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6de9cd9a | 1 | /* Implementation of the EOSHIFT intrinsic |
85ec4feb | 2 | Copyright (C) 2002-2018 Free Software Foundation, Inc. |
6de9cd9a DN |
3 | Contributed by Paul Brook <paul@nowt.org> |
4 | ||
21d1335b | 5 | This file is part of the GNU Fortran runtime library (libgfortran). |
6de9cd9a | 6 | |
57dea9f6 TM |
7 | Libgfortran is free software; you can redistribute it and/or |
8 | modify it under the terms of the GNU General Public | |
6de9cd9a | 9 | License as published by the Free Software Foundation; either |
748086b7 | 10 | version 3 of the License, or (at your option) any later version. |
57dea9f6 TM |
11 | |
12 | Libgfortran is distributed in the hope that it will be useful, | |
6de9cd9a DN |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
57dea9f6 | 15 | GNU General Public License for more details. |
6de9cd9a | 16 | |
748086b7 JJ |
17 | Under Section 7 of GPL version 3, you are granted additional |
18 | permissions described in the GCC Runtime Library Exception, version | |
19 | 3.1, as published by the Free Software Foundation. | |
20 | ||
21 | You should have received a copy of the GNU General Public License and | |
22 | a copy of the GCC Runtime Library Exception along with this program; | |
23 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
24 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a | 25 | |
36ae8a61 | 26 | #include "libgfortran.h" |
6de9cd9a | 27 | #include <string.h> |
36ae8a61 | 28 | |
6de9cd9a | 29 | |
644cb69f FXC |
30 | #if defined (HAVE_GFC_INTEGER_8) |
31 | ||
7823229b | 32 | static void |
64acfd99 JB |
33 | eoshift3 (gfc_array_char * const restrict ret, |
34 | const gfc_array_char * const restrict array, | |
35 | const gfc_array_i8 * const restrict h, | |
36 | const gfc_array_char * const restrict bound, | |
37 | const GFC_INTEGER_8 * const restrict pwhich, | |
dfb55fdc | 38 | const char * filler, index_type filler_len) |
6de9cd9a DN |
39 | { |
40 | /* r.* indicates the return array. */ | |
e33e218b | 41 | index_type rstride[GFC_MAX_DIMENSIONS]; |
6de9cd9a DN |
42 | index_type rstride0; |
43 | index_type roffset; | |
44 | char *rptr; | |
5863aacf | 45 | char * restrict dest; |
6de9cd9a | 46 | /* s.* indicates the source array. */ |
e33e218b | 47 | index_type sstride[GFC_MAX_DIMENSIONS]; |
6de9cd9a DN |
48 | index_type sstride0; |
49 | index_type soffset; | |
50 | const char *sptr; | |
51 | const char *src; | |
52 | /* h.* indicates the shift array. */ | |
e33e218b | 53 | index_type hstride[GFC_MAX_DIMENSIONS]; |
6de9cd9a DN |
54 | index_type hstride0; |
55 | const GFC_INTEGER_8 *hptr; | |
56 | /* b.* indicates the bound array. */ | |
e33e218b | 57 | index_type bstride[GFC_MAX_DIMENSIONS]; |
6de9cd9a DN |
58 | index_type bstride0; |
59 | const char *bptr; | |
60 | ||
e33e218b TK |
61 | index_type count[GFC_MAX_DIMENSIONS]; |
62 | index_type extent[GFC_MAX_DIMENSIONS]; | |
6de9cd9a | 63 | index_type dim; |
6de9cd9a DN |
64 | index_type len; |
65 | index_type n; | |
dfb55fdc | 66 | index_type size; |
16bff921 | 67 | index_type arraysize; |
6de9cd9a DN |
68 | int which; |
