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1 | ;; Constraint definitions for ARM and Thumb | |
2 | ;; Copyright (C) 2006-2021 Free Software Foundation, Inc. | |
3 | ;; Contributed by ARM Ltd. | |
4 | ||
5 | ;; This file is part of GCC. | |
6 | ||
7 | ;; GCC is free software; you can redistribute it and/or modify it | |
8 | ;; under the terms of the GNU General Public License as published | |
9 | ;; by the Free Software Foundation; either version 3, or (at your | |
10 | ;; option) any later version. | |
11 | ||
12 | ;; GCC is distributed in the hope that it will be useful, but WITHOUT | |
13 | ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
14 | ;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
15 | ;; License for more details. | |
16 | ||
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/>. | |
20 | ||
21 | ;; The following register constraints have been used: | |
22 | ;; - in ARM/Thumb-2 state: t, w, x, y, z | |
23 | ;; - in Thumb state: h, b | |
24 | ;; - in both states: l, c, k, q, Cs, Ts, US | |
25 | ;; In ARM state, 'l' is an alias for 'r' | |
26 | ;; 'f' and 'v' were previously used for FPA and MAVERICK registers. | |
27 | ||
28 | ;; The following normal constraints have been used: | |
29 | ;; in ARM/Thumb-2 state: G, I, j, J, K, L, M | |
30 | ;; in Thumb-1 state: I, J, K, L, M, N, O | |
31 | ;; 'H' was previously used for FPA. | |
32 | ||
33 | ;; The following multi-letter normal constraints have been used: | |
34 | ;; in ARM/Thumb-2 state: Da, Db, Dc, Dd, Dn, DN, Dm, Dl, DL, Do, Dv, Dy, Di, | |
35 | ;; Dt, Dp, Dz, Tu, Te | |
36 | ;; in Thumb-1 state: Pa, Pb, Pc, Pd, Pe | |
37 | ;; in Thumb-2 state: Ha, Pj, PJ, Ps, Pt, Pu, Pv, Pw, Px, Py, Pz, Rd, Rf, Rb, Ra, | |
38 | ;; Rg, Ri | |
39 | ;; in all states: Pf, Pg | |
40 | ||
41 | ;; The following memory constraints have been used: | |
42 | ;; in ARM/Thumb-2 state: Uh, Ut, Uv, Uy, Un, Um, Us, Up, Uf, Ux, Ul | |
43 | ;; in ARM state: Uq | |
44 | ;; in Thumb state: Uu, Uw | |
45 | ;; in all states: Q | |
46 | ||
47 | (define_register_constraint "Up" "TARGET_HAVE_MVE ? VPR_REG : NO_REGS" | |
48 | "MVE VPR register") | |
49 | ||
50 | (define_memory_constraint "Ul" | |
51 | "@internal | |
52 | In ARM/Thumb-2 state a valid address for load instruction with XEXP (op, 0) | |
53 | being label of the literal data item to be loaded." | |
54 | (and (match_code "mem") | |
55 | (match_test "TARGET_HAVE_MVE && reload_completed | |
56 | && (GET_CODE (XEXP (op, 0)) == LABEL_REF | |
57 | || (GET_CODE (XEXP (op, 0)) == CONST | |
58 | && GET_CODE (XEXP (XEXP (op, 0), 0)) == PLUS | |
59 | && GET_CODE (XEXP (XEXP (XEXP (op, 0), 0), 0)) == LABEL_REF | |
60 | && CONST_INT_P (XEXP (XEXP (XEXP (op, 0), 0), 1))))"))) | |
61 | ||
62 | (define_register_constraint "Uf" "TARGET_HAVE_MVE ? VFPCC_REG : NO_REGS" | |
63 | "MVE FPCCR register") | |
64 | ||
65 | (define_register_constraint "Te" "TARGET_HAVE_MVE ? EVEN_REG : NO_REGS" | |
66 | "EVEN core registers @code{r0}, @code{r2}, @code{r4}, @code{r6}, @code{r8}, | |
67 | @code{r10}, @code{r12}, @code{r14}") | |
68 | ||
69 | (define_constraint "Rd" | |
70 | "@internal In Thumb-2 state a constant in range 1 to 16" | |
71 | (and (match_code "const_int") | |
72 | (match_test "TARGET_HAVE_MVE && ival >= 1 && ival <= 16"))) | |
73 | ||
74 | (define_constraint "Ra" | |
75 | "@internal In Thumb-2 state a constant in range 0 to 7" | |
76 | (and (match_code "const_int") | |
77 | (match_test "TARGET_HAVE_MVE && ival >= 0 && ival <= 7"))) | |
78 | ||
79 | (define_constraint "Rb" | |
