Add files that I missed when importing NaCl changes earlier
[gcc/nacl-gcc.git] / gcc / optabs.h
blob1637fdcde087b3f3c97fb4adebf7bc478bf75798
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)
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 COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
21 #ifndef GCC_OPTABS_H
22 #define GCC_OPTABS_H
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
39 by special code. */
41 struct optab_handlers GTY(())
43 enum insn_code insn_code;
44 rtx libfunc;
47 struct optab GTY(())
49 enum rtx_code 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(())
59 enum rtx_code code;
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. */
69 enum optab_index
71 OTI_add,
72 OTI_addv,
73 OTI_sub,
74 OTI_subv,
76 /* Signed and fp multiply */
77 OTI_smul,
78 OTI_smulv,
79 /* Signed multiply, return high word */
80 OTI_smul_highpart,
81 OTI_umul_highpart,
82 /* Signed multiply with result one machine mode wider than args */
83 OTI_smul_widen,
84 OTI_umul_widen,
85 /* Widening multiply of one unsigned and one signed operand. */
86 OTI_usmul_widen,
88 /* Signed divide */
89 OTI_sdiv,
90 OTI_sdivv,
91 /* Signed divide-and-remainder in one */
92 OTI_sdivmod,
93 OTI_udiv,
94 OTI_udivmod,
95 /* Signed remainder */
96 OTI_smod,
97 OTI_umod,
98 /* Floating point remainder functions */
99 OTI_fmod,
100 OTI_drem,
101 /* Convert float to integer in float fmt */
102 OTI_ftrunc,
104 /* Logical and */
105 OTI_and,
106 /* Logical or */
107 OTI_ior,
108 /* Logical xor */
109 OTI_xor,
111 /* Arithmetic shift left */
112 OTI_ashl,
113 /* Logical shift right */
114 OTI_lshr,
115 /* Arithmetic shift right */
116 OTI_ashr,
117 /* Rotate left */
118 OTI_rotl,
119 /* Rotate right */
120 OTI_rotr,
121 /* Signed and floating-point minimum value */
122 OTI_smin,
123 /* Signed and floating-point maximum value */
124 OTI_smax,
125 /* Unsigned minimum value */
126 OTI_umin,
127 /* Unsigned maximum value */
128 OTI_umax,
129 /* Power */
130 OTI_pow,
131 /* Arc tangent of y/x */
132 OTI_atan2,
134 /* Move instruction. */
135 OTI_mov,
136 /* Move, preserving high part of register. */
137 OTI_movstrict,
138 /* Move, with a misaligned memory. */
139 OTI_movmisalign,
141 /* Unary operations */
142 /* Negation */
143 OTI_neg,
144 OTI_negv,
145 /* Abs value */
146 OTI_abs,
147 OTI_absv,
148 /* Bitwise not */
149 OTI_one_cmpl,
150 /* Bit scanning and counting */
151 OTI_ffs,
152 OTI_clz,
153 OTI_ctz,
154 OTI_popcount,
155 OTI_parity,
156 /* Square root */
157 OTI_sqrt,
158 /* Sine-Cosine */
159 OTI_sincos,
160 /* Sine */
161 OTI_sin,
162 /* Inverse sine */
163 OTI_asin,
164 /* Cosine */
165 OTI_cos,
166 /* Inverse cosine */
167 OTI_acos,
168 /* Exponential */
169 OTI_exp,
170 /* Base-10 Exponential */
171 OTI_exp10,
172 /* Base-2 Exponential */
173 OTI_exp2,
174 /* Exponential - 1*/
175 OTI_expm1,
176 /* Load exponent of a floating point number */
177 OTI_ldexp,
178 /* Radix-independent exponent */
179 OTI_logb,
180 OTI_ilogb,
181 /* Natural Logarithm */
182 OTI_log,
183 /* Base-10 Logarithm */
184 OTI_log10,
185 /* Base-2 Logarithm */
186 OTI_log2,
187 /* logarithm of 1 plus argument */
188 OTI_log1p,
189 /* Rounding functions */
190 OTI_floor,
191 OTI_lfloor,
192 OTI_ceil,
193 OTI_lceil,
194 OTI_btrunc,
195 OTI_round,
196 OTI_nearbyint,
197 OTI_rint,
198 OTI_lrint,
199 /* Tangent */
200 OTI_tan,
201 /* Inverse tangent */
202 OTI_atan,
203 /* Copy sign */
204 OTI_copysign,
206 /* Compare insn; two operands. */
207 OTI_cmp,
208 /* Used only for libcalls for unsigned comparisons. */
209 OTI_ucmp,
210 /* tst insn; compare one operand against 0 */
211 OTI_tst,
213 /* Floating point comparison optabs - used primarily for libfuncs */
214 OTI_eq,
215 OTI_ne,
216 OTI_gt,
217 OTI_ge,
218 OTI_lt,
219 OTI_le,
220 OTI_unord,
222 /* String length */
223 OTI_strlen,
225 /* Combined compare & jump/store flags/move operations. */
226 OTI_cbranch,
227 OTI_cmov,
228 OTI_cstore,
230 /* Push instruction. */
231 OTI_push,
233 /* Conditional add instruction. */
234 OTI_addcc,
236 /* Reduction operations on a vector operand. */
237 OTI_reduc_smax,
238 OTI_reduc_umax,
239 OTI_reduc_smin,
240 OTI_reduc_umin,
241 OTI_reduc_splus,
242 OTI_reduc_uplus,
244 /* Summation, with result machine mode one or more wider than args. */
245 OTI_ssum_widen,
246 OTI_usum_widen,
248 /* Dot product, with result machine mode one or more wider than args. */
249 OTI_sdot_prod,
250 OTI_udot_prod,
252 /* Set specified field of vector operand. */
253 OTI_vec_set,
254 /* Extract specified field of vector operand. */
255 OTI_vec_extract,
256 /* Initialize vector operand. */
257 OTI_vec_init,
258 /* Whole vector shift. The shift amount is in bits. */
259 OTI_vec_shl,
260 OTI_vec_shr,
261 /* Extract specified elements from vectors, for vector load. */
262 OTI_vec_realign_load,
264 /* Perform a raise to the power of integer. */
265 OTI_powi,
267 OTI_MAX
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
396 COI_sext,
397 COI_zext,
398 COI_trunc,
400 COI_sfix,
401 COI_ufix,
403 COI_sfixtrunc,
404 COI_ufixtrunc,
406 COI_sfloat,
407 COI_ufloat,
409 COI_MAX
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
449 move insn. */
451 extern enum insn_code movcc_gen_code[NUM_MACHINE_MODES];
452 #endif
454 /* Indexed by the machine mode, gives the insn code for vector conditional
455 operation. */
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,
516 int unsignedp);
518 /* Expand a binary operation given optab and rtx operands. */
519 extern rtx expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
520 enum optab_methods);
522 extern bool force_expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
523 enum optab_methods);
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,
538 enum rtx_code);
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
551 an input. */
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
555 word at a time. */
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,
560 int);
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
566 ccp_jump,
567 ccp_cmov,
568 ccp_store_flag
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 */