* tree-ssa-loop-manip.c (split_loop_exit_edge): Return the new block.
[official-gcc.git] / gcc / optabs.h
blob58fb6905175c54a846f9086739489be4958e5806
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)
10 any later version.
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. */
22 #ifndef GCC_OPTABS_H
23 #define GCC_OPTABS_H
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
40 by special code. */
42 struct optab_handlers GTY(())
44 enum insn_code insn_code;
45 rtx libfunc;
48 struct optab GTY(())
50 enum rtx_code 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(())
60 enum rtx_code code;
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. */
70 enum optab_index
72 OTI_add,
73 OTI_addv,
74 OTI_sub,
75 OTI_subv,
77 /* Signed and fp multiply */
78 OTI_smul,
79 OTI_smulv,
80 /* Signed multiply, return high word */
81 OTI_smul_highpart,
82 OTI_umul_highpart,
83 /* Signed multiply with result one machine mode wider than args */
84 OTI_smul_widen,
85 OTI_umul_widen,
86 /* Widening multiply of one unsigned and one signed operand. */
87 OTI_usmul_widen,
89 /* Signed divide */
90 OTI_sdiv,
91 OTI_sdivv,
92 /* Signed divide-and-remainder in one */
93 OTI_sdivmod,
94 OTI_udiv,
95 OTI_udivmod,
96 /* Signed remainder */
97 OTI_smod,
98 OTI_umod,
99 /* Floating point remainder functions */
100 OTI_fmod,
101 OTI_drem,
102 /* Convert float to integer in float fmt */
103 OTI_ftrunc,
105 /* Logical and */
106 OTI_and,
107 /* Logical or */
108 OTI_ior,
109 /* Logical xor */
110 OTI_xor,
112 /* Arithmetic shift left */
113 OTI_ashl,
114 /* Logical shift right */
115 OTI_lshr,
116 /* Arithmetic shift right */
117 OTI_ashr,
118 /* Rotate left */
119 OTI_rotl,
120 /* Rotate right */
121 OTI_rotr,
122 /* Signed and floating-point minimum value */
123 OTI_smin,
124 /* Signed and floating-point maximum value */
125 OTI_smax,
126 /* Unsigned minimum value */
127 OTI_umin,
128 /* Unsigned maximum value */
129 OTI_umax,
130 /* Power */
131 OTI_pow,
132 /* Arc tangent of y/x */
133 OTI_atan2,
135 /* Move instruction. */
136 OTI_mov,
137 /* Move, preserving high part of register. */
138 OTI_movstrict,
139 /* Move, with a misaligned memory. */
140 OTI_movmisalign,
142 /* Unary operations */
143 /* Negation */
144 OTI_neg,
145 OTI_negv,
146 /* Abs value */
147 OTI_abs,
148 OTI_absv,
149 /* Bitwise not */
150 OTI_one_cmpl,
151 /* Bit scanning and counting */
152 OTI_ffs,
153 OTI_clz,
154 OTI_ctz,
155 OTI_popcount,
156 OTI_parity,
157 /* Square root */
158 OTI_sqrt,
159 /* Sine-Cosine */
160 OTI_sincos,
161 /* Sine */
162 OTI_sin,
163 /* Inverse sine */
164 OTI_asin,
165 /* Cosine */
166 OTI_cos,
167 /* Inverse cosine */
168 OTI_acos,
169 /* Exponential */
170 OTI_exp,
171 /* Base-10 Exponential */
172 OTI_exp10,
173 /* Base-2 Exponential */
174 OTI_exp2,
175 /* Exponential - 1*/
176 OTI_expm1,
177 /* Load exponent of a floating point number */
178 OTI_ldexp,
179 /* Radix-independent exponent */
180 OTI_logb,
181 OTI_ilogb,
182 /* Natural Logarithm */
