]>
Commit | Line | Data |
---|---|---|
4ee9c684 | 1 | `/* Implementation of the EOSHIFT intrinsic |
fbd26352 | 2 | Copyright (C) 2002-2019 Free Software Foundation, Inc. |
4ee9c684 | 3 | Contributed by Paul Brook <paul@nowt.org> |
4 | ||
553877d9 | 5 | This file is part of the GNU Fortran runtime library (libgfortran). |
4ee9c684 | 6 | |
b417ea8c | 7 | Libgfortran is free software; you can redistribute it and/or |
8 | modify it under the terms of the GNU General Public | |
4ee9c684 | 9 | License as published by the Free Software Foundation; either |
6bc9506f | 10 | version 3 of the License, or (at your option) any later version. |
b417ea8c | 11 | |
12 | Libgfortran is distributed in the hope that it will be useful, | |
4ee9c684 | 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
b417ea8c | 15 | GNU General Public License for more details. |
4ee9c684 | 16 | |
6bc9506f | 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/>. */ | |
4ee9c684 | 25 | |
41f2d5e8 | 26 | #include "libgfortran.h" |
41f2d5e8 | 27 | #include <string.h>' |
28 | ||
cdafa1f6 | 29 | include(iparm.m4)dnl |
4ee9c684 | 30 | |
0a6b5f6b | 31 | `#if defined (HAVE_'atype_name`) |
920e54ef | 32 | |
1a9a4a12 | 33 | static void |
b4cafd67 | 34 | eoshift3 (gfc_array_char * const restrict ret, |
35 | const gfc_array_char * const restrict array, | |
0a6b5f6b | 36 | const 'atype` * const restrict h, |
b4cafd67 | 37 | const gfc_array_char * const restrict bound, |
0a6b5f6b | 38 | const 'atype_name` * const restrict pwhich, |
827aef63 | 39 | const char * filler, index_type filler_len) |
4ee9c684 | 40 | { |
41 | /* r.* indicates the return array. */ | |
9130521e | 42 | index_type rstride[GFC_MAX_DIMENSIONS]; |
4ee9c684 | 43 | index_type rstride0; |
44 | index_type roffset; | |
45 | char *rptr; | |
9d259edf | 46 | char * restrict dest; |
4ee9c684 | 47 | /* s.* indicates the source array. */ |
9130521e | 48 | index_type sstride[GFC_MAX_DIMENSIONS]; |
4ee9c684 | 49 | index_type sstride0; |
50 | index_type soffset; | |
51 | const char *sptr; | |
52 | const char *src; | |
0a6b5f6b | 53 | /* h.* indicates the shift array. */ |
9130521e | 54 | index_type hstride[GFC_MAX_DIMENSIONS]; |
4ee9c684 | 55 | index_type hstride0; |
0a6b5f6b | 56 | const 'atype_name` *hptr; |
4ee9c684 | 57 | /* b.* indicates the bound array. */ |
9130521e | 58 | index_type bstride[GFC_MAX_DIMENSIONS]; |
4ee9c684 | 59 | index_type bstride0; |
60 | const char *bptr; | |
61 | ||
9130521e | 62 | index_type count[GFC_MAX_DIMENSIONS]; |
63 | index_type extent[GFC_MAX_DIMENSIONS]; | |
4ee9c684 | 64 | index_type dim; |
4ee9c684 | 65 | index_type len; |
66 | index_type n; | |
827aef63 | 67 | index_type size; |
5d04d450 | 68 | index_type arraysize; |
4ee9c684 | 69 | int which; |
0a6b5f6b | 70 | 'atype_name` sh; |
71 | 'atype_name` delta; | |
4ee9c684 | 72 | |
7b49b59f | 73 | /* The compiler cannot figure out that these are set, initialize |
74 | them to avoid warnings. */ | |
75 | len = 0; | |
76 | soffset = 0; | |
77 | roffset = 0; | |
78 | ||
5d04d450 | 79 | arraysize = size0 ((array_t *) array); |
