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.
30 For example, add_optab applies to addition.
32 The insn_code slot is the enum insn_code that says how to
33 generate an insn for this operation on a particular machine mode.
34 It is CODE_FOR_nothing if there is no such insn on the target machine.
36 The `lib_call' slot is the name of the library function that
37 can be used to perform the operation.
39 A few optabs, such as move_optab and cmp_optab, are used
42 struct optab_handlers
GTY(())
44 enum insn_code insn_code
;
51 struct optab_handlers handlers
[NUM_MACHINE_MODES
];
53 typedef struct optab
* optab
;
55 /* A convert_optab is for some sort of conversion operation between
56 modes. The first array index is the destination mode, the second
57 is the source mode. */
58 struct convert_optab
GTY(())
61 struct optab_handlers handlers
[NUM_MACHINE_MODES
][NUM_MACHINE_MODES
];
63 typedef struct convert_optab
*convert_optab
;
65 /* Given an enum insn_code, access the function to construct
66 the body of that kind of insn. */
67 #define GEN_FCN(CODE) (insn_data[CODE].genfun)
69 /* Enumeration of valid indexes into optab_table. */
77 /* Signed and fp multiply */
80 /* Signed multiply, return high word */
83 /* Signed multiply with result one machine mode wider than args */
86 /* Widening multiply of one unsigned and one signed operand. */
92 /* Signed divide-and-remainder in one */
96 /* Signed remainder */
99 /* Floating point remainder functions */
102 /* Convert float to integer in float fmt */
112 /* Arithmetic shift left */
114 /* Logical shift right */
116 /* Arithmetic shift right */
122 /* Signed and floating-point minimum value */
124 /* Signed and floating-point maximum value */
126 /* Unsigned minimum value */
128 /* Unsigned maximum value */
132 /* Arc tangent of y/x */
135 /* Move instruction. */
137 /* Move, preserving high part of register. */
139 /* Move, with a misaligned memory. */
142 /* Unary operations */
153 /* Bit scanning and counting */
173 /* Base-10 Exponential */
175 /* Base-2 Exponential */
179 /* Load exponent of a floating point number */
181 /* Radix-independent exponent */
184 /* Natural Logarithm */
186 /* Base-10 Logarithm */
188 /* Base-2 Logarithm */
190 /* logarithm of 1 plus argument */
192 /* 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 /* Reduction operations on a vector operand. */
244 /* Summation, with result machine mode one or more wider than args. */
248 /* Dot product, with result machine mode one or more wider than args. */
252 /* Set specified field of vector operand. */
254 /* Extract specified field of vector operand. */
256 /* Initialize vector operand. */
258 /* Whole vector shift. The shift amount is in bits. */
261 /* Extract specified elements from vectors, for vector load. */
262 OTI_vec_realign_load
,
263 /* Widening multiplication.
264 The high/low part of the resulting vector of products is returned. */
265 OTI_vec_widen_umult_hi
,
266 OTI_vec_widen_umult_lo
,
267 OTI_vec_widen_smult_hi
,
268 OTI_vec_widen_smult_lo
,
269 /* Extract and widen the high/low part of a vector of signed/unsigned
275 /* Narrow (demote) and merge the elements of two vectors. */
280 /* Perform a raise to the power of integer. */
286 extern GTY(()) optab optab_table
[OTI_MAX
];
288 #define add_optab (optab_table[OTI_add])
289 #define sub_optab (optab_table[OTI_sub])
290 #define smul_optab (optab_table[OTI_smul])
291 #define addv_optab (optab_table[OTI_addv])
292 #define subv_optab (optab_table[OTI_subv])
293 #define smul_highpart_optab (optab_table[OTI_smul_highpart])
294 #define umul_highpart_optab (optab_table[OTI_umul_highpart])
