1/* Definitions for code generation pass of GNU compiler.
2   Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
3   Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 3, or (at your option)
10any later version.
11
12GCC is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING3.  If not see
19<http://www.gnu.org/licenses/>.  */
20
21#ifndef GCC_OPTABS_H
22#define GCC_OPTABS_H
23
24#include "insn-codes.h"
25
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
30   For example, add_optab applies to addition.
31
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.
35
36   The `lib_call' slot is the name of the library function that
37   can be used to perform the operation.
38
39   A few optabs, such as move_optab, are used by special code.  */
40
41struct optab_handlers
42{
43  enum insn_code insn_code;
44};
45
46struct optab_d
47{
48  enum rtx_code code;
49  const char *libcall_basename;
50  char libcall_suffix;
51  void (*libcall_gen)(struct optab_d *, const char *name, char suffix,
52		      enum machine_mode);
53  struct optab_handlers handlers[NUM_MACHINE_MODES];
54};
55typedef struct optab_d * optab;
56
57/* A convert_optab is for some sort of conversion operation between
58   modes.  The first array index is the destination mode, the second
59   is the source mode.  */
60struct convert_optab_d
61{
62  enum rtx_code code;
63  const char *libcall_basename;
64  void (*libcall_gen)(struct convert_optab_d *, const char *name,
65		      enum machine_mode,
66		      enum machine_mode);
67  struct optab_handlers handlers[NUM_MACHINE_MODES][NUM_MACHINE_MODES];
68};
69typedef struct convert_optab_d *convert_optab;
70
71/* Given an enum insn_code, access the function to construct
72   the body of that kind of insn.  */
73#define GEN_FCN(CODE) (insn_data[CODE].genfun)
74
75/* Enumeration of valid indexes into optab_table.  */
76enum optab_index
77{
78  /* Fixed-point operators with signed/unsigned saturation */
79  OTI_ssadd,
80  OTI_usadd,
81  OTI_sssub,
82  OTI_ussub,
83  OTI_ssmul,
84  OTI_usmul,
85  OTI_ssdiv,
86  OTI_usdiv,
87  OTI_ssneg,
88  OTI_usneg,
89  OTI_ssashl,
90  OTI_usashl,
91
92  OTI_add,
93  OTI_addv,
94  OTI_sub,
95  OTI_subv,
96
97  /* Signed and fp multiply */
98  OTI_smul,
99  OTI_smulv,
100  /* Signed multiply, return high word */
101  OTI_smul_highpart,
102  OTI_umul_highpart,
103  /* Signed multiply with result one machine mode wider than args */
104  OTI_smul_widen,
105  OTI_umul_widen,
106  /* Widening multiply of one unsigned and one signed operand.  */
107  OTI_usmul_widen,
108  /* Signed multiply and add with the result and addend one machine mode
109     wider than the multiplicand and multiplier.  */
110  OTI_smadd_widen,
111  /* Unsigned multiply and add with the result and addend one machine mode
112     wider than the multiplicand and multiplier.  */
113  OTI_umadd_widen,
114  /* Signed multiply and add with the result and addend one machine mode
115     wider than the multiplicand and multiplier.
116     All involved operations are saturating.  */
117  OTI_ssmadd_widen,
118  /* Unsigned multiply and add with the result and addend one machine mode
119     wider than the multiplicand and multiplier.
120     All involved operations are saturating.  */
121  OTI_usmadd_widen,
122  /* Signed multiply and subtract the result and minuend one machine mode
123     wider than the multiplicand and multiplier.  */
124  OTI_smsub_widen,
125  /* Unsigned multiply and subtract the result and minuend one machine mode
126     wider than the multiplicand and multiplier.  */
127  OTI_umsub_widen,
128  /* Signed multiply and subtract the result and minuend one machine mode
129     wider than the multiplicand and multiplier.
130     All involved operations are saturating.  */
131  OTI_ssmsub_widen,
132  /* Unsigned multiply and subtract the result and minuend one machine mode
133     wider than the multiplicand and multiplier.