69 | GFC_INTEGER_8 sh; | |
70 | GFC_INTEGER_8 delta; | |
71 | ||
7672ae20 AJ |
72 | /* The compiler cannot figure out that these are set, initialize |
73 | them to avoid warnings. */ | |
74 | len = 0; | |
75 | soffset = 0; | |
76 | roffset = 0; | |
77 | ||
16bff921 | 78 | arraysize = size0 ((array_t *) array); |
dfb55fdc TK |
79 | size = GFC_DESCRIPTOR_SIZE(array); |
80 | ||
6de9cd9a DN |
81 | if (pwhich) |
82 | which = *pwhich - 1; | |
83 | else | |
84 | which = 0; | |
85 | ||
21d1335b | 86 | if (ret->base_addr == NULL) |
0e6d033b TK |
87 | { |
88 | int i; | |
89 | ||
92e6f3a4 | 90 | ret->base_addr = xmallocarray (arraysize, size); |
efd4dc1a | 91 | ret->offset = 0; |
fa3c4d47 | 92 | GFC_DTYPE_COPY(ret,array); |
0e6d033b TK |
93 | for (i = 0; i < GFC_DESCRIPTOR_RANK (array); i++) |
94 | { | |
dfb55fdc TK |
95 | index_type ub, str; |
96 | ||
97 | ub = GFC_DESCRIPTOR_EXTENT(array,i) - 1; | |
0e6d033b TK |
98 | |
99 | if (i == 0) | |
dfb55fdc | 100 | str = 1; |
0e6d033b | 101 | else |
dfb55fdc TK |
102 | str = GFC_DESCRIPTOR_EXTENT(ret,i-1) |
103 | * GFC_DESCRIPTOR_STRIDE(ret,i-1); | |
104 | ||
105 | GFC_DIMENSION_SET(ret->dim[i], 0, ub, str); | |
106 | ||
0e6d033b | 107 | } |
92e6f3a4 JB |
108 | /* xmallocarray allocates a single byte for zero size. */ |
109 | ret->base_addr = xmallocarray (arraysize, size); | |
16bff921 | 110 | |
0e6d033b | 111 | } |
16bff921 TK |
112 | else if (unlikely (compile_options.bounds_check)) |
113 | { | |
114 | bounds_equal_extents ((array_t *) ret, (array_t *) array, | |
115 | "return value", "EOSHIFT"); | |
116 | } | |
117 | ||
118 | if (unlikely (compile_options.bounds_check)) | |
c44109aa | 119 | { |
16bff921 TK |
120 | bounds_reduced_extents ((array_t *) h, (array_t *) array, which, |
121 | "SHIFT argument", "EOSHIFT"); | |
c44109aa | 122 | } |
0e6d033b | 123 | |
16bff921 TK |
124 | if (arraysize == 0) |
125 | return; | |
6de9cd9a DN |
126 | |
127 | extent[0] = 1; | |
128 | count[0] = 0; | |
6de9cd9a DN |
129 | n = 0; |
130 | for (dim = 0; dim < GFC_DESCRIPTOR_RANK (array); dim++) | |
131 | { | |
132 | if (dim == which) | |
133 | { | |
dfb55fdc | 134 | roffset = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim); |
6de9cd9a DN |
135 | if (roffset == 0) |
136 | roffset = size; | |
dfb55fdc | 137 | soffset = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim); |
6de9cd9a DN |
138 | if (soffset == 0) |
139 | soffset = size; | |
dfb55fdc | 140 | len = GFC_DESCRIPTOR_EXTENT(array,dim); |
6de9cd9a DN |
141 | } |
142 | else | |
143 | { | |
144 | count[n] = 0; | |
dfb55fdc TK |
145 | extent[n] = GFC_DESCRIPTOR_EXTENT(array,dim); |
146 | rstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim); | |
147 | sstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim); | |
6de9cd9a | 148 | |
dfb55fdc | 149 | hstride[n] = GFC_DESCRIPTOR_STRIDE(h,n); |
6de9cd9a | 150 | if (bound) |
dfb55fdc | 151 | bstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(bound,n); |
6de9cd9a DN |
152 | else |
153 | bstride[n] = 0; | |
154 | n++; | |
155 | } | |
156 | } | |
157 | if (sstride[0] == 0) | |
158 | sstride[0] = size; | |
