1 /* Definitions for code generation pass of GNU compiler.
2 Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
4 This file is part of GCC.
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)
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.
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. */
24 #include "insn-codes.h"
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.
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.
35 The `lib_call' slot is the name of the library function that
36 can be used to perform the operation.
38 A few optabs, such as move_optab and cmp_optab, are used
41 struct optab_handlers
GTY(())
43 enum insn_code insn_code
;
50 struct optab_handlers handlers
[NUM_MACHINE_MODES
];
52 typedef struct optab
* optab
;
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(())
60 struct optab_handlers handlers
[NUM_MACHINE_MODES
][NUM_MACHINE_MODES
];
62 typedef struct convert_optab
*convert_optab
;
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)
68 /* Enumeration of valid indexes into optab_table. */
76 /* Signed and fp multiply */
79 /* Signed multiply, return high word */
82 /* Signed multiply with result one machine mode wider than args */
85 /* Widening multiply of one unsigned and one signed operand. */
91 /* Signed divide-and-remainder in one */
95 /* Signed remainder */
98 /* Floating point remainder functions */
101 /* Convert float to integer in float fmt */
111 /* Arithmetic shift left */
113 /* Logical shift right */
115 /* Arithmetic shift right */
121 /* Signed and floating-point minimum value */
123 /* Signed and floating-point maximum value */
125 /* Unsigned minimum value */
127 /* Unsigned maximum value */
131 /* Arc tangent of y/x */
134 /* Move instruction. */
136 /* Move, preserving high part of register. */
138 /* Move, with a misaligned memory. */
141 /* Unary operations */
150 /* Bit scanning and counting */
170 /* Base-10 Exponential */
172 /* Base-2 Exponential */
176 /* Load exponent of a floating point number */
178 /* Radix-independent exponent */
181 /* Natural Logarithm */
183 /* Base-10 Logarithm */
185 /* Base-2 Logarithm */
187 /* logarithm of 1 plus argument */
189 /* Rounding functions */
201 /* Inverse tangent */
206 /* Compare insn; two operands. */
208 /* Used only for libcalls for unsigned comparisons. */
210 /* tst insn; compare one operand against 0 */
213 /* Floating point comparison optabs - used primarily for libfuncs */
225 /* Combined compare & jump/store flags/move operations. */
230 /* Push instruction. */
233 /* Conditional add instruction. */
236 /* Summation, with result machine mode one or more wider than args. */
240 /* Reduction operations on a vector operand. */
248 /* Dot product, with result machine mode one or more wider than args. */
252 /* Sum-of-Absolute-Differences. */
255 /* Set specified field of vector operand. */
257 /* Extract specified field of vector operand. */
259 /* Extract even/odd fields of vector operands. */
260 OTI_vec_extract_even
,
262 /* Interleave fields of vector operands. */
263 OTI_vec_interleave_high
,
264 OTI_vec_interleave_low
,
265 /* Initialize vector operand. */
267 /* Whole vector shift. The shift amount is in bits. */
270 /* Extract specified elements from vectors, for vector load. */
271 OTI_vec_realign_load
,
272 /* Widening multiplication.
