_optab (&convert_optab_table[COI_sext])
 646 #define zext_optab (&convert_optab_table[COI_zext])
 647 #define trunc_optab (&convert_optab_table[COI_trunc])
 648 #define sfix_optab (&convert_optab_table[COI_sfix])
 649 #define ufix_optab (&convert_optab_table[COI_ufix])
 650 #define sfixtrunc_optab (&convert_optab_table[COI_sfixtrunc])
 651 #define ufixtrunc_optab (&convert_optab_table[COI_ufixtrunc])
 652 #define sfloat_optab (&convert_optab_table[COI_sfloat])
 653 #define ufloat_optab (&convert_optab_table[COI_ufloat])
 654 #define lrint_optab (&convert_optab_table[COI_lrint])
 655 #define lround_optab (&convert_optab_table[COI_lround])
 656 #define lfloor_optab (&convert_optab_table[COI_lfloor])
 657 #define lceil_optab (&convert_optab_table[COI_lceil])
 658 #define fract_optab (&convert_optab_table[COI_fract])
 659 #define fractuns_optab (&convert_optab_table[COI_fractuns])
 660 #define satfract_optab (&convert_optab_table[COI_satfract])
 661 #define satfractuns_optab (&convert_optab_table[COI_satfractuns])
 662 #define vec_load_lanes_optab (&convert_optab_table[COI_vec_load_lanes])
 663 #define vec_store_lanes_optab (&convert_optab_table[COI_vec_store_lanes])
 664 #define vcond_optab (&convert_optab_table[(int) COI_vcond])
 665 #define vcondu_optab (&convert_optab_table[(int) COI_vcondu])
 666
 667 /* Contains the optab used for each rtx code.  */
 668 extern optab code_to_optab[NUM_RTX_CODE + 1];
 669
 670 \f
 671 typedef rtx (*rtxfun) (rtx);
 672
 673 /* Enumerates operations that have a named .md pattern associated
 674    with them, but which are not implemented as library functions.  */
 675 enum direct_optab_index
 676 {
 677 #ifdef HAVE_conditional_move
 678   /* Conditional move operations.  */
 679   DOI_movcc,
 680 #endif
 681
 682   /* Operations that use a scratch register to perform input and output
 683      reloads of special objects.  */
 684   DOI_reload_in,
 685   DOI_reload_out,
 686
 687   /* Block move operation.  */
 688   DOI_movmem,
 689
 690   /* Block set operation.  */
 691   DOI_setmem,
 692
 693   /* Various types of block compare operation.  */
 694   DOI_cmpstr,
 695   DOI_cmpstrn,
 696   DOI_cmpmem,
 697
 698   /* Atomic clear with release semantics.  */
 699   DOI_sync_lock_release,
 700
 701   /* Atomic operation with no resulting value.  */
 702   DOI_sync_add,
 703   DOI_sync_sub,
 704   DOI_sync_ior,
 705   DOI_sync_and,
 706   DOI_sync_xor,
 707   DOI_sync_nand,
 708
 709   /* Atomic operations with memory model parameters. */
 710   DOI_atomic_exchange,
 711   DOI_atomic_compare_and_swap,
 712   DOI_atomic_load,
 713   DOI_atomic_store,
 714   DOI_atomic_add_fetch,
 715   DOI_atomic_sub_fetch,
 716   DOI_atomic_and_fetch,
 717   DOI_atomic_nand_fetch,
 718   DOI_atomic_xor_fetch,
 719   DOI_atomic_or_fetch,
 720   DOI_atomic_fetch_add,
 721   DOI_atomic_fetch_sub,
 722   DOI_atomic_fetch_and,
 723   DOI_atomic_fetch_nand,
 724   DOI_atomic_fetch_xor,
 725   DOI_atomic_fetch_or,
 726   DOI_atomic_add,
 727   DOI_atomic_sub,
 728   DOI_atomic_and,
 729   DOI_atomic_nand,
 730   DOI_atomic_xor,
 731   DOI_atomic_or,
 732   DOI_atomic_always_lock_free,
 733   DOI_atomic_is_lock_free,
 734   DOI_atomic_thread_fence,
 735   DOI_atomic_signal_fence,
 736
 737   /* Vector permutation.  */
 738   DOI_vec_perm,
 739   DOI_vec_perm_const,
 740
 741   DOI_MAX
 742 };
 743
 744 /* A structure that says which insn should be used to perform an operation
 745    in a particular mode.  */
 746 struct direct_optab_d
 747 {
 748   struct optab_handlers handlers[NUM_MACHINE_MODES];
 749 };
 750 typedef struct direct_optab_d *direct_optab;
