1 /* Definitions for code generation pass of GNU compiler.
2 Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
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 3, 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 COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
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 /* 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
,
264 /* Perform a raise to the power of integer. */
270 extern GTY(()) optab optab_table
[OTI_MAX
];
272 #define add_optab (optab_table[OTI_add])
273 #define sub_optab (optab_table[OTI_sub])
274 #define smul_optab (optab_table[OTI_smul])
275 #define addv_optab (optab_table[OTI_addv])
276 #define subv_optab (optab_table[OTI_subv])
277 #define smul_highpart_optab (optab_table[OTI_smul_highpart])
278 #define umul_highpart_optab (optab_table[OTI_umul_highpart])
279 #define smul_widen_optab (optab_table[OTI_smul_widen])
280 #define umul_widen_optab (optab_table[OTI_umul_widen])
281 #define usmul_widen_optab (optab_table[OTI_usmul_widen])
282 #define sdiv_optab (optab_table[OTI_sdiv])
283 #define smulv_optab (optab_table[OTI_smulv])
284 #define sdivv_optab (optab_table[OTI_sdivv])
285 #define sdivmod_optab (optab_table[OTI_sdivmod])
286 #define udiv_optab (optab_table[OTI_udiv])
287 #define udivmod_optab (optab_table[OTI_udivmod])
288 #define smod_optab (optab_table[OTI_smod])
289 #define umod_optab (optab_table[OTI_umod])
290 #define fmod_optab (optab_table[OTI_fmod])
291 #define drem_optab (optab_table[OTI_drem])
292 #define ftrunc_optab (optab_table[OTI_ftrunc])
293 #define and_optab (optab_table[OTI_and])
294 #define ior_optab (optab_table[OTI_ior])
295 #define xor_optab (optab_table[OTI_xor])
296 #define ashl_optab (optab_table[OTI_ashl])
297 #define lshr_optab (optab_table[OTI_lshr])
298 #define ashr_optab (optab_table[OTI_ashr])
299 #define rotl_optab (optab_table[OTI_rotl])
300 #define rotr_optab (optab_table[OTI_rotr])
301 #define smin_optab (optab_table[OTI_smin])
302 #define smax_optab (optab_table[OTI_smax])
303 #define umin_optab (optab_table[OTI_umin])
304 #define umax_optab (optab_table[OTI_umax])
305 #define pow_optab (optab_table[OTI_pow])
306 #define atan2_optab (optab_table[OTI_atan2])
308 #define mov_optab (optab_table[OTI_mov])
309 #define movstrict_optab (optab_table[OTI_movstrict])
310 #define movmisalign_optab (optab_table[OTI_movmisalign])
312 #define neg_optab (optab_table[OTI_neg])
313 #define negv_optab (optab_table[OTI_negv])
314 #define abs_optab (optab_table[OTI_abs])
315 #define absv_optab (optab_table[OTI_absv])
316 #define one_cmpl_optab (optab_table[OTI_one_cmpl])
317 #define ffs_optab (optab_table[OTI_ffs])
318 #define clz_optab (optab_table[OTI_clz])
319 #define ctz_optab (optab_table[OTI_ctz])
320 #define popcount_optab (optab_table[OTI_popcount])
321 #define parity_optab (optab_table[OTI_parity])
322 #define sqrt_optab (optab_table[OTI_sqrt])
323 #define sincos_optab (optab_table[OTI_sincos])
324 #define sin_optab (optab_table[OTI_sin])
325 #define asin_optab (optab_table[OTI_asin])
326 #define cos_optab (optab_table[OTI_cos])
327 #define acos_optab (optab_table[OTI_acos])
328 #define exp_optab (optab_table[OTI_exp])
329 #define exp10_optab (optab_table[OTI_exp10])
330 #define exp2_optab (optab_table[OTI_exp2])
331 #define expm1_optab (optab_table[OTI_expm1])
332 #define ldexp_optab (optab_table[OTI_ldexp])
333 #define logb_optab (optab_table[OTI_logb])
334 #define ilogb_optab (optab_table[OTI_ilogb])
335 #define log_optab (optab_table[OTI_log])
336 #define log10_optab (optab_table[OTI_log10])
337 #define log2_optab (optab_table[OTI_log2])