273 The high/low part of the resulting vector of products is returned. */
274 OTI_vec_widen_umult_hi
,
275 OTI_vec_widen_umult_lo
,
276 OTI_vec_widen_smult_hi
,
277 OTI_vec_widen_smult_lo
,
278 /* Extract and widen the high/low part of a vector of signed/unsigned elements. */
283 /* Narrow (demote) and merge the elements of two vectors. */
288 /* Saturated arithmetic. */
292 /* Perform a raise to the power of integer. */
298 extern GTY(()) optab optab_table
[OTI_MAX
];
300 #define add_optab (optab_table[OTI_add])
301 #define sub_optab (optab_table[OTI_sub])
302 #define smul_optab (optab_table[OTI_smul])
303 #define addv_optab (optab_table[OTI_addv])
304 #define subv_optab (optab_table[OTI_subv])
305 #define smul_highpart_optab (optab_table[OTI_smul_highpart])
306 #define umul_highpart_optab (optab_table[OTI_umul_highpart])
307 #define smul_widen_optab (optab_table[OTI_smul_widen])
308 #define umul_widen_optab (optab_table[OTI_umul_widen])
309 #define usmul_widen_optab (optab_table[OTI_usmul_widen])
310 #define sdiv_optab (optab_table[OTI_sdiv])
311 #define smulv_optab (optab_table[OTI_smulv])
312 #define sdivv_optab (optab_table[OTI_sdivv])
313 #define sdivmod_optab (optab_table[OTI_sdivmod])
314 #define udiv_optab (optab_table[OTI_udiv])
315 #define udivmod_optab (optab_table[OTI_udivmod])
316 #define smod_optab (optab_table[OTI_smod])
317 #define umod_optab (optab_table[OTI_umod])
318 #define fmod_optab (optab_table[OTI_fmod])
319 #define drem_optab (optab_table[OTI_drem])
320 #define ftrunc_optab (optab_table[OTI_ftrunc])
321 #define and_optab (optab_table[OTI_and])
322 #define ior_optab (optab_table[OTI_ior])
323 #define xor_optab (optab_table[OTI_xor])
324 #define ashl_optab (optab_table[OTI_ashl])
325 #define lshr_optab (optab_table[OTI_lshr])
326 #define ashr_optab (optab_table[OTI_ashr])
327 #define rotl_optab (optab_table[OTI_rotl])
328 #define rotr_optab (optab_table[OTI_rotr])
329 #define smin_optab (optab_table[OTI_smin])
330 #define smax_optab (optab_table[OTI_smax])
331 #define umin_optab (optab_table[OTI_umin])
332 #define umax_optab (optab_table[OTI_umax])
333 #define pow_optab (optab_table[OTI_pow])
334 #define atan2_optab (optab_table[OTI_atan2])
336 #define mov_optab (optab_table[OTI_mov])
337 #define movstrict_optab (optab_table[OTI_movstrict])
338 #define movmisalign_optab (optab_table[OTI_movmisalign])
340 #define neg_optab (optab_table[OTI_neg])
341 #define negv_optab (optab_table[OTI_negv])
342 #define abs_optab (optab_table[OTI_abs])
343 #define absv_optab (optab_table[OTI_absv])
344 #define one_cmpl_optab (optab_table[OTI_one_cmpl])
345 #define ffs_optab (optab_table[OTI_ffs])
346 #define clz_optab (optab_table[OTI_clz])
347 #define ctz_optab (optab_table[OTI_ctz])
348 #define popcount_optab (optab_table[OTI_popcount])
349 #define parity_optab (optab_table[OTI_parity])
350 #define sqrt_optab (optab_table[OTI_sqrt])
351 #define sincos_optab (optab_table[OTI_sincos])
352 #define sin_optab (optab_table[OTI_sin])
353 #define asin_optab (optab_table[OTI_asin])
354 #define cos_optab (optab_table[OTI_cos])
355 #define acos_optab (optab_table[OTI_acos])
356 #define exp_optab (optab_table[OTI_exp])
357 #define exp10_optab (optab_table[OTI_exp10])
358 #define exp2_optab (optab_table[OTI_exp2])
359 #define expm1_optab (optab_table[OTI_expm1])
360 #define ldexp_optab (optab_table[OTI_ldexp])
361 #define logb_optab (optab_table[OTI_logb])
362 #define ilogb_optab (optab_table[OTI_ilogb])
363 #define log_optab (optab_table[OTI_log])
364 #define log10_optab (optab_table[OTI_log10])
365 #define log2_optab (optab_table[OTI_log2])
366 #define log1p_optab (optab_table[OTI_log1p])
367 #define floor_optab (optab_table[OTI_floor])
368 #define lfloor_optab (optab_table[OTI_lfloor])
369 #define ceil_optab (optab_table[OTI_ceil])
370 #define lceil_optab (optab_table[OTI_lceil])
371 #define btrunc_optab (optab_table[OTI_btrunc])
372 #define round_optab (optab_table[OTI_round])
373 #define nearbyint_optab (optab_table[OTI_nearbyint])
374 #define rint_optab (optab_table[OTI_rint])
