Line data Source code
1 : /* Definitions for code generation pass of GNU compiler.
2 : Copyright (C) 2001-2026 Free Software Foundation, Inc.
3 :
4 : This file is part of GCC.
5 :
6 : GCC is free software; you can redistribute it and/or modify
7 : it under the terms of the GNU General Public License as published by
8 : the Free Software Foundation; either version 3, or (at your option)
9 : any later version.
10 :
11 : GCC is distributed in the hope that it will be useful,
12 : but WITHOUT ANY WARRANTY; without even the implied warranty of
13 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 : GNU General Public License for more details.
15 :
16 : You should have received a copy of the GNU General Public License
17 : along with GCC; see the file COPYING3. If not see
18 : <http://www.gnu.org/licenses/>. */
19 :
20 : #ifndef GCC_OPTABS_H
21 : #define GCC_OPTABS_H
22 :
23 : #include "optabs-query.h"
24 : #include "optabs-libfuncs.h"
25 : #include "vec-perm-indices.h"
26 :
27 : /* Generate code for a widening multiply. */
28 : extern rtx expand_widening_mult (machine_mode, rtx, rtx, rtx, int, optab);
29 :
30 : /* Describes the type of an expand_operand. Each value is associated
31 : with a create_*_operand function; see the comments above those
32 : functions for details. */
33 : enum expand_operand_type {
34 : EXPAND_FIXED,
35 : EXPAND_OUTPUT,
36 : EXPAND_INPUT,
37 : EXPAND_CONVERT_TO,
38 : EXPAND_CONVERT_FROM,
39 : EXPAND_ADDRESS,
40 : EXPAND_INTEGER,
41 : EXPAND_UNDEFINED_INPUT
42 : };
43 :
44 : /* Information about an operand for instruction expansion. */
45 : class expand_operand {
46 : public:
47 : /* The type of operand. */
48 : ENUM_BITFIELD (expand_operand_type) type : 8;
49 :
50 : /* True if any conversion should treat VALUE as being unsigned
51 : rather than signed. Only meaningful for certain types. */
52 : unsigned int unsigned_p : 1;
53 :
54 : /* Is the target operand. */
55 : unsigned int target : 1;
56 :
57 : /* Unused; available for future use. */
58 : unsigned int unused : 6;
59 :
60 : /* The mode passed to the convert_*_operand function. It has a
61 : type-dependent meaning. */
62 : ENUM_BITFIELD (machine_mode) mode : 16;
63 :
64 : /* The value of the operand. */
65 : rtx value;
66 :
67 : /* The value of an EXPAND_INTEGER operand. */
68 : poly_int64 int_value;
69 : };
70 :
71 : /* Initialize OP with the given fields. Initialise the other fields
72 : to their default values. */
73 :
74 : inline void
75 22132868 : create_expand_operand (class expand_operand *op,
76 : enum expand_operand_type type,
77 : rtx value, machine_mode mode,
78 : bool unsigned_p, poly_int64 int_value = 0)
79 : {
80 22132868 : op->type = type;
81 22132868 : op->unsigned_p = unsigned_p;
82 22132868 : op->target = 0;
83 22132868 : op->unused = 0;
84 22132868 : op->mode = mode;
85 22132868 : op->value = value;
86 22132868 : op->int_value = int_value;
87 : }
88 :
89 : /* Make OP describe an operand that must use rtx X, even if X is volatile. */
90 :
91 : inline void
92 2665679 : create_fixed_operand (class expand_operand *op, rtx x)
93 : {
94 2633176 : create_expand_operand (op, EXPAND_FIXED, x, VOIDmode, false);
95 32477 : }
96 :
97 : /* Make OP describe an output operand that must have mode MODE.
98 : X, if nonnull, is a suggestion for where the output should be stored.
99 : It is OK for VALUE to be inconsistent with MODE, although it will just
100 : be ignored in that case. */
101 :
102 : inline void
103 18809363 : create_output_operand (class expand_operand *op, rtx x,
104 : machine_mode mode)
105 : {
106 18589463 : create_expand_operand (op, EXPAND_OUTPUT, x, mode, false);
107 129722 : }
108 :
109 : /* Make OP describe an input operand that must have mode MODE and
110 : value VALUE; MODE cannot be VOIDmode. The backend may request that
111 : VALUE be copied into a different kind of rtx before being passed
112 : as an operand. */
113 :
114 : inline void
115 17855563 : create_input_operand (class expand_operand *op, rtx value,
116 : machine_mode mode)
117 : {
118 17635991 : create_expand_operand (op, EXPAND_INPUT, value, mode, false);
119 219576 : }
120 :
121 : /* Make OP describe an undefined input operand of mode MODE. MODE cannot
122 : be null. */
123 :
124 : inline void
125 249 : create_undefined_input_operand (class expand_operand *op, machine_mode mode)
126 : {
127 249 : create_expand_operand (op, EXPAND_UNDEFINED_INPUT, gen_rtx_SCRATCH (mode),
128 : mode, false);
129 249 : }
130 :
131 : /* Like create_input_operand, except that VALUE must first be converted
132 : to mode MODE. UNSIGNED_P says whether VALUE is unsigned. */
133 :
134 : inline void
135 197217 : create_convert_operand_to (class expand_operand *op, rtx value,
136 : machine_mode mode, bool unsigned_p)
137 : {
138 197217 : create_expand_operand (op, EXPAND_CONVERT_TO, value, mode, unsigned_p);
139 : }
140 :
141 : /* Make OP describe an input operand that should have the same value
142 : as VALUE, after any mode conversion that the backend might request.