80 | "@internal In Thumb-2 state a constant in range 1 to 8" | |
81 | (and (match_code "const_int") | |
82 | (match_test "TARGET_HAVE_MVE && ival >= 1 && ival <= 8"))) | |
83 | ||
84 | (define_constraint "Rc" | |
85 | "@internal In Thumb-2 state a constant in range 0 to 15" | |
86 | (and (match_code "const_int") | |
87 | (match_test "TARGET_HAVE_MVE && ival >= 0 && ival <= 15"))) | |
88 | ||
89 | (define_constraint "Re" | |
90 | "@internal In Thumb-2 state a constant in range 0 to 31" | |
91 | (and (match_code "const_int") | |
92 | (match_test "TARGET_HAVE_MVE && ival >= 0 && ival <= 31"))) | |
93 | ||
94 | (define_constraint "Rf" | |
95 | "@internal In Thumb-2 state a constant in range 1 to 32" | |
96 | (and (match_code "const_int") | |
97 | (match_test "TARGET_HAVE_MVE && ival >= 1 && ival <= 32"))) | |
98 | ||
99 | (define_constraint "Rg" | |
100 | "@internal In Thumb-2 state a constant is one among 1, 2, 4 and 8" | |
101 | (and (match_code "const_int") | |
102 | (match_test "TARGET_HAVE_MVE && ((ival == 1) || (ival == 2) | |
103 | || (ival == 4) || (ival == 8))"))) | |
104 | ||
105 | ;; True if the immediate is multiple of 8 and in range of -/+ 1016 for MVE. | |
106 | (define_predicate "mve_vldrd_immediate" | |
107 | (match_test "satisfies_constraint_Ri (op)")) | |
108 | ||
109 | (define_register_constraint "t" "TARGET_32BIT ? VFP_LO_REGS : NO_REGS" | |
110 | "The VFP registers @code{s0}-@code{s31}.") | |
111 | ||
112 | (define_register_constraint "w" | |
113 | "TARGET_32BIT ? (TARGET_VFPD32 ? VFP_REGS : VFP_LO_REGS) : NO_REGS" | |
114 | "The VFP registers @code{d0}-@code{d15}, or @code{d0}-@code{d31} for VFPv3.") | |
115 | ||
116 | (define_register_constraint "x" "TARGET_32BIT ? VFP_D0_D7_REGS : NO_REGS" | |
117 | "The VFP registers @code{d0}-@code{d7}.") | |
118 | ||
119 | (define_register_constraint "y" "TARGET_REALLY_IWMMXT ? IWMMXT_REGS : NO_REGS" | |
120 | "The Intel iWMMX co-processor registers.") | |
121 | ||
122 | (define_register_constraint "z" | |
123 | "TARGET_REALLY_IWMMXT ? IWMMXT_GR_REGS : NO_REGS" | |
124 | "The Intel iWMMX GR registers.") | |
125 | ||
126 | (define_register_constraint "l" "TARGET_THUMB ? LO_REGS : GENERAL_REGS" | |
127 | "In Thumb state the core registers @code{r0}-@code{r7}.") | |
128 | ||
129 | (define_register_constraint "h" "TARGET_THUMB ? HI_REGS : NO_REGS" | |
130 | "In Thumb state the core registers @code{r8}-@code{r15}.") | |
131 | ||
132 | (define_constraint "j" | |
133 | "A constant suitable for a MOVW instruction. (ARM/Thumb-2)" | |
134 | (and (match_test "TARGET_HAVE_MOVT") | |
135 | (ior (and (match_code "high") | |
136 | (match_test "arm_valid_symbolic_address_p (XEXP (op, 0))")) | |
137 | (and (match_code "const_int") | |
138 | (match_test "(ival & 0xffff0000) == 0"))))) | |
139 | ||
140 | (define_constraint "Pj" | |
141 | "@internal A 12-bit constant suitable for an ADDW or SUBW instruction. (Thumb-2)" | |
142 | (and (match_code "const_int") | |
143 | (and (match_test "TARGET_THUMB2") | |
144 | (match_test "(ival & 0xfffff000) == 0")))) | |
145 | ||
146 | (define_constraint "PJ" | |
147 | "@internal A constant that satisfies the Pj constrant if negated." | |
148 | (and (match_code "const_int") | |
149 | (and (match_test "TARGET_THUMB2") | |
150 | (match_test "((-ival) & 0xfffff000) == 0")))) | |
151 | ||
152 | (define_register_constraint "k" "STACK_REG" | |
153 | "@internal The stack register.") | |
154 | ||
155 | (define_register_constraint "b" "TARGET_THUMB ? BASE_REGS : NO_REGS" | |
156 | "@internal | |