375 #define lrint_optab (optab_table[OTI_lrint])
376 #define tan_optab (optab_table[OTI_tan])
377 #define atan_optab (optab_table[OTI_atan])
378 #define copysign_optab (optab_table[OTI_copysign])
380 #define cmp_optab (optab_table[OTI_cmp])
381 #define ucmp_optab (optab_table[OTI_ucmp])
382 #define tst_optab (optab_table[OTI_tst])
384 #define eq_optab (optab_table[OTI_eq])
385 #define ne_optab (optab_table[OTI_ne])
386 #define gt_optab (optab_table[OTI_gt])
387 #define ge_optab (optab_table[OTI_ge])
388 #define lt_optab (optab_table[OTI_lt])
389 #define le_optab (optab_table[OTI_le])
390 #define unord_optab (optab_table[OTI_unord])
392 #define strlen_optab (optab_table[OTI_strlen])
394 #define cbranch_optab (optab_table[OTI_cbranch])
395 #define cmov_optab (optab_table[OTI_cmov])
396 #define cstore_optab (optab_table[OTI_cstore])
397 #define push_optab (optab_table[OTI_push])
398 #define addcc_optab (optab_table[OTI_addcc])
400 #define ssum_widen_optab (optab_table[OTI_ssum_widen])
401 #define usum_widen_optab (optab_table[OTI_usum_widen])
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])
409 #define sdot_prod_optab (optab_table[OTI_sdot_prod])
410 #define udot_prod_optab (optab_table[OTI_udot_prod])
411 #define sad_optab (optab_table[OTI_sad])
413 #define vec_set_optab (optab_table[OTI_vec_set])
414 #define vec_extract_optab (optab_table[OTI_vec_extract])
415 #define vec_extract_even_optab (optab_table[OTI_vec_extract_even])
416 #define vec_extract_odd_optab (optab_table[OTI_vec_extract_odd])
417 #define vec_interleave_high_optab (optab_table[OTI_vec_interleave_high])
418 #define vec_interleave_low_optab (optab_table[OTI_vec_interleave_low])
419 #define vec_init_optab (optab_table[OTI_vec_init])
420 #define vec_shl_optab (optab_table[OTI_vec_shl])
421 #define vec_shr_optab (optab_table[OTI_vec_shr])
422 #define vec_realign_load_optab (optab_table[OTI_vec_realign_load])
423 #define vec_widen_umult_hi_optab (optab_table[OTI_vec_widen_umult_hi])
424 #define vec_widen_umult_lo_optab (optab_table[OTI_vec_widen_umult_lo])
425 #define vec_widen_smult_hi_optab (optab_table[OTI_vec_widen_smult_hi])
426 #define vec_widen_smult_lo_optab (optab_table[OTI_vec_widen_smult_lo])
427 #define vec_unpacks_hi_optab (optab_table[OTI_vec_unpacks_hi])
428 #define vec_unpacku_hi_optab (optab_table[OTI_vec_unpacku_hi])
429 #define vec_unpacks_lo_optab (optab_table[OTI_vec_unpacks_lo])
430 #define vec_unpacku_lo_optab (optab_table[OTI_vec_unpacku_lo])
431 #define vec_pack_mod_optab (optab_table[OTI_vec_pack_mod])
432 #define vec_pack_ssat_optab (optab_table[OTI_vec_pack_ssat])
433 #define vec_pack_usat_optab (optab_table[OTI_vec_pack_usat])
435 #define ssat_sub_optab (optab_table[OTI_ssat_sub])
436 #define usat_sub_optab (optab_table[OTI_usat_sub])
438 #define powi_optab (optab_table[OTI_powi])
440 /* Conversion optabs have their own table and indexes. */
441 enum convert_optab_index
459 extern GTY(()) convert_optab convert_optab_table
[COI_MAX
];
461 #define sext_optab (convert_optab_table[COI_sext])
462 #define zext_optab (convert_optab_table[COI_zext])
463 #define trunc_optab (convert_optab_table[COI_trunc])
464 #define sfix_optab (convert_optab_table[COI_sfix])
465 #define ufix_optab (convert_optab_table[COI_ufix])
466 #define sfixtrunc_optab (convert_optab_table[COI_sfixtrunc])
467 #define ufixtrunc_optab (convert_optab_table[COI_ufixtrunc])
468 #define sfloat_optab (convert_optab_table[COI_sfloat])
469 #define ufloat_optab (convert_optab_table[COI_ufloat])
471 /* These arrays record the insn_code of insns that may be needed to
472 perform input and output reloads of special objects. They provide a
473 place to pass a scratch register. */
474 extern enum insn_code reload_in_optab
[NUM_MACHINE_MODES
];
475 extern enum insn_code reload_out_optab
[NUM_MACHINE_MODES
];
477 /* Contains the optab used for each rtx code. */
478 extern GTY(()) optab code_to_optab
[NUM_RTX_CODE
+ 1];
481 typedef rtx (*rtxfun
) (rtx
);
483 /* Indexed by the rtx-code for a conditional (e.g. EQ, LT,...)