134     All involved operations are saturating.  */
135  OTI_usmsub_widen,
136
137  /* Signed divide */
138  OTI_sdiv,
139  OTI_sdivv,
140  /* Signed divide-and-remainder in one */
141  OTI_sdivmod,
142  OTI_udiv,
143  OTI_udivmod,
144  /* Signed remainder */
145  OTI_smod,
146  OTI_umod,
147  /* Floating point remainder functions */
148  OTI_fmod,
149  OTI_remainder,
150  /* Convert float to integer in float fmt */
151  OTI_ftrunc,
152
153  /* Logical and */
154  OTI_and,
155  /* Logical or */
156  OTI_ior,
157  /* Logical xor */
158  OTI_xor,
159
160  /* Arithmetic shift left */
161  OTI_ashl,
162  /* Logical shift right */
163  OTI_lshr,
164  /* Arithmetic shift right */
165  OTI_ashr,
166  /* Rotate left */
167  OTI_rotl,
168  /* Rotate right */
169  OTI_rotr,
170
171  /* Arithmetic shift left of vector by vector */
172  OTI_vashl,
173  /* Logical shift right of vector by vector */
174  OTI_vlshr,
175  /* Arithmetic shift right of vector by vector */
176  OTI_vashr,
177  /* Rotate left of vector by vector */
178  OTI_vrotl,
179  /* Rotate right of vector by vector */
180  OTI_vrotr,
181
182  /* Signed and floating-point minimum value */
183  OTI_smin,
184  /* Signed and floating-point maximum value */
185  OTI_smax,
186  /* Unsigned minimum value */
187  OTI_umin,
188  /* Unsigned maximum value */
189  OTI_umax,
190  /* Power */
191  OTI_pow,
192  /* Arc tangent of y/x */
193  OTI_atan2,
194
195  /* Move instruction.  */
196  OTI_mov,
197  /* Move, preserving high part of register.  */
198  OTI_movstrict,
199  /* Move, with a misaligned memory.  */
200  OTI_movmisalign,
201  /* Nontemporal store.  */
202  OTI_storent,
203
204  /* Unary operations */
205  /* Negation */
206  OTI_neg,
207  OTI_negv,
208  /* Abs value */
209  OTI_abs,
210  OTI_absv,
211  /* Byteswap */
212  OTI_bswap,
213  /* Bitwise not */
214  OTI_one_cmpl,
215  /* Bit scanning and counting */
216  OTI_ffs,
217  OTI_clz,
218  OTI_ctz,
219  OTI_popcount,
220  OTI_parity,
221  /* Square root */
222  OTI_sqrt,
223  /* Sine-Cosine */
224  OTI_sincos,
225  /* Sine */
226  OTI_sin,
227  /* Inverse sine */
228  OTI_asin,
229  /* Cosine */
230  OTI_cos,
231  /* Inverse cosine */
232  OTI_acos,
233  /* Exponential */
234  OTI_exp,
235  /* Base-10 Exponential */
236  OTI_exp10,
237  /* Base-2 Exponential */
238  OTI_exp2,
239  /* Exponential - 1*/
240  OTI_expm1,
241  /* Load exponent of a floating point number */
242  OTI_ldexp,
243  /* Multiply floating-point number by integral power of radix */
244  OTI_scalb,
245  /* Mantissa of a floating-point number */
246  OTI_significand,
247  /* Radix-independent exponent */
248  OTI_logb,
249  OTI_ilogb,
250  /* Natural Logarithm */
251  OTI_log,
252  /* Base-10 Logarithm */
253  OTI_log10,
254  /* Base-2 Logarithm */
255  OTI_log2,
256  /* logarithm of 1 plus argument */
257  OTI_log1p,
258  /* Rounding functions */
259  OTI_floor,
260  OTI_ceil,
261  OTI_btrunc,
262  OTI_round,
263  OTI_nearbyint,
264  OTI_rint,
265  /* Tangent */
266  OTI_tan,
267  /* Inverse tangent */
268  OTI_atan,
269  /* Copy sign */
270  OTI_copysign,
271  /* Signbit */
272  OTI_signbit,
273  /* Test for infinite value */
274  OTI_isinf,
275
276  /* Compare insn; two operands.  Used only for libcalls.  */
277  OTI_cmp,
278  OTI_ucmp,
279
280  /* Floating point comparison optabs - used primarily for libfuncs */
281  OTI_eq,
282  OTI_ne,
283  OTI_gt,
284  OTI_ge,
285  OTI_lt,
286  OTI_le,
287  OTI_unord,
288
289  /* String length */
290  OTI_strlen,
291