338 #define log1p_optab (optab_table[OTI_log1p])
339 #define floor_optab (optab_table[OTI_floor])
340 #define lfloor_optab (optab_table[OTI_lfloor])
341 #define ceil_optab (optab_table[OTI_ceil])
342 #define lceil_optab (optab_table[OTI_lceil])
343 #define btrunc_optab (optab_table[OTI_btrunc])
344 #define round_optab (optab_table[OTI_round])
345 #define nearbyint_optab (optab_table[OTI_nearbyint])
346 #define rint_optab (optab_table[OTI_rint])
347 #define lrint_optab (optab_table[OTI_lrint])
348 #define tan_optab (optab_table[OTI_tan])
349 #define atan_optab (optab_table[OTI_atan])
350 #define copysign_optab (optab_table[OTI_copysign])
352 #define cmp_optab (optab_table[OTI_cmp])
353 #define ucmp_optab (optab_table[OTI_ucmp])
354 #define tst_optab (optab_table[OTI_tst])
356 #define eq_optab (optab_table[OTI_eq])
357 #define ne_optab (optab_table[OTI_ne])
358 #define gt_optab (optab_table[OTI_gt])
359 #define ge_optab (optab_table[OTI_ge])
360 #define lt_optab (optab_table[OTI_lt])
361 #define le_optab (optab_table[OTI_le])
362 #define unord_optab (optab_table[OTI_unord])
364 #define strlen_optab (optab_table[OTI_strlen])
366 #define cbranch_optab (optab_table[OTI_cbranch])
367 #define cmov_optab (optab_table[OTI_cmov])
368 #define cstore_optab (optab_table[OTI_cstore])
369 #define push_optab (optab_table[OTI_push])
370 #define addcc_optab (optab_table[OTI_addcc])
372 #define reduc_smax_optab (optab_table[OTI_reduc_smax])
373 #define reduc_umax_optab (optab_table[OTI_reduc_umax])
374 #define reduc_smin_optab (optab_table[OTI_reduc_smin])
375 #define reduc_umin_optab (optab_table[OTI_reduc_umin])
376 #define reduc_splus_optab (optab_table[OTI_reduc_splus])
377 #define reduc_uplus_optab (optab_table[OTI_reduc_uplus])
379 #define ssum_widen_optab (optab_table[OTI_ssum_widen])
380 #define usum_widen_optab (optab_table[OTI_usum_widen])
381 #define sdot_prod_optab (optab_table[OTI_sdot_prod])
382 #define udot_prod_optab (optab_table[OTI_udot_prod])
384 #define vec_set_optab (optab_table[OTI_vec_set])
385 #define vec_extract_optab (optab_table[OTI_vec_extract])
386 #define vec_init_optab (optab_table[OTI_vec_init])
387 #define vec_shl_optab (optab_table[OTI_vec_shl])
388 #define vec_shr_optab (optab_table[OTI_vec_shr])
389 #define vec_realign_load_optab (optab_table[OTI_vec_realign_load])
391 #define powi_optab (optab_table[OTI_powi])
393 /* Conversion optabs have their own table and indexes. */
394 enum convert_optab_index
412 extern GTY(()) convert_optab convert_optab_table
[COI_MAX
];
414 #define sext_optab (convert_optab_table[COI_sext])
415 #define zext_optab (convert_optab_table[COI_zext])
416 #define trunc_optab (convert_optab_table[COI_trunc])
417 #define sfix_optab (convert_optab_table[COI_sfix])
418 #define ufix_optab (convert_optab_table[COI_ufix])
419 #define sfixtrunc_optab (convert_optab_table[COI_sfixtrunc])
420 #define ufixtrunc_optab (convert_optab_table[COI_ufixtrunc])
421 #define sfloat_optab (convert_optab_table[COI_sfloat])
422 #define ufloat_optab (convert_optab_table[COI_ufloat])
424 /* These arrays record the insn_code of insns that may be needed to
425 perform input and output reloads of special objects. They provide a
426 place to pass a scratch register. */
427 extern enum insn_code reload_in_optab
[NUM_MACHINE_MODES
];
428 extern enum insn_code reload_out_optab
[NUM_MACHINE_MODES
];
430 /* Contains the optab used for each rtx code. */
431 extern GTY(()) optab code_to_optab
[NUM_RTX_CODE
+ 1];
434 typedef rtx (*rtxfun
) (rtx
);
436 /* Indexed by the rtx-code for a conditional (e.g. EQ, LT,...)