484 gives the gen_function to make a branch to test that condition. */
486 extern rtxfun bcc_gen_fctn
[NUM_RTX_CODE
];
488 /* Indexed by the rtx-code for a conditional (e.g. EQ, LT,...)
489 gives the insn code to make a store-condition insn
490 to test that condition. */
492 extern enum insn_code setcc_gen_code
[NUM_RTX_CODE
];
494 #ifdef HAVE_conditional_move
495 /* Indexed by the machine mode, gives the insn code to make a conditional
498 extern enum insn_code movcc_gen_code
[NUM_MACHINE_MODES
];
501 /* Indexed by the machine mode, gives the insn code for vector conditional
504 extern enum insn_code vcond_gen_code
[NUM_MACHINE_MODES
];
505 extern enum insn_code vcondu_gen_code
[NUM_MACHINE_MODES
];
507 /* This array records the insn_code of insns to perform block moves. */
508 extern enum insn_code movmem_optab
[NUM_MACHINE_MODES
];
510 /* This array records the insn_code of insns to perform block sets. */
511 extern enum insn_code setmem_optab
[NUM_MACHINE_MODES
];
513 /* These arrays record the insn_code of two different kinds of insns
514 to perform block compares. */
515 extern enum insn_code cmpstr_optab
[NUM_MACHINE_MODES
];
516 extern enum insn_code cmpstrn_optab
[NUM_MACHINE_MODES
];
517 extern enum insn_code cmpmem_optab
[NUM_MACHINE_MODES
];
519 /* Synchronization primitives. This first set is atomic operation for
520 which we don't care about the resulting value. */
521 extern enum insn_code sync_add_optab
[NUM_MACHINE_MODES
];
522 extern enum insn_code sync_sub_optab
[NUM_MACHINE_MODES
];
523 extern enum insn_code sync_ior_optab
[NUM_MACHINE_MODES
];
524 extern enum insn_code sync_and_optab
[NUM_MACHINE_MODES
];
525 extern enum insn_code sync_xor_optab
[NUM_MACHINE_MODES
];
526 extern enum insn_code sync_nand_optab
[NUM_MACHINE_MODES
];
528 /* This second set is atomic operations in which we return the value
529 that existed in memory before the operation. */
530 extern enum insn_code sync_old_add_optab
[NUM_MACHINE_MODES
];
531 extern enum insn_code sync_old_sub_optab
[NUM_MACHINE_MODES
];
532 extern enum insn_code sync_old_ior_optab
[NUM_MACHINE_MODES
];
533 extern enum insn_code sync_old_and_optab
[NUM_MACHINE_MODES
];
534 extern enum insn_code sync_old_xor_optab
[NUM_MACHINE_MODES
];
535 extern enum insn_code sync_old_nand_optab
[NUM_MACHINE_MODES
];
537 /* This third set is atomic operations in which we return the value
538 that resulted after performing the operation. */
539 extern enum insn_code sync_new_add_optab
[NUM_MACHINE_MODES
];
540 extern enum insn_code sync_new_sub_optab
[NUM_MACHINE_MODES
];
541 extern enum insn_code sync_new_ior_optab
[NUM_MACHINE_MODES
];
542 extern enum insn_code sync_new_and_optab
[NUM_MACHINE_MODES
];
543 extern enum insn_code sync_new_xor_optab
[NUM_MACHINE_MODES
];
544 extern enum insn_code sync_new_nand_optab
[NUM_MACHINE_MODES
];
546 /* Atomic compare and swap. */
547 extern enum insn_code sync_compare_and_swap
[NUM_MACHINE_MODES
];
548 extern enum insn_code sync_compare_and_swap_cc
[NUM_MACHINE_MODES
];
550 /* Atomic exchange with acquire semantics. */
551 extern enum insn_code sync_lock_test_and_set
[NUM_MACHINE_MODES
];
553 /* Atomic clear with release semantics. */
554 extern enum insn_code sync_lock_release
[NUM_MACHINE_MODES
];
556 /* Define functions given in optabs.c. */
558 extern rtx
expand_widen_pattern_expr (tree exp
, rtx op0
, rtx op1
, rtx wide_op
,
559 rtx target
, int unsignedp
);
561 extern rtx
expand_ternary_op (enum machine_mode mode
, optab ternary_optab
,
562 rtx op0
, rtx op1