292  /* Combined compare & jump/move/store flags/trap operations.  */
293  OTI_cbranch,
294  OTI_cmov,
295  OTI_cstore,
296  OTI_ctrap,
297
298  /* Push instruction.  */
299  OTI_push,
300
301  /* Conditional add instruction.  */
302  OTI_addcc,
303
304  /* Reduction operations on a vector operand.  */
305  OTI_reduc_smax,
306  OTI_reduc_umax,
307  OTI_reduc_smin,
308  OTI_reduc_umin,
309  OTI_reduc_splus,
310  OTI_reduc_uplus,
311
312  /* Summation, with result machine mode one or more wider than args.  */
313  OTI_ssum_widen,
314  OTI_usum_widen,
315
316  /* Dot product, with result machine mode one or more wider than args.  */
317  OTI_sdot_prod,
318  OTI_udot_prod,
319
320  /* Set specified field of vector operand.  */
321  OTI_vec_set,
322  /* Extract specified field of vector operand.  */
323  OTI_vec_extract,
324  /* Extract even/odd fields of vector operands.  */
325  OTI_vec_extract_even,
326  OTI_vec_extract_odd,
327  /* Interleave fields of vector operands.  */
328  OTI_vec_interleave_high,
329  OTI_vec_interleave_low,
330  /* Initialize vector operand.  */
331  OTI_vec_init,
332  /* Whole vector shift. The shift amount is in bits.  */
333  OTI_vec_shl,
334  OTI_vec_shr,
335  /* Extract specified elements from vectors, for vector load.  */
336  OTI_vec_realign_load,
337  /* Widening multiplication.
338     The high/low part of the resulting vector of products is returned.  */
339  OTI_vec_widen_umult_hi,
340  OTI_vec_widen_umult_lo,
341  OTI_vec_widen_smult_hi,
342  OTI_vec_widen_smult_lo,
343  /* Extract and widen the high/low part of a vector of signed or
344     floating point elements.  */
345  OTI_vec_unpacks_hi,
346  OTI_vec_unpacks_lo,
347  /* Extract and widen the high/low part of a vector of unsigned
348     elements.  */
349  OTI_vec_unpacku_hi,
350  OTI_vec_unpacku_lo,
351
352  /* Extract, convert to floating point and widen the high/low part of
353     a vector of signed or unsigned integer elements.  */
354  OTI_vec_unpacks_float_hi,
355  OTI_vec_unpacks_float_lo,
356  OTI_vec_unpacku_float_hi,
357  OTI_vec_unpacku_float_lo,
358
359  /* Narrow (demote) and merge the elements of two vectors.  */
360  OTI_vec_pack_trunc,
361  OTI_vec_pack_usat,
362  OTI_vec_pack_ssat,
363
364  /* Convert to signed/unsigned integer, narrow and merge elements
365     of two vectors of floating point elements.  */
366  OTI_vec_pack_sfix_trunc,
367  OTI_vec_pack_ufix_trunc,
368
369  /* Perform a raise to the power of integer.  */
370  OTI_powi,
371
372  OTI_MAX
373};
374
375extern struct optab_d optab_table[OTI_MAX];
376
377#define ssadd_optab (&optab_table[OTI_ssadd])
378#define usadd_optab (&optab_table[OTI_usadd])
379#define sssub_optab (&optab_table[OTI_sssub])
380#define ussub_optab (&optab_table[OTI_ussub])
381#define ssmul_optab (&optab_table[OTI_ssmul])
382#define usmul_optab (&optab_table[OTI_usmul])
383#define ssdiv_optab (&optab_table[OTI_ssdiv])
384#define usdiv_optab (&optab_table[OTI_usdiv])
385#define ssneg_optab (&optab_table[OTI_ssneg])
386#define usneg_optab (&optab_table[OTI_usneg])
387#define ssashl_optab (&optab_table[OTI_ssashl])
388#define usashl_optab (&optab_table[OTI_usashl])
389
390#define add_optab (&optab_table[OTI_add])
391#define sub_optab (&optab_table[OTI_sub])
392#define smul_optab (&optab_table[OTI_smul])
393#define addv_optab (&optab_table[OTI_addv])
394#define subv_optab (&optab_table[OTI_subv])
395#define smul_highpart_optab (&optab_table[OTI_smul_highpart])
396#define umul_highpart_optab (&optab_table[OTI_umul_highpart])