157 | Thumb only. The union of the low registers and the stack register.") | |
158 | ||
159 | (define_constraint "c" | |
160 | "@internal The condition code register." | |
161 | (match_operand 0 "cc_register")) | |
162 | ||
163 | (define_register_constraint "Cs" "CALLER_SAVE_REGS" | |
164 | "@internal The caller save registers. Useful for sibcalls.") | |
165 | ||
166 | (define_constraint "I" | |
167 | "In ARM/Thumb-2 state a constant that can be used as an immediate value in a | |
168 | Data Processing instruction. In Thumb-1 state a constant in the range | |
169 | 0-255." | |
170 | (and (match_code "const_int") | |
171 | (match_test "TARGET_32BIT ? const_ok_for_arm (ival) | |
172 | : ival >= 0 && ival <= 255"))) | |
173 | ||
174 | (define_constraint "J" | |
175 | "In ARM/Thumb-2 state a constant in the range @minus{}4095-4095. In Thumb-1 | |
176 | state a constant in the range @minus{}255-@minus{}1." | |
177 | (and (match_code "const_int") | |
178 | (match_test "TARGET_32BIT ? (ival >= -4095 && ival <= 4095) | |
179 | : (ival >= -255 && ival <= -1)"))) | |
180 | ||
181 | (define_constraint "K" | |
182 | "In ARM/Thumb-2 state a constant that satisfies the @code{I} constraint if | |
183 | inverted. In Thumb-1 state a constant that satisfies the @code{I} | |
184 | constraint multiplied by any power of 2." | |
185 | (and (match_code "const_int") | |
186 | (match_test "TARGET_32BIT ? const_ok_for_arm (~ival) | |
187 | : thumb_shiftable_const (ival)"))) | |
188 | ||
189 | (define_constraint "L" | |
190 | "In ARM/Thumb-2 state a constant that satisfies the @code{I} constraint if | |
191 | negated. In Thumb-1 state a constant in the range @minus{}7-7." | |
192 | (and (match_code "const_int") | |
193 | (match_test "TARGET_32BIT ? const_ok_for_arm (-ival) | |
194 | : (ival >= -7 && ival <= 7)"))) | |
195 | ||
196 | ;; The ARM state version is internal... | |
197 | ;; @internal In ARM/Thumb-2 state a constant in the range 0-32 or any | |
198 | ;; power of 2. | |
199 | (define_constraint "M" | |
200 | "In Thumb-1 state a constant that is a multiple of 4 in the range 0-1020." | |
201 | (and (match_code "const_int") | |
202 | (match_test "TARGET_32BIT ? ((ival >= 0 && ival <= 32) | |
203 | || (((ival & (ival - 1)) & 0xFFFFFFFF) == 0)) | |
204 | : ival >= 0 && ival <= 1020 && (ival & 3) == 0"))) | |
205 | ||
206 | (define_constraint "N" | |
207 | "Thumb-1 state a constant in the range 0-31." | |
208 | (and (match_code "const_int") | |
209 | (match_test "!TARGET_32BIT && (ival >= 0 && ival <= 31)"))) | |
210 | ||
211 | (define_constraint "O" | |
212 | "In Thumb-1 state a constant that is a multiple of 4 in the range | |
213 | @minus{}508-508." | |
214 | (and (match_code "const_int") | |
215 | (match_test "TARGET_THUMB1 && ival >= -508 && ival <= 508 | |
216 | && ((ival & 3) == 0)"))) | |
217 | ||
218 | (define_constraint "Pa" | |
219 | "@internal In Thumb-1 state a constant in the range -510 to +510" | |
220 | (and (match_code "const_int") | |
221 | (match_test "TARGET_THUMB1 && ival >= -510 && ival <= 510 | |
222 | && (ival > 255 || ival < -255)"))) | |
223 | ||
224 | (define_constraint "Pb" | |
225 | "@internal In Thumb-1 state a constant in the range -262 to +262" | |
226 | (and (match_code "const_int") | |
227 | (match_test "TARGET_THUMB1 && ival >= -262 && ival <= 262 | |
228 | && (ival > 255 || ival < -255)"))) | |
229 | ||
230 | (define_constraint "Pc" | |
231 | "@internal In Thumb-1 state a constant that is in the range 1021 to 1275" | |
232 | (and (match_code "const_int") | |
