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e78d8e51 | 1 | /* Definitions for code generation pass of GNU compiler. |
a5544970 | 2 | Copyright (C) 2001-2019 Free Software Foundation, Inc. |
e78d8e51 | 3 | |
40803cd5 | 4 | This file is part of GCC. |
e78d8e51 | 5 | |
40803cd5 | 6 | GCC is free software; you can redistribute it and/or modify |
e78d8e51 | 7 | it under the terms of the GNU General Public License as published by |
9dcd6f09 | 8 | the Free Software Foundation; either version 3, or (at your option) |
e78d8e51 ZW |
9 | any later version. |
10 | ||
40803cd5 | 11 | GCC is distributed in the hope that it will be useful, |
e78d8e51 ZW |
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 | |
9dcd6f09 NC |
17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ | |
e78d8e51 ZW |
19 | |
20 | #ifndef GCC_OPTABS_H | |
21 | #define GCC_OPTABS_H | |
22 | ||
385399a8 RS |
23 | #include "optabs-query.h" |
24 | #include "optabs-libfuncs.h" | |
f151c9e1 | 25 | #include "vec-perm-indices.h" |
e78d8e51 | 26 | |
b99279f3 | 27 | /* Generate code for a widening multiply. */ |
ef4bddc2 | 28 | extern rtx expand_widening_mult (machine_mode, rtx, rtx, rtx, int, optab); |
b99279f3 | 29 | |
a5c7d693 RS |
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 | }; | |
42 | ||
43 | /* Information about an operand for instruction expansion. */ | |
44 | struct expand_operand { | |
45 | /* The type of operand. */ | |
46 | ENUM_BITFIELD (expand_operand_type) type : 8; | |
47 | ||
48 | /* True if any conversion should treat VALUE as being unsigned | |
49 | rather than signed. Only meaningful for certain types. */ | |
50 | unsigned int unsigned_p : 1; | |
51 | ||
f96bf49a JW |
52 | /* Is the target operand. */ |
53 | unsigned int target : 1; | |
54 | ||
a5c7d693 | 55 | /* Unused; available for future use. */ |
f96bf49a | 56 | unsigned int unused : 6; |
a5c7d693 RS |
57 | |
58 | /* The mode passed to the convert_*_operand function. It has a | |
59 | type-dependent meaning. */ | |
60 | ENUM_BITFIELD (machine_mode) mode : 16; | |
61 | ||
62 | /* The value of the operand. */ | |
63 | rtx value; | |
f8832fe1 RS |
64 | |
65 | /* The value of an EXPAND_INTEGER operand. */ | |
66 | poly_int64 int_value; | |
a5c7d693 RS |
67 | }; |
68 | ||
69 | /* Initialize OP with the given fields. Initialise the other fields | |
70 | to their default values. */ | |
71 | ||
72 | static inline void | |
73 | create_expand_operand (struct expand_operand *op, | |
74 | enum expand_operand_type type, | |
ef4bddc2 | 75 | rtx value, machine_mode mode, |
f8832fe1 | 76 | bool unsigned_p, poly_int64 int_value = 0) |
a5c7d693 RS |
77 | { |
78 | op->type = type; | |
79 | op->unsigned_p = unsigned_p; | |
80 | op->unused = 0; | |
81 | op->mode = mode; | |
82 | op->value = value; | |
f8832fe1 | 83 | op->int_value = int_value; |
a5c7d693 RS |
84 | } |
85 | ||
86 | /* Make OP describe an operand that must use rtx X, even if X is volatile. */ | |
87 | ||
88 | static inline void | |
89 | create_fixed_operand (struct expand_operand *op, rtx x) | |
90 | { | |
91 | create_expand_operand (op, EXPAND_FIXED, x, VOIDmode, false); | |
92 | } | |
93 | ||
94 | /* Make OP describe an output operand that must have mode MODE. | |