295 #define smul_widen_optab (optab_table[OTI_smul_widen])
296 #define umul_widen_optab (optab_table[OTI_umul_widen])
297 #define usmul_widen_optab (optab_table[OTI_usmul_widen])
298 #define sdiv_optab (optab_table[OTI_sdiv])
299 #define smulv_optab (optab_table[OTI_smulv])
300 #define sdivv_optab (optab_table[OTI_sdivv])
301 #define sdivmod_optab (optab_table[OTI_sdivmod])
302 #define udiv_optab (optab_table[OTI_udiv])
303 #define udivmod_optab (optab_table[OTI_udivmod])
304 #define smod_optab (optab_table[OTI_smod])
305 #define umod_optab (optab_table[OTI_umod])
306 #define fmod_optab (optab_table[OTI_fmod])
307 #define remainder_optab (optab_table[OTI_remainder])
308 #define ftrunc_optab (optab_table[OTI_ftrunc])
309 #define and_optab (optab_table[OTI_and])
310 #define ior_optab (optab_table[OTI_ior])
311 #define xor_optab (optab_table[OTI_xor])
312 #define ashl_optab (optab_table[OTI_ashl])
313 #define lshr_optab (optab_table[OTI_lshr])
314 #define ashr_optab (optab_table[OTI_ashr])
315 #define rotl_optab (optab_table[OTI_rotl])
316 #define rotr_optab (optab_table[OTI_rotr])
317 #define smin_optab (optab_table[OTI_smin])
318 #define smax_optab (optab_table[OTI_smax])
319 #define umin_optab (optab_table[OTI_umin])
320 #define umax_optab (optab_table[OTI_umax])
321 #define pow_optab (optab_table[OTI_pow])
322 #define atan2_optab (optab_table[OTI_atan2])
324 #define mov_optab (optab_table[OTI_mov])
325 #define movstrict_optab (optab_table[OTI_movstrict])
326 #define movmisalign_optab (optab_table[OTI_movmisalign])
328 #define neg_optab (optab_table[OTI_neg])
329 #define negv_optab (optab_table[OTI_negv])
330 #define abs_optab (optab_table[OTI_abs])
331 #define absv_optab (optab_table[OTI_absv])
332 #define one_cmpl_optab (optab_table[OTI_one_cmpl])
333 #define bswap_optab (optab_table[OTI_bswap])
334 #define ffs_optab (optab_table[OTI_ffs])
335 #define clz_optab (optab_table[OTI_clz])
336 #define ctz_optab (optab_table[OTI_ctz])
337 #define popcount_optab (optab_table[OTI_popcount])
338 #define parity_optab (optab_table[OTI_parity])
339 #define sqrt_optab (optab_table[OTI_sqrt])
340 #define sincos_optab (optab_table[OTI_sincos])
341 #define sin_optab (optab_table[OTI_sin])
342 #define asin_optab (optab_table[OTI_asin])
343 #define cos_optab (optab_table[OTI_cos])
344 #define acos_optab (optab_table[OTI_acos])
345 #define exp_optab (optab_table[OTI_exp])
346 #define exp10_optab (optab_table[OTI_exp10])
347 #define exp2_optab (optab_table[OTI_exp2])
348 #define expm1_optab (optab_table[OTI_expm1])
349 #define ldexp_optab (optab_table[OTI_ldexp])
350 #define logb_optab (optab_table[OTI_logb])
351 #define ilogb_optab (optab_table[OTI_ilogb])
352 #define log_optab (optab_table[OTI_log])
353 #define log10_optab (optab_table[OTI_log10])
354 #define log2_optab (optab_table[OTI_log2])
355 #define log1p_optab (optab_table[OTI_log1p])
356 #define floor_optab (optab_table[OTI_floor])
357 #define ceil_optab (optab_table[OTI_ceil])
358 #define btrunc_optab (optab_table[OTI_btrunc])
359 #define round_optab (optab_table[OTI_round])
360 #define nearbyint_optab (optab_table[OTI_nearbyint])
361 #define rint_optab (optab_table[OTI_rint])
362 #define tan_optab (optab_table[OTI_tan])
363 #define atan_optab (optab_table[OTI_atan])
364 #define copysign_optab (optab_table[OTI_copysign])
366 #define cmp_optab (optab_table[OTI_cmp])
367 #define ucmp_optab (optab_table[OTI_ucmp])
368 #define tst_optab (optab_table[OTI_tst])
370 #define eq_optab (optab_table[OTI_eq])
371 #define ne_optab (optab_table[OTI_ne])
372 #define gt_optab (optab_table[OTI_gt])
373 #define ge_optab (optab_table[OTI_ge])