827aef63 | 80 | size = GFC_DESCRIPTOR_SIZE(array); |
81 | ||
4ee9c684 | 82 | if (pwhich) |
83 | which = *pwhich - 1; | |
84 | else | |
85 | which = 0; | |
86 | ||
553877d9 | 87 | if (ret->base_addr == NULL) |
71a8a4b3 | 88 | { |
af1e9051 | 89 | ret->base_addr = xmallocarray (arraysize, size); |
93830de1 | 90 | ret->offset = 0; |
da8dff89 | 91 | GFC_DTYPE_COPY(ret,array); |
df52c9a4 | 92 | for (index_type i = 0; i < GFC_DESCRIPTOR_RANK (array); i++) |
71a8a4b3 | 93 | { |
827aef63 | 94 | index_type ub, str; |
95 | ||
96 | ub = GFC_DESCRIPTOR_EXTENT(array,i) - 1; | |
71a8a4b3 | 97 | |
98 | if (i == 0) | |
827aef63 | 99 | str = 1; |
71a8a4b3 | 100 | else |
827aef63 | 101 | str = GFC_DESCRIPTOR_EXTENT(ret,i-1) |
102 | * GFC_DESCRIPTOR_STRIDE(ret,i-1); | |
103 | ||
104 | GFC_DIMENSION_SET(ret->dim[i], 0, ub, str); | |
105 | ||
71a8a4b3 | 106 | } |
af1e9051 | 107 | /* xmallocarray allocates a single byte for zero size. */ |
108 | ret->base_addr = xmallocarray (arraysize, size); | |
5d04d450 | 109 | |
71a8a4b3 | 110 | } |
5d04d450 | 111 | else if (unlikely (compile_options.bounds_check)) |
112 | { | |
113 | bounds_equal_extents ((array_t *) ret, (array_t *) array, | |
114 | "return value", "EOSHIFT"); | |
115 | } | |
116 | ||
117 | if (unlikely (compile_options.bounds_check)) | |
74a175c1 | 118 | { |
5d04d450 | 119 | bounds_reduced_extents ((array_t *) h, (array_t *) array, which, |
120 | "SHIFT argument", "EOSHIFT"); | |
74a175c1 | 121 | } |
71a8a4b3 | 122 | |
5d04d450 | 123 | if (arraysize == 0) |
124 | return; | |
4ee9c684 | 125 | |
126 | extent[0] = 1; | |
127 | count[0] = 0; | |
4ee9c684 | 128 | n = 0; |
129 | for (dim = 0; dim < GFC_DESCRIPTOR_RANK (array); dim++) | |
130 | { | |
131 | if (dim == which) | |
132 | { | |
827aef63 | 133 | roffset = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim); |
4ee9c684 | 134 | if (roffset == 0) |
135 | roffset = size; | |
827aef63 | 136 | soffset = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim); |
4ee9c684 | 137 | if (soffset == 0) |
138 | soffset = size; | |
827aef63 | 139 | len = GFC_DESCRIPTOR_EXTENT(array,dim); |
4ee9c684 | 140 | } |
141 | else | |
142 | { | |
143 | count[n] = 0; | |
827aef63 | 144 | extent[n] = GFC_DESCRIPTOR_EXTENT(array,dim); |
145 | rstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim); | |
146 | sstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim); | |
4ee9c684 | 147 | |
827aef63 | 148 | hstride[n] = GFC_DESCRIPTOR_STRIDE(h,n); |
4ee9c684 | 149 | if (bound) |
827aef63 | 150 | bstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(bound,n); |
4ee9c684 | 151 | else |
152 | bstride[n] = 0; | |
153 | n++; | |
154 | } | |
155 | } | |
156 | if (sstride[0] == 0) | |
157 | sstride[0] = size; | |
158 | if (rstride[0] == 0) | |
159 | rstride[0] = size; | |
160 | if (hstride[0] == 0) | |
161 | hstride[0] = 1; | |
162 | if (bound && bstride[0] == 0) | |
163 | bstride[0] = size; | |
164 | ||
165 | dim = GFC_DESCRIPTOR_RANK (array); | |
166 | rstride0 = rstride[0]; | |
167 | sstride0 = sstride[0]; | |
168 | hstride0 = hstride[0]; | |