95 | X, if nonnull, is a suggestion for where the output should be stored. | |
96 | It is OK for VALUE to be inconsistent with MODE, although it will just | |
97 | be ignored in that case. */ | |
98 | ||
99 | static inline void | |
100 | create_output_operand (struct expand_operand *op, rtx x, | |
ef4bddc2 | 101 | machine_mode mode) |
a5c7d693 RS |
102 | { |
103 | create_expand_operand (op, EXPAND_OUTPUT, x, mode, false); | |
104 | } | |
105 | ||
106 | /* Make OP describe an input operand that must have mode MODE and | |
107 | value VALUE; MODE cannot be VOIDmode. The backend may request that | |
108 | VALUE be copied into a different kind of rtx before being passed | |
109 | as an operand. */ | |
110 | ||
111 | static inline void | |
112 | create_input_operand (struct expand_operand *op, rtx value, | |
ef4bddc2 | 113 | machine_mode mode) |
a5c7d693 RS |
114 | { |
115 | create_expand_operand (op, EXPAND_INPUT, value, mode, false); | |
116 | } | |
117 | ||
118 | /* Like create_input_operand, except that VALUE must first be converted | |
119 | to mode MODE. UNSIGNED_P says whether VALUE is unsigned. */ | |
120 | ||
121 | static inline void | |
122 | create_convert_operand_to (struct expand_operand *op, rtx value, | |
ef4bddc2 | 123 | machine_mode mode, bool unsigned_p) |
a5c7d693 RS |
124 | { |
125 | create_expand_operand (op, EXPAND_CONVERT_TO, value, mode, unsigned_p); | |
126 | } | |
127 | ||
128 | /* Make OP describe an input operand that should have the same value | |
129 | as VALUE, after any mode conversion that the backend might request. | |
130 | If VALUE is a CONST_INT, it should be treated as having mode MODE. | |
131 | UNSIGNED_P says whether VALUE is unsigned. */ | |
132 | ||
133 | static inline void | |
134 | create_convert_operand_from (struct expand_operand *op, rtx value, | |
ef4bddc2 | 135 | machine_mode mode, bool unsigned_p) |
a5c7d693 RS |
136 | { |
137 | create_expand_operand (op, EXPAND_CONVERT_FROM, value, mode, unsigned_p); | |
138 | } | |
139 | ||
a5c7d693 RS |
140 | |
141 | /* Make OP describe an input Pmode address operand. VALUE is the value | |
142 | of the address, but it may need to be converted to Pmode first. */ | |
143 | ||
144 | static inline void | |
145 | create_address_operand (struct expand_operand *op, rtx value) | |
146 | { | |
147 | create_expand_operand (op, EXPAND_ADDRESS, value, Pmode, false); | |
148 | } | |
149 | ||
f8832fe1 | 150 | extern void create_integer_operand (struct expand_operand *, poly_int64); |
02972eaf | 151 | |
b0710fe1 AM |
152 | /* Passed to expand_simple_binop and expand_binop to say which options |
153 | to try to use if the requested operation can't be open-coded on the | |
154 | requisite mode. Either OPTAB_LIB or OPTAB_LIB_WIDEN says try using | |
155 | a library call. Either OPTAB_WIDEN or OPTAB_LIB_WIDEN says try | |
156 | using a wider mode. OPTAB_MUST_WIDEN says try widening and don't | |
157 | try anything else. */ | |
158 | ||
159 | enum optab_methods | |
160 | { | |
161 | OPTAB_DIRECT, | |
162 | OPTAB_LIB, | |
163 | OPTAB_WIDEN, | |
164 | OPTAB_LIB_WIDEN, | |
165 | OPTAB_MUST_WIDEN | |
166 | }; | |
167 | ||
b0710fe1 AM |
168 | extern rtx expand_widen_pattern_expr (struct separate_ops *, rtx , rtx , rtx, |