183 OTI_log,
184 /* Base-10 Logarithm */
185 OTI_log10,
186 /* Base-2 Logarithm */
187 OTI_log2,
188 /* logarithm of 1 plus argument */
189 OTI_log1p,
190 /* Rounding functions */
191 OTI_floor,
192 OTI_lfloor,
193 OTI_ceil,
194 OTI_lceil,
195 OTI_btrunc,
196 OTI_round,
197 OTI_nearbyint,
198 OTI_rint,
199 OTI_lrint,
200 /* Tangent */
201 OTI_tan,
202 /* Inverse tangent */
203 OTI_atan,
204 /* Copy sign */
205 OTI_copysign,
207 /* Compare insn; two operands. */
208 OTI_cmp,
209 /* Used only for libcalls for unsigned comparisons. */
210 OTI_ucmp,
211 /* tst insn; compare one operand against 0 */
212 OTI_tst,
214 /* Floating point comparison optabs - used primarily for libfuncs */
215 OTI_eq,
216 OTI_ne,
217 OTI_gt,
218 OTI_ge,
219 OTI_lt,
220 OTI_le,
221 OTI_unord,
223 /* String length */
224 OTI_strlen,
226 /* Combined compare & jump/store flags/move operations. */
227 OTI_cbranch,
228 OTI_cmov,
229 OTI_cstore,
231 /* Push instruction. */
232 OTI_push,
234 /* Conditional add instruction. */
235 OTI_addcc,
237 /* Reduction operations on a vector operand. */
238 OTI_reduc_smax,
239 OTI_reduc_umax,
240 OTI_reduc_smin,
241 OTI_reduc_umin,
242 OTI_reduc_splus,
243 OTI_reduc_uplus,
245 /* Summation, with result machine mode one or more wider than args. */
246 OTI_ssum_widen,
247 OTI_usum_widen,
249 /* Dot product, with result machine mode one or more wider than args. */
250 OTI_sdot_prod,
251 OTI_udot_prod,
253 /* Set specified field of vector operand. */
254 OTI_vec_set,
255 /* Extract specified field of vector operand. */
256 OTI_vec_extract,
257 /* Initialize vector operand. */
258 OTI_vec_init,
259 /* Whole vector shift. The shift amount is in bits. */
260 OTI_vec_shl,
261 OTI_vec_shr,
262 /* Extract specified elements from vectors, for vector load. */
263 OTI_vec_realign_load,
265 /* Perform a raise to the power of integer. */
266 OTI_powi,
268 OTI_MAX
271 extern GTY(()) optab optab_table[OTI_MAX];
273 #define add_optab (optab_table[OTI_add])
274 #define sub_optab (optab_table[OTI_sub])
275 #define smul_optab (optab_table[OTI_smul])
276 #define addv_optab (optab_table[OTI_addv])
277 #define subv_optab (optab_table[OTI_subv])
278 #define smul_highpart_optab (optab_table[OTI_smul_highpart])
279 #define umul_highpart_optab (optab_table[OTI_umul_highpart])
280 #define smul_widen_optab (optab_table[OTI_smul_widen])
281 #define umul_widen_optab (optab_table[OTI_umul_widen])
282 #define usmul_widen_optab (optab_table[OTI_usmul_widen])
283 #define sdiv_optab (optab_table[OTI_sdiv])
284 #define smulv_optab (optab_table[OTI_smulv])
285 #define sdivv_optab (optab_table[OTI_sdivv])
286 #define sdivmod_optab (optab_table[OTI_sdivmod])
287 #define udiv_optab (optab_table[OTI_udiv])
288 #define udivmod_optab (optab_table[OTI_udivmod])
289 #define smod_optab (optab_table[OTI_smod])
290 #define umod_optab (optab_table[OTI_umod])
291 #define fmod_optab (optab_table[OTI_fmod])
292 #define drem_optab (optab_table[OTI_drem])
293 #define ftrunc_optab (optab_table[OTI_ftrunc])
