/* Implementation of the EOSHIFT intrinsic
- Copyright 2002 Free Software Foundation, Inc.
+ Copyright (C) 2002-2024 Free Software Foundation, Inc.
Contributed by Paul Brook <paul@nowt.org>
-This file is part of the GNU Fortran 95 runtime library (libgfor).
+This file is part of the GNU Fortran runtime library (libgfortran).
-Libgfor is free software; you can redistribute it and/or
-modify it under the terms of the GNU Lesser General Public
+Libgfortran is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
-version 2.1 of the License, or (at your option) any later version.
+version 3 of the License, or (at your option) any later version.
-Ligbfor is distributed in the hope that it will be useful,
+Libgfortran is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU Lesser General Public License for more details.
+GNU General Public License for more details.
-You should have received a copy of the GNU Lesser General Public
-License along with libgfor; see the file COPYING.LIB. If not,
-write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
-#include "config.h"
-#include <stdlib.h>
-#include <assert.h>
-#include <string.h>
#include "libgfortran.h"
+#include <string.h>
-static const char zeros[16] =
- {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
-extern void eoshift3_8 (gfc_array_char *, gfc_array_char *,
- gfc_array_i8 *, const gfc_array_char *,
- GFC_INTEGER_8 *);
-export_proto(eoshift3_8);
+#if defined (HAVE_GFC_INTEGER_8)
-void
-eoshift3_8 (gfc_array_char *ret, gfc_array_char *array,
- gfc_array_i8 *h, const gfc_array_char *bound,
- GFC_INTEGER_8 *pwhich)
+static void
+eoshift3 (gfc_array_char * const restrict ret,
+ const gfc_array_char * const restrict array,
+ const gfc_array_i8 * const restrict h,
+ const gfc_array_char * const restrict bound,
+ const GFC_INTEGER_8 * const restrict pwhich,
+ const char * filler, index_type filler_len)
{
/* r.* indicates the return array. */
- index_type rstride[GFC_MAX_DIMENSIONS - 1];
+ index_type rstride[GFC_MAX_DIMENSIONS];
index_type rstride0;
index_type roffset;
char *rptr;
- char *dest;
+ char * restrict dest;
/* s.* indicates the source array. */
- index_type sstride[GFC_MAX_DIMENSIONS - 1];
+ index_type sstride[GFC_MAX_DIMENSIONS];
index_type sstride0;
index_type soffset;
const char *sptr;
const char *src;
/* h.* indicates the shift array. */
- index_type hstride[GFC_MAX_DIMENSIONS - 1];
+ index_type hstride[GFC_MAX_DIMENSIONS];
index_type hstride0;
const GFC_INTEGER_8 *hptr;
/* b.* indicates the bound array. */
- index_type bstride[GFC_MAX_DIMENSIONS - 1];
+ index_type bstride[GFC_MAX_DIMENSIONS];
index_type bstride0;
const char *bptr;
- index_type count[GFC_MAX_DIMENSIONS - 1];
- index_type extent[GFC_MAX_DIMENSIONS - 1];
+ index_type count[GFC_MAX_DIMENSIONS];
+ index_type extent[GFC_MAX_DIMENSIONS];
index_type dim;
- index_type size;
index_type len;
index_type n;
+ index_type size;
+ index_type arraysize;
int which;
GFC_INTEGER_8 sh;
GFC_INTEGER_8 delta;
+ /* The compiler cannot figure out that these are set, initialize
+ them to avoid warnings. */
+ len = 0;
+ soffset = 0;
+ roffset = 0;
+
+ arraysize = size0 ((array_t *) array);
+ size = GFC_DESCRIPTOR_SIZE(array);
+
if (pwhich)
which = *pwhich - 1;
else
which = 0;
- size = GFC_DESCRIPTOR_SIZE (ret);
+ if (ret->base_addr == NULL)
+ {
+ ret->base_addr = xmallocarray (arraysize, size);
+ ret->offset = 0;
+ GFC_DTYPE_COPY(ret,array);
+ for (index_type i = 0; i < GFC_DESCRIPTOR_RANK (array); i++)
+ {
+ index_type ub, str;
+
+ ub = GFC_DESCRIPTOR_EXTENT(array,i) - 1;
+
+ if (i == 0)
+ str = 1;
+ else
+ str = GFC_DESCRIPTOR_EXTENT(ret,i-1)
+ * GFC_DESCRIPTOR_STRIDE(ret,i-1);
+
+ GFC_DIMENSION_SET(ret->dim[i], 0, ub, str);
+
+ }
+ /* xmallocarray allocates a single byte for zero size. */
+ ret->base_addr = xmallocarray (arraysize, size);
+
+ }
+ else if (unlikely (compile_options.bounds_check))
+ {
+ bounds_equal_extents ((array_t *) ret, (array_t *) array,
+ "return value", "EOSHIFT");
+ }
+
+ if (unlikely (compile_options.bounds_check))
+ {
+ bounds_reduced_extents ((array_t *) h, (array_t *) array, which,
+ "SHIFT argument", "EOSHIFT");
+ }
+
+ if (arraysize == 0)
+ return;
extent[0] = 1;
count[0] = 0;
- size = GFC_DESCRIPTOR_SIZE (array);
n = 0;
for (dim = 0; dim < GFC_DESCRIPTOR_RANK (array); dim++)
{
if (dim == which)
{
- roffset = ret->dim[dim].stride * size;
+ roffset = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim);
if (roffset == 0)
roffset = size;
- soffset = array->dim[dim].stride * size;
+ soffset = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim);
if (soffset == 0)
soffset = size;
- len = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