169 | rtx, int); | |
170 | extern rtx expand_ternary_op (machine_mode mode, optab ternary_optab, | |
171 | rtx op0, rtx op1, rtx op2, rtx target, | |
172 | int unsignedp); | |
173 | extern rtx simplify_expand_binop (machine_mode mode, optab binoptab, | |
174 | rtx op0, rtx op1, rtx target, int unsignedp, | |
175 | enum optab_methods methods); | |
176 | extern bool force_expand_binop (machine_mode, optab, rtx, rtx, rtx, int, | |
177 | enum optab_methods); | |
be4c1d4a | 178 | extern rtx expand_vector_broadcast (machine_mode, rtx); |
b0710fe1 AM |
179 | |
180 | /* Generate code for a simple binary or unary operation. "Simple" in | |
181 | this case means "can be unambiguously described by a (mode, code) | |
182 | pair and mapped to a single optab." */ | |
183 | extern rtx expand_simple_binop (machine_mode, enum rtx_code, rtx, | |
184 | rtx, rtx, int, enum optab_methods); | |
185 | ||
186 | /* Expand a binary operation given optab and rtx operands. */ | |
187 | extern rtx expand_binop (machine_mode, optab, rtx, rtx, rtx, int, | |
188 | enum optab_methods); | |
a5c7d693 | 189 | |
b0710fe1 AM |
190 | /* Expand a binary operation with both signed and unsigned forms. */ |
191 | extern rtx sign_expand_binop (machine_mode, optab, optab, rtx, rtx, | |
192 | rtx, int, enum optab_methods); | |
193 | ||
194 | /* Generate code to perform an operation on one operand with two results. */ | |
195 | extern int expand_twoval_unop (optab, rtx, rtx, rtx, int); | |
196 | ||
197 | /* Generate code to perform an operation on two operands with two results. */ | |
198 | extern int expand_twoval_binop (optab, rtx, rtx, rtx, rtx, int); | |
199 | ||
200 | /* Generate code to perform an operation on two operands with two | |
201 | results, using a library function. */ | |
202 | extern bool expand_twoval_binop_libfunc (optab, rtx, rtx, rtx, rtx, | |
203 | enum rtx_code); | |
204 | extern rtx expand_simple_unop (machine_mode, enum rtx_code, rtx, rtx, | |
205 | int); | |
206 | ||
207 | /* Expand a unary arithmetic operation given optab rtx operand. */ | |
208 | extern rtx expand_unop (machine_mode, optab, rtx, rtx, int); | |
209 | ||
210 | /* Expand the absolute value operation. */ | |
211 | extern rtx expand_abs_nojump (machine_mode, rtx, rtx, int); | |
212 | extern rtx expand_abs (machine_mode, rtx, rtx, int, int); | |
213 | ||
214 | /* Expand the one's complement absolute value operation. */ | |
215 | extern rtx expand_one_cmpl_abs_nojump (machine_mode, rtx, rtx); | |
216 | ||
217 | /* Expand the copysign operation. */ | |
218 | extern rtx expand_copysign (rtx, rtx, rtx); | |
219 | /* Generate an instruction with a given INSN_CODE with an output and | |
220 | an input. */ | |
221 | extern bool maybe_emit_unop_insn (enum insn_code, rtx, rtx, enum rtx_code); | |
222 | extern void emit_unop_insn (enum insn_code, rtx, rtx, enum rtx_code); | |
223 | ||
224 | /* Emit code to make a call to a constant function or a library call. */ | |
f087c773 | 225 | extern void emit_libcall_block (rtx_insn *, rtx, rtx, rtx); |
b0710fe1 AM |
226 | |
227 | /* The various uses that a comparison can have; used by can_compare_p: | |
228 | jumps, conditional moves, store flag operations. */ | |