159 | if (rstride[0] == 0) | |
160 | rstride[0] = size; | |
161 | if (hstride[0] == 0) | |
162 | hstride[0] = 1; | |
163 | if (bound && bstride[0] == 0) | |
164 | bstride[0] = size; | |
165 | ||
166 | dim = GFC_DESCRIPTOR_RANK (array); | |
167 | rstride0 = rstride[0]; | |
168 | sstride0 = sstride[0]; | |
169 | hstride0 = hstride[0]; | |
170 | bstride0 = bstride[0]; | |
21d1335b TB |
171 | rptr = ret->base_addr; |
172 | sptr = array->base_addr; | |
173 | hptr = h->base_addr; | |
6de9cd9a | 174 | if (bound) |
21d1335b | 175 | bptr = bound->base_addr; |
6de9cd9a | 176 | else |
7823229b | 177 | bptr = NULL; |
6de9cd9a DN |
178 | |
179 | while (rptr) | |
180 | { | |
181 | /* Do the shift for this dimension. */ | |
182 | sh = *hptr; | |
47b3a403 TK |
183 | if (( sh >= 0 ? sh : -sh ) > len) |
184 | { | |
185 | delta = len; | |
186 | sh = len; | |
187 | } | |
188 | else | |
189 | delta = (sh >= 0) ? sh: -sh; | |
190 | ||
6de9cd9a DN |
191 | if (sh > 0) |
192 | { | |
193 | src = &sptr[delta * soffset]; | |
194 | dest = rptr; | |
195 | } | |
196 | else | |
197 | { | |
198 | src = sptr; | |
199 | dest = &rptr[delta * roffset]; | |
200 | } | |
ba71a2a6 TK |
201 | |
202 | /* If the elements are contiguous, perform a single block move. */ | |
203 | if (soffset == size && roffset == size) | |
204 | { | |
205 | size_t chunk = size * (len - delta); | |
206 | memcpy (dest, src, chunk); | |
207 | dest += chunk; | |
208 | } | |
209 | else | |
210 | { | |
211 | for (n = 0; n < len - delta; n++) | |
212 | { | |
213 | memcpy (dest, src, size); | |
214 | dest += roffset; | |
215 | src += soffset; | |
216 | } | |
217 | } | |
218 | ||
6de9cd9a DN |
219 | if (sh < 0) |
220 | dest = rptr; | |
221 | n = delta; | |
222 | ||
7823229b RS |
223 | if (bptr) |
224 | while (n--) | |
225 | { | |
226 | memcpy (dest, bptr, size); | |
227 | dest += roffset; | |
228 | } | |
229 | else | |
230 | while (n--) | |
231 | { | |
691da334 FXC |
232 | index_type i; |
233 | ||
234 | if (filler_len == 1) | |
235 | memset (dest, filler[0], size); | |
236 | else | |
237 | for (i = 0; i < size; i += filler_len) | |
238 | memcpy (&dest[i], filler, filler_len); | |
239 | ||
7823229b RS |
240 | dest += roffset; |
241 | } | |
6de9cd9a DN |
242 | |
243 | /* Advance to the next section. */ | |
244 | rptr += rstride0; | |
245 | sptr += sstride0; | |
246 | hptr += hstride0; | |
247 | bptr += bstride0; | |
248 | count[0]++; | |
249 | n = 0; | |
250 | while (count[n] == extent[n]) | |
251 | { | |
252 | /* When we get to the end of a dimension, reset it and increment | |
253 | the next dimension. */ | |
254 | count[n] = 0; | |
255 | /* We could precalculate these products, but this is a less | |
5d7adf7a | 256 | frequently used path so probably not worth it. */ |
6de9cd9a DN |
257 | rptr -= rstride[n] * extent[n]; |
258 | sptr -= sstride[n] * extent[n]; | |
259 | hptr -= hstride[n] * extent[n]; | |
260 | bptr -= bstride[n] * extent[n]; | |
261 | n++; | |
262 | if (n >= dim - 1) | |
263 | { | |
264 | /* Break out of the loop. */ | |
265 | rptr = NULL; | |
266 | break; | |
267 | } | |
268 | else | |
269 | { | |
270 | count[n]++; | |