 751
 752 #ifdef HAVE_conditional_move
 753 #define movcc_optab (&direct_optab_table[(int) DOI_movcc])
 754 #endif
 755 #define reload_in_optab (&direct_optab_table[(int) DOI_reload_in])
 756 #define reload_out_optab (&direct_optab_table[(int) DOI_reload_out])
 757 #define movmem_optab (&direct_optab_table[(int) DOI_movmem])
 758 #define setmem_optab (&direct_optab_table[(int) DOI_setmem])
 759 #define cmpstr_optab (&direct_optab_table[(int) DOI_cmpstr])
 760 #define cmpstrn_optab (&direct_optab_table[(int) DOI_cmpstrn])
 761 #define cmpmem_optab (&direct_optab_table[(int) DOI_cmpmem])
 762 #define sync_lock_release_optab \
 763   (&direct_optab_table[(int) DOI_sync_lock_release])
 764 #define sync_add_optab (&direct_optab_table[(int) DOI_sync_add])
 765 #define sync_sub_optab (&direct_optab_table[(int) DOI_sync_sub])
 766 #define sync_ior_optab (&direct_optab_table[(int) DOI_sync_ior])
 767 #define sync_and_optab (&direct_optab_table[(int) DOI_sync_and])
 768 #define sync_xor_optab (&direct_optab_table[(int) DOI_sync_xor])
 769 #define sync_nand_optab (&direct_optab_table[(int) DOI_sync_nand])
 770
 771 #define atomic_exchange_optab \
 772   (&direct_optab_table[(int) DOI_atomic_exchange])
 773 #define atomic_compare_and_swap_optab \
 774   (&direct_optab_table[(int) DOI_atomic_compare_and_swap])
 775 #define atomic_load_optab \
 776   (&direct_optab_table[(int) DOI_atomic_load])
 777 #define atomic_store_optab \
 778   (&direct_optab_table[(int) DOI_atomic_store])
 779 #define atomic_add_fetch_optab \
 780   (&direct_optab_table[(int) DOI_atomic_add_fetch])
 781 #define atomic_sub_fetch_optab \
 782   (&direct_optab_table[(int) DOI_atomic_sub_fetch])
 783 #define atomic_and_fetch_optab \
 784   (&direct_optab_table[(int) DOI_atomic_and_fetch])
 785 #define atomic_nand_fetch_optab \
 786   (&direct_optab_table[(int) DOI_atomic_nand_fetch])
 787 #define atomic_xor_fetch_optab \
 788   (&direct_optab_table[(int) DOI_atomic_xor_fetch])
 789 #define atomic_or_fetch_optab \
 790   (&direct_optab_table[(int) DOI_atomic_or_fetch])
 791 #define atomic_fetch_add_optab \
 792   (&direct_optab_table[(int) DOI_atomic_fetch_add])
 793 #define atomic_fetch_sub_optab \
 794   (&direct_optab_table[(int) DOI_atomic_fetch_sub])
 795 #define atomic_fetch_and_optab \
 796   (&direct_optab_table[(int) DOI_atomic_fetch_and])
 797 #define atomic_fetch_nand_optab \
 798   (&direct_optab_table[(int) DOI_atomic_fetch_nand])
 799 #define atomic_fetch_xor_optab \
 800   (&direct_optab_table[(int) DOI_atomic_fetch_xor])
 801 #define atomic_fetch_or_optab \
 802   (&direct_optab_table[(int) DOI_atomic_fetch_or])
 803 #define atomic_add_optab \
 804   (&direct_optab_table[(int) DOI_atomic_add])
 805 #define atomic_sub_optab \
 806   (&direct_optab_table[(int) DOI_atomic_sub])
 807 #define atomic_and_optab \
 808   (&direct_optab_table[(int) DOI_atomic_and])
 809 #define atomic_nand_optab \
 810   (&direct_optab_table[(int) DOI_atomic_nand])
 811 #define atomic_xor_optab \
 812   (&direct_optab_table[(int) DOI_atomic_xor])
 813 #define atomic_or_optab \
 814   (&direct_optab_table[(int) DOI_atomic_or])
 815 #define atomic_always_lock_free_optab \
 816   (&direct_optab_table[(int) DOI_atomic_always_lock_free])
 817 #define atomic_is_lock_free_optab \
 818   (&direct_optab_table[(int) DOI_atomic_is_lock_free])
 819 #define atomic_thread_fence_optab \
 820   (&direct_optab_table[(int) DOI_atomic_thread_fence])
 821 #define atomic_signal_fence_optab \
 822   (&direct_optab_table[(int) DOI_atomic_signal_fence])
 823
 824 #define vec_perm_optab (&direct_optab_table[DOI_vec_perm])