169 | bstride0 = bstride[0]; | |
553877d9 | 170 | rptr = ret->base_addr; |
171 | sptr = array->base_addr; | |
172 | hptr = h->base_addr; | |
4ee9c684 | 173 | if (bound) |
553877d9 | 174 | bptr = bound->base_addr; |
4ee9c684 | 175 | else |
1a9a4a12 | 176 | bptr = NULL; |
4ee9c684 | 177 | |
178 | while (rptr) | |
179 | { | |
0a6b5f6b | 180 | /* Do the shift for this dimension. */ |
4ee9c684 | 181 | sh = *hptr; |
4eef4aad | 182 | if (( sh >= 0 ? sh : -sh ) > len) |
183 | { | |
184 | delta = len; | |
185 | sh = len; | |
186 | } | |
187 | else | |
188 | delta = (sh >= 0) ? sh: -sh; | |
189 | ||
4ee9c684 | 190 | if (sh > 0) |
191 | { | |
192 | src = &sptr[delta * soffset]; | |
193 | dest = rptr; | |
194 | } | |
195 | else | |
196 | { | |
197 | src = sptr; | |
198 | dest = &rptr[delta * roffset]; | |
199 | } | |
829231a6 | 200 | |
201 | /* If the elements are contiguous, perform a single block move. */ | |
202 | if (soffset == size && roffset == size) | |
203 | { | |
204 | size_t chunk = size * (len - delta); | |
205 | memcpy (dest, src, chunk); | |
206 | dest += chunk; | |
207 | } | |
208 | else | |
209 | { | |
210 | for (n = 0; n < len - delta; n++) | |
211 | { | |
212 | memcpy (dest, src, size); | |
213 | dest += roffset; | |
214 | src += soffset; | |
215 | } | |
216 | } | |
217 | ||
4ee9c684 | 218 | if (sh < 0) |
219 | dest = rptr; | |
220 | n = delta; | |
221 | ||
1a9a4a12 | 222 | if (bptr) |
223 | while (n--) | |
224 | { | |
225 | memcpy (dest, bptr, size); | |
226 | dest += roffset; | |
227 | } | |
228 | else | |
229 | while (n--) | |
230 | { | |
329f13ad | 231 | index_type i; |
232 | ||
233 | if (filler_len == 1) | |
234 | memset (dest, filler[0], size); | |
235 | else | |
236 | for (i = 0; i < size; i += filler_len) | |
237 | memcpy (&dest[i], filler, filler_len); | |
238 | ||
1a9a4a12 | 239 | dest += roffset; |
240 | } | |
4ee9c684 | 241 | |
242 | /* Advance to the next section. */ | |
243 | rptr += rstride0; | |
244 | sptr += sstride0; | |
245 | hptr += hstride0; | |
246 | bptr += bstride0; | |
247 | count[0]++; | |
248 | n = 0; | |
249 | while (count[n] == extent[n]) | |
250 | { | |
251 | /* When we get to the end of a dimension, reset it and increment | |
252 | the next dimension. */ | |
253 | count[n] = 0; | |
254 | /* We could precalculate these products, but this is a less | |
a2ffc2c4 | 255 | frequently used path so probably not worth it. */ |
4ee9c684 | 256 | rptr -= rstride[n] * extent[n]; |
257 | sptr -= sstride[n] * extent[n]; | |
258 | hptr -= hstride[n] * extent[n]; | |
259 | bptr -= bstride[n] * extent[n]; | |
260 | n++; | |
261 | if (n >= dim - 1) | |
262 | { | |
263 | /* Break out of the loop. */ | |
264 | rptr = NULL; | |
265 | break; | |
266 | } | |
267 | else | |
268 | { | |
269 | count[n]++; | |
270 | rptr += rstride[n]; | |
271 | sptr += sstride[n]; | |
272 | hptr += hstride[n]; | |
273 | bptr += bstride[n]; | |
274 | } | |
275 | } | |
276 | } | |
277 | } | |
1a9a4a12 | 278 | |
0a6b5f6b | 279 | extern void eoshift3_'atype_kind` (gfc_array_char * const restrict, |