374 #define lt_optab (optab_table[OTI_lt])
375 #define le_optab (optab_table[OTI_le])
376 #define unord_optab (optab_table[OTI_unord])
378 #define strlen_optab (optab_table[OTI_strlen])
380 #define cbranch_optab (optab_table[OTI_cbranch])
381 #define cmov_optab (optab_table[OTI_cmov])
382 #define cstore_optab (optab_table[OTI_cstore])
383 #define push_optab (optab_table[OTI_push])
384 #define addcc_optab (optab_table[OTI_addcc])
386 #define reduc_smax_optab (optab_table[OTI_reduc_smax])
387 #define reduc_umax_optab (optab_table[OTI_reduc_umax])
388 #define reduc_smin_optab (optab_table[OTI_reduc_smin])
389 #define reduc_umin_optab (optab_table[OTI_reduc_umin])
390 #define reduc_splus_optab (optab_table[OTI_reduc_splus])
391 #define reduc_uplus_optab (optab_table[OTI_reduc_uplus])
393 #define ssum_widen_optab (optab_table[OTI_ssum_widen])
394 #define usum_widen_optab (optab_table[OTI_usum_widen])
395 #define sdot_prod_optab (optab_table[OTI_sdot_prod])
396 #define udot_prod_optab (optab_table[OTI_udot_prod])
398 #define vec_set_optab (optab_table[OTI_vec_set])
399 #define vec_extract_optab (optab_table[OTI_vec_extract])
400 #define vec_init_optab (optab_table[OTI_vec_init])
401 #define vec_shl_optab (optab_table[OTI_vec_shl])
402 #define vec_shr_optab (optab_table[OTI_vec_shr])
403 #define vec_realign_load_optab (optab_table[OTI_vec_realign_load])
404 #define vec_widen_umult_hi_optab (optab_table[OTI_vec_widen_umult_hi])
405 #define vec_widen_umult_lo_optab (optab_table[OTI_vec_widen_umult_lo])
406 #define vec_widen_smult_hi_optab (optab_table[OTI_vec_widen_smult_hi])
407 #define vec_widen_smult_lo_optab (optab_table[OTI_vec_widen_smult_lo])
408 #define vec_unpacks_hi_optab (optab_table[OTI_vec_unpacks_hi])
409 #define vec_unpacku_hi_optab (optab_table[OTI_vec_unpacku_hi])
410 #define vec_unpacks_lo_optab (optab_table[OTI_vec_unpacks_lo])
411 #define vec_unpacku_lo_optab (optab_table[OTI_vec_unpacku_lo])
412 #define vec_pack_mod_optab (optab_table[OTI_vec_pack_mod])
413 #define vec_pack_ssat_optab (optab_table[OTI_vec_pack_ssat])
414 #define vec_pack_usat_optab (optab_table[OTI_vec_pack_usat])
416 #define powi_optab (optab_table[OTI_powi])
418 /* Conversion optabs have their own table and indexes. */
419 enum convert_optab_index
442 extern GTY(()) convert_optab convert_optab_table
[COI_MAX
];
444 #define sext_optab (convert_optab_table[COI_sext])
445 #define zext_optab (convert_optab_table[COI_zext])
446 #define trunc_optab (convert_optab_table[COI_trunc])
447 #define sfix_optab (convert_optab_table[COI_sfix])
448 #define ufix_optab (convert_optab_table[COI_ufix])
449 #define sfixtrunc_optab (convert_optab_table[COI_sfixtrunc])
450 #define ufixtrunc_optab (convert_optab_table[COI_ufixtrunc])
451 #define sfloat_optab (convert_optab_table[COI_sfloat])
452 #define ufloat_optab (convert_optab_table[COI_ufloat])
453 #define lrint_optab (convert_optab_table[COI_lrint])
454 #define lround_optab (convert_optab_table[COI_lround])
455 #define lfloor_optab (convert_optab_table[COI_lfloor])
456 #define lceil_optab (convert_optab_table[COI_lceil])
458 /* These arrays record the insn_code of insns that may be needed to
459 perform input and output reloads of special objects. They provide a
460 place to pass a scratch register. */
461 extern enum insn_code reload_in_optab
[NUM_MACHINE_MODES
];
462 extern enum insn_code reload_out_optab
[NUM_MACHINE_MODES
];
464 /* Contains the optab used for each rtx code. */
465 extern GTY(()) optab code_to_optab
[NUM_RTX_CODE
+ 1];
468 typedef rtx (*rtxfun
) (rtx
);
470 /* Indexed by the rtx-code for a conditional (e.g. EQ, LT,...)