 825 #define vec_perm_const_optab (&direct_optab_table[(int) DOI_vec_perm_const])
 826 \f
 827 /* Target-dependent globals.  */
 828 struct target_optabs {
 829   /* Tables of patterns that may have an associated libcall.  */
 830   struct optab_d x_optab_table[(int) OTI_MAX];
 831
 832   /* Tables of patterns for converting one mode to another.  */
 833   struct convert_optab_d x_convert_optab_table[(int) COI_MAX];
 834
 835   /* Tables of patterns for direct optabs (i.e. those which cannot be
 836      implemented using a libcall).  */
 837   struct direct_optab_d x_direct_optab_table[(int) DOI_MAX];
 838 };
 839
 840 extern struct target_optabs default_target_optabs;
 841 #if SWITCHABLE_TARGET
 842 extern struct target_optabs *this_target_optabs;
 843 #else
 844 #define this_target_optabs (&default_target_optabs)
 845 #endif
 846
 847 #define optab_table \
 848   (this_target_optabs->x_optab_table)
 849 #define convert_optab_table \
 850   (this_target_optabs->x_convert_optab_table)
 851 #define direct_optab_table \
 852   (this_target_optabs->x_direct_optab_table)
 853 \f
 854 /* Define functions given in optabs.c.  */
 855
 856 extern rtx expand_widen_pattern_expr (sepops ops, rtx op0, rtx op1, rtx wide_op,
 857                                       rtx target, int unsignedp);
 858
 859 extern rtx expand_ternary_op (enum machine_mode mode, optab ternary_optab,
 860                               rtx op0, rtx op1, rtx op2, rtx target,
 861                               int unsignedp);
 862
 863 /* Expand a binary operation given optab and rtx operands.  */
 864 extern rtx expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
 865                          enum optab_methods);
 866
 867 extern bool force_expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
 868                                 enum optab_methods);
 869
 870 /* Expand a binary operation with both signed and unsigned forms.  */
 871 extern rtx sign_expand_binop (enum machine_mode, optab, optab, rtx, rtx,
 872                               rtx, int, enum optab_methods);
 873
 874 /* Generate code to perform an operation on one operand with two results.  */
 875 extern int expand_twoval_unop (optab, rtx, rtx, rtx, int);
 876
 877 /* Generate code to perform an operation on two operands with two results.  */
 878 extern int expand_twoval_binop (optab, rtx, rtx, rtx, rtx, int);
 879
 880 /* Generate code to perform an operation on two operands with two
 881    results, using a library function.  */
 882 extern bool expand_twoval_binop_libfunc (optab, rtx, rtx, rtx, rtx,
 883                                          enum rtx_code);
 884
 885 /* Expand a unary arithmetic operation given optab rtx operand.  */
 886 extern rtx expand_unop (enum machine_mode, optab, rtx, rtx, int);
 887
 888 /* Expand the absolute value operation.  */
 889 extern rtx expand_abs_nojump (enum machine_mode, rtx, rtx, int);
 890 extern rtx expand_abs (enum machine_mode, rtx, rtx, int, int);
 891
 892 /* Expand the one's complement absolute value operation.  */
 893 extern rtx expand_one_cmpl_abs_nojump (enum machine_mode, rtx, rtx);
 894
 895 /* Expand the copysign operation.  */
 896 extern rtx expand_copysign (rtx, rtx, rtx);
 897
 898 /* Generate an instruction with a given INSN_CODE with an output and
 899    an input.  */
 900 extern void emit_unop_insn (enum insn_code, rtx, rtx, enum rtx_code);
 901 extern bool maybe_emit_unop_insn (enum insn_code, rtx, rtx, enum rtx_code);
 902
 903 /* Find a widening optab even if it doesn't widen as much as we want.  */
 904 #define find_widening_optab_handler(A,B,C,D) \
