|
111
|
1 /* Implementation of the EOSHIFT intrinsic
|
|
145
|
2 Copyright (C) 2002-2020 Free Software Foundation, Inc.
|
|
111
|
3 Contributed by Paul Brook <paul@nowt.org>
|
|
|
4
|
|
|
5 This file is part of the GNU Fortran runtime library (libgfortran).
|
|
|
6
|
|
|
7 Libgfortran is free software; you can redistribute it and/or
|
|
|
8 modify it under the terms of the GNU General Public
|
|
|
9 License as published by the Free Software Foundation; either
|
|
|
10 version 3 of the License, or (at your option) any later version.
|
|
|
11
|
|
|
12 Libgfortran is distributed in the hope that it will be useful,
|
|
|
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
15 GNU General Public License for more details.
|
|
|
16
|
|
|
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/>. */
|
|
|
25
|
|
|
26 #include "libgfortran.h"
|
|
|
27 #include <string.h>
|
|
|
28
|
|
|
29
|
|
|
30 #if defined (HAVE_GFC_INTEGER_16)
|
|
|
31
|
|
|
32 static void
|
|
|
33 eoshift1 (gfc_array_char * const restrict ret,
|
|
|
34 const gfc_array_char * const restrict array,
|
|
|
35 const gfc_array_i16 * const restrict h,
|
|
|
36 const char * const restrict pbound,
|
|
|
37 const GFC_INTEGER_16 * const restrict pwhich,
|
|
|
38 const char * filler, index_type filler_len)
|
|
|
39 {
|
|
|
40 /* r.* indicates the return array. */
|
|
|
41 index_type rstride[GFC_MAX_DIMENSIONS];
|
|
|
42 index_type rstride0;
|
|
|
43 index_type roffset;
|
|
|
44 char *rptr;
|
|
|
45 char * restrict dest;
|
|
|
46 /* s.* indicates the source array. */
|
|
|
47 index_type sstride[GFC_MAX_DIMENSIONS];
|
|
|
48 index_type sstride0;
|
|
|
49 index_type soffset;
|
|
|
50 const char *sptr;
|
|
|
51 const char *src;
|
|
|
52 /* h.* indicates the shift array. */
|
|
|
53 index_type hstride[GFC_MAX_DIMENSIONS];
|
|
|
54 index_type hstride0;
|
|
|
55 const GFC_INTEGER_16 *hptr;
|
|
|
56
|
|
|
57 index_type count[GFC_MAX_DIMENSIONS];
|
|
|
58 index_type extent[GFC_MAX_DIMENSIONS];
|
|
|
59 index_type dim;
|
|
|
60 index_type len;
|
|
|
61 index_type n;
|
|
|
62 index_type size;
|
|
|
63 index_type arraysize;
|
|
|
64 int which;
|
|
|
65 GFC_INTEGER_16 sh;
|
|
|
66 GFC_INTEGER_16 delta;
|
|
|
67
|
|
|
68 /* The compiler cannot figure out that these are set, initialize
|
|
|
69 them to avoid warnings. */
|
|
|
70 len = 0;
|
|
|
71 soffset = 0;
|
|
|
72 roffset = 0;
|
|
|
73
|
|
|
74 size = GFC_DESCRIPTOR_SIZE(array);
|
|
|
75
|
|
|
76 if (pwhich)
|
|
|
77 which = *pwhich - 1;
|
|
|
78 else
|
|
|
79 which = 0;
|
|
|
80
|
|
|
81 extent[0] = 1;
|
|
|
82 count[0] = 0;
|
|
|
83
|
|
|
84 arraysize = size0 ((array_t *) array);
|
|
|
85 if (ret->base_addr == NULL)
|
|
|
86 {
|
|
|
87 ret->offset = 0;
|
|
131
|
88 GFC_DTYPE_COPY(ret,array);
|
|
|
89 for (index_type i = 0; i < GFC_DESCRIPTOR_RANK (array); i++)
|
|
111
|
90 {
|
|
|
91 index_type ub, str;
|
|
|
92
|
|
|
93 ub = GFC_DESCRIPTOR_EXTENT(array,i) - 1;
|
|
|
94
|
|
|
95 if (i == 0)
|
|
|
96 str = 1;
|
|
|
97 else
|
|
|
98 str = GFC_DESCRIPTOR_EXTENT(ret,i-1)
|
|
|
99 * GFC_DESCRIPTOR_STRIDE(ret,i-1);
|
|
|
100
|
|
|
101 GFC_DIMENSION_SET(ret->dim[i], 0, ub, str);
|
|
|
102
|
|
|
103 }
|
|
|
104 /* xmallocarray allocates a single byte for zero size. */
|
|
|
105 ret->base_addr = xmallocarray (arraysize, size);
|
|
|
106
|
|
|
107 }
|
|
|
108 else if (unlikely (compile_options.bounds_check))
|
|
|
109 {
|
|
|