143 : If VALUE is a CONST_INT, it should be treated as having mode MODE.
144 : UNSIGNED_P says whether VALUE is unsigned.
145 :
146 : The conversion of VALUE can include a combination of numerical
147 : conversion (as for convert_modes) and duplicating a scalar to fill
148 : a vector (if VALUE is a scalar but the operand is a vector). */
149 :
150 : inline void
151 506498 : create_convert_operand_from (class expand_operand *op, rtx value,
152 : machine_mode mode, bool unsigned_p)
153 : {
154 493821 : create_expand_operand (op, EXPAND_CONVERT_FROM, value, mode, unsigned_p);
155 10159 : }
156 :
157 :
158 : /* Make OP describe an input Pmode address operand. VALUE is the value
159 : of the address, but it may need to be converted to Pmode first. */
160 :
161 : inline void
162 1306 : create_address_operand (class expand_operand *op, rtx value)
163 : {
164 3442 : create_expand_operand (op, EXPAND_ADDRESS, value, Pmode, false);
165 : }
166 :
167 : extern void create_integer_operand (class expand_operand *, poly_int64);
168 :
169 : /* Passed to expand_simple_binop and expand_binop to say which options
170 : to try to use if the requested operation can't be open-coded on the
171 : requisite mode. Either OPTAB_LIB or OPTAB_LIB_WIDEN says try using
172 : a library call. Either OPTAB_WIDEN or OPTAB_LIB_WIDEN says try
173 : using a wider mode. OPTAB_MUST_WIDEN says try widening and don't
174 : try anything else. */
175 :
176 : enum optab_methods
177 : {
178 : OPTAB_DIRECT,
179 : OPTAB_LIB,
180 : OPTAB_WIDEN,
181 : OPTAB_LIB_WIDEN,
182 : OPTAB_MUST_WIDEN
183 : };
184 :
185 : extern rtx expand_widen_pattern_expr (const struct separate_ops *, rtx , rtx , rtx,
186 : rtx, int);
187 : extern rtx expand_ternary_op (machine_mode mode, optab ternary_optab,
188 : rtx op0, rtx op1, rtx op2, rtx target,
189 : int unsignedp);
190 : extern rtx simplify_expand_binop (machine_mode mode, optab binoptab,
191 : rtx op0, rtx op1, rtx target, int unsignedp,
192 : enum optab_methods methods);
193 : extern bool force_expand_binop (machine_mode, optab, rtx, rtx, rtx, int,
194 : enum optab_methods);
195 : extern rtx expand_vector_broadcast (machine_mode, rtx);
196 :
197 : extern rtx expand_doubleword_divmod (machine_mode, rtx, rtx, rtx *, bool);
198 :
199 : /* Generate code for a simple binary or unary operation. "Simple" in
200 : this case means "can be unambiguously described by a (mode, code)
201 : pair and mapped to a single optab." */
202 : extern rtx expand_simple_binop (machine_mode, enum rtx_code, rtx,
203 : rtx, rtx, int, enum optab_methods);
204 :
205 : /* Expand a binary operation given optab and rtx operands. */
206 : extern rtx expand_binop (machine_mode, optab, rtx, rtx, rtx, int,
207 : enum optab_methods);
208 :
209 : /* Expand a binary operation with both signed and unsigned forms. */
210 : extern rtx sign_expand_binop (machine_mode, optab, optab, rtx, rtx,
211 : rtx, int, enum optab_methods);
212 :
213 : /* Generate code to perform an operation on one operand with two results. */
214 : extern bool expand_twoval_unop (optab, rtx, rtx, rtx, int);
215 :
216 : /* Generate code to perform an operation on two operands with two results. */
217 : extern bool expand_twoval_binop (optab, rtx, rtx, rtx, rtx, int);
218 :
219 : /* Generate code to perform an operation on two operands with two
220 : results, using a library function. */
221 : extern bool expand_twoval_binop_libfunc (optab, rtx, rtx, rtx, rtx,
222 : enum rtx_code);
223 : extern rtx expand_simple_unop (machine_mode, enum rtx_code, rtx, rtx,