 905   find_widening_optab_handler_and_mode (A, B, C, D, NULL)
 906 extern enum insn_code find_widening_optab_handler_and_mode (optab,
 907                                                             enum machine_mode,
 908                                                             enum machine_mode,
 909                                                             int,
 910                                                             enum machine_mode *);
 911
 912 /* An extra flag to control optab_for_tree_code's behavior.  This is needed to
 913    distinguish between machines with a vector shift that takes a scalar for the
 914    shift amount vs. machines that take a vector for the shift amount.  */
 915 enum optab_subtype
 916 {
 917   optab_default,
 918   optab_scalar,
 919   optab_vector
 920 };
 921
 922 /* Return the optab used for computing the given operation on the type given by
 923    the second argument.  The third argument distinguishes between the types of
 924    vector shifts and rotates */
 925 extern optab optab_for_tree_code (enum tree_code, const_tree, enum optab_subtype);
 926
 927 /* The various uses that a comparison can have; used by can_compare_p:
 928    jumps, conditional moves, store flag operations.  */
 929 enum can_compare_purpose
 930 {
 931   ccp_jump,
 932   ccp_cmov,
 933   ccp_store_flag
 934 };
 935
 936 /* Nonzero if a compare of mode MODE can be done straightforwardly
 937    (without splitting it into pieces).  */
 938 extern int can_compare_p (enum rtx_code, enum machine_mode,
 939                           enum can_compare_purpose);
 940
 941 /* Return the INSN_CODE to use for an extend operation.  */
 942 extern enum insn_code can_extend_p (enum machine_mode, enum machine_mode, int);
 943
 944 /* Generate the body of an insn to extend Y (with mode MFROM)
 945    into X (with mode MTO).  Do zero-extension if UNSIGNEDP is nonzero.  */
 946 extern rtx gen_extend_insn (rtx, rtx, enum machine_mode,
 947                             enum machine_mode, int);
 948
 949 /* Call this to reset the function entry for one optab.  */
 950 extern void set_optab_libfunc (optab, enum machine_mode, const char *);
 951 extern void set_conv_libfunc (convert_optab, enum machine_mode,
 952                               enum machine_mode, const char *);
 953
 954 /* Call this to install all of the __sync libcalls up to size MAX.  */
 955 extern void init_sync_libfuncs (int max);
 956
 957 /* Generate code for a FIXED_CONVERT_EXPR.  */
 958 extern void expand_fixed_convert (rtx, rtx, int, int);
 959
 960 /* Generate code for a FLOAT_EXPR.  */
 961 extern void expand_float (rtx, rtx, int);
 962
 963 /* Return the insn_code for a FLOAT_EXPR.  */
 964 enum insn_code can_float_p (enum machine_mode, enum machine_mode, int);
 965
 966 /* Return true if there is an inline compare and swap pattern.  */
 967 extern bool can_compare_and_swap_p (enum machine_mode, bool);
 968
 969 /* Return true if there is an inline atomic exchange pattern.  */
 970 extern bool can_atomic_exchange_p (enum machine_mode, bool);
 971
 972 /* Generate code for a compare and swap.  */
 973 extern bool expand_atomic_compare_and_swap (rtx *, rtx *, rtx, rtx, rtx, bool,
 974                                             enum memmodel, enum memmodel);
 975
 976 /* Generate memory barriers.  */
 977 extern void expand_mem_thread_fence (enum memmodel);
 978 extern void expand_mem_signal_fence (enum memmodel);
 979
 980 /* Check whether an operation represented by the code CODE is a
 981    convert operation that is supported by the target platform in
 982    vector form */