110 bounds_equal_extents ((array_t *) ret, (array_t *) array,
|
|
|
111 "return value", "EOSHIFT");
|
|
|
112 }
|
|
|
113
|
|
|
114 if (unlikely (compile_options.bounds_check))
|
|
|
115 {
|
|
|
116 bounds_reduced_extents ((array_t *) h, (array_t *) array, which,
|
|
|
117 "SHIFT argument", "EOSHIFT");
|
|
|
118 }
|
|
|
119
|
|
|
120 if (arraysize == 0)
|
|
|
121 return;
|
|
|
122
|
|
|
123 n = 0;
|
|
|
124 for (dim = 0; dim < GFC_DESCRIPTOR_RANK (array); dim++)
|
|
|
125 {
|
|
|
126 if (dim == which)
|
|
|
127 {
|
|
|
128 roffset = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim);
|
|
|
129 if (roffset == 0)
|
|
|
130 roffset = size;
|
|
|
131 soffset = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim);
|
|
|
132 if (soffset == 0)
|
|
|
133 soffset = size;
|
|
|
134 len = GFC_DESCRIPTOR_EXTENT(array,dim);
|
|
|
135 }
|
|
|
136 else
|
|
|
137 {
|
|
|
138 count[n] = 0;
|
|
|
139 extent[n] = GFC_DESCRIPTOR_EXTENT(array,dim);
|
|
|
140 rstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim);
|
|
|
141 sstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim);
|
|
|
142
|
|
|
143 hstride[n] = GFC_DESCRIPTOR_STRIDE(h,n);
|
|
|
144 n++;
|
|
|
145 }
|
|
|
146 }
|
|
|
147 if (sstride[0] == 0)
|
|
|
148 sstride[0] = size;
|
|
|
149 if (rstride[0] == 0)
|
|
|
150 rstride[0] = size;
|
|
|
151 if (hstride[0] == 0)
|
|
|
152 hstride[0] = 1;
|
|
|
153
|
|
|
154 dim = GFC_DESCRIPTOR_RANK (array);
|
|
|
155 rstride0 = rstride[0];
|
|
|
156 sstride0 = sstride[0];
|
|
|
157 hstride0 = hstride[0];
|
|
|
158 rptr = ret->base_addr;
|
|
|
159 sptr = array->base_addr;
|
|
|
160 hptr = h->base_addr;
|
|
|
161
|
|
|
162 while (rptr)
|
|
|
163 {
|
|
|
164 /* Do the shift for this dimension. */
|
|
|
165 sh = *hptr;
|
|
|
166 if (( sh >= 0 ? sh : -sh ) > len)
|
|
|
167 {
|
|
|
168 delta = len;
|
|
|
169 sh = len;
|
|
|
170 }
|
|
|
171 else
|
|
|
172 delta = (sh >= 0) ? sh: -sh;
|
|
|
173
|
|
|
174 if (sh > 0)
|
|
|
175 {
|
|
|
176 src = &sptr[delta * soffset];
|
|
|
177 dest = rptr;
|
|
|
178 }
|
|
|
179 else
|
|
|
180 {
|
|
|
181 src = sptr;
|
|
|
182 dest = &rptr[delta * roffset];
|
|
|
183 }
|
|
|
184
|
|
|
185 /* If the elements are contiguous, perform a single block move. */
|
|
|
186 if (soffset == size && roffset == size)
|
|
|
187 {
|
|
|
188 size_t chunk = size * (len - delta);
|
|
|
189 memcpy (dest, src, chunk);
|
|
|
190 dest += chunk;
|
|
|
191 }
|
|
|
192 else
|
|
|
193 {
|
|
|
194 for (n = 0; n < len - delta; n++)
|
|
|
195 {
|
|
|
196 memcpy (dest, src, size);
|
|
|
197 dest += roffset;
|
|
|
198 src += soffset;
|
|
|
199 }
|
|
|
200 }
|
|
|
201 if (sh < 0)
|
|
|
202 dest = rptr;
|
|
|
203 n = delta;
|
|
|
204
|
|
|
205 if (pbound)
|
|
|
206 while (n--)
|
|
|
207 {
|
|
|
208 memcpy (dest, pbound, size);
|
|
|
209 dest += roffset;
|
|
|
210 }
|
|
|
211 else
|
|
|
212 while (n--)
|
|
|
213 {
|
|
|
214 index_type i;
|
|
|
215
|
|
|
216 if (filler_len == 1)
|
|
|
217 memset (dest, filler[0], size);
|
|
|
218 else
|
|
|
219 for (i = 0; i < size; i += filler_len)
|
|
|
220 memcpy (&dest[i], filler, filler_len);
|
|
|
221
|
|
|
222 dest += roffset;
|
|
|
223 }
|
|
|
224
|
|
|
225 /* Advance to the next section. */
|
|
|
226 rptr += rstride0;
|
|
|
227 sptr += sstride0;
|
|
|
228 hptr += hstride0;
|
|
|
229 count[0]++;
|
|
|
230 n = 0;
|
|
|
231 while (count[n] == extent[n])
|
|
|
232 {
|
|
|