233 | (match_test "TARGET_THUMB1 | |
234 | && ival > 1020 && ival <= 1275"))) | |
235 | ||
236 | (define_constraint "Pd" | |
237 | "@internal In Thumb state a constant in the range 0 to 7" | |
238 | (and (match_code "const_int") | |
239 | (match_test "TARGET_THUMB && ival >= 0 && ival <= 7"))) | |
240 | ||
241 | (define_constraint "Pe" | |
242 | "@internal In Thumb-1 state a constant in the range 256 to +510" | |
243 | (and (match_code "const_int") | |
244 | (match_test "TARGET_THUMB1 && ival >= 256 && ival <= 510"))) | |
245 | ||
246 | (define_constraint "Pf" | |
247 | "Memory models except relaxed, consume or release ones." | |
248 | (and (match_code "const_int") | |
249 | (match_test "!is_mm_relaxed (memmodel_from_int (ival)) | |
250 | && !is_mm_consume (memmodel_from_int (ival)) | |
251 | && !is_mm_release (memmodel_from_int (ival))"))) | |
252 | ||
253 | (define_constraint "Pg" | |
254 | "@internal In Thumb-2 state a constant in range 1 to 32" | |
255 | (and (match_code "const_int") | |
256 | (match_test "TARGET_THUMB2 && ival >= 1 && ival <= 32"))) | |
257 | ||
258 | (define_constraint "Ps" | |
259 | "@internal In Thumb-2 state a constant in the range -255 to +255" | |
260 | (and (match_code "const_int") | |
261 | (match_test "TARGET_THUMB2 && ival >= -255 && ival <= 255"))) | |
262 | ||
263 | (define_constraint "Pt" | |
264 | "@internal In Thumb-2 state a constant in the range -7 to +7" | |
265 | (and (match_code "const_int") | |
266 | (match_test "TARGET_THUMB2 && ival >= -7 && ival <= 7"))) | |
267 | ||
268 | (define_constraint "Pu" | |
269 | "@internal In Thumb-2 state a constant in the range +1 to +8" | |
270 | (and (match_code "const_int") | |
271 | (match_test "TARGET_THUMB2 && ival >= 1 && ival <= 8"))) | |
272 | ||
273 | (define_constraint "Pv" | |
274 | "@internal In Thumb-2 state a constant in the range -255 to 0" | |
275 | (and (match_code "const_int") | |
276 | (match_test "TARGET_THUMB2 && ival >= -255 && ival <= 0"))) | |
277 | ||
278 | (define_constraint "Pw" | |
279 | "@internal In Thumb-2 state a constant in the range -255 to -1" | |
280 | (and (match_code "const_int") | |
281 | (match_test "TARGET_THUMB2 && ival >= -255 && ival <= -1"))) | |
282 | ||
283 | (define_constraint "Px" | |
284 | "@internal In Thumb-2 state a constant in the range -7 to -1" | |
285 | (and (match_code "const_int") | |
286 | (match_test "TARGET_THUMB2 && ival >= -7 && ival <= -1"))) | |
287 | ||
288 | (define_constraint "Py" | |
289 | "@internal In Thumb-2 state a constant in the range 0 to 255" | |
290 | (and (match_code "const_int") | |
291 | (match_test "TARGET_THUMB2 && ival >= 0 && ival <= 255"))) | |
292 | ||
293 | (define_constraint "Pz" | |
294 | "@internal In Thumb-2 state the constant 0" | |
295 | (and (match_code "const_int") | |
296 | (match_test "TARGET_THUMB2 && (ival == 0)"))) | |
297 | ||
298 | (define_constraint "G" | |
299 | "In ARM/Thumb-2 state the floating-point constant 0." | |
300 | (and (match_code "const_double") | |
301 | (match_test "TARGET_32BIT && arm_const_double_rtx (op)"))) | |
302 | ||
303 | (define_constraint "Ha" | |
304 | "@internal In ARM / Thumb-2 a float constant iff literal pools are allowed." | |
305 | (and (match_code "const_double") | |
306 | (match_test "satisfies_constraint_E (op)") | |
307 | (match_test "!arm_disable_literal_pool"))) | |
308 | ||
309 | (define_constraint "Dz" | |
310 | "@internal | |
311 | In ARM/Thumb-2 state a vector of constant zeros." | |
312 | (and (match_code "const_vector") | |
