1 /* Definitions for code generation pass of GNU compiler.
2 Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006
3 Free Software Foundation, Inc.
5 This file is part of GCC.
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 2, or (at your option)
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.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to
19 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
25 #include "insn-codes.h"
27 /* Optabs are tables saying how to generate insn bodies
28 for various machine modes and numbers of operands.
29 Each optab applies to one operation.
31 For example, add_optab applies to addition.
33 The insn_code slot is the enum insn_code that says how to
34 generate an insn for this operation on a particular machine mode.
35 It is CODE_FOR_nothing if there is no such insn on the target machine.
37 The `lib_call' slot is the name of the library function that
38 can be used to perform the operation.
40 A few optabs, such as move_optab and cmp_optab, are used
43 struct optab_handlers GTY(())
45 enum insn_code insn_code;
52 struct optab_handlers handlers[NUM_MACHINE_MODES];
54 typedef struct optab * optab;
56 /* A convert_optab is for some sort of conversion operation between
57 modes. The first array index is the destination mode, the second
58 is the source mode. */
59 struct convert_optab GTY(())
62 struct optab_handlers handlers[NUM_MACHINE_MODES][NUM_MACHINE_MODES];
64 typedef struct convert_optab *convert_optab;
66 /* Given an enum insn_code, access the function to construct
67 the body of that kind of insn. */
68 #define GEN_FCN(CODE) (insn_data[CODE].genfun)
70 /* Enumeration of valid indexes into optab_table. */
78 /* Signed and fp multiply */
81 /* Signed multiply, return high word */
84 /* Signed multiply with result one machine mode wider than args */
87 /* Widening multiply of one unsigned and one signed operand. */
93 /* Signed divide-and-remainder in one */
97 /* Signed remainder */
100 /* Floating point remainder functions */
103 /* Convert float to integer in float fmt */
113 /* Arithmetic shift left */
115 /* Logical shift right */
117 /* Arithmetic shift right */
123 /* Signed and floating-point minimum value */
125 /* Signed and floating-point maximum value */
127 /* Unsigned minimum value */
129 /* Unsigned maximum value */
133 /* Arc tangent of y/x */
136 /* Move instruction. */
138 /* Move, preserving high part of register. */
140 /* Move, with a misaligned memory. */
143 /* Unary operations */
154 /* Bit scanning and counting */
174 /* Base-10 Exponential */
176 /* Base-2 Exponential */
180 /* Load exponent of a floating point number */
182 /* Multiply floating-point number by integral power of radix */
184 /* Radix-independent exponent */
187 /* Natural Logarithm */
189 /* Base-10 Logarithm */
191 /* Base-2 Logarithm */
193 /* logarithm of 1 plus argument */
195 /* Rounding functions */
204 /* Inverse tangent */
209 /* Test for infinite value */
212 /* Compare insn; two operands. */
214 /* Used only for libcalls for unsigned comparisons. */
216 /* tst insn; compare one operand against 0 */
219 /* Floating point comparison optabs - used primarily for libfuncs */
231 /* Combined compare & jump/store flags/move operations. */
236 /* Push instruction. */
239 /* Conditional add instruction. */
242 /* Reduction operations on a vector operand. */
250 /* Summation, with result machine mode one or more wider than args. */
254 /* Dot product, with result machine mode one or more wider than args. */
258 /* Set specified field of vector operand. */
260 /* Extract specified field of vector operand. */
262 /* Extract even/odd fields of vector operands. */
263 OTI_vec_extract_even,
265 /* Interleave fields of vector operands. */
266 OTI_vec_interleave_high,
267 OTI_vec_interleave_low,
268 /* Initialize vector operand. */
270 /* Whole vector shift. The shift amount is in bits. */
273 /* Extract specified elements from vectors, for vector load. */
274 OTI_vec_realign_load,
275 /* Widening multiplication.