294 #define and_optab (optab_table[OTI_and])
295 #define ior_optab (optab_table[OTI_ior])
296 #define xor_optab (optab_table[OTI_xor])
297 #define ashl_optab (optab_table[OTI_ashl])
298 #define lshr_optab (optab_table[OTI_lshr])
299 #define ashr_optab (optab_table[OTI_ashr])
300 #define rotl_optab (optab_table[OTI_rotl])
301 #define rotr_optab (optab_table[OTI_rotr])
302 #define smin_optab (optab_table[OTI_smin])
303 #define smax_optab (optab_table[OTI_smax])
304 #define umin_optab (optab_table[OTI_umin])
305 #define umax_optab (optab_table[OTI_umax])
306 #define pow_optab (optab_table[OTI_pow])
307 #define atan2_optab (optab_table[OTI_atan2])
309 #define mov_optab (optab_table[OTI_mov])
310 #define movstrict_optab (optab_table[OTI_movstrict])
311 #define movmisalign_optab (optab_table[OTI_movmisalign])
313 #define neg_optab (optab_table[OTI_neg])
314 #define negv_optab (optab_table[OTI_negv])
315 #define abs_optab (optab_table[OTI_abs])
316 #define absv_optab (optab_table[OTI_absv])
317 #define one_cmpl_optab (optab_table[OTI_one_cmpl])
318 #define ffs_optab (optab_table[OTI_ffs])
319 #define clz_optab (optab_table[OTI_clz])
320 #define ctz_optab (optab_table[OTI_ctz])
321 #define popcount_optab (optab_table[OTI_popcount])
322 #define parity_optab (optab_table[OTI_parity])
323 #define sqrt_optab (optab_table[OTI_sqrt])
324 #define sincos_optab (optab_table[OTI_sincos])
325 #define sin_optab (optab_table[OTI_sin])
326 #define asin_optab (optab_table[OTI_asin])
327 #define cos_optab (optab_table[OTI_cos])
328 #define acos_optab (optab_table[OTI_acos])
329 #define exp_optab (optab_table[OTI_exp])
330 #define exp10_optab (optab_table[OTI_exp10])
331 #define exp2_optab (optab_table[OTI_exp2])
332 #define expm1_optab (optab_table[OTI_expm1])
333 #define ldexp_optab (optab_table[OTI_ldexp])
334 #define logb_optab (optab_table[OTI_logb])
335 #define ilogb_optab (optab_table[OTI_ilogb])
336 #define log_optab (optab_table[OTI_log])
337 #define log10_optab (optab_table[OTI_log10])
338 #define log2_optab (optab_table[OTI_log2])
339 #define log1p_optab (optab_table[OTI_log1p])
340 #define floor_optab (optab_table[OTI_floor])
341 #define lfloor_optab (optab_table[OTI_lfloor])
342 #define ceil_optab (optab_table[OTI_ceil])
343 #define lceil_optab (optab_table[OTI_lceil])
344 #define btrunc_optab (optab_table[OTI_btrunc])
345 #define round_optab (optab_table[OTI_round])
346 #define nearbyint_optab (optab_table[OTI_nearbyint])
347 #define rint_optab (optab_table[OTI_rint])
348 #define lrint_optab (optab_table[OTI_lrint])
349 #define tan_optab (optab_table[OTI_tan])
350 #define atan_optab (optab_table[OTI_atan])
351 #define copysign_optab (optab_table[OTI_copysign])
353 #define cmp_optab (optab_table[OTI_cmp])
354 #define ucmp_optab (optab_table[OTI_ucmp])
355 #define tst_optab (optab_table[OTI_tst])
357 #define eq_optab (optab_table[OTI_eq])
358 #define ne_optab (optab_table[OTI_ne])
359 #define gt_optab (optab_table[OTI_gt])
