|
111
|
1 /* Generic 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 Ligbfortran 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 static void
|
|
|
31 eoshift2 (gfc_array_char *ret, const gfc_array_char *array,
|
|
131
|
32 index_type shift, const gfc_array_char *bound, int which,
|
|
111
|
33 const char *filler, index_type filler_len)
|
|
|
34 {
|
|
|
35 /* r.* indicates the return array. */
|
|
|
36 index_type rstride[GFC_MAX_DIMENSIONS];
|
|
|
37 index_type rstride0;
|
|
|
38 index_type roffset;
|
|
|
39 char * restrict rptr;
|
|
|
40 char *dest;
|
|
|
41 /* s.* indicates the source array. */
|
|
|
42 index_type sstride[GFC_MAX_DIMENSIONS];
|
|
|
43 index_type sstride0;
|
|
|
44 index_type soffset;
|
|
|
45 const char *sptr;
|
|
|
46 const char *src;
|
|
|
47 /* b.* indicates the bound array. */
|
|
|
48 index_type bstride[GFC_MAX_DIMENSIONS];
|
|
|
49 index_type bstride0;
|
|
|
50 const char *bptr;
|
|
|
51
|
|
|
52 index_type count[GFC_MAX_DIMENSIONS];
|
|
|
53 index_type extent[GFC_MAX_DIMENSIONS];
|
|
|
54 index_type dim;
|
|
|
55 index_type len;
|
|
|
56 index_type n;
|
|
|
57 index_type arraysize;
|
|
|
58 index_type size;
|
|
|
59
|
|
|
60 /* The compiler cannot figure out that these are set, initialize
|
|
|
61 them to avoid warnings. */
|
|
|
62 len = 0;
|
|
|
63 soffset = 0;
|
|
|
64 roffset = 0;
|
|
|
65
|
|
|
66 size = GFC_DESCRIPTOR_SIZE (array);
|
|
|
67
|
|
|
68 arraysize = size0 ((array_t *) array);
|
|
|
69
|
|
|
70 if (ret->base_addr == NULL)
|
|
|
71 {
|
|
|
72 int i;
|
|
|
73
|
|
|
74 ret->offset = 0;
|
|
131
|
75 GFC_DTYPE_COPY(ret,array);
|
|
111
|
76
|
|
|
77 /* xmallocarray allocates a single byte for zero size. */
|
|
|
78 ret->base_addr = xmallocarray (arraysize, size);
|
|
|
79
|
|
|
80 for (i = 0; i < GFC_DESCRIPTOR_RANK (array); i++)
|
|
|
81 {
|
|
|
82 index_type ub, str;
|
|
|
83
|
|
|
84 ub = GFC_DESCRIPTOR_EXTENT(array,i) - 1;
|
|
|
85
|
|
|
86 if (i == 0)
|
|
|
87 str = 1;
|
|
|
88 else
|
|
|
89 str = GFC_DESCRIPTOR_EXTENT(ret,i-1)
|
|
|
90 * GFC_DESCRIPTOR_STRIDE(ret,i-1);
|
|
|
91
|
|
|
92 GFC_DIMENSION_SET(ret->dim[i], 0, ub, str);
|
|
|
93 }
|
|
|
94 }
|
|
|
95 else if (unlikely (compile_options.bounds_check))
|
|
|
96 {
|
|
|
97 bounds_equal_extents ((array_t *) ret, (array_t *) array,
|
|
|
98 "return value", "EOSHIFT");
|
|
|
99 }
|
|
|
100
|
|
|
101 if (arraysize == 0)
|
|
|
102 return;
|
|
|
103
|
|
|
104 which = which - 1;
|
|
|
105
|
|
|
106 extent[0] = 1;
|
|
|
107 count[0] = 0;
|
|
|
108 sstride[0] = -1;
|
|
|
109 rstride[0] = -1;
|
|
|
110 bstride[0] = -1;
|
|
|
111 n = 0;
|
|
|
112 for (dim = 0; dim < GFC_DESCRIPTOR_RANK (array); dim++)
|
|
|
113 {
|
|
|
114 if (dim == which)
|
|
|
115 {
|
|
|
116 roffset = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim);
|
|
|
117 if (roffset == 0)
|
|
|
118 roffset = size;
|
|
|
119 soffset = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim);
|
|
|
120 if (soffset == 0)
|
|
|
121 soffset = size;
|
|
|
122 len = GFC_DESCRIPTOR_EXTENT(array,dim);
|
|
|
123 }
|
|
|
124 else
|
|
|
125 {
|
|
|
126 count[n] = 0;
|
|
|