276 The high/low part of the resulting vector of products is returned. */
277 OTI_vec_widen_umult_hi,
278 OTI_vec_widen_umult_lo,
279 OTI_vec_widen_smult_hi,
280 OTI_vec_widen_smult_lo,
281 /* Extract and widen the high/low part of a vector of signed or
282 floating point elements. */
285 /* Extract and widen the high/low part of a vector of unsigned
289 /* Narrow (demote) and merge the elements of two vectors. */
294 /* Perform a raise to the power of integer. */
300 extern GTY(()) optab optab_table[OTI_MAX];
302 #define add_optab (optab_table[OTI_add])
303 #define sub_optab (optab_table[OTI_sub])
304 #define smul_optab (optab_table[OTI_smul])
305 #define addv_optab (optab_table[OTI_addv])
306 #define subv_optab (optab_table[OTI_subv])
307 #define smul_highpart_optab (optab_table[OTI_smul_highpart])
308 #define umul_highpart_optab (optab_table[OTI_umul_highpart])
309 #define smul_widen_optab (optab_table[OTI_smul_widen])
310 #define umul_widen_optab (optab_table[OTI_umul_widen])
311 #define usmul_widen_optab (optab_table[OTI_usmul_widen])
312 #define sdiv_optab (optab_table[OTI_sdiv])
313 #define smulv_optab (optab_table[OTI_smulv])
314 #define sdivv_optab (optab_table[OTI_sdivv])
315 #define sdivmod_optab (optab_table[OTI_sdivmod])
316 #define udiv_optab (optab_table[OTI_udiv])
317 #define udivmod_optab (optab_table[OTI_udivmod])
318 #define smod_optab (optab_table[OTI_smod])
319 #define umod_optab (optab_table[OTI_umod])
320 #define fmod_optab (optab_table[OTI_fmod])
321 #define remainder_optab (optab_table[OTI_remainder])
322 #define ftrunc_optab (optab_table[OTI_ftrunc])
323 #define and_optab (optab_table[OTI_and])
324 #define ior_optab (optab_table[OTI_ior])
325 #define xor_optab (optab_table[OTI_xor])
326 #define ashl_optab (optab_table[OTI_ashl])
327 #define lshr_optab (optab_table[OTI_lshr])
328 #define ashr_optab (optab_table[OTI_ashr])
329 #define rotl_optab (optab_table[OTI_rotl])
330 #define rotr_optab (optab_table[OTI_rotr])
331 #define smin_optab (optab_table[OTI_smin])
332 #define smax_optab (optab_table[OTI_smax])
333 #define umin_optab (optab_table[OTI_umin])
334 #define umax_optab (optab_table[OTI_umax])
335 #define pow_optab (optab_table[OTI_pow])
336 #define atan2_optab (optab_table[OTI_atan2])
338 #define mov_optab (optab_table[OTI_mov])
339 #define movstrict_optab (optab_table[OTI_movstrict])
340 #define movmisalign_optab (optab_table[OTI_movmisalign])
342 #define neg_optab (optab_table[OTI_neg])
343 #define negv_optab (optab_table[OTI_negv])
344 #define abs_optab (optab_table[OTI_abs])
345 #define absv_optab (optab_table[OTI_absv])
346 #define one_cmpl_optab (optab_table[OTI_one_cmpl])
347 #define bswap_optab (optab_table[OTI_bswap])
348 #define ffs_optab (optab_table[OTI_ffs])
349 #define clz_optab (optab_table[OTI_clz])
350 #define ctz_optab (optab_table[OTI_ctz])
351 #define popcount_optab (optab_table[OTI_popcount])
352 #define parity_optab (optab_table[OTI_parity])
353 #define sqrt_optab (optab_table[OTI_sqrt])
354 #define sincos_optab (optab_table[OTI_sincos])
355 #define sin_optab (optab_table[OTI_sin])
356 #define asin_optab (optab_table[OTI_asin])
357 #define cos_optab (optab_table[OTI_cos])
358 #define acos_optab (optab_table[OTI_acos])
359 #define exp_optab (optab_table[OTI_exp])
360 #define exp10_optab (optab_table[OTI_exp10])
361 #define exp2_optab (optab_table[OTI_exp2])
362 #define expm1_optab (optab_table[OTI_expm1])
363 #define ldexp_optab (optab_table[OTI_ldexp])
364 #define scalb_optab (optab_table[OTI_scalb])
365 #define logb_optab (optab_table[OTI_logb])
366 #define ilogb_optab (optab_table[OTI_ilogb])
367 #define log_optab (optab_table[OTI_log])
368 #define log10_optab (optab_table[OTI_log10])
369 #define log2_optab (optab_table[OTI_log2])
370 #define log1p_optab (optab_table[OTI_log1p])
371 #define floor_optab (optab_table[OTI_floor])
372 #define ceil_optab (optab_table[OTI_ceil])
373 #define btrunc_optab (optab_table[OTI_btrunc])
374 #define round_optab (optab_table[OTI_round])
375 #define nearbyint_optab (optab_table[OTI_nearbyint])
376 #define rint_optab (optab_table[OTI_rint])
377 #define tan_optab (optab_table[OTI_tan])
378 #define atan_optab (optab_table[OTI_atan])
379 #define copysign_optab (optab_table[OTI_copysign])