271 | rptr += rstride[n]; | |
272 | sptr += sstride[n]; | |
273 | hptr += hstride[n]; | |
274 | bptr += bstride[n]; | |
275 | } | |
276 | } | |
277 | } | |
278 | } | |
7823229b | 279 | |
64acfd99 JB |
280 | extern void eoshift3_8 (gfc_array_char * const restrict, |
281 | const gfc_array_char * const restrict, | |
282 | const gfc_array_i8 * const restrict, | |
283 | const gfc_array_char * const restrict, | |
284 | const GFC_INTEGER_8 *); | |
7823229b RS |
285 | export_proto(eoshift3_8); |
286 | ||
287 | void | |
64acfd99 JB |
288 | eoshift3_8 (gfc_array_char * const restrict ret, |
289 | const gfc_array_char * const restrict array, | |
290 | const gfc_array_i8 * const restrict h, | |
291 | const gfc_array_char * const restrict bound, | |
292 | const GFC_INTEGER_8 * const restrict pwhich) | |
7823229b | 293 | { |
dfb55fdc | 294 | eoshift3 (ret, array, h, bound, pwhich, "\0", 1); |
7823229b RS |
295 | } |
296 | ||
691da334 | 297 | |
64acfd99 JB |
298 | extern void eoshift3_8_char (gfc_array_char * const restrict, |
299 | GFC_INTEGER_4, | |
300 | const gfc_array_char * const restrict, | |
301 | const gfc_array_i8 * const restrict, | |
302 | const gfc_array_char * const restrict, | |
303 | const GFC_INTEGER_8 * const restrict, | |
304 | GFC_INTEGER_4, GFC_INTEGER_4); | |
7823229b RS |
305 | export_proto(eoshift3_8_char); |
306 | ||
307 | void | |
64acfd99 JB |
308 | eoshift3_8_char (gfc_array_char * const restrict ret, |
309 | GFC_INTEGER_4 ret_length __attribute__((unused)), | |
310 | const gfc_array_char * const restrict array, | |
311 | const gfc_array_i8 * const restrict h, | |
312 | const gfc_array_char * const restrict bound, | |
313 | const GFC_INTEGER_8 * const restrict pwhich, | |
dfb55fdc | 314 | GFC_INTEGER_4 array_length __attribute__((unused)), |
64acfd99 | 315 | GFC_INTEGER_4 bound_length __attribute__((unused))) |
7823229b | 316 | { |
dfb55fdc | 317 | eoshift3 (ret, array, h, bound, pwhich, " ", 1); |
691da334 FXC |
318 | } |
319 | ||
320 | ||
321 | extern void eoshift3_8_char4 (gfc_array_char * const restrict, | |
322 | GFC_INTEGER_4, | |
323 | const gfc_array_char * const restrict, | |
324 | const gfc_array_i8 * const restrict, | |
325 | const gfc_array_char * const restrict, | |
326 | const GFC_INTEGER_8 * const restrict, | |
327 | GFC_INTEGER_4, GFC_INTEGER_4); | |
328 | export_proto(eoshift3_8_char4); | |
329 | ||
330 | void | |
331 | eoshift3_8_char4 (gfc_array_char * const restrict ret, | |
332 | GFC_INTEGER_4 ret_length __attribute__((unused)), | |
333 | const gfc_array_char * const restrict array, | |
334 | const gfc_array_i8 * const restrict h, | |
335 | const gfc_array_char * const restrict bound, | |
336 | const GFC_INTEGER_8 * const restrict pwhich, | |
dfb55fdc | 337 | GFC_INTEGER_4 array_length __attribute__((unused)), |
691da334 FXC |
338 | GFC_INTEGER_4 bound_length __attribute__((unused))) |
339 | { | |
340 | static const gfc_char4_t space = (unsigned char) ' '; | |
dfb55fdc | 341 | eoshift3 (ret, array, h, bound, pwhich, |
691da334 | 342 | (const char *) &space, sizeof (gfc_char4_t)); |
7823229b | 343 | } |
644cb69f FXC |
344 | |
345 | #endif |