229 | enum can_compare_purpose | |
230 | { | |
231 | ccp_jump, | |
232 | ccp_cmov, | |
233 | ccp_store_flag | |
234 | }; | |
235 | ||
236 | /* Nonzero if a compare of mode MODE can be done straightforwardly | |
237 | (without splitting it into pieces). */ | |
238 | extern int can_compare_p (enum rtx_code, machine_mode, | |
239 | enum can_compare_purpose); | |
ef4bddc2 RS |
240 | extern rtx prepare_operand (enum insn_code, rtx, int, machine_mode, |
241 | machine_mode, int); | |
b0710fe1 AM |
242 | /* Emit a pair of rtl insns to compare two rtx's and to jump |
243 | to a label if the comparison is true. */ | |
244 | extern void emit_cmp_and_jump_insns (rtx, rtx, enum rtx_code, rtx, | |
357067f2 JH |
245 | machine_mode, int, rtx, |
246 | profile_probability prob | |
247 | = profile_probability::uninitialized ()); | |
b0710fe1 AM |
248 | |
249 | /* Generate code to indirectly jump to a location given in the rtx LOC. */ | |
250 | extern void emit_indirect_jump (rtx); | |
251 | ||
252 | #include "insn-config.h" | |
253 | ||
254 | #ifndef GCC_INSN_CONFIG_H | |
255 | #error "insn-config.h must be included before optabs.h" | |
256 | #endif | |
257 | ||
b0710fe1 AM |
258 | /* Emit a conditional move operation. */ |
259 | rtx emit_conditional_move (rtx, enum rtx_code, rtx, rtx, machine_mode, | |
260 | rtx, rtx, machine_mode, int); | |
261 | ||
ce68b5cf KT |
262 | /* Emit a conditional negate or bitwise complement operation. */ |
263 | rtx emit_conditional_neg_or_complement (rtx, rtx_code, machine_mode, rtx, | |
264 | rtx, rtx); | |
265 | ||
b0710fe1 AM |
266 | rtx emit_conditional_add (rtx, enum rtx_code, rtx, rtx, machine_mode, |
267 | rtx, rtx, machine_mode, int); | |
268 | ||
269 | /* Create but don't emit one rtl instruction to perform certain operations. | |
270 | Modes must match; operands must meet the operation's predicates. | |
271 | Likewise for subtraction and for just copying. */ | |
e67d1102 RS |
272 | extern rtx_insn *gen_add2_insn (rtx, rtx); |
273 | extern rtx_insn *gen_add3_insn (rtx, rtx, rtx); | |
b0710fe1 | 274 | extern int have_add2_insn (rtx, rtx); |
e67d1102 | 275 | extern rtx_insn *gen_addptr3_insn (rtx, rtx, rtx); |
b0710fe1 | 276 | extern int have_addptr3_insn (rtx, rtx, rtx); |
e67d1102 RS |
277 | extern rtx_insn *gen_sub2_insn (rtx, rtx); |
278 | extern rtx_insn *gen_sub3_insn (rtx, rtx, rtx); | |
b0710fe1 AM |
279 | extern int have_sub2_insn (rtx, rtx); |
280 | ||
b0710fe1 AM |
281 | /* Generate the body of an insn to extend Y (with mode MFROM) |
282 | into X (with mode MTO). Do zero-extension if UNSIGNEDP is nonzero. */ | |
e67d1102 | 283 | extern rtx_insn *gen_extend_insn (rtx, rtx, machine_mode, machine_mode, int); |
b0710fe1 | 284 | |
b0710fe1 AM |
285 | /* Generate code for a FLOAT_EXPR. */ |
286 | extern void expand_float (rtx, rtx, int); | |
287 | ||
288 | /* Generate code for a FIX_EXPR. */ | |
289 | extern void expand_fix (rtx, rtx, int); | |
290 | ||
291 | /* Generate code for a FIXED_CONVERT_EXPR. */ | |
292 | extern void expand_fixed_convert (rtx, rtx, int, int); | |
293 | ||
294 | /* Generate code for float to integral conversion. */ | |
295 | extern bool expand_sfix_optab (rtx, rtx, convert_optab); | |
296 | ||