381 #define isinf_optab (optab_table[OTI_isinf])
383 #define cmp_optab (optab_table[OTI_cmp])
384 #define ucmp_optab (optab_table[OTI_ucmp])
385 #define tst_optab (optab_table[OTI_tst])
387 #define eq_optab (optab_table[OTI_eq])
388 #define ne_optab (optab_table[OTI_ne])
389 #define gt_optab (optab_table[OTI_gt])
390 #define ge_optab (optab_table[OTI_ge])
391 #define lt_optab (optab_table[OTI_lt])
392 #define le_optab (optab_table[OTI_le])
393 #define unord_optab (optab_table[OTI_unord])
395 #define strlen_optab (optab_table[OTI_strlen])
397 #define cbranch_optab (optab_table[OTI_cbranch])
398 #define cmov_optab (optab_table[OTI_cmov])
399 #define cstore_optab (optab_table[OTI_cstore])
400 #define push_optab (optab_table[OTI_push])
401 #define addcc_optab (optab_table[OTI_addcc])
403 #define reduc_smax_optab (optab_table[OTI_reduc_smax])
404 #define reduc_umax_optab (optab_table[OTI_reduc_umax])
405 #define reduc_smin_optab (optab_table[OTI_reduc_smin])
406 #define reduc_umin_optab (optab_table[OTI_reduc_umin])
407 #define reduc_splus_optab (optab_table[OTI_reduc_splus])
408 #define reduc_uplus_optab (optab_table[OTI_reduc_uplus])
410 #define ssum_widen_optab (optab_table[OTI_ssum_widen])
411 #define usum_widen_optab (optab_table[OTI_usum_widen])
412 #define sdot_prod_optab (optab_table[OTI_sdot_prod])
413 #define udot_prod_optab (optab_table[OTI_udot_prod])
415 #define vec_set_optab (optab_table[OTI_vec_set])
416 #define vec_extract_optab (optab_table[OTI_vec_extract])
417 #define vec_extract_even_optab (optab_table[OTI_vec_extract_even])
418 #define vec_extract_odd_optab (optab_table[OTI_vec_extract_odd])
419 #define vec_interleave_high_optab (optab_table[OTI_vec_interleave_high])
420 #define vec_interleave_low_optab (optab_table[OTI_vec_interleave_low])
421 #define vec_init_optab (optab_table[OTI_vec_init])
422 #define vec_shl_optab (optab_table[OTI_vec_shl])
423 #define vec_shr_optab (optab_table[OTI_vec_shr])
424 #define vec_realign_load_optab (optab_table[OTI_vec_realign_load])
425 #define vec_widen_umult_hi_optab (optab_table[OTI_vec_widen_umult_hi])
426 #define vec_widen_umult_lo_optab (optab_table[OTI_vec_widen_umult_lo])
427 #define vec_widen_smult_hi_optab (optab_table[OTI_vec_widen_smult_hi])
428 #define vec_widen_smult_lo_optab (optab_table[OTI_vec_widen_smult_lo])
429 #define vec_unpacks_hi_optab (optab_table[OTI_vec_unpacks_hi])
430 #define vec_unpacks_lo_optab (optab_table[OTI_vec_unpacks_lo])
431 #define vec_unpacku_hi_optab (optab_table[OTI_vec_unpacku_hi])
432 #define vec_unpacku_lo_optab (optab_table[OTI_vec_unpacku_lo])
433 #define vec_pack_trunc_optab (optab_table[OTI_vec_pack_trunc])
434 #define vec_pack_ssat_optab (optab_table[OTI_vec_pack_ssat])
435 #define vec_pack_usat_optab (optab_table[OTI_vec_pack_usat])
437 #define powi_optab (optab_table[OTI_powi])
439 /* Conversion optabs have their own table and indexes. */
440 enum convert_optab_index
463 extern GTY(()) convert_optab convert_optab_table[COI_MAX];
465 #define sext_optab (convert_optab_table[COI_sext])
466 #define zext_optab (convert_optab_table[COI_zext])
467 #define trunc_optab (convert_optab_table[COI_trunc])
468 #define sfix_optab (convert_optab_table[COI_sfix])
469 #define ufix_optab (convert_optab_table[COI_ufix])
470 #define sfixtrunc_optab (convert_optab_table[COI_sfixtrunc])
471 #define ufixtrunc_optab (convert_optab_table[COI_ufixtrunc])
472 #define sfloat_optab (convert_optab_table[COI_sfloat])
473 #define ufloat_optab (convert_optab_table[COI_ufloat])
474 #define lrint_optab (convert_optab_table[COI_lrint])
475 #define lround_optab (convert_optab_table[COI_lround])
476 #define lfloor_optab (convert_optab_table[COI_lfloor])
477 #define lceil_optab (convert_optab_table[COI_lceil])
479 /* These arrays record the insn_code of insns that may be needed to
480 perform input and output reloads of special objects. They provide a
481 place to pass a scratch register. */
482 extern enum insn_code reload_in_optab[NUM_MACHINE_MODES];
483 extern enum insn_code reload_out_optab[NUM_MACHINE_MODES];
485 /* Contains the optab used for each rtx code. */
486 extern GTY(()) optab code_to_optab[NUM_RTX_CODE + 1];
489 typedef rtx (*rtxfun) (rtx);
491 /* Indexed by the rtx-code for a conditional (e.g. EQ, LT,...)
