`/* Implementation of the EOSHIFT intrinsic
- Copyright 2002, 2005, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2002-2023 Free Software Foundation, Inc.
Contributed by Paul Brook <paul@nowt.org>
-This file is part of the GNU Fortran 95 runtime library (libgfortran).
+This file is part of the GNU Fortran runtime library (libgfortran).
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 of the License, or (at your option) any later version.
-
-In addition to the permissions in the GNU General Public License, the
-Free Software Foundation gives you unlimited permission to link the
-compiled version of this file into combinations with other programs,
-and to distribute those combinations without any restriction coming
-from the use of this file. (The General Public License restrictions
-do apply in other respects; for example, they cover modification of
-the file, and distribution when not linked into a combine
-executable.)
+version 3 of the License, or (at your option) any later version.
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 General Public License for more details.
-You should have received a copy of the GNU General Public
-License along with libgfortran; see the file COPYING. If not,
-write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, 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 "libgfortran.h"
-#include <stdlib.h>
-#include <assert.h>
#include <string.h>'
include(iparm.m4)dnl
const 'atype` * const restrict h,
const char * const restrict pbound,
const 'atype_name` * const restrict pwhich,
- index_type size, const char * filler, index_type filler_len)
+ const char * filler, index_type filler_len)
{
/* r.* indicates the return array. */
index_type rstride[GFC_MAX_DIMENSIONS];
index_type dim;
index_type len;
index_type n;
+ index_type size;
+ index_type arraysize;
int which;
'atype_name` sh;
'atype_name` delta;
soffset = 0;
roffset = 0;
+ size = GFC_DESCRIPTOR_SIZE(array);
+
if (pwhich)
which = *pwhich - 1;
else
extent[0] = 1;
count[0] = 0;
- if (ret->data == NULL)
+ arraysize = size0 ((array_t *) array);
+ if (ret->base_addr == NULL)
{
- int i;
-
- ret->data = internal_malloc_size (size * size0 ((array_t *)array));
ret->offset = 0;
- ret->dtype = array->dtype;
- for (i = 0; i < GFC_DESCRIPTOR_RANK (array); i++)
+ GFC_DTYPE_COPY(ret,array);
+ for (index_type i = 0; i < GFC_DESCRIPTOR_RANK (array); i++)
{
- ret->dim[i].lbound = 0;
- ret->dim[i].ubound = array->dim[i].ubound - array->dim[i].lbound;
+ index_type ub, str;
+
+ ub = GFC_DESCRIPTOR_EXTENT(array,i) - 1;
if (i == 0)
- ret->dim[i].stride = 1;
+ str = 1;
else
- ret->dim[i].stride = (ret->dim[i-1].ubound + 1) * ret->dim[i-1].stride;
+ 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
+ else if (unlikely (compile_options.bounds_check))
{
- if (size0 ((array_t *) ret) == 0)
- return;
+ 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;
+
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);
n++;
}
}
rstride0 = rstride[0];
sstride0 = sstride[0];
hstride0 = hstride[0];
- rptr = ret->data;
- sptr = array->data;
- hptr = h->data;
+ rptr = ret->base_addr;
+ sptr = array->base_addr;
+ hptr = h->base_addr;
while (rptr)
{
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;
const char * const restrict pbound,
const 'atype_name` * const restrict pwhich)
{
- eoshift1 (ret, array, h, pbound, pwhich, GFC_DESCRIPTOR_SIZE (array),
- "\0", 1);
+ eoshift1 (ret, array, h, pbound, pwhich, "\0", 1);
}
const 'atype` * const restrict h,
const char * const restrict pbound,
const 'atype_name` * const restrict pwhich,
- GFC_INTEGER_4 array_length,
+ GFC_INTEGER_4 array_length __attribute__((unused)),
GFC_INTEGER_4 bound_length __attribute__((unused)))
{
- eoshift1 (ret, array, h, pbound, pwhich, array_length, " ", 1);
+ eoshift1 (ret, array, h, pbound, pwhich, " ", 1);
}
const 'atype` * const restrict h,
const char * const restrict pbound,
const 'atype_name` * const restrict pwhich,
- GFC_INTEGER_4 array_length,
+ GFC_INTEGER_4 array_length __attribute__((unused)),
GFC_INTEGER_4 bound_length __attribute__((unused)))
{
static const gfc_char4_t space = (unsigned char) ''` ''`;
- eoshift1 (ret, array, h, pbound, pwhich, array_length * sizeof (gfc_char4_t),
+ eoshift1 (ret, array, h, pbound, pwhich,
(const char *) &space, sizeof (gfc_char4_t));
}
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