127 extent[n] = GFC_DESCRIPTOR_EXTENT(array,dim);
|
|
|
128 rstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim);
|
|
|
129 sstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim);
|
|
|
130 if (bound)
|
|
|
131 bstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(bound,n);
|
|
|
132 else
|
|
|
133 bstride[n] = 0;
|
|
|
134 n++;
|
|
|
135 }
|
|
|
136 }
|
|
|
137 if (sstride[0] == 0)
|
|
|
138 sstride[0] = size;
|
|
|
139 if (rstride[0] == 0)
|
|
|
140 rstride[0] = size;
|
|
|
141 if (bound && bstride[0] == 0)
|
|
|
142 bstride[0] = size;
|
|
|
143
|
|
|
144 dim = GFC_DESCRIPTOR_RANK (array);
|
|
|
145 rstride0 = rstride[0];
|
|
|
146 sstride0 = sstride[0];
|
|
|
147 bstride0 = bstride[0];
|
|
|
148 rptr = ret->base_addr;
|
|
|
149 sptr = array->base_addr;
|
|
|
150
|
|
|
151 if ((shift >= 0 ? shift : -shift ) > len)
|
|
|
152 {
|
|
|
153 shift = len;
|
|
|
154 len = 0;
|
|
|
155 }
|
|
|
156 else
|
|
|
157 {
|
|
|
158 if (shift > 0)
|
|
|
159 len = len - shift;
|
|
|
160 else
|
|
|
161 len = len + shift;
|
|
|
162 }
|
|
|
163
|
|
|
164 if (bound)
|
|
|
165 bptr = bound->base_addr;
|
|
|
166 else
|
|
|
167 bptr = NULL;
|
|
|
168
|
|
|
169 while (rptr)
|
|
|
170 {
|
|
|
171 /* Do the shift for this dimension. */
|
|
|
172 if (shift > 0)
|
|
|
173 {
|
|
|
174 src = &sptr[shift * soffset];
|
|
|
175 dest = rptr;
|
|
|
176 }
|
|
|
177 else
|
|
|
178 {
|
|
|
179 src = sptr;
|
|
|
180 dest = &rptr[-shift * roffset];
|
|
|
181 }
|
|
|
182
|
|
|
183 /* If the elements are contiguous, perform a single block move. */
|
|
|
184 if (soffset == size && roffset == size)
|
|
|
185 {
|
|
|
186 size_t chunk = size * len;
|
|
|
187 memcpy (dest, src, chunk);
|
|
|
188 dest += chunk;
|
|
|
189 }
|
|
|
190 else
|
|
|
191 {
|
|
|
192 for (n = 0; n < len; n++)
|
|
|
193 {
|
|
|
194 memcpy (dest, src, size);
|
|
|
195 dest += roffset;
|
|
|
196 src += soffset;
|
|
|
197 }
|
|
|
198 }
|
|
|
199 if (shift >= 0)
|
|
|
200 {
|
|
|
201 n = shift;
|
|
|
202 }
|
|
|
203 else
|
|
|
204 {
|
|
|
205 dest = rptr;
|
|
|
206 n = -shift;
|
|
|
207 }
|
|
|
208
|
|
|
209 if (bptr)
|
|
|
210 while (n--)
|
|
|
211 {
|
|
|
212 memcpy (dest, bptr, size);
|
|
|
213 dest += roffset;
|
|
|
214 }
|
|
|
215 else
|
|
|
216 while (n--)
|
|
|
217 {
|
|
|
218 index_type i;
|
|
|
219
|
|
|
220 if (filler_len == 1)
|
|
|
221 memset (dest, filler[0], size);
|
|
|
222 else
|
|
|
223 for (i = 0; i < size ; i += filler_len)
|
|
|
224 memcpy (&dest[i], filler, filler_len);
|
|
|
225
|
|
|
226 dest += roffset;
|
|
|
227 }
|
|
|
228
|
|
|
229 /* Advance to the next section. */
|
|
|
230 rptr += rstride0;
|
|
|
231 sptr += sstride0;
|
|
|
232 bptr += bstride0;
|
|
|
233 count[0]++;
|
|
|
234 n = 0;
|
|
|
235 while (count[n] == extent[n])
|
|
|
236 {
|
|
|
237 /* When we get to the end of a dimension, reset it and increment
|
|
|
238 the next dimension. */
|
|
|
239 count[n] = 0;
|
|
|
240 /* We could precalculate these products, but this is a less
|
|
|
241 frequently used path so probably not worth it. */
|
|
|
242 rptr -= rstride[n] * extent[n];
|
|
|
243 sptr -= sstride[n] * extent[n];
|