492 gives the gen_function to make a branch to test that condition. */
494 extern rtxfun bcc_gen_fctn[NUM_RTX_CODE];
496 /* Indexed by the rtx-code for a conditional (e.g. EQ, LT,...)
497 gives the insn code to make a store-condition insn
498 to test that condition. */
500 extern enum insn_code setcc_gen_code[NUM_RTX_CODE];
502 #ifdef HAVE_conditional_move
503 /* Indexed by the machine mode, gives the insn code to make a conditional
506 extern enum insn_code movcc_gen_code[NUM_MACHINE_MODES];
509 /* Indexed by the machine mode, gives the insn code for vector conditional
512 extern enum insn_code vcond_gen_code[NUM_MACHINE_MODES];
513 extern enum insn_code vcondu_gen_code[NUM_MACHINE_MODES];
515 /* This array records the insn_code of insns to perform block moves. */
516 extern enum insn_code movmem_optab[NUM_MACHINE_MODES];
518 /* This array records the insn_code of insns to perform block sets. */
519 extern enum insn_code setmem_optab[NUM_MACHINE_MODES];
521 /* These arrays record the insn_code of two different kinds of insns
522 to perform block compares. */
523 extern enum insn_code cmpstr_optab[NUM_MACHINE_MODES];
524 extern enum insn_code cmpstrn_optab[NUM_MACHINE_MODES];
525 extern enum insn_code cmpmem_optab[NUM_MACHINE_MODES];
527 /* Synchronization primitives. This first set is atomic operation for
528 which we don't care about the resulting value. */
529 extern enum insn_code sync_add_optab[NUM_MACHINE_MODES];
530 extern enum insn_code sync_sub_optab[NUM_MACHINE_MODES];
531 extern enum insn_code sync_ior_optab[NUM_MACHINE_MODES];
532 extern enum insn_code sync_and_optab[NUM_MACHINE_MODES];
533 extern enum insn_code sync_xor_optab[NUM_MACHINE_MODES];
534 extern enum insn_code sync_nand_optab[NUM_MACHINE_MODES];
536 /* This second set is atomic operations in which we return the value
537 that existed in memory before the operation. */
538 extern enum insn_code sync_old_add_optab[NUM_MACHINE_MODES];
539 extern enum insn_code sync_old_sub_optab[NUM_MACHINE_MODES];
540 extern enum insn_code sync_old_ior_optab[NUM_MACHINE_MODES];
541 extern enum insn_code sync_old_and_optab[NUM_MACHINE_MODES];
542 extern enum insn_code sync_old_xor_optab[NUM_MACHINE_MODES];
543 extern enum insn_code sync_old_nand_optab[NUM_MACHINE_MODES];
545 /* This third set is atomic operations in which we return the value
546 that resulted after performing the operation. */
547 extern enum insn_code sync_new_add_optab[NUM_MACHINE_MODES];
548 extern enum insn_code sync_new_sub_optab[NUM_MACHINE_MODES];
549 extern enum insn_code sync_new_ior_optab[NUM_MACHINE_MODES];
550 extern enum insn_code sync_new_and_optab[NUM_MACHINE_MODES];
551 extern enum insn_code sync_new_xor_optab[NUM_MACHINE_MODES];
552 extern enum insn_code sync_new_nand_optab[NUM_MACHINE_MODES];
554 /* Atomic compare and swap. */
555 extern enum insn_code sync_compare_and_swap[NUM_MACHINE_MODES];
556 extern enum insn_code sync_compare_and_swap_cc[NUM_MACHINE_MODES];
558 /* Atomic exchange with acquire semantics. */
559 extern enum insn_code sync_lock_test_and_set[NUM_MACHINE_MODES];
561 /* Atomic clear with release semantics. */
562 extern enum insn_code sync_lock_release[NUM_MACHINE_MODES];
564 /* Define functions given in optabs.c. */
566 extern rtx expand_widen_pattern_expr (tree exp, rtx op0, rtx op1, rtx wide_op,
567 rtx target, int unsignedp);
569 extern rtx expand_ternary_op (enum machine_mode mode, optab ternary_optab,
570 rtx op0, rtx op1, rtx op2, rtx target,