437 gives the gen_function to make a branch to test that condition. */
439 extern rtxfun bcc_gen_fctn
[NUM_RTX_CODE
];
441 /* Indexed by the rtx-code for a conditional (e.g. EQ, LT,...)
442 gives the insn code to make a store-condition insn
443 to test that condition. */
445 extern enum insn_code setcc_gen_code
[NUM_RTX_CODE
];
447 #ifdef HAVE_conditional_move
448 /* Indexed by the machine mode, gives the insn code to make a conditional
451 extern enum insn_code movcc_gen_code
[NUM_MACHINE_MODES
];
454 /* Indexed by the machine mode, gives the insn code for vector conditional
457 extern enum insn_code vcond_gen_code
[NUM_MACHINE_MODES
];
458 extern enum insn_code vcondu_gen_code
[NUM_MACHINE_MODES
];
460 /* This array records the insn_code of insns to perform block moves. */
461 extern enum insn_code movmem_optab
[NUM_MACHINE_MODES
];
463 /* This array records the insn_code of insns to perform block sets. */
464 extern enum insn_code setmem_optab
[NUM_MACHINE_MODES
];
466 /* These arrays record the insn_code of two different kinds of insns
467 to perform block compares. */
468 extern enum insn_code cmpstr_optab
[NUM_MACHINE_MODES
];
469 extern enum insn_code cmpstrn_optab
[NUM_MACHINE_MODES
];
470 extern enum insn_code cmpmem_optab
[NUM_MACHINE_MODES
];
472 /* Synchronization primitives. This first set is atomic operation for
473 which we don't care about the resulting value. */
474 extern enum insn_code sync_add_optab
[NUM_MACHINE_MODES
];
475 extern enum insn_code sync_sub_optab
[NUM_MACHINE_MODES
];
476 extern enum insn_code sync_ior_optab
[NUM_MACHINE_MODES
];
477 extern enum insn_code sync_and_optab
[NUM_MACHINE_MODES
];
478 extern enum insn_code sync_xor_optab
[NUM_MACHINE_MODES
];
479 extern enum insn_code sync_nand_optab
[NUM_MACHINE_MODES
];
481 /* This second set is atomic operations in which we return the value
482 that existed in memory before the operation. */
483 extern enum insn_code sync_old_add_optab
[NUM_MACHINE_MODES
];
484 extern enum insn_code sync_old_sub_optab
[NUM_MACHINE_MODES
];
485 extern enum insn_code sync_old_ior_optab
[NUM_MACHINE_MODES
];
486 extern enum insn_code sync_old_and_optab
[NUM_MACHINE_MODES
];
487 extern enum insn_code sync_old_xor_optab
[NUM_MACHINE_MODES
];
488 extern enum insn_code sync_old_nand_optab
[NUM_MACHINE_MODES
];
490 /* This third set is atomic operations in which we return the value
491 that resulted after performing the operation. */
492 extern enum insn_code sync_new_add_optab
[NUM_MACHINE_MODES
];
493 extern enum insn_code sync_new_sub_optab
[NUM_MACHINE_MODES
];
494 extern enum insn_code sync_new_ior_optab
[NUM_MACHINE_MODES
];
495 extern enum insn_code sync_new_and_optab
[NUM_MACHINE_MODES
];
496 extern enum insn_code sync_new_xor_optab
[NUM_MACHINE_MODES
];
497 extern enum insn_code sync_new_nand_optab
[NUM_MACHINE_MODES
];
499 /* Atomic compare and swap. */
500 extern enum insn_code sync_compare_and_swap
[NUM_MACHINE_MODES
];
501 extern enum insn_code sync_compare_and_swap_cc
[NUM_MACHINE_MODES
];
503 /* Atomic exchange with acquire semantics. */
504 extern enum insn_code sync_lock_test_and_set
[NUM_MACHINE_MODES
];
506 /* Atomic clear with release semantics. */
507 extern enum insn_code sync_lock_release
[NUM_MACHINE_MODES
];
509 /* Define functions given in optabs.c. */
511 extern rtx
expand_widen_pattern_expr (tree exp
, rtx op0
, rtx op1
, rtx wide_op
,
512 rtx target
, int unsignedp
);
514 extern rtx
expand_ternary_op (enum machine_mode mode
, optab ternary_optab
,
515 rtx op0
, rtx op1