, rtx op2
, rtx target
,
565 /* Expand a binary operation given optab and rtx operands. */
566 extern rtx
expand_binop (enum machine_mode
, optab
, rtx
, rtx
, rtx
, int,
569 extern bool force_expand_binop (enum machine_mode
, optab
, rtx
, rtx
, rtx
, int,
572 /* Expand a binary operation with both signed and unsigned forms. */
573 extern rtx
sign_expand_binop (enum machine_mode
, optab
, optab
, rtx
, rtx
,
574 rtx
, int, enum optab_methods
);
576 /* Generate code to perform an operation on one operand with two results. */
577 extern int expand_twoval_unop (optab
, rtx
, rtx
, rtx
, int);
579 /* Generate code to perform an operation on two operands with two results. */
580 extern int expand_twoval_binop (optab
, rtx
, rtx
, rtx
, rtx
, int);
582 /* Generate code to perform an operation on two operands with two
583 results, using a library function. */
584 extern bool expand_twoval_binop_libfunc (optab
, rtx
, rtx
, rtx
, rtx
,
587 /* Expand a unary arithmetic operation given optab rtx operand. */
588 extern rtx
expand_unop (enum machine_mode
, optab
, rtx
, rtx
, int);
590 /* Expand the absolute value operation. */
591 extern rtx
expand_abs_nojump (enum machine_mode
, rtx
, rtx
, int);
592 extern rtx
expand_abs (enum machine_mode
, rtx
, rtx
, int, int);
594 /* Expand the copysign operation. */
595 extern rtx
expand_copysign (rtx
, rtx
, rtx
);
597 /* Generate an instruction with a given INSN_CODE with an output and
599 extern void emit_unop_insn (int, rtx
, rtx
, enum rtx_code
);
601 /* Emit code to perform a series of operations on a multi-word quantity, one
603 extern rtx
emit_no_conflict_block (rtx
, rtx
, rtx
, rtx
, rtx
);
605 /* Emit one rtl insn to compare two rtx's. */
606 extern void emit_cmp_insn (rtx
, rtx
, enum rtx_code
, rtx
, enum machine_mode
,
609 /* The various uses that a comparison can have; used by can_compare_p:
610 jumps, conditional moves, store flag operations. */
611 enum can_compare_purpose
618 /* Return the optab used for computing the given operation on the type
619 given by the second argument. */
620 extern optab
optab_for_tree_code (enum tree_code
, tree
);
622 /* Nonzero if a compare of mode MODE can be done straightforwardly
623 (without splitting it into pieces). */
624 extern int can_compare_p (enum rtx_code
, enum machine_mode
,
625 enum can_compare_purpose
);
627 /* Return the INSN_CODE to use for an extend operation. */
628 extern enum insn_code
can_extend_p (enum machine_mode
, enum machine_mode
, int);
630 /* Generate the body of an insn to extend Y (with mode MFROM)
631 into X (with mode MTO). Do zero-extension if UNSIGNEDP is nonzero. */
632 extern rtx
gen_extend_insn (rtx
, rtx
, enum machine_mode
,
633 enum machine_mode
, int);
635 /* Call this to reset the function entry for one optab. */
636 extern void set_optab_libfunc (optab
, enum machine_mode
, const char *);
637 extern void set_conv_libfunc (convert_optab
, enum machine_mode
,
638 enum machine_mode
, const char *);
640 /* Generate code for a FLOAT_EXPR. */
641 extern void expand_float (rtx
, rtx
, int);
643 /* Generate code for a FIX_EXPR. */
644 extern void expand_fix (rtx
, rtx
, int);
646 /* Return tree if target supports vector operations for COND_EXPR. */
647 bool expand_vec_cond_expr_p (tree
, enum machine_mode
);
649 /* Generate code for VEC_COND_EXPR. */
650 extern rtx
expand_vec_cond_expr (tree
, rtx
);
652 /* Generate code for VEC_LSHIFT_EXPR and VEC_RSHIFT_EXPR. */
653 extern rtx
expand_vec_shift_expr (tree
, rtx
);
655 #endif /* GCC_OPTABS_H */