397#define smul_widen_optab (&optab_table[OTI_smul_widen])
398#define umul_widen_optab (&optab_table[OTI_umul_widen])
399#define usmul_widen_optab (&optab_table[OTI_usmul_widen])
400#define smadd_widen_optab (&optab_table[OTI_smadd_widen])
401#define umadd_widen_optab (&optab_table[OTI_umadd_widen])
402#define ssmadd_widen_optab (&optab_table[OTI_ssmadd_widen])
403#define usmadd_widen_optab (&optab_table[OTI_usmadd_widen])
404#define smsub_widen_optab (&optab_table[OTI_smsub_widen])
405#define umsub_widen_optab (&optab_table[OTI_umsub_widen])
406#define ssmsub_widen_optab (&optab_table[OTI_ssmsub_widen])
407#define usmsub_widen_optab (&optab_table[OTI_usmsub_widen])
408#define sdiv_optab (&optab_table[OTI_sdiv])
409#define smulv_optab (&optab_table[OTI_smulv])
410#define sdivv_optab (&optab_table[OTI_sdivv])
411#define sdivmod_optab (&optab_table[OTI_sdivmod])
412#define udiv_optab (&optab_table[OTI_udiv])
413#define udivmod_optab (&optab_table[OTI_udivmod])
414#define smod_optab (&optab_table[OTI_smod])
415#define umod_optab (&optab_table[OTI_umod])
416#define fmod_optab (&optab_table[OTI_fmod])
417#define remainder_optab (&optab_table[OTI_remainder])
418#define ftrunc_optab (&optab_table[OTI_ftrunc])
419#define and_optab (&optab_table[OTI_and])
420#define ior_optab (&optab_table[OTI_ior])
421#define xor_optab (&optab_table[OTI_xor])
422#define ashl_optab (&optab_table[OTI_ashl])
423#define lshr_optab (&optab_table[OTI_lshr])
424#define ashr_optab (&optab_table[OTI_ashr])
425#define rotl_optab (&optab_table[OTI_rotl])
426#define rotr_optab (&optab_table[OTI_rotr])
427#define vashl_optab (&optab_table[OTI_vashl])
428#define vlshr_optab (&optab_table[OTI_vlshr])
429#define vashr_optab (&optab_table[OTI_vashr])
430#define vrotl_optab (&optab_table[OTI_vrotl])
431#define vrotr_optab (&optab_table[OTI_vrotr])
432#define smin_optab (&optab_table[OTI_smin])
433#define smax_optab (&optab_table[OTI_smax])
434#define umin_optab (&optab_table[OTI_umin])
435#define umax_optab (&optab_table[OTI_umax])
436#define pow_optab (&optab_table[OTI_pow])
437#define atan2_optab (&optab_table[OTI_atan2])
438
439#define mov_optab (&optab_table[OTI_mov])
440#define movstrict_optab (&optab_table[OTI_movstrict])
441#define movmisalign_optab (&optab_table[OTI_movmisalign])
442#define storent_optab (&optab_table[OTI_storent])
443
444#define neg_optab (&optab_table[OTI_neg])
445#define negv_optab (&optab_table[OTI_negv])
446#define abs_optab (&optab_table[OTI_abs])
447#define absv_optab (&optab_table[OTI_absv])
448#define one_cmpl_optab (&optab_table[OTI_one_cmpl])
449#define bswap_optab (&optab_table[OTI_bswap])
450#define ffs_optab (&optab_table[OTI_ffs])
451#define clz_optab (&optab_table[OTI_clz])
452#define ctz_optab (&optab_table[OTI_ctz])
453#define popcount_optab (&optab_table[OTI_popcount])
454#define parity_optab (&optab_table[OTI_parity])
455#define sqrt_optab (&optab_table[OTI_sqrt])
456#define sincos_optab (&optab_table[OTI_sincos])
457#define sin_optab (&optab_table[OTI_sin])
458#define asin_optab (&optab_table[OTI_asin])
459#define cos_optab (&optab_table[OTI_cos])
460#define acos_optab (&optab_table[OTI_acos])
461#define exp_optab (&optab_table[OTI_exp])
462#define exp10_optab (&optab_table[OTI_exp10])
463#define exp2_optab (&optab_table[OTI_exp2])
464#define expm1_optab (&optab_table[OTI_expm1])
465#define ldexp_optab (&optab_table[OTI_ldexp])
466#define scalb_optab (&optab_table[OTI_scalb])
467#define significand_optab (&optab_table[OTI_significand])