573 /* Expand a binary operation given optab and rtx operands. */
574 extern rtx expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
577 extern bool force_expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
580 /* Expand a binary operation with both signed and unsigned forms. */
581 extern rtx sign_expand_binop (enum machine_mode, optab, optab, rtx, rtx,
582 rtx, int, enum optab_methods);
584 /* Generate code to perform an operation on one operand with two results. */
585 extern int expand_twoval_unop (optab, rtx, rtx, rtx, int);
587 /* Generate code to perform an operation on two operands with two results. */
588 extern int expand_twoval_binop (optab, rtx, rtx, rtx, rtx, int);
590 /* Generate code to perform an operation on two operands with two
591 results, using a library function. */
592 extern bool expand_twoval_binop_libfunc (optab, rtx, rtx, rtx, rtx,
595 /* Expand a unary arithmetic operation given optab rtx operand. */
596 extern rtx expand_unop (enum machine_mode, optab, rtx, rtx, int);
598 /* Expand the absolute value operation. */
599 extern rtx expand_abs_nojump (enum machine_mode, rtx, rtx, int);
600 extern rtx expand_abs (enum machine_mode, rtx, rtx, int, int);
602 /* Expand the copysign operation. */
603 extern rtx expand_copysign (rtx, rtx, rtx);
605 /* Generate an instruction with a given INSN_CODE with an output and
607 extern void emit_unop_insn (int, rtx, rtx, enum rtx_code);
609 /* Emit code to perform a series of operations on a multi-word quantity, one
611 extern rtx emit_no_conflict_block (rtx, rtx, rtx, rtx, rtx);
613 /* Emit one rtl insn to compare two rtx's. */
614 extern void emit_cmp_insn (rtx, rtx, enum rtx_code, rtx, enum machine_mode,
617 /* The various uses that a comparison can have; used by can_compare_p:
618 jumps, conditional moves, store flag operations. */
619 enum can_compare_purpose
626 /* Return the optab used for computing the given operation on the type
627 given by the second argument. */
628 extern optab optab_for_tree_code (enum tree_code, tree);
630 /* Nonzero if a compare of mode MODE can be done straightforwardly
631 (without splitting it into pieces). */
632 extern int can_compare_p (enum rtx_code, enum machine_mode,
633 enum can_compare_purpose);
635 /* Return the INSN_CODE to use for an extend operation. */
636 extern enum insn_code can_extend_p (enum machine_mode, enum machine_mode, int);
638 /* Generate the body of an insn to extend Y (with mode MFROM)
639 into X (with mode MTO). Do zero-extension if UNSIGNEDP is nonzero. */
640 extern rtx gen_extend_insn (rtx, rtx, enum machine_mode,
641 enum machine_mode, int);
643 /* Call this to reset the function entry for one optab. */
644 extern void set_optab_libfunc (optab, enum machine_mode, const char *);
645 extern void set_conv_libfunc (convert_optab, enum machine_mode,
646 enum machine_mode, const char *);
648 /* Generate code for a FLOAT_EXPR. */
649 extern void expand_float (rtx, rtx, int);
651 /* Generate code for a FIX_EXPR. */
652 extern void expand_fix (rtx, rtx, int);
654 /* Generate code for float to integral conversion. */
655 extern bool expand_sfix_optab (rtx, rtx, convert_optab);
657 /* Return tree if target supports vector operations for COND_EXPR. */
658 bool expand_vec_cond_expr_p (tree, enum machine_mode);
660 /* Generate code for VEC_COND_EXPR. */
661 extern rtx expand_vec_cond_expr (tree, rtx);
663 /* Generate code for VEC_LSHIFT_EXPR and VEC_RSHIFT_EXPR. */
664 extern rtx expand_vec_shift_expr (tree, rtx);
666 #endif /* GCC_OPTABS_H */