b4cafd67 | 280 | const gfc_array_char * const restrict, |
0a6b5f6b | 281 | const 'atype` * const restrict, |
b4cafd67 | 282 | const gfc_array_char * const restrict, |
0a6b5f6b | 283 | const 'atype_name` *); |
284 | export_proto(eoshift3_'atype_kind`); | |
1a9a4a12 | 285 | |
286 | void | |
0a6b5f6b | 287 | eoshift3_'atype_kind` (gfc_array_char * const restrict ret, |
b4cafd67 | 288 | const gfc_array_char * const restrict array, |
0a6b5f6b | 289 | const 'atype` * const restrict h, |
b4cafd67 | 290 | const gfc_array_char * const restrict bound, |
0a6b5f6b | 291 | const 'atype_name` * const restrict pwhich) |
1a9a4a12 | 292 | { |
827aef63 | 293 | eoshift3 (ret, array, h, bound, pwhich, "\0", 1); |
1a9a4a12 | 294 | } |
295 | ||
329f13ad | 296 | |
0a6b5f6b | 297 | extern void eoshift3_'atype_kind`_char (gfc_array_char * const restrict, |
b4cafd67 | 298 | GFC_INTEGER_4, |
299 | const gfc_array_char * const restrict, | |
0a6b5f6b | 300 | const 'atype` * const restrict, |
b4cafd67 | 301 | const gfc_array_char * const restrict, |
0a6b5f6b | 302 | const 'atype_name` * const restrict, |
b4cafd67 | 303 | GFC_INTEGER_4, GFC_INTEGER_4); |
0a6b5f6b | 304 | export_proto(eoshift3_'atype_kind`_char); |
1a9a4a12 | 305 | |
306 | void | |
0a6b5f6b | 307 | eoshift3_'atype_kind`_char (gfc_array_char * const restrict ret, |
b4cafd67 | 308 | GFC_INTEGER_4 ret_length __attribute__((unused)), |
309 | const gfc_array_char * const restrict array, | |
0a6b5f6b | 310 | const 'atype` * const restrict h, |
b4cafd67 | 311 | const gfc_array_char * const restrict bound, |
0a6b5f6b | 312 | const 'atype_name` * const restrict pwhich, |
827aef63 | 313 | GFC_INTEGER_4 array_length __attribute__((unused)), |
b4cafd67 | 314 | GFC_INTEGER_4 bound_length __attribute__((unused))) |
1a9a4a12 | 315 | { |
827aef63 | 316 | eoshift3 (ret, array, h, bound, pwhich, " ", 1); |
329f13ad | 317 | } |
318 | ||
319 | ||
320 | extern void eoshift3_'atype_kind`_char4 (gfc_array_char * const restrict, | |
321 | GFC_INTEGER_4, | |
322 | const gfc_array_char * const restrict, | |
323 | const 'atype` * const restrict, | |
324 | const gfc_array_char * const restrict, | |
325 | const 'atype_name` * const restrict, | |
326 | GFC_INTEGER_4, GFC_INTEGER_4); | |
327 | export_proto(eoshift3_'atype_kind`_char4); | |
328 | ||
329 | void | |
330 | eoshift3_'atype_kind`_char4 (gfc_array_char * const restrict ret, | |
331 | GFC_INTEGER_4 ret_length __attribute__((unused)), | |
332 | const gfc_array_char * const restrict array, | |
333 | const 'atype` * const restrict h, | |
334 | const gfc_array_char * const restrict bound, | |
335 | const 'atype_name` * const restrict pwhich, | |
827aef63 | 336 | GFC_INTEGER_4 array_length __attribute__((unused)), |
329f13ad | 337 | GFC_INTEGER_4 bound_length __attribute__((unused))) |
338 | { | |
339 | static const gfc_char4_t space = (unsigned char) ''` ''`; | |
827aef63 | 340 | eoshift3 (ret, array, h, bound, pwhich, |
329f13ad | 341 | (const char *) &space, sizeof (gfc_char4_t)); |
1a9a4a12 | 342 | } |
920e54ef | 343 | |
0a6b5f6b | 344 | #endif' |