+ len = GFC_DESCRIPTOR_EXTENT(array,dim);
}
else
{
count[n] = 0;
- extent[n] = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
- rstride[n] = ret->dim[dim].stride * size;
- sstride[n] = array->dim[dim].stride * size;
+ extent[n] = GFC_DESCRIPTOR_EXTENT(array,dim);
+ rstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(ret,dim);
+ sstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(array,dim);
- hstride[n] = h->dim[n].stride;
+ hstride[n] = GFC_DESCRIPTOR_STRIDE(h,n);
if (bound)
- bstride[n] = bound->dim[n].stride;
+ bstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(bound,n);
else
bstride[n] = 0;
n++;
sstride0 = sstride[0];
hstride0 = hstride[0];
bstride0 = bstride[0];
- rptr = ret->data;
- sptr = array->data;
- hptr = h->data;
+ rptr = ret->base_addr;
+ sptr = array->base_addr;
+ hptr = h->base_addr;
if (bound)
- bptr = bound->data;
+ bptr = bound->base_addr;
else
- bptr = zeros;
+ bptr = NULL;
while (rptr)
{
/* Do the shift for this dimension. */
sh = *hptr;
- delta = (sh >= 0) ? sh: -sh;
+ if (( sh >= 0 ? sh : -sh ) > len)
+ {
+ delta = len;
+ sh = len;
+ }
+ else
+ delta = (sh >= 0) ? sh: -sh;
+
if (sh > 0)
{
src = &sptr[delta * soffset];
src = sptr;
dest = &rptr[delta * roffset];
}
- for (n = 0; n < len - delta; n++)
- {
- memcpy (dest, src, size);
- dest += roffset;
- src += soffset;
- }
+
+ /* If the elements are contiguous, perform a single block move. */
+ if (soffset == size && roffset == size)
+ {
+ size_t chunk = size * (len - delta);
+ memcpy (dest, src, chunk);
+ dest += chunk;
+ }
+ else
+ {
+ for (n = 0; n < len - delta; n++)
+ {
+ memcpy (dest, src, size);
+ dest += roffset;
+ src += soffset;
+ }
+ }
+
if (sh < 0)
dest = rptr;
n = delta;
- while (n--)
- {
- memcpy (dest, bptr, size);
- dest += roffset;
- }
+ if (bptr)
+ while (n--)
+ {
+ memcpy (dest, bptr, size);
+ dest += roffset;
+ }
+ else
+ while (n--)
+ {
+ index_type i;
+
+ if (filler_len == 1)
+ memset (dest, filler[0], size);
+ else
+ for (i = 0; i < size; i += filler_len)
+ memcpy (&dest[i], filler, filler_len);
+
+ dest += roffset;
+ }
/* Advance to the next section. */
rptr += rstride0;
the next dimension. */
count[n] = 0;
/* We could precalculate these products, but this is a less
- frequently used path so proabably not worth it. */
+ frequently used path so probably not worth it. */
rptr -= rstride[n] * extent[n];
sptr -= sstride[n] * extent[n];
hptr -= hstride[n] * extent[n];
}
}
}
+
+extern void eoshift3_8 (gfc_array_char * const restrict,
+ const gfc_array_char * const restrict,
+ const gfc_array_i8 * const restrict,
+ const gfc_array_char * const restrict,
+ const GFC_INTEGER_8 *);
+export_proto(eoshift3_8);
+
+void
+eoshift3_8 (gfc_array_char * const restrict ret,
+ const gfc_array_char * const restrict array,
+ const gfc_array_i8 * const restrict h,
+ const gfc_array_char * const restrict bound,
+ const GFC_INTEGER_8 * const restrict pwhich)
+{
+ eoshift3 (ret, array, h, bound, pwhich, "\0", 1);
+}
+
+
+extern void eoshift3_8_char (gfc_array_char * const restrict,
+ GFC_INTEGER_4,
+ const gfc_array_char * const restrict,
+ const gfc_array_i8 * const restrict,
+ const gfc_array_char * const restrict,
+ const GFC_INTEGER_8 * const restrict,
+ GFC_INTEGER_4, GFC_INTEGER_4);
+export_proto(eoshift3_8_char);
+
+void
+eoshift3_8_char (gfc_array_char * const restrict ret,
+ GFC_INTEGER_4 ret_length __attribute__((unused)),
+ const gfc_array_char * const restrict array,
+ const gfc_array_i8 * const restrict h,
+ const gfc_array_char * const restrict bound,
+ const GFC_INTEGER_8 * const restrict pwhich,
+ GFC_INTEGER_4 array_length __attribute__((unused)),
+ GFC_INTEGER_4 bound_length __attribute__((unused)))
+{
+ eoshift3 (ret, array, h, bound, pwhich, " ", 1);
+}
+
+
+extern void eoshift3_8_char4 (gfc_array_char * const restrict,
+ GFC_INTEGER_4,
+ const gfc_array_char * const restrict,
+ const gfc_array_i8 * const restrict,
+ const gfc_array_char * const restrict,
+ const GFC_INTEGER_8 * const restrict,
+ GFC_INTEGER_4, GFC_INTEGER_4);
+export_proto(eoshift3_8_char4);
+
+void
+eoshift3_8_char4 (gfc_array_char * const restrict ret,
+ GFC_INTEGER_4 ret_length __attribute__((unused)),
+ const gfc_array_char * const restrict array,
+ const gfc_array_i8 * const restrict h,
+ const gfc_array_char * const restrict bound,
+ const GFC_INTEGER_8 * const restrict pwhich,
+ GFC_INTEGER_4 array_length __attribute__((unused)),
+ GFC_INTEGER_4 bound_length __attribute__((unused)))
+{
+ static const gfc_char4_t space = (unsigned char) ' ';
+ eoshift3 (ret, array, h, bound, pwhich,
+ (const char *) &space, sizeof (gfc_char4_t));
+}
+
+#endif
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