468#define logb_optab (&optab_table[OTI_logb])
469#define ilogb_optab (&optab_table[OTI_ilogb])
470#define log_optab (&optab_table[OTI_log])
471#define log10_optab (&optab_table[OTI_log10])
472#define log2_optab (&optab_table[OTI_log2])
473#define log1p_optab (&optab_table[OTI_log1p])
474#define floor_optab (&optab_table[OTI_floor])
475#define ceil_optab (&optab_table[OTI_ceil])
476#define btrunc_optab (&optab_table[OTI_btrunc])
477#define round_optab (&optab_table[OTI_round])
478#define nearbyint_optab (&optab_table[OTI_nearbyint])
479#define rint_optab (&optab_table[OTI_rint])
480#define tan_optab (&optab_table[OTI_tan])
481#define atan_optab (&optab_table[OTI_atan])
482#define copysign_optab (&optab_table[OTI_copysign])
483#define signbit_optab (&optab_table[OTI_signbit])
484#define isinf_optab (&optab_table[OTI_isinf])
485
486#define cmp_optab (&optab_table[OTI_cmp])
487#define ucmp_optab (&optab_table[OTI_ucmp])
488
489#define eq_optab (&optab_table[OTI_eq])
490#define ne_optab (&optab_table[OTI_ne])
491#define gt_optab (&optab_table[OTI_gt])
492#define ge_optab (&optab_table[OTI_ge])
493#define lt_optab (&optab_table[OTI_lt])
494#define le_optab (&optab_table[OTI_le])
495#define unord_optab (&optab_table[OTI_unord])
496
497#define strlen_optab (&optab_table[OTI_strlen])
498
499#define cbranch_optab (&optab_table[OTI_cbranch])
500#define cmov_optab (&optab_table[OTI_cmov])
501#define cstore_optab (&optab_table[OTI_cstore])
502#define ctrap_optab (&optab_table[OTI_ctrap])
503
504#define push_optab (&optab_table[OTI_push])
505#define addcc_optab (&optab_table[OTI_addcc])
506
507#define reduc_smax_optab (&optab_table[OTI_reduc_smax])
508#define reduc_umax_optab (&optab_table[OTI_reduc_umax])
509#define reduc_smin_optab (&optab_table[OTI_reduc_smin])
510#define reduc_umin_optab (&optab_table[OTI_reduc_umin])
511#define reduc_splus_optab (&optab_table[OTI_reduc_splus])
512#define reduc_uplus_optab (&optab_table[OTI_reduc_uplus])
513
514#define ssum_widen_optab (&optab_table[OTI_ssum_widen])
515#define usum_widen_optab (&optab_table[OTI_usum_widen])
516#define sdot_prod_optab (&optab_table[OTI_sdot_prod])
517#define udot_prod_optab (&optab_table[OTI_udot_prod])
518
519#define vec_set_optab (&optab_table[OTI_vec_set])
520#define vec_extract_optab (&optab_table[OTI_vec_extract])
521#define vec_extract_even_optab (&optab_table[OTI_vec_extract_even])
522#define vec_extract_odd_optab (&optab_table[OTI_vec_extract_odd])
523#define vec_interleave_high_optab (&optab_table[OTI_vec_interleave_high])
524#define vec_interleave_low_optab (&optab_table[OTI_vec_interleave_low])
525#define vec_init_optab (&optab_table[OTI_vec_init])
526#define vec_shl_optab (&optab_table[OTI_vec_shl])
527#define vec_shr_optab (&optab_table[OTI_vec_shr])
528#define vec_realign_load_optab (&optab_table[OTI_vec_realign_load])
529#define vec_widen_umult_hi_optab (&optab_table[OTI_vec_widen_umult_hi])
530#define vec_widen_umult_lo_optab (&optab_table[OTI_vec_widen_umult_lo])
531#define vec_widen_smult_hi_optab (&optab_table[OTI_vec_widen_smult_hi])
532#define vec_widen_smult_lo_optab (&optab_table[OTI_vec_widen_smult_lo])
533#define vec_unpacks_hi_optab (&optab_table[OTI_vec_unpacks_hi])
534#define vec_unpacks_lo_optab (&optab_table[OTI_vec_unpacks_lo])
535#define vec_unpacku_hi_optab (&optab_table[OTI_vec_unpacku_hi])
536#define vec_unpacku_lo_optab (&optab_table[OTI_vec_unpacku_lo])
537#define vec_unpacks_float_hi_optab (&optab_table[OTI_vec_unpacks_float_hi])