224 : int);
225 :
226 : /* Expand a unary arithmetic operation given optab rtx operand. */
227 : extern rtx expand_unop (machine_mode, optab, rtx, rtx, int);
228 :
229 : /* Expand the absolute value operation. */
230 : extern rtx expand_abs_nojump (machine_mode, rtx, rtx, int);
231 : extern rtx expand_abs (machine_mode, rtx, rtx, int, int);
232 :
233 : /* Expand the one's complement absolute value operation. */
234 : extern rtx expand_one_cmpl_abs_nojump (machine_mode, rtx, rtx);
235 :
236 : /* Expand the copysign operation. */
237 : extern rtx expand_copysign (rtx, rtx, rtx);
238 : /* Generate an instruction with a given INSN_CODE with an output and
239 : an input. */
240 : extern bool maybe_emit_unop_insn (enum insn_code, rtx, rtx, enum rtx_code);
241 : extern void emit_unop_insn (enum insn_code, rtx, rtx, enum rtx_code);
242 :
243 : /* Emit code to make a call to a constant function or a library call. */
244 : extern void emit_libcall_block (rtx_insn *, rtx, rtx, rtx);
245 :
246 : /* The various uses that a comparison can have; used by can_compare_p:
247 : jumps, store flag operations. */
248 : enum can_compare_purpose
249 : {
250 : ccp_jump,
251 : ccp_store_flag
252 : };
253 :
254 : /* Nonzero if a compare of mode MODE can be done straightforwardly
255 : (without splitting it into pieces). */
256 : extern bool can_compare_p (enum rtx_code, machine_mode,
257 : enum can_compare_purpose);
258 :
259 : /* Return whether the backend can emit a vector comparison (vec_cmp/vec_cmpu)
260 : for code CODE, comparing operands of mode VALUE_MODE and producing a result
261 : with MASK_MODE. */
262 : extern bool can_vec_cmp_compare_p (enum rtx_code, machine_mode, machine_mode);
263 :
264 : /* Return whether the backend can emit vector set instructions for inserting
265 : element into vector at variable index position. */
266 : extern bool can_vec_set_var_idx_p (machine_mode);
267 : extern bool can_vec_extract_var_idx_p (machine_mode, machine_mode);
268 :
269 : extern rtx prepare_operand (enum insn_code, rtx, int, machine_mode,
270 : machine_mode, int);
271 : /* Emit a pair of rtl insns to compare two rtx's and to jump
272 : to a label if the comparison is true. */
273 : extern void emit_cmp_and_jump_insns (rtx, rtx, enum rtx_code, rtx,
274 : machine_mode, int, rtx,
275 : profile_probability prob
276 : = profile_probability::uninitialized ());
277 : extern void emit_cmp_and_jump_insns (rtx, rtx, enum rtx_code, rtx,
278 : machine_mode, int, tree, rtx,
279 : profile_probability prob
280 : = profile_probability::uninitialized ());
281 :
282 : /* Generate code to indirectly jump to a location given in the rtx LOC. */
283 : extern void emit_indirect_jump (rtx);
284 :
285 : #include "insn-config.h"
286 :
287 : #ifndef GCC_INSN_CONFIG_H
288 : #error "insn-config.h must be included before optabs.h"
289 : #endif
290 :
291 : /* Emit a conditional move operation. */
292 : rtx emit_conditional_move (rtx, rtx_comparison, rtx, rtx, machine_mode, int);
293 : rtx emit_conditional_move (rtx, rtx, rtx, rtx, rtx, machine_mode);
294 :
295 : /* Emit a conditional negate or bitwise complement operation. */
296 : rtx emit_conditional_neg_or_complement (rtx, rtx_code, machine_mode, rtx,
297 : rtx, rtx);
298 :
299 : rtx emit_conditional_add (rtx, enum rtx_code, rtx, rtx, machine_mode,
300 : rtx, rtx, machine_mode, int);
301 :
302 : /* Create but don't emit one rtl instruction to perform certain operations.
303 : Modes must match; operands must meet the operation's predicates.