 983 bool supportable_convert_operation (enum tree_code, tree, tree, tree *,
 984                                     enum tree_code *);
 985
 986 /* Generate code for a FIX_EXPR.  */
 987 extern void expand_fix (rtx, rtx, int);
 988
 989 /* Generate code for float to integral conversion.  */
 990 extern bool expand_sfix_optab (rtx, rtx, convert_optab);
 991
 992 /* Generate code for a widening multiply.  */
 993 extern rtx expand_widening_mult (enum machine_mode, rtx, rtx, rtx, int, optab);
 994
 995 /* Return tree if target supports vector operations for COND_EXPR.  */
 996 bool expand_vec_cond_expr_p (tree, tree);
 997
 998 /* Generate code for VEC_COND_EXPR.  */
 999 extern rtx expand_vec_cond_expr (tree, tree, tree, tree, rtx);
1000 /* Generate code for VEC_LSHIFT_EXPR and VEC_RSHIFT_EXPR.  */
1001 extern rtx expand_vec_shift_expr (sepops, rtx);
1002
1003 /* Return tree if target supports vector operations for VEC_PERM_EXPR.  */
1004 extern bool can_vec_perm_p (enum machine_mode, bool, const unsigned char *);
1005
1006 /* Return true if target supports vector operations using VEC_PERM_EXPR.  */
1007 extern bool can_vec_perm_for_code_p (enum tree_code, enum machine_mode, rtx *);
1008
1009 /* Generate code for VEC_PERM_EXPR.  */
1010 extern rtx expand_vec_perm (enum machine_mode, rtx, rtx, rtx, rtx);
1011
1012 /* Return the insn used to implement mode MODE of OP, or CODE_FOR_nothing
1013    if the target does not have such an insn.  */
1014
1015 static inline enum insn_code
1016 optab_handler (optab op, enum machine_mode mode)
1017 {
1018   return (enum insn_code) (op->handlers[(int) mode].insn_code
1019                            + (int) CODE_FOR_nothing);
1020 }
1021
1022 /* Like optab_handler, but for widening_operations that have a TO_MODE and
1023   a FROM_MODE.  */
1024
1025 static inline enum insn_code
1026 widening_optab_handler (optab op, enum machine_mode to_mode,
1027                         enum machine_mode from_mode)
1028 {
1029   if (to_mode == from_mode || from_mode == VOIDmode)
1030     return optab_handler (op, to_mode);
1031
1032   if (op->widening)
1033     return (enum insn_code) (op->widening->handlers[(int) to_mode][(int) from_mode].insn_code
1034                              + (int) CODE_FOR_nothing);
1035
1036   return CODE_FOR_nothing;
1037 }
1038
1039 /* Record that insn CODE should be used to implement mode MODE of OP.  */
1040
1041 static inline void
1042 set_optab_handler (optab op, enum machine_mode mode, enum insn_code code)
1043 {
1044   op->handlers[(int) mode].insn_code = (int) code - (int) CODE_FOR_nothing;
1045 }
1046
1047 /* Like set_optab_handler, but for widening operations that have a TO_MODE
1048    and a FROM_MODE.  */
1049
1050 static inline void
1051 set_widening_optab_handler (optab op, enum machine_mode to_mode,
1052                             enum machine_mode from_mode, enum insn_code code)
1053 {
1054   if (to_mode == from_mode)
1055     set_optab_handler (op, to_mode, code);
1056   else
1057     {
1058       if (op->widening == NULL)
1059         op->widening = (struct widening_optab_handlers *)
1060               xcalloc (1, sizeof (struct widening_optab_handlers));
1061
1062       op->widening->handlers[(int) to_mode][(int) from_mode].insn_code
1063           = (int) code - (int) CODE_FOR_nothing;
1064     }
1065 }
1066
1067 /* Return the insn used to perform conversion OP from mode FROM_MODE
1068    to mode TO_MODE; return CODE_FOR_nothing if the target does not have
1069    such an insn.  */
1070
1071 static inline enum insn_code
1072 convert_optab_handler (convert_optab op, enum machine_mode to_mode,
1073                        enum machine_mode from_mode)