538#define vec_unpacks_float_lo_optab (&optab_table[OTI_vec_unpacks_float_lo])
539#define vec_unpacku_float_hi_optab (&optab_table[OTI_vec_unpacku_float_hi])
540#define vec_unpacku_float_lo_optab (&optab_table[OTI_vec_unpacku_float_lo])
541#define vec_pack_trunc_optab (&optab_table[OTI_vec_pack_trunc])
542#define vec_pack_ssat_optab (&optab_table[OTI_vec_pack_ssat])
543#define vec_pack_usat_optab (&optab_table[OTI_vec_pack_usat])
544#define vec_pack_sfix_trunc_optab (&optab_table[OTI_vec_pack_sfix_trunc])
545#define vec_pack_ufix_trunc_optab (&optab_table[OTI_vec_pack_ufix_trunc])
546
547#define powi_optab (&optab_table[OTI_powi])
548
549/* Conversion optabs have their own table and indexes.  */
550enum convert_optab_index
551{
552  COI_sext,
553  COI_zext,
554  COI_trunc,
555
556  COI_sfix,
557  COI_ufix,
558
559  COI_sfixtrunc,
560  COI_ufixtrunc,
561
562  COI_sfloat,
563  COI_ufloat,
564
565  COI_lrint,
566  COI_lround,
567  COI_lfloor,
568  COI_lceil,
569
570  COI_fract,
571  COI_fractuns,
572  COI_satfract,
573  COI_satfractuns,
574
575  COI_MAX
576};
577
578extern struct convert_optab_d convert_optab_table[COI_MAX];
579
580#define sext_optab (&convert_optab_table[COI_sext])
581#define zext_optab (&convert_optab_table[COI_zext])
582#define trunc_optab (&convert_optab_table[COI_trunc])
583#define sfix_optab (&convert_optab_table[COI_sfix])
584#define ufix_optab (&convert_optab_table[COI_ufix])
585#define sfixtrunc_optab (&convert_optab_table[COI_sfixtrunc])
586#define ufixtrunc_optab (&convert_optab_table[COI_ufixtrunc])
587#define sfloat_optab (&convert_optab_table[COI_sfloat])
588#define ufloat_optab (&convert_optab_table[COI_ufloat])
589#define lrint_optab (&convert_optab_table[COI_lrint])
590#define lround_optab (&convert_optab_table[COI_lround])
591#define lfloor_optab (&convert_optab_table[COI_lfloor])
592#define lceil_optab (&convert_optab_table[COI_lceil])
593#define fract_optab (&convert_optab_table[COI_fract])
594#define fractuns_optab (&convert_optab_table[COI_fractuns])
595#define satfract_optab (&convert_optab_table[COI_satfract])
596#define satfractuns_optab (&convert_optab_table[COI_satfractuns])
597
598/* These arrays record the insn_code of insns that may be needed to
599   perform input and output reloads of special objects.  They provide a
600   place to pass a scratch register.  */
601extern enum insn_code reload_in_optab[NUM_MACHINE_MODES];
602extern enum insn_code reload_out_optab[NUM_MACHINE_MODES];
603
604/* Contains the optab used for each rtx code.  */
605extern optab code_to_optab[NUM_RTX_CODE + 1];
606
607
608typedef rtx (*rtxfun) (rtx);
609
610#ifdef HAVE_conditional_move
611/* Indexed by the machine mode, gives the insn code to make a conditional
612   move insn.  */
613
614extern enum insn_code movcc_gen_code[NUM_MACHINE_MODES];
615#endif
616
617/* Indexed by the machine mode, gives the insn code for vector conditional
618   operation.  */
619
620extern enum insn_code vcond_gen_code[NUM_MACHINE_MODES];
621extern enum insn_code vcondu_gen_code[NUM_MACHINE_MODES];
622
623/* This array records the insn_code of insns to perform block moves.  */
624extern enum insn_code movmem_optab[NUM_MACHINE_MODES];
625
626/* This array records the insn_code of insns to perform block sets.  */
627extern enum insn_code setmem_optab[NUM_MACHINE_MODES];
628
629/* These arrays record the insn_code of two different kinds of insns
630   to perform block compares.  */
631extern enum insn_code cmpstr_optab[NUM_MACHINE_MODES];