304 : Likewise for subtraction and for just copying. */
305 : extern rtx_insn *gen_add2_insn (rtx, rtx);
306 : extern rtx_insn *gen_add3_insn (rtx, rtx, rtx);
307 : extern bool have_add2_insn (rtx, rtx);
308 : extern rtx_insn *gen_addptr3_insn (rtx, rtx, rtx);
309 : extern bool have_addptr3_insn (rtx, rtx, rtx);
310 : extern rtx_insn *gen_sub2_insn (rtx, rtx);
311 : extern rtx_insn *gen_sub3_insn (rtx, rtx, rtx);
312 : extern bool have_sub2_insn (rtx, rtx);
313 :
314 : /* Generate the body of an insn to extend Y (with mode MFROM)
315 : into X (with mode MTO). Do zero-extension if UNSIGNEDP is nonzero. */
316 : extern rtx_insn *gen_extend_insn (rtx, rtx, machine_mode, machine_mode, int);
317 :
318 : /* Generate code for a FLOAT_EXPR. */
319 : extern void expand_float (rtx, rtx, int);
320 :
321 : /* Generate code for a FIX_EXPR. */
322 : extern void expand_fix (rtx, rtx, int);
323 :
324 : /* Generate code for a FIXED_CONVERT_EXPR. */
325 : extern void expand_fixed_convert (rtx, rtx, int, int);
326 :
327 : /* Generate code for float to integral conversion. */
328 : extern bool expand_sfix_optab (rtx, rtx, convert_optab);
329 :
330 : /* Report whether the machine description contains an insn which can
331 : perform the operation described by CODE and MODE. */
332 : extern bool have_insn_for (enum rtx_code, machine_mode);
333 :
334 : /* Generate a conditional trap instruction. */
335 : extern rtx_insn *gen_cond_trap (enum rtx_code, rtx, rtx, rtx);
336 :
337 : /* Check whether the vec_perm can be interpreted as an and operation. */
338 : extern rtx vec_perm_and_mask (machine_mode mode, const vec_perm_indices &sel,
339 : bool zero_op0_p);
340 :
341 : /* Generate code for VEC_PERM_EXPR. */
342 : extern rtx expand_vec_perm_var (machine_mode, rtx, rtx, rtx, rtx);
343 : extern rtx expand_vec_perm_const (machine_mode, rtx, rtx,
344 : const vec_perm_builder &, machine_mode, rtx);
345 :
346 : /* Generate code for vector comparison. */
347 : extern rtx expand_vec_cmp_expr (tree, tree, rtx);
348 :
349 : /* Generate code for VEC_SERIES_EXPR. */
350 : extern rtx expand_vec_series_expr (machine_mode, rtx, rtx, rtx);
351 :
352 : /* Generate code for MULT_HIGHPART_EXPR. */
353 : extern rtx expand_mult_highpart (machine_mode, rtx, rtx, rtx, bool);
354 :
355 : extern rtx expand_sync_lock_test_and_set (rtx, rtx, rtx);
356 : extern rtx expand_atomic_test_and_set (rtx, rtx, enum memmodel);
357 : extern rtx expand_atomic_exchange (rtx, rtx, rtx, enum memmodel);
358 : extern bool expand_atomic_compare_and_swap (rtx *, rtx *, rtx, rtx, rtx, bool,
359 : enum memmodel, enum memmodel);
360 : /* Generate memory barriers. */
361 : extern void expand_mem_thread_fence (enum memmodel);
362 : extern void expand_mem_signal_fence (enum memmodel);
363 :
364 : rtx expand_atomic_load (rtx, rtx, enum memmodel);
365 : rtx expand_atomic_store (rtx, rtx, enum memmodel, bool);
366 : rtx expand_atomic_fetch_op (rtx, rtx, rtx, enum rtx_code, enum memmodel,
367 : bool);
368 :
369 : extern void expand_asm_reg_clobber_mem_blockage (HARD_REG_SET);
370 :
371 : extern bool insn_operand_matches (enum insn_code icode, unsigned int opno,
372 : rtx operand);
373 : extern bool valid_multiword_target_p (rtx);
374 : extern void create_convert_operand_from_type (class expand_operand *op,
375 : rtx value, tree type);
376 : extern bool maybe_legitimize_operands (enum insn_code icode,
377 : unsigned int opno, unsigned int nops,
378 : class expand_operand *ops);
379 : extern rtx_insn *maybe_gen_insn (enum insn_code icode, unsigned int nops,
380 : class expand_operand *ops);
381 : extern bool maybe_expand_insn (enum insn_code icode, unsigned int nops,
382 : class expand_operand *ops);
383 : extern bool maybe_expand_jump_insn (enum insn_code icode, unsigned int nops,
384 : class expand_operand *ops);
385 : extern void expand_insn (enum insn_code icode, unsigned int nops,
386 : class expand_operand *ops);
387 : extern void expand_jump_insn (enum insn_code icode, unsigned int nops,
388 : class expand_operand *ops);
389 :
390 : extern enum rtx_code get_rtx_code_1 (enum tree_code tcode, bool unsignedp);
391 : extern enum rtx_code get_rtx_code (enum tree_code tcode, bool unsignedp);
392 : extern rtx vector_compare_rtx (machine_mode cmp_mode, enum tree_code tcode,
393 : tree t_op0, tree t_op1, bool unsignedp,
394 : enum insn_code icode, unsigned int opno);
395 :
396 :
397 : #endif /* GCC_OPTABS_H */
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