1074 {
1075   return ((enum insn_code)
1076           (op->handlers[(int) to_mode][(int) from_mode].insn_code
1077            + (int) CODE_FOR_nothing));
1078 }
1079
1080 /* Record that insn CODE should be used to perform conversion OP
1081    from mode FROM_MODE to mode TO_MODE.  */
1082
1083 static inline void
1084 set_convert_optab_handler (convert_optab op, enum machine_mode to_mode,
1085                            enum machine_mode from_mode, enum insn_code code)
1086 {
1087   op->handlers[(int) to_mode][(int) from_mode].insn_code
1088     = (int) code - (int) CODE_FOR_nothing;
1089 }
1090
1091 /* Return the insn used to implement mode MODE of OP, or CODE_FOR_nothing
1092    if the target does not have such an insn.  */
1093
1094 static inline enum insn_code
1095 direct_optab_handler (direct_optab op, enum machine_mode mode)
1096 {
1097   return (enum insn_code) (op->handlers[(int) mode].insn_code
1098                            + (int) CODE_FOR_nothing);
1099 }
1100
1101 /* Record that insn CODE should be used to implement mode MODE of OP.  */
1102
1103 static inline void
1104 set_direct_optab_handler (direct_optab op, enum machine_mode mode,
1105                           enum insn_code code)
1106 {
1107   op->handlers[(int) mode].insn_code = (int) code - (int) CODE_FOR_nothing;
1108 }
1109
1110 extern rtx optab_libfunc (optab optab, enum machine_mode mode);
1111 extern rtx convert_optab_libfunc (convert_optab optab, enum machine_mode mode1,
1112                                   enum machine_mode mode2);
1113
1114 extern bool insn_operand_matches (enum insn_code icode, unsigned int opno,
1115                                   rtx operand);
1116
1117 /* Describes the type of an expand_operand.  Each value is associated
1118    with a create_*_operand function; see the comments above those
1119    functions for details.  */
1120 enum expand_operand_type {
1121   EXPAND_FIXED,
1122   EXPAND_OUTPUT,
1123   EXPAND_INPUT,
1124   EXPAND_CONVERT_TO,
1125   EXPAND_CONVERT_FROM,
1126   EXPAND_ADDRESS,
1127   EXPAND_INTEGER
1128 };
1129
1130 /* Information about an operand for instruction expansion.  */
1131 struct expand_operand {
1132   /* The type of operand.  */
1133   ENUM_BITFIELD (expand_operand_type) type : 8;
1134
1135   /* True if any conversion should treat VALUE as being unsigned
1136      rather than signed.  Only meaningful for certain types.  */
1137   unsigned int unsigned_p : 1;
1138
1139   /* Unused; available for future use.  */
1140   unsigned int unused : 7;
1141
1142   /* The mode passed to the convert_*_operand function.  It has a
1143      type-dependent meaning.  */
1144   ENUM_BITFIELD (machine_mode) mode : 16;
1145
1146   /* The value of the operand.  */
1147   rtx value;
1148 };
1149
1150 /* Initialize OP with the given fields.  Initialise the other fields
1151    to their default values.  */
1152
1153 static inline void
1154 create_expand_operand (struct expand_operand *op,
1155                        enum expand_operand_type type,
1156                        rtx value, enum machine_mode mode,
1157                        bool unsigned_p)
1158 {
1159   op->type = type;
1160   op->unsigned_p = unsigned_p;
1161   op->unused = 0;
1162   op->mode = mode;
1163   op->value = value;
1164 }
1165
1166 /* Make OP describe an operand that must use rtx X, even if X is volatile.  */
1167
1168 static inline void
1169 create_fixed_operand (struct expand_operand *op, rtx x)
1170 {
1171   create_expand_operand (op, EXPAND_FIXED, x, VOIDmode, false);
1172 }
1173
1174 /* Make OP describe an output operand that must have mode MODE.