, rtx op2
, rtx target
,
518 /* Expand a binary operation given optab and rtx operands. */
519 extern rtx
expand_binop (enum machine_mode
, optab
, rtx
, rtx
, rtx
, int,
522 extern bool force_expand_binop (enum machine_mode
, optab
, rtx
, rtx
, rtx
, int,
525 /* Expand a binary operation with both signed and unsigned forms. */
526 extern rtx
sign_expand_binop (enum machine_mode
, optab
, optab
, rtx
, rtx
,
527 rtx
, int, enum optab_methods
);
529 /* Generate code to perform an operation on one operand with two results. */
530 extern int expand_twoval_unop (optab
, rtx
, rtx
, rtx
, int);
532 /* Generate code to perform an operation on two operands with two results. */
533 extern int expand_twoval_binop (optab
, rtx
, rtx
, rtx
, rtx
, int);
535 /* Generate code to perform an operation on two operands with two
536 results, using a library function. */
537 extern bool expand_twoval_binop_libfunc (optab
, rtx
, rtx
, rtx
, rtx
,
540 /* Expand a unary arithmetic operation given optab rtx operand. */
541 extern rtx
expand_unop (enum machine_mode
, optab
, rtx
, rtx
, int);
543 /* Expand the absolute value operation. */
544 extern rtx
expand_abs_nojump (enum machine_mode
, rtx
, rtx
, int);
545 extern rtx
expand_abs (enum machine_mode
, rtx
, rtx
, int, int);
547 /* Expand the copysign operation. */
548 extern rtx
expand_copysign (rtx
, rtx
, rtx
);
550 /* Generate an instruction with a given INSN_CODE with an output and
552 extern void emit_unop_insn (int, rtx
, rtx
, enum rtx_code
);
554 /* Emit code to perform a series of operations on a multi-word quantity, one
556 extern rtx
emit_no_conflict_block (rtx
, rtx
, rtx
, rtx
, rtx
);
558 /* Emit one rtl insn to compare two rtx's. */
559 extern void emit_cmp_insn (rtx
, rtx
, enum rtx_code
, rtx
, enum machine_mode
,
562 /* The various uses that a comparison can have; used by can_compare_p:
563 jumps, conditional moves, store flag operations. */
564 enum can_compare_purpose
571 /* Return the optab used for computing the given operation on the type
572 given by the second argument. */
573 extern optab
optab_for_tree_code (enum tree_code
, tree
);
575 /* Nonzero if a compare of mode MODE can be done straightforwardly
576 (without splitting it into pieces). */
577 extern int can_compare_p (enum rtx_code
, enum machine_mode
,
578 enum can_compare_purpose
);
580 /* Return the INSN_CODE to use for an extend operation. */
581 extern enum insn_code
can_extend_p (enum machine_mode
, enum machine_mode
, int);
583 /* Generate the body of an insn to extend Y (with mode MFROM)
584 into X (with mode MTO). Do zero-extension if UNSIGNEDP is nonzero. */
585 extern rtx
gen_extend_insn (rtx
, rtx
, enum machine_mode
,
586 enum machine_mode
, int);
588 /* Call this to reset the function entry for one optab. */
589 extern void set_optab_libfunc (optab
, enum machine_mode
, const char *);
590 extern void set_conv_libfunc (convert_optab
, enum machine_mode
,
591 enum machine_mode
, const char *);
593 /* Generate code for a FLOAT_EXPR. */
594 extern void expand_float (rtx
, rtx
, int);
596 /* Generate code for a FIX_EXPR. */
597 extern void expand_fix (rtx
, rtx
, int);
599 /* Return tree if target supports vector operations for COND_EXPR. */
600 bool expand_vec_cond_expr_p (tree
, enum machine_mode
);
602 /* Generate code for VEC_COND_EXPR. */
603 extern rtx
expand_vec_cond_expr (tree
, rtx
);
605 /* Generate code for VEC_LSHIFT_EXPR and VEC_RSHIFT_EXPR. */
606 extern rtx
expand_vec_shift_expr (tree
, rtx
);
608 #endif /* GCC_OPTABS_H */