360 #define ge_optab (optab_table[OTI_ge])
361 #define lt_optab (optab_table[OTI_lt])
362 #define le_optab (optab_table[OTI_le])
363 #define unord_optab (optab_table[OTI_unord])
365 #define strlen_optab (optab_table[OTI_strlen])
367 #define cbranch_optab (optab_table[OTI_cbranch])
368 #define cmov_optab (optab_table[OTI_cmov])
369 #define cstore_optab (optab_table[OTI_cstore])
370 #define push_optab (optab_table[OTI_push])
371 #define addcc_optab (optab_table[OTI_addcc])
373 #define reduc_smax_optab (optab_table[OTI_reduc_smax])
374 #define reduc_umax_optab (optab_table[OTI_reduc_umax])
375 #define reduc_smin_optab (optab_table[OTI_reduc_smin])
376 #define reduc_umin_optab (optab_table[OTI_reduc_umin])
377 #define reduc_splus_optab (optab_table[OTI_reduc_splus])
378 #define reduc_uplus_optab (optab_table[OTI_reduc_uplus])
380 #define ssum_widen_optab (optab_table[OTI_ssum_widen])
381 #define usum_widen_optab (optab_table[OTI_usum_widen])
382 #define sdot_prod_optab (optab_table[OTI_sdot_prod])
383 #define udot_prod_optab (optab_table[OTI_udot_prod])
385 #define vec_set_optab (optab_table[OTI_vec_set])
386 #define vec_extract_optab (optab_table[OTI_vec_extract])
387 #define vec_init_optab (optab_table[OTI_vec_init])
388 #define vec_shl_optab (optab_table[OTI_vec_shl])
389 #define vec_shr_optab (optab_table[OTI_vec_shr])
390 #define vec_realign_load_optab (optab_table[OTI_vec_realign_load])
392 #define powi_optab (optab_table[OTI_powi])
394 /* Conversion optabs have their own table and indexes. */
395 enum convert_optab_index
397 COI_sext,
398 COI_zext,
399 COI_trunc,
401 COI_sfix,
402 COI_ufix,
404 COI_sfixtrunc,
405 COI_ufixtrunc,
407 COI_sfloat,
408 COI_ufloat,
410 COI_MAX
413 extern GTY(()) convert_optab convert_optab_table[COI_MAX];
415 #define sext_optab (convert_optab_table[COI_sext])
416 #define zext_optab (convert_optab_table[COI_zext])
417 #define trunc_optab (convert_optab_table[COI_trunc])
418 #define sfix_optab (convert_optab_table[COI_sfix])
419 #define ufix_optab (convert_optab_table[COI_ufix])
420 #define sfixtrunc_optab (convert_optab_table[COI_sfixtrunc])
421 #define ufixtrunc_optab (convert_optab_table[COI_ufixtrunc])
422 #define sfloat_optab (convert_optab_table[COI_sfloat])
423 #define ufloat_optab (convert_optab_table[COI_ufloat])
425 /* These arrays record the insn_code of insns that may be needed to
426 perform input and output reloads of special objects. They provide a
427 place to pass a scratch register. */
428 extern enum insn_code reload_in_optab[NUM_MACHINE_MODES];
429 extern enum insn_code reload_out_optab[NUM_MACHINE_MODES];
431 /* Contains the optab used for each rtx code. */
432 extern GTY(()) optab code_to_optab[NUM_RTX_CODE + 1];
435 typedef rtx (*rtxfun) (rtx);
437 /* Indexed by the rtx-code for a conditional (e.g. EQ, LT,...)
438 gives the gen_function to make a branch to test that condition. */
440 extern rtxfun bcc_gen_fctn[NUM_RTX_CODE];
442 /* Indexed by the rtx-code for a conditional (e.g. EQ, LT,...)