632extern enum insn_code cmpstrn_optab[NUM_MACHINE_MODES];
633extern enum insn_code cmpmem_optab[NUM_MACHINE_MODES];
634
635/* Synchronization primitives.  This first set is atomic operation for
636   which we don't care about the resulting value.  */
637extern enum insn_code sync_add_optab[NUM_MACHINE_MODES];
638extern enum insn_code sync_sub_optab[NUM_MACHINE_MODES];
639extern enum insn_code sync_ior_optab[NUM_MACHINE_MODES];
640extern enum insn_code sync_and_optab[NUM_MACHINE_MODES];
641extern enum insn_code sync_xor_optab[NUM_MACHINE_MODES];
642extern enum insn_code sync_nand_optab[NUM_MACHINE_MODES];
643
644/* This second set is atomic operations in which we return the value
645   that existed in memory before the operation.  */
646extern enum insn_code sync_old_add_optab[NUM_MACHINE_MODES];
647extern enum insn_code sync_old_sub_optab[NUM_MACHINE_MODES];
648extern enum insn_code sync_old_ior_optab[NUM_MACHINE_MODES];
649extern enum insn_code sync_old_and_optab[NUM_MACHINE_MODES];
650extern enum insn_code sync_old_xor_optab[NUM_MACHINE_MODES];
651extern enum insn_code sync_old_nand_optab[NUM_MACHINE_MODES];
652
653/* This third set is atomic operations in which we return the value
654   that resulted after performing the operation.  */
655extern enum insn_code sync_new_add_optab[NUM_MACHINE_MODES];
656extern enum insn_code sync_new_sub_optab[NUM_MACHINE_MODES];
657extern enum insn_code sync_new_ior_optab[NUM_MACHINE_MODES];
658extern enum insn_code sync_new_and_optab[NUM_MACHINE_MODES];
659extern enum insn_code sync_new_xor_optab[NUM_MACHINE_MODES];
660extern enum insn_code sync_new_nand_optab[NUM_MACHINE_MODES];
661
662/* Atomic compare and swap.  */
663extern enum insn_code sync_compare_and_swap[NUM_MACHINE_MODES];
664
665/* Atomic exchange with acquire semantics.  */
666extern enum insn_code sync_lock_test_and_set[NUM_MACHINE_MODES];
667
668/* Atomic clear with release semantics.  */
669extern enum insn_code sync_lock_release[NUM_MACHINE_MODES];
670
671/* Define functions given in optabs.c.  */
672
673extern rtx expand_widen_pattern_expr (sepops ops, rtx op0, rtx op1, rtx wide_op,
674                                      rtx target, int unsignedp);
675
676extern rtx expand_ternary_op (enum machine_mode mode, optab ternary_optab,
677			      rtx op0, rtx op1, rtx op2, rtx target,
678			      int unsignedp);
679
680/* Expand a binary operation given optab and rtx operands.  */
681extern rtx expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
682			 enum optab_methods);
683
684extern bool force_expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
685				enum optab_methods);
686
687/* Expand a binary operation with both signed and unsigned forms.  */
688extern rtx sign_expand_binop (enum machine_mode, optab, optab, rtx, rtx,
689			      rtx, int, enum optab_methods);
690
691/* Generate code to perform an operation on one operand with two results.  */
692extern int expand_twoval_unop (optab, rtx, rtx, rtx, int);
693
694/* Generate code to perform an operation on two operands with two results.  */
695extern int expand_twoval_binop (optab, rtx, rtx, rtx, rtx, int);
696
697/* Generate code to perform an operation on two operands with two
698   results, using a library function.  */
699extern bool expand_twoval_binop_libfunc (optab, rtx, rtx, rtx, rtx,
700					 enum rtx_code);
701
702/* Expand a unary arithmetic operation given optab rtx operand.  */
703extern rtx expand_unop (enum machine_mode, optab, rtx, rtx, int);
704
705/* Expand the absolute value operation.  */
