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