443 gives the insn code to make a store-condition insn
444 to test that condition. */
446 extern enum insn_code setcc_gen_code[NUM_RTX_CODE];
448 #ifdef HAVE_conditional_move
449 /* Indexed by the machine mode, gives the insn code to make a conditional
450 move insn. */
452 extern enum insn_code movcc_gen_code[NUM_MACHINE_MODES];
453 #endif
455 /* Indexed by the machine mode, gives the insn code for vector conditional
456 operation. */
458 extern enum insn_code vcond_gen_code[NUM_MACHINE_MODES];
459 extern enum insn_code vcondu_gen_code[NUM_MACHINE_MODES];
461 /* This array records the insn_code of insns to perform block moves. */
462 extern enum insn_code movmem_optab[NUM_MACHINE_MODES];
464 /* This array records the insn_code of insns to perform block sets. */
465 extern enum insn_code setmem_optab[NUM_MACHINE_MODES];
467 /* These arrays record the insn_code of two different kinds of insns
468 to perform block compares. */
469 extern enum insn_code cmpstr_optab[NUM_MACHINE_MODES];
470 extern enum insn_code cmpstrn_optab[NUM_MACHINE_MODES];
471 extern enum insn_code cmpmem_optab[NUM_MACHINE_MODES];
473 /* Synchronization primitives. This first set is atomic operation for
474 which we don't care about the resulting value. */
475 extern enum insn_code sync_add_optab[NUM_MACHINE_MODES];
476 extern enum insn_code sync_sub_optab[NUM_MACHINE_MODES];
477 extern enum insn_code sync_ior_optab[NUM_MACHINE_MODES];
478 extern enum insn_code sync_and_optab[NUM_MACHINE_MODES];
479 extern enum insn_code sync_xor_optab[NUM_MACHINE_MODES];
480 extern enum insn_code sync_nand_optab[NUM_MACHINE_MODES];
482 /* This second set is atomic operations in which we return the value
483 that existed in memory before the operation. */
484 extern enum insn_code sync_old_add_optab[NUM_MACHINE_MODES];
485 extern enum insn_code sync_old_sub_optab[NUM_MACHINE_MODES];
486 extern enum insn_code sync_old_ior_optab[NUM_MACHINE_MODES];
487 extern enum insn_code sync_old_and_optab[NUM_MACHINE_MODES];
488 extern enum insn_code sync_old_xor_optab[NUM_MACHINE_MODES];
489 extern enum insn_code sync_old_nand_optab[NUM_MACHINE_MODES];
491 /* This third set is atomic operations in which we return the value
492 that resulted after performing the operation. */
493 extern enum insn_code sync_new_add_optab[NUM_MACHINE_MODES];
494 extern enum insn_code sync_new_sub_optab[NUM_MACHINE_MODES];
495 extern enum insn_code sync_new_ior_optab[NUM_MACHINE_MODES];
496 extern enum insn_code sync_new_and_optab[NUM_MACHINE_MODES];
497 extern enum insn_code sync_new_xor_optab[NUM_MACHINE_MODES];
498 extern enum insn_code sync_new_nand_optab[NUM_MACHINE_MODES];
500 /* Atomic compare and swap. */
501 extern enum insn_code sync_compare_and_swap[NUM_MACHINE_MODES];
502 extern enum insn_code sync_compare_and_swap_cc[NUM_MACHINE_MODES];
504 /* Atomic exchange with acquire semantics. */
505 extern enum insn_code sync_lock_test_and_set[NUM_MACHINE_MODES];
507 /* Atomic clear with release semantics. */
508 extern enum insn_code sync_lock_release[NUM_MACHINE_MODES];
510 /* Define functions given in optabs.c. */
512 extern rtx expand_widen_pattern_expr (tree exp, rtx op0, rtx op1, rtx wide_op,
513 rtx target, int unsignedp);
515 extern rtx expand_ternary_op (enum machine_mode mode, optab ternary_optab,
516 rtx op0, rtx op1, rtx op2, rtx target,
517 int unsignedp);
519 /* Expand a binary operation given optab and rtx operands. */
520 extern rtx expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