471 gives the gen_function to make a branch to test that condition. */
473 extern rtxfun bcc_gen_fctn
[NUM_RTX_CODE
];
475 /* Indexed by the rtx-code for a conditional (e.g. EQ, LT,...)
476 gives the insn code to make a store-condition insn
477 to test that condition. */
479 extern enum insn_code setcc_gen_code
[NUM_RTX_CODE
];
481 #ifdef HAVE_conditional_move
482 /* Indexed by the machine mode, gives the insn code to make a conditional
485 extern enum insn_code movcc_gen_code
[NUM_MACHINE_MODES
];
488 /* Indexed by the machine mode, gives the insn code for vector conditional
491 extern enum insn_code vcond_gen_code
[NUM_MACHINE_MODES
];
492 extern enum insn_code vcondu_gen_code
[NUM_MACHINE_MODES
];
494 /* This array records the insn_code of insns to perform block moves. */
495 extern enum insn_code movmem_optab
[NUM_MACHINE_MODES
];
497 /* This array records the insn_code of insns to perform block sets. */
498 extern enum insn_code setmem_optab
[NUM_MACHINE_MODES
];
500 /* These arrays record the insn_code of two different kinds of insns
501 to perform block compares. */
502 extern enum insn_code cmpstr_optab
[NUM_MACHINE_MODES
];
503 extern enum insn_code cmpstrn_optab
[NUM_MACHINE_MODES
];
504 extern enum insn_code cmpmem_optab
[NUM_MACHINE_MODES
];
506 /* Synchronization primitives. This first set is atomic operation for
507 which we don't care about the resulting value. */
508 extern enum insn_code sync_add_optab
[NUM_MACHINE_MODES
];
509 extern enum insn_code sync_sub_optab
[NUM_MACHINE_MODES
];
510 extern enum insn_code sync_ior_optab
[NUM_MACHINE_MODES
];
511 extern enum insn_code sync_and_optab
[NUM_MACHINE_MODES
];
512 extern enum insn_code sync_xor_optab
[NUM_MACHINE_MODES
];
513 extern enum insn_code sync_nand_optab
[NUM_MACHINE_MODES
];
515 /* This second set is atomic operations in which we return the value
516 that existed in memory before the operation. */
517 extern enum insn_code sync_old_add_optab
[NUM_MACHINE_MODES
];
518 extern enum insn_code sync_old_sub_optab
[NUM_MACHINE_MODES
];
519 extern enum insn_code sync_old_ior_optab
[NUM_MACHINE_MODES
];
520 extern enum insn_code sync_old_and_optab
[NUM_MACHINE_MODES
];
521 extern enum insn_code sync_old_xor_optab
[NUM_MACHINE_MODES
];
522 extern enum insn_code sync_old_nand_optab
[NUM_MACHINE_MODES
];
524 /* This third set is atomic operations in which we return the value
525 that resulted after performing the operation. */
526 extern enum insn_code sync_new_add_optab
[NUM_MACHINE_MODES
];
527 extern enum insn_code sync_new_sub_optab
[NUM_MACHINE_MODES
];
528 extern enum insn_code sync_new_ior_optab
[NUM_MACHINE_MODES
];
529 extern enum insn_code sync_new_and_optab
[NUM_MACHINE_MODES
];
530 extern enum insn_code sync_new_xor_optab
[NUM_MACHINE_MODES
];
531 extern enum insn_code sync_new_nand_optab
[NUM_MACHINE_MODES
];
533 /* Atomic compare and swap. */
534 extern enum insn_code sync_compare_and_swap
[NUM_MACHINE_MODES
];
535 extern enum insn_code sync_compare_and_swap_cc
[NUM_MACHINE_MODES
];
537 /* Atomic exchange with acquire semantics. */
538 extern enum insn_code sync_lock_test_and_set
[NUM_MACHINE_MODES
];
540 /* Atomic clear with release semantics. */
541 extern enum insn_code sync_lock_release
[NUM_MACHINE_MODES
];
543 /* Define functions given in optabs.c. */
545 extern rtx
expand_widen_pattern_expr (tree exp
, rtx op0
, rtx op1
, rtx wide_op
,
546 rtx target
, int unsignedp
);
548 extern rtx
expand_ternary_op (enum machine_mode mode
, optab ternary_optab
,
549 rtx op0
, rtx op1
, rtx op2
, rtx target
,
552 /* Expand a binary operation given optab and rtx operands. */