313 | (match_test "(TARGET_NEON || TARGET_HAVE_MVE) && op == CONST0_RTX (mode)"))) | |
314 | ||
315 | (define_constraint "Da" | |
316 | "@internal | |
317 | In ARM/Thumb-2 state a const_int, const_double or const_vector that can | |
318 | be generated with two Data Processing insns." | |
319 | (and (match_code "const_double,const_int,const_vector") | |
320 | (match_test "TARGET_32BIT && arm_const_double_inline_cost (op) == 2"))) | |
321 | ||
322 | (define_constraint "Db" | |
323 | "@internal | |
324 | In ARM/Thumb-2 state a const_int, const_double or const_vector that can | |
325 | be generated with three Data Processing insns." | |
326 | (and (match_code "const_double,const_int,const_vector") | |
327 | (match_test "TARGET_32BIT && arm_const_double_inline_cost (op) == 3"))) | |
328 | ||
329 | (define_constraint "Dc" | |
330 | "@internal | |
331 | In ARM/Thumb-2 state a const_int, const_double or const_vector that can | |
332 | be generated with four Data Processing insns. This pattern is disabled | |
333 | if optimizing for space or when we have load-delay slots to fill." | |
334 | (and (match_code "const_double,const_int,const_vector") | |
335 | (match_test "TARGET_32BIT && arm_const_double_inline_cost (op) == 4 | |
336 | && !(optimize_size || arm_ld_sched)"))) | |
337 | ||
338 | (define_constraint "Dd" | |
339 | "@internal | |
340 | In ARM/Thumb-2 state a const_int that can be used by insn adddi." | |
341 | (and (match_code "const_int") | |
342 | (match_test "TARGET_32BIT && const_ok_for_dimode_op (ival, PLUS)"))) | |
343 | ||
344 | (define_constraint "Di" | |
345 | "@internal | |
346 | In ARM/Thumb-2 state a const_int or const_double where both the high | |
347 | and low SImode words can be generated as immediates in 32-bit instructions." | |
348 | (and (match_code "const_double,const_int") | |
349 | (match_test "TARGET_32BIT && arm_const_double_by_immediates (op)"))) | |
350 | ||
351 | (define_constraint "Dm" | |
352 | "@internal | |
353 | In ARM/Thumb-2 state a const_vector which can be loaded with a Neon vmov | |
354 | immediate instruction." | |
355 | (and (match_code "const_vector") | |
356 | (match_test "TARGET_32BIT | |
357 | && imm_for_neon_mov_operand (op, GET_MODE (op))"))) | |
358 | ||
359 | (define_constraint "Dn" | |
360 | "@internal | |
361 | In ARM/Thumb-2 state a DImode const_int which can be loaded with a Neon vmov | |
362 | immediate instruction." | |
363 | (and (match_code "const_int") | |
364 | (match_test "TARGET_32BIT && imm_for_neon_mov_operand (op, DImode)"))) | |
365 | ||
366 | (define_constraint "DN" | |
367 | "@internal | |
368 | In ARM/Thumb-2 state a TImode const_int which can be loaded with a Neon vmov | |
369 | immediate instruction." | |
370 | (and (match_code "const_int") | |
371 | (match_test "TARGET_32BIT && imm_for_neon_mov_operand (op, TImode)"))) | |
372 | ||
373 | (define_constraint "Dl" | |
374 | "@internal | |
375 | In ARM/Thumb-2 state a const_vector which can be used with a Neon vorr or | |
376 | vbic instruction." | |
377 | (and (match_code "const_vector") | |
378 | (match_test "TARGET_32BIT | |
379 | && imm_for_neon_logic_operand (op, GET_MODE (op))"))) | |
380 | ||
381 | (define_constraint "DL" | |
382 | "@internal | |
383 | In ARM/Thumb-2 state a const_vector which can be used with a Neon vorn or | |
384 | vand instruction." | |
385 | (and (match_code "const_vector") | |
386 | (match_test "TARGET_32BIT | |
387 | && imm_for_neon_inv_logic_operand (op, GET_MODE (op))"))) | |
388 | ||
389 | (define_constraint "Do" | |