706extern rtx expand_abs_nojump (enum machine_mode, rtx, rtx, int);
707extern rtx expand_abs (enum machine_mode, rtx, rtx, int, int);
708
709/* Expand the one's complement absolute value operation.  */
710extern rtx expand_one_cmpl_abs_nojump (enum machine_mode, rtx, rtx);
711
712/* Expand the copysign operation.  */
713extern rtx expand_copysign (rtx, rtx, rtx);
714
715/* Generate an instruction with a given INSN_CODE with an output and
716   an input.  */
717extern void emit_unop_insn (int, rtx, rtx, enum rtx_code);
718extern bool maybe_emit_unop_insn (int, rtx, rtx, enum rtx_code);
719
720/* An extra flag to control optab_for_tree_code's behavior.  This is needed to
721   distinguish between machines with a vector shift that takes a scalar for the
722   shift amount vs. machines that take a vector for the shift amount.  */
723enum optab_subtype
724{
725  optab_default,
726  optab_scalar,
727  optab_vector
728};
729
730/* Return the optab used for computing the given operation on the type given by
731   the second argument.  The third argument distinguishes between the types of
732   vector shifts and rotates */
733extern optab optab_for_tree_code (enum tree_code, const_tree, enum optab_subtype);
734
735/* The various uses that a comparison can have; used by can_compare_p:
736   jumps, conditional moves, store flag operations.  */
737enum can_compare_purpose
738{
739  ccp_jump,
740  ccp_cmov,
741  ccp_store_flag
742};
743
744/* Nonzero if a compare of mode MODE can be done straightforwardly
745   (without splitting it into pieces).  */
746extern int can_compare_p (enum rtx_code, enum machine_mode,
747			  enum can_compare_purpose);
748
749/* Return the INSN_CODE to use for an extend operation.  */
750extern enum insn_code can_extend_p (enum machine_mode, enum machine_mode, int);
751
752/* Generate the body of an insn to extend Y (with mode MFROM)
753   into X (with mode MTO).  Do zero-extension if UNSIGNEDP is nonzero.  */
754extern rtx gen_extend_insn (rtx, rtx, enum machine_mode,
755			    enum machine_mode, int);
756
757/* Call this to reset the function entry for one optab.  */
758extern void set_optab_libfunc (optab, enum machine_mode, const char *);
759extern void set_conv_libfunc (convert_optab, enum machine_mode,
760			      enum machine_mode, const char *);
761
762/* Generate code for a FIXED_CONVERT_EXPR.  */
763extern void expand_fixed_convert (rtx, rtx, int, int);
764
765/* Generate code for a FLOAT_EXPR.  */
766extern void expand_float (rtx, rtx, int);
767
768/* Generate code for a FIX_EXPR.  */
769extern void expand_fix (rtx, rtx, int);
770
771/* Generate code for float to integral conversion.  */
772extern bool expand_sfix_optab (rtx, rtx, convert_optab);
773
774/* Return tree if target supports vector operations for COND_EXPR.  */
775bool expand_vec_cond_expr_p (tree, enum machine_mode);
776
777/* Generate code for VEC_COND_EXPR.  */
778extern rtx expand_vec_cond_expr (tree, tree, tree, tree, rtx);
779/* Generate code for VEC_LSHIFT_EXPR and VEC_RSHIFT_EXPR.  */
780extern rtx expand_vec_shift_expr (sepops, rtx);
781
782#define optab_handler(optab,mode) (&(optab)->handlers[(int) (mode)])
783#define convert_optab_handler(optab,mode,mode2) \
784	(&(optab)->handlers[(int) (mode)][(int) (mode2)])
785
786extern rtx optab_libfunc (optab optab, enum machine_mode mode);
787extern rtx convert_optab_libfunc (convert_optab optab, enum machine_mode mode1,
788			          enum machine_mode mode2);
789#endif /* GCC_OPTABS_H */
790