553 extern rtx
expand_binop (enum machine_mode
, optab
, rtx
, rtx
, rtx
, int,
556 extern bool force_expand_binop (enum machine_mode
, optab
, rtx
, rtx
, rtx
, int,
559 /* Expand a binary operation with both signed and unsigned forms. */
560 extern rtx
sign_expand_binop (enum machine_mode
, optab
, optab
, rtx
, rtx
,
561 rtx
, int, enum optab_methods
);
563 /* Generate code to perform an operation on one operand with two results. */
564 extern int expand_twoval_unop (optab
, rtx
, rtx
, rtx
, int);
566 /* Generate code to perform an operation on two operands with two results. */
567 extern int expand_twoval_binop (optab
, rtx
, rtx
, rtx
, rtx
, int);
569 /* Generate code to perform an operation on two operands with two
570 results, using a library function. */
571 extern bool expand_twoval_binop_libfunc (optab
, rtx
, rtx
, rtx
, rtx
,
574 /* Expand a unary arithmetic operation given optab rtx operand. */
575 extern rtx
expand_unop (enum machine_mode
, optab
, rtx
, rtx
, int);
577 /* Expand the absolute value operation. */
578 extern rtx
expand_abs_nojump (enum machine_mode
, rtx
, rtx
, int);
579 extern rtx
expand_abs (enum machine_mode
, rtx
, rtx
, int, int);
581 /* Expand the copysign operation. */
582 extern rtx
expand_copysign (rtx
, rtx
, rtx
);
584 /* Generate an instruction with a given INSN_CODE with an output and
586 extern void emit_unop_insn (int, rtx
, rtx
, enum rtx_code
);
588 /* Emit code to perform a series of operations on a multi-word quantity, one
590 extern rtx
emit_no_conflict_block (rtx
, rtx
, rtx
, rtx
, rtx
);
592 /* Emit one rtl insn to compare two rtx's. */
593 extern void emit_cmp_insn (rtx
, rtx
, enum rtx_code
, rtx
, enum machine_mode
,
596 /* The various uses that a comparison can have; used by can_compare_p:
597 jumps, conditional moves, store flag operations. */
598 enum can_compare_purpose
605 /* Return the optab used for computing the given operation on the type
606 given by the second argument. */
607 extern optab
optab_for_tree_code (enum tree_code
, tree
);
609 /* Nonzero if a compare of mode MODE can be done straightforwardly
610 (without splitting it into pieces). */
611 extern int can_compare_p (enum rtx_code
, enum machine_mode
,
612 enum can_compare_purpose
);
614 /* Return the INSN_CODE to use for an extend operation. */
615 extern enum insn_code
can_extend_p (enum machine_mode
, enum machine_mode
, int);
617 /* Generate the body of an insn to extend Y (with mode MFROM)
618 into X (with mode MTO). Do zero-extension if UNSIGNEDP is nonzero. */
619 extern rtx
gen_extend_insn (rtx
, rtx
, enum machine_mode
,
620 enum machine_mode
, int);
622 /* Call this to reset the function entry for one optab. */
623 extern void set_optab_libfunc (optab
, enum machine_mode
, const char *);
624 extern void set_conv_libfunc (convert_optab
, enum machine_mode
,
625 enum machine_mode
, const char *);
627 /* Generate code for a FLOAT_EXPR. */
628 extern void expand_float (rtx
, rtx
, int);
630 /* Generate code for a FIX_EXPR. */
631 extern void expand_fix (rtx
, rtx
, int);
633 /* Generate code for float to integral conversion. */
634 extern bool expand_sfix_optab (rtx
, rtx
, convert_optab
);
636 /* Return tree if target supports vector operations for COND_EXPR. */
637 bool expand_vec_cond_expr_p (tree
, enum machine_mode
);
639 /* Generate code for VEC_COND_EXPR. */
640 extern rtx
expand_vec_cond_expr (tree
, rtx
);
642 /* Generate code for VEC_LSHIFT_EXPR and VEC_RSHIFT_EXPR. */
643 extern rtx
expand_vec_shift_expr (tree
, rtx
);
645 #endif /* GCC_OPTABS_H */