390 | "@internal | |
391 | In ARM/Thumb2 state valid offset for an ldrd/strd instruction." | |
392 | (and (match_code "const_int") | |
393 | (match_test "TARGET_LDRD && offset_ok_for_ldrd_strd (ival)"))) | |
394 | ||
395 | (define_constraint "Dv" | |
396 | "@internal | |
397 | In ARM/Thumb-2 state a const_double which can be used with a VFP fconsts | |
398 | instruction." | |
399 | (and (match_code "const_double") | |
400 | (match_test "TARGET_32BIT && vfp3_const_double_rtx (op)"))) | |
401 | ||
402 | (define_constraint "Dy" | |
403 | "@internal | |
404 | In ARM/Thumb-2 state a const_double which can be used with a VFP fconstd | |
405 | instruction." | |
406 | (and (match_code "const_double") | |
407 | (match_test "TARGET_32BIT && TARGET_VFP_DOUBLE && vfp3_const_double_rtx (op)"))) | |
408 | ||
409 | (define_constraint "Dt" | |
410 | "@internal | |
411 | In ARM/ Thumb2 a const_double which can be used with a vcvt.f32.s32 with fract bits operation" | |
412 | (and (match_code "const_double") | |
413 | (match_test "TARGET_32BIT && vfp3_const_double_for_fract_bits (op)"))) | |
414 | ||
415 | (define_constraint "Dp" | |
416 | "@internal | |
417 | In ARM/ Thumb2 a const_double which can be used with a vcvt.s32.f32 with bits operation" | |
418 | (and (match_code "const_double") | |
419 | (match_test "TARGET_32BIT | |
420 | && vfp3_const_double_for_bits (op) > 0"))) | |
421 | ||
422 | (define_constraint "Tu" | |
423 | "@internal In ARM / Thumb-2 an integer constant iff literal pools are | |
424 | allowed." | |
425 | (and (match_test "CONSTANT_P (op)") | |
426 | (match_test "!arm_disable_literal_pool"))) | |
427 | ||
428 | (define_register_constraint "Ts" "(arm_restrict_it) ? LO_REGS : GENERAL_REGS" | |
429 | "For arm_restrict_it the core registers @code{r0}-@code{r7}. GENERAL_REGS otherwise.") | |
430 | ||
431 | (define_memory_constraint "Ua" | |
432 | "@internal | |
433 | An address valid for loading/storing register exclusive" | |
434 | (match_operand 0 "mem_noofs_operand")) | |
435 | ||
436 | (define_memory_constraint "Uh" | |
437 | "@internal | |
438 | An address suitable for byte and half-word loads which does not point inside a constant pool" | |
439 | (and (match_code "mem") | |
440 | (match_test "arm_legitimate_address_p (GET_MODE (op), XEXP (op, 0), false) && !arm_is_constant_pool_ref (op)"))) | |
441 | ||
442 | (define_memory_constraint "Ut" | |
443 | "@internal | |
444 | In ARM/Thumb-2 state an address valid for loading/storing opaque structure | |
445 | types wider than TImode." | |
446 | (and (match_code "mem") | |
447 | (match_test "TARGET_32BIT && neon_struct_mem_operand (op)"))) | |
448 | ||
449 | (define_memory_constraint "Uv" | |
450 | "@internal | |
451 | In ARM/Thumb-2 state a valid VFP load/store address." | |
452 | (and (match_code "mem") | |
453 | (match_test "TARGET_32BIT && arm_coproc_mem_operand (op, FALSE)"))) | |
454 | ||
455 | (define_memory_constraint "Uj" | |
456 | "@internal | |
457 | In ARM/Thumb-2 state a VFP load/store address that supports writeback | |
458 | for Neon but not for MVE" | |
459 | (and (match_code "mem") | |
460 | (match_test "TARGET_32BIT") | |
461 | (match_test "TARGET_HAVE_MVE | |
462 | ? arm_coproc_mem_operand_no_writeback (op) | |
463 | : neon_vector_mem_operand (op, 2, true)"))) | |
464 | ||
465 | (define_memory_constraint "Uy" | |
466 | "@internal | |
467 | In ARM/Thumb-2 state a valid iWMMX load/store address." | |
468 | (and (match_code "mem") | |
469 | (match_test "TARGET_32BIT && arm_coproc_mem_operand (op, TRUE)"))) | |