297 | /* Report whether the machine description contains an insn which can | |
298 | perform the operation described by CODE and MODE. */ | |
299 | extern int have_insn_for (enum rtx_code, machine_mode); | |
2ef6ce06 | 300 | |
b0710fe1 | 301 | /* Generate a conditional trap instruction. */ |
e67d1102 | 302 | extern rtx_insn *gen_cond_trap (enum rtx_code, rtx, rtx, rtx); |
b0710fe1 | 303 | |
b0710fe1 | 304 | /* Generate code for VEC_PERM_EXPR. */ |
f151c9e1 RS |
305 | extern rtx expand_vec_perm_var (machine_mode, rtx, rtx, rtx, rtx); |
306 | extern rtx expand_vec_perm_const (machine_mode, rtx, rtx, | |
307 | const vec_perm_builder &, machine_mode, rtx); | |
b0710fe1 | 308 | |
42fd8198 IE |
309 | /* Generate code for vector comparison. */ |
310 | extern rtx expand_vec_cmp_expr (tree, tree, rtx); | |
311 | ||
b0710fe1 AM |
312 | /* Generate code for VEC_COND_EXPR. */ |
313 | extern rtx expand_vec_cond_expr (tree, tree, tree, tree, rtx); | |
314 | ||
9adab579 RS |
315 | /* Generate code for VEC_SERIES_EXPR. */ |
316 | extern rtx expand_vec_series_expr (machine_mode, rtx, rtx, rtx); | |
317 | ||
b0710fe1 AM |
318 | /* Generate code for MULT_HIGHPART_EXPR. */ |
319 | extern rtx expand_mult_highpart (machine_mode, rtx, rtx, rtx, bool); | |
320 | ||
b0710fe1 AM |
321 | extern rtx expand_sync_lock_test_and_set (rtx, rtx, rtx); |
322 | extern rtx expand_atomic_test_and_set (rtx, rtx, enum memmodel); | |
323 | extern rtx expand_atomic_exchange (rtx, rtx, rtx, enum memmodel); | |
324 | extern bool expand_atomic_compare_and_swap (rtx *, rtx *, rtx, rtx, rtx, bool, | |
325 | enum memmodel, enum memmodel); | |
326 | /* Generate memory barriers. */ | |
327 | extern void expand_mem_thread_fence (enum memmodel); | |
328 | extern void expand_mem_signal_fence (enum memmodel); | |
329 | ||
330 | rtx expand_atomic_load (rtx, rtx, enum memmodel); | |
331 | rtx expand_atomic_store (rtx, rtx, enum memmodel, bool); | |
332 | rtx expand_atomic_fetch_op (rtx, rtx, rtx, enum rtx_code, enum memmodel, | |
333 | bool); | |
334 | ||
335 | extern bool insn_operand_matches (enum insn_code icode, unsigned int opno, | |
336 | rtx operand); | |
337 | extern bool valid_multiword_target_p (rtx); | |
338 | extern void create_convert_operand_from_type (struct expand_operand *op, | |
339 | rtx value, tree type); | |
340 | extern bool maybe_legitimize_operands (enum insn_code icode, | |
341 | unsigned int opno, unsigned int nops, | |
342 | struct expand_operand *ops); | |
1476d1bd MM |
343 | extern rtx_insn *maybe_gen_insn (enum insn_code icode, unsigned int nops, |
344 | struct expand_operand *ops); | |
b0710fe1 AM |
345 | extern bool maybe_expand_insn (enum insn_code icode, unsigned int nops, |
346 | struct expand_operand *ops); | |
347 | extern bool maybe_expand_jump_insn (enum insn_code icode, unsigned int nops, | |
348 | struct expand_operand *ops); | |
349 | extern void expand_insn (enum insn_code icode, unsigned int nops, | |
350 | struct expand_operand *ops); | |
351 | extern void expand_jump_insn (enum insn_code icode, unsigned int nops, | |
352 | struct expand_operand *ops); | |
353 | ||
2d52a3a1 ZC |
354 | extern enum rtx_code get_rtx_code (enum tree_code tcode, bool unsignedp); |
355 | ||
e78d8e51 | 356 | #endif /* GCC_OPTABS_H */ |