|
|
244 bptr -= bstride[n] * extent[n];
|
|
|
245 n++;
|
|
|
246 if (n >= dim - 1)
|
|
|
247 {
|
|
|
248 /* Break out of the loop. */
|
|
|
249 rptr = NULL;
|
|
|
250 break;
|
|
|
251 }
|
|
|
252 else
|
|
|
253 {
|
|
|
254 count[n]++;
|
|
|
255 rptr += rstride[n];
|
|
|
256 sptr += sstride[n];
|
|
|
257 bptr += bstride[n];
|
|
|
258 }
|
|
|
259 }
|
|
|
260 }
|
|
|
261 }
|
|
|
262
|
|
|
263
|
|
|
264 #define DEFINE_EOSHIFT(N) \
|
|
|
265 extern void eoshift2_##N (gfc_array_char *, const gfc_array_char *, \
|
|
|
266 const GFC_INTEGER_##N *, const gfc_array_char *, \
|
|
|
267 const GFC_INTEGER_##N *); \
|
|
|
268 export_proto(eoshift2_##N); \
|
|
|
269 \
|
|
|
270 void \
|
|
|
271 eoshift2_##N (gfc_array_char *ret, const gfc_array_char *array, \
|
|
|
272 const GFC_INTEGER_##N *pshift, const gfc_array_char *pbound, \
|
|
|
273 const GFC_INTEGER_##N *pdim) \
|
|
|
274 { \
|
|
|
275 eoshift2 (ret, array, *pshift, pbound, pdim ? *pdim : 1, \
|
|
|
276 "\0", 1); \
|
|
|
277 } \
|
|
|
278 \
|
|
|
279 extern void eoshift2_##N##_char (gfc_array_char *, GFC_INTEGER_4, \
|
|
|
280 const gfc_array_char *, \
|
|
|
281 const GFC_INTEGER_##N *, \
|
|
|
282 const gfc_array_char *, \
|
|
|
283 const GFC_INTEGER_##N *, \
|
|
|
284 GFC_INTEGER_4, GFC_INTEGER_4); \
|
|
|
285 export_proto(eoshift2_##N##_char); \
|
|
|
286 \
|
|
|
287 void \
|
|
|
288 eoshift2_##N##_char (gfc_array_char *ret, \
|
|
|
289 GFC_INTEGER_4 ret_length __attribute__((unused)), \
|
|
|
290 const gfc_array_char *array, \
|
|
|
291 const GFC_INTEGER_##N *pshift, \
|
|
|
292 const gfc_array_char *pbound, \
|
|
|
293 const GFC_INTEGER_##N *pdim, \
|
|
|
294 GFC_INTEGER_4 array_length __attribute__((unused)), \
|
|
|
295 GFC_INTEGER_4 bound_length __attribute__((unused))) \
|
|
|
296 { \
|
|
|
297 eoshift2 (ret, array, *pshift, pbound, pdim ? *pdim : 1, \
|
|
|
298 " ", 1); \
|
|
|
299 } \
|
|
|
300 \
|
|
|
301 extern void eoshift2_##N##_char4 (gfc_array_char *, GFC_INTEGER_4, \
|
|
|
302 const gfc_array_char *, \
|
|
|
303 const GFC_INTEGER_##N *, \
|
|
|
304 const gfc_array_char *, \
|
|
|
305 const GFC_INTEGER_##N *, \
|
|
|
306 GFC_INTEGER_4, GFC_INTEGER_4); \
|
|
|
307 export_proto(eoshift2_##N##_char4); \
|
|
|
308 \
|
|
|
309 void \
|
|
|
310 eoshift2_##N##_char4 (gfc_array_char *ret, \
|
|
|
311 GFC_INTEGER_4 ret_length __attribute__((unused)), \
|
|
|
312 const gfc_array_char *array, \
|
|
|
313 const GFC_INTEGER_##N *pshift, \
|
|
|
314 const gfc_array_char *pbound, \
|
|
|
315 const GFC_INTEGER_##N *pdim, \
|
|
|
316 GFC_INTEGER_4 array_length __attribute__((unused)), \
|
|
|
317 GFC_INTEGER_4 bound_length __attribute__((unused))) \
|
|
|
318 { \
|
|
|
319 static const gfc_char4_t space = (unsigned char) ' '; \
|
|
|
320 eoshift2 (ret, array, *pshift, pbound, pdim ? *pdim : 1, \
|
|
|
321 (const char *) &space, \
|
|
|
322 sizeof (gfc_char4_t)); \
|
|
|
323 }
|
|
|
324
|
|
|
325 DEFINE_EOSHIFT (1);
|
|
|
326 DEFINE_EOSHIFT (2);
|
|
|
327 DEFINE_EOSHIFT (4);
|
|
|
328 DEFINE_EOSHIFT (8);
|
|
|
329 #ifdef HAVE_GFC_INTEGER_16
|
|
|
330 DEFINE_EOSHIFT (16);
|
|
|
331 #endif
|