521 enum optab_methods);
523 extern bool force_expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
524 enum optab_methods);
526 /* Expand a binary operation with both signed and unsigned forms. */
527 extern rtx sign_expand_binop (enum machine_mode, optab, optab, rtx, rtx,
528 rtx, int, enum optab_methods);
530 /* Generate code to perform an operation on one operand with two results. */
531 extern int expand_twoval_unop (optab, rtx, rtx, rtx, int);
533 /* Generate code to perform an operation on two operands with two results. */
534 extern int expand_twoval_binop (optab, rtx, rtx, rtx, rtx, int);
536 /* Generate code to perform an operation on two operands with two
537 results, using a library function. */
538 extern bool expand_twoval_binop_libfunc (optab, rtx, rtx, rtx, rtx,
539 enum rtx_code);
541 /* Expand a unary arithmetic operation given optab rtx operand. */
542 extern rtx expand_unop (enum machine_mode, optab, rtx, rtx, int);
544 /* Expand the absolute value operation. */
545 extern rtx expand_abs_nojump (enum machine_mode, rtx, rtx, int);
546 extern rtx expand_abs (enum machine_mode, rtx, rtx, int, int);
548 /* Expand the copysign operation. */
549 extern rtx expand_copysign (rtx, rtx, rtx);
551 /* Generate an instruction with a given INSN_CODE with an output and
552 an input. */
553 extern void emit_unop_insn (int, rtx, rtx, enum rtx_code);
555 /* Emit code to perform a series of operations on a multi-word quantity, one
556 word at a time. */
557 extern rtx emit_no_conflict_block (rtx, rtx, rtx, rtx, rtx);
559 /* Emit one rtl insn to compare two rtx's. */
560 extern void emit_cmp_insn (rtx, rtx, enum rtx_code, rtx, enum machine_mode,
561 int);
563 /* The various uses that a comparison can have; used by can_compare_p:
564 jumps, conditional moves, store flag operations. */
565 enum can_compare_purpose
567 ccp_jump,
568 ccp_cmov,
569 ccp_store_flag
572 /* Return the optab used for computing the given operation on the type
573 given by the second argument. */
574 extern optab optab_for_tree_code (enum tree_code, tree);
576 /* Nonzero if a compare of mode MODE can be done straightforwardly
577 (without splitting it into pieces). */
578 extern int can_compare_p (enum rtx_code, enum machine_mode,
579 enum can_compare_purpose);
581 /* Return the INSN_CODE to use for an extend operation. */
582 extern enum insn_code can_extend_p (enum machine_mode, enum machine_mode, int);
584 /* Generate the body of an insn to extend Y (with mode MFROM)
585 into X (with mode MTO). Do zero-extension if UNSIGNEDP is nonzero. */
586 extern rtx gen_extend_insn (rtx, rtx, enum machine_mode,
587 enum machine_mode, int);
589 /* Call this to reset the function entry for one optab. */
590 extern void set_optab_libfunc (optab, enum machine_mode, const char *);
591 extern void set_conv_libfunc (convert_optab, enum machine_mode,
592 enum machine_mode, const char *);
594 /* Generate code for a FLOAT_EXPR. */
595 extern void expand_float (rtx, rtx, int);
597 /* Generate code for a FIX_EXPR. */
598 extern void expand_fix (rtx, rtx, int);
600 /* Return tree if target supports vector operations for COND_EXPR. */
601 bool expand_vec_cond_expr_p (tree, enum machine_mode);
603 /* Generate code for VEC_COND_EXPR. */
604 extern rtx expand_vec_cond_expr (tree, rtx);
606 /* Generate code for VEC_LSHIFT_EXPR and VEC_RSHIFT_EXPR. */
607 extern rtx expand_vec_shift_expr (tree, rtx);
609 #endif /* GCC_OPTABS_H */