470 | ||
471 | (define_memory_constraint "Un" | |
472 | "@internal | |
473 | In ARM/Thumb-2 state a valid address for Neon doubleword vector | |
474 | load/store instructions." | |
475 | (and (match_code "mem") | |
476 | (match_test "TARGET_32BIT && neon_vector_mem_operand (op, 0, true)"))) | |
477 | ||
478 | (define_memory_constraint "Um" | |
479 | "@internal | |
480 | In ARM/Thumb-2 state a valid address for Neon element and structure | |
481 | load/store instructions." | |
482 | (and (match_code "mem") | |
483 | (match_test "TARGET_32BIT && neon_vector_mem_operand (op, 2, true)"))) | |
484 | ||
485 | (define_memory_constraint "Us" | |
486 | "@internal | |
487 | In ARM/Thumb-2 state a valid address for non-offset loads/stores of | |
488 | quad-word values in four ARM registers." | |
489 | (and (match_code "mem") | |
490 | (match_test "TARGET_32BIT && neon_vector_mem_operand (op, 1, true)"))) | |
491 | ||
492 | (define_memory_constraint "Ux" | |
493 | "@internal | |
494 | In ARM/Thumb-2 state a valid address and load into CORE regs or only to | |
495 | LO_REGS based on mode of op." | |
496 | (and (match_code "mem") | |
497 | (match_test "(TARGET_HAVE_MVE || TARGET_HAVE_MVE_FLOAT) | |
498 | && mve_vector_mem_operand (GET_MODE (op), | |
499 | XEXP (op, 0), true)"))) | |
500 | ||
501 | (define_memory_constraint "Uq" | |
502 | "@internal | |
503 | In ARM state an address valid in ldrsb instructions." | |
504 | (and (match_code "mem") | |
505 | (match_test "TARGET_ARM | |
506 | && arm_legitimate_address_outer_p (GET_MODE (op), XEXP (op, 0), | |
507 | SIGN_EXTEND, 0) | |
508 | && !arm_is_constant_pool_ref (op)"))) | |
509 | ||
510 | (define_memory_constraint "Q" | |
511 | "@internal | |
512 | An address that is a single base register." | |
513 | (and (match_code "mem") | |
514 | (match_test "REG_P (XEXP (op, 0))"))) | |
515 | ||
516 | (define_memory_constraint "Uu" | |
517 | "@internal | |
518 | In Thumb state an address that is valid in 16bit encoding." | |
519 | (and (match_code "mem") | |
520 | (match_test "TARGET_THUMB | |
521 | && thumb1_legitimate_address_p (GET_MODE (op), XEXP (op, 0), | |
522 | 0)"))) | |
523 | ||
524 | ; The 16-bit post-increment LDR/STR accepted by thumb1_legitimate_address_p | |
525 | ; are actually LDM/STM instructions, so cannot be used to access unaligned | |
526 | ; data. | |
527 | (define_memory_constraint "Uw" | |
528 | "@internal | |
529 | In Thumb state an address that is valid in 16bit encoding, and that can be | |
530 | used for unaligned accesses." | |
531 | (and (match_code "mem") | |
532 | (match_test "TARGET_THUMB | |
533 | && thumb1_legitimate_address_p (GET_MODE (op), XEXP (op, 0), | |
534 | 0) | |
535 | && GET_CODE (XEXP (op, 0)) != POST_INC"))) | |
536 | ||
537 | (define_constraint "US" | |
538 | "@internal | |
539 | US is a symbol reference." | |
540 | (match_code "symbol_ref") | |
541 | ) | |
542 | ||
543 | (define_memory_constraint "Uz" | |
544 | "@internal | |
545 | A memory access that is accessible as an LDC/STC operand" | |
546 | (and (match_code "mem") | |
547 | (match_test "arm_coproc_ldc_stc_legitimate_address (op)"))) | |
548 | ||
549 | ;; We used to have constraint letters for S and R in ARM state, but | |
550 | ;; all uses of these now appear to have been removed. | |
551 | ||
552 | ;; Additionally, we used to have a Q constraint in Thumb state, but | |
553 | ;; this wasn't really a valid memory constraint. Again, all uses of | |
554 | ;; this now seem to have been removed. | |
555 |