1175    X, if nonnull, is a suggestion for where the output should be stored.
1176    It is OK for VALUE to be inconsistent with MODE, although it will just
1177    be ignored in that case.  */
1178
1179 static inline void
1180 create_output_operand (struct expand_operand *op, rtx x,
1181                        enum machine_mode mode)
1182 {
1183   create_expand_operand (op, EXPAND_OUTPUT, x, mode, false);
1184 }
1185
1186 /* Make OP describe an input operand that must have mode MODE and
1187    value VALUE; MODE cannot be VOIDmode.  The backend may request that
1188    VALUE be copied into a different kind of rtx before being passed
1189    as an operand.  */
1190
1191 static inline void
1192 create_input_operand (struct expand_operand *op, rtx value,
1193                       enum machine_mode mode)
1194 {
1195   create_expand_operand (op, EXPAND_INPUT, value, mode, false);
1196 }
1197
1198 /* Like create_input_operand, except that VALUE must first be converted
1199    to mode MODE.  UNSIGNED_P says whether VALUE is unsigned.  */
1200
1201 static inline void
1202 create_convert_operand_to (struct expand_operand *op, rtx value,
1203                            enum machine_mode mode, bool unsigned_p)
1204 {
1205   create_expand_operand (op, EXPAND_CONVERT_TO, value, mode, unsigned_p);
1206 }
1207
1208 /* Make OP describe an input operand that should have the same value
1209    as VALUE, after any mode conversion that the backend might request.
1210    If VALUE is a CONST_INT, it should be treated as having mode MODE.
1211    UNSIGNED_P says whether VALUE is unsigned.  */
1212
1213 static inline void
1214 create_convert_operand_from (struct expand_operand *op, rtx value,
1215                              enum machine_mode mode, bool unsigned_p)
1216 {
1217   create_expand_operand (op, EXPAND_CONVERT_FROM, value, mode, unsigned_p);
1218 }
1219
1220 extern void create_convert_operand_from_type (struct expand_operand *op,
1221                                               rtx value, tree type);
1222
1223 /* Make OP describe an input Pmode address operand.  VALUE is the value
1224    of the address, but it may need to be converted to Pmode first.  */
1225
1226 static inline void
1227 create_address_operand (struct expand_operand *op, rtx value)
1228 {
1229   create_expand_operand (op, EXPAND_ADDRESS, value, Pmode, false);
1230 }
1231
1232 /* Make OP describe an input operand that has value INTVAL and that has
1233    no inherent mode.  This function should only be used for operands that
1234    are always expand-time constants.  The backend may request that INTVAL
1235    be copied into a different kind of rtx, but it must specify the mode
1236    of that rtx if so.  */
1237
1238 static inline void
1239 create_integer_operand (struct expand_operand *op, HOST_WIDE_INT intval)
1240 {
1241   create_expand_operand (op, EXPAND_INTEGER, GEN_INT (intval), VOIDmode, false);
1242 }
1243
1244 extern bool valid_multiword_target_p (rtx);
1245
1246 extern bool maybe_legitimize_operands (enum insn_code icode,
1247                                        unsigned int opno, unsigned int nops,
1248                                        struct expand_operand *ops);
1249 extern rtx maybe_gen_insn (enum insn_code icode, unsigned int nops,
1250                            struct expand_operand *ops);
1251 extern bool maybe_expand_insn (enum insn_code icode, unsigned int nops,
1252                                struct expand_operand *ops);
1253 extern bool maybe_expand_jump_insn (enum insn_code icode, unsigned int nops,
1254                                     struct expand_operand *ops);
1255 extern void expand_insn (enum insn_code icode, unsigned int nops,
1256                          struct expand_operand *ops);
1257 extern void expand_jump_insn (enum insn_code icode, unsigned int nops,
1258                               struct expand_operand *ops);
1259
1260 extern rtx prepare_operand (enum insn_code, rtx, int, enum machine_mode,
1261                             enum machine_mode, int);
1262
1263 #endif /* GCC_OPTABS_H */