233 /* When we get to the end of a dimension, reset it and increment
|
|
|
234 the next dimension. */
|
|
|
235 count[n] = 0;
|
|
|
236 /* We could precalculate these products, but this is a less
|
|
|
237 frequently used path so probably not worth it. */
|
|
|
238 rptr -= rstride[n] * extent[n];
|
|
|
239 sptr -= sstride[n] * extent[n];
|
|
|
240 hptr -= hstride[n] * extent[n];
|
|
|
241 n++;
|
|
|
242 if (n >= dim - 1)
|
|
|
243 {
|
|
|
244 /* Break out of the loop. */
|
|
|
245 rptr = NULL;
|
|
|
246 break;
|
|
|
247 }
|
|
|
248 else
|
|
|
249 {
|
|
|
250 count[n]++;
|
|
|
251 rptr += rstride[n];
|
|
|
252 sptr += sstride[n];
|
|
|
253 hptr += hstride[n];
|
|
|
254 }
|
|
|
255 }
|
|
|
256 }
|
|
|
257 }
|
|
|
258
|
|
|
259 void eoshift1_16 (gfc_array_char * const restrict,
|
|
|
260 const gfc_array_char * const restrict,
|
|
|
261 const gfc_array_i16 * const restrict, const char * const restrict,
|
|
|
262 const GFC_INTEGER_16 * const restrict);
|
|
|
263 export_proto(eoshift1_16);
|
|
|
264
|
|
|
265 void
|
|
|
266 eoshift1_16 (gfc_array_char * const restrict ret,
|
|
|
267 const gfc_array_char * const restrict array,
|
|
|
268 const gfc_array_i16 * const restrict h,
|
|
|
269 const char * const restrict pbound,
|
|
|
270 const GFC_INTEGER_16 * const restrict pwhich)
|
|
|
271 {
|
|
|
272 eoshift1 (ret, array, h, pbound, pwhich, "\0", 1);
|
|
|
273 }
|
|
|
274
|
|
|
275
|
|
|
276 void eoshift1_16_char (gfc_array_char * const restrict,
|
|
|
277 GFC_INTEGER_4,
|
|
|
278 const gfc_array_char * const restrict,
|
|
|
279 const gfc_array_i16 * const restrict,
|
|
|
280 const char * const restrict,
|
|
|
281 const GFC_INTEGER_16 * const restrict,
|
|
|
282 GFC_INTEGER_4, GFC_INTEGER_4);
|
|
|
283 export_proto(eoshift1_16_char);
|
|
|
284
|
|
|
285 void
|
|
|
286 eoshift1_16_char (gfc_array_char * const restrict ret,
|
|
|
287 GFC_INTEGER_4 ret_length __attribute__((unused)),
|
|
|
288 const gfc_array_char * const restrict array,
|
|
|
289 const gfc_array_i16 * const restrict h,
|
|
|
290 const char * const restrict pbound,
|
|
|
291 const GFC_INTEGER_16 * const restrict pwhich,
|
|
|
292 GFC_INTEGER_4 array_length __attribute__((unused)),
|
|
|
293 GFC_INTEGER_4 bound_length __attribute__((unused)))
|
|
|
294 {
|
|
|
295 eoshift1 (ret, array, h, pbound, pwhich, " ", 1);
|
|
|
296 }
|
|
|
297
|
|
|
298
|
|
|
299 void eoshift1_16_char4 (gfc_array_char * const restrict,
|
|
|
300 GFC_INTEGER_4,
|
|
|
301 const gfc_array_char * const restrict,
|
|
|
302 const gfc_array_i16 * const restrict,
|
|
|
303 const char * const restrict,
|
|
|
304 const GFC_INTEGER_16 * const restrict,
|
|
|
305 GFC_INTEGER_4, GFC_INTEGER_4);
|
|
|
306 export_proto(eoshift1_16_char4);
|
|
|
307
|
|
|
308 void
|
|
|
309 eoshift1_16_char4 (gfc_array_char * const restrict ret,
|
|
|
310 GFC_INTEGER_4 ret_length __attribute__((unused)),
|
|
|
311 const gfc_array_char * const restrict array,
|
|
|
312 const gfc_array_i16 * const restrict h,
|
|
|
313 const char * const restrict pbound,
|
|
|
314 const GFC_INTEGER_16 * const restrict pwhich,
|
|
|
315 GFC_INTEGER_4 array_length __attribute__((unused)),
|
|
|
316 GFC_INTEGER_4 bound_length __attribute__((unused)))
|
|
|
317 {
|
|
|
318 static const gfc_char4_t space = (unsigned char) ' ';
|
|
|
319 eoshift1 (ret, array, h, pbound, pwhich,
|
|
|
320 (const char *) &space, sizeof (gfc_char4_t));
|
|
|
321 }
|
|
|
322
|
|
|
323 #endif
|
