-/* Generic implementation of the RESHAPE intrinsic
- Copyright 2002 Free Software Foundation, Inc.
+/* Generic implementation of the SPREAD intrinsic
+ 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,
+Ligbfortran 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>
-void
-__spread (const gfc_array_char * ret, const gfc_array_char * source,
- const index_type * along, const index_type * pncopies)
+static void
+spread_internal (gfc_array_char *ret, const gfc_array_char *source,
+ const index_type *along, const index_type *pncopies)
{
/* r.* indicates the return array. */
- index_type rstride[GFC_MAX_DIMENSIONS - 1];
+ index_type rstride[GFC_MAX_DIMENSIONS];
index_type rstride0;
- index_type rdelta;
+ index_type rdelta = 0;
+ index_type rrank;
+ index_type rs;
char *rptr;
char *dest;
/* s.* indicates the source array. */
- index_type sstride[GFC_MAX_DIMENSIONS - 1];
+ index_type sstride[GFC_MAX_DIMENSIONS];
index_type sstride0;
+ index_type srank;
const char *sptr;
- 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 n;
index_type dim;
- index_type size;
index_type ncopies;
+ index_type size;
+
+ size = GFC_DESCRIPTOR_SIZE(source);
+
+ srank = GFC_DESCRIPTOR_RANK(source);
+
+ sstride[0] = 0; /* Avoid warnings if not initialized. */
- size = GFC_DESCRIPTOR_SIZE (source);
- dim = 0;
- for (n = 0; n < GFC_DESCRIPTOR_RANK (ret); n++)
+ rrank = srank + 1;
+ if (rrank > GFC_MAX_DIMENSIONS)
+ runtime_error ("return rank too large in spread()");
+
+ if (*along > rrank)
+ runtime_error ("dim outside of rank in spread()");
+
+ ncopies = *pncopies;
+
+ if (ret->base_addr == NULL)
{
- if (n == *along - 1)
- {
- rdelta = ret->dim[n].stride * size;
- }
- else
- {
- count[dim] = 0;
- extent[dim] = source->dim[dim].ubound + 1 - source->dim[dim].lbound;
- sstride[dim] = source->dim[dim].stride * size;
- rstride[dim] = ret->dim[n].stride * size;
- dim++;
- }
+ /* The front end has signalled that we need to populate the
+ return array descriptor. */
+
+ size_t ub, stride;
+
+ ret->dtype.rank = rrank;
+
+ dim = 0;
+ rs = 1;
+ for (n = 0; n < rrank; n++)
+ {
+ stride = rs;
+ if (n == *along - 1)
+ {
+ ub = ncopies - 1;
+ rdelta = rs * size;
+ rs *= ncopies;
+ }
+ else
+ {
+ count[dim] = 0;
+ extent[dim] = GFC_DESCRIPTOR_EXTENT(source,dim);
+ sstride[dim] = GFC_DESCRIPTOR_STRIDE_BYTES(source,dim);
+ rstride[dim] = rs * size;
+
+ ub = extent[dim]-1;
+ rs *= extent[dim];
+ dim++;
+ }
+
+ GFC_DIMENSION_SET(ret->dim[n], 0, ub, stride);
+ }
+ ret->offset = 0;
+ ret->base_addr = xmallocarray (rs, size);
+
+ if (rs <= 0)
+ return;
}
- dim = GFC_DESCRIPTOR_RANK (source);
- if (sstride[0] == 0)
- sstride[0] = size;
- if (rstride[0] == 0)
- rstride[0] = size;
+ else
+ {
+ int zero_sized;
+
+ zero_sized = 0;
+
+ dim = 0;
+ if (GFC_DESCRIPTOR_RANK(ret) != rrank)
+ runtime_error ("rank mismatch in spread()");
+ if (compile_options.bounds_check)
+ {
+ for (n = 0; n < rrank; n++)
+ {
+ index_type ret_extent;
+
+ ret_extent = GFC_DESCRIPTOR_EXTENT(ret,n);
+ if (n == *along - 1)
+ {
+ rdelta = GFC_DESCRIPTOR_STRIDE_BYTES(ret,n);
+
+ if (ret_extent != ncopies)
+ runtime_error("Incorrect extent in return value of SPREAD"
+ " intrinsic in dimension %ld: is %ld,"
+ " should be %ld", (long int) n+1,
+ (long int) ret_extent, (long int) ncopies);
+ }
+ else
+ {
+ count[dim] = 0;
+ extent[dim] = GFC_DESCRIPTOR_EXTENT(source,dim);
+ if (ret_extent != extent[dim])
+ runtime_error("Incorrect extent in return value of SPREAD"
+ " intrinsic in dimension %ld: is %ld,"
+ " should be %ld", (long int) n+1,
+ (long int) ret_extent,
+ (long int) extent[dim]);
+
+ if (extent[dim] <= 0)
+ zero_sized = 1;
+ sstride[dim] = GFC_DESCRIPTOR_STRIDE_BYTES(source,dim);
+ rstride[dim] = GFC_DESCRIPTOR_STRIDE_BYTES(ret,n);
+ dim++;
+ }
+ }
+ }
+ else
+ {
+ for (n = 0; n < rrank; n++)
+ {
+ if (n == *along - 1)
+ {
+ rdelta = GFC_DESCRIPTOR_STRIDE_BYTES(ret,n);
+ }
+ else
+ {
+ count[dim] = 0;
+ extent[dim] = GFC_DESCRIPTOR_EXTENT(source,dim);
+ if (extent[dim] <= 0)
+ zero_sized = 1;
+ sstride[dim] = GFC_DESCRIPTOR_STRIDE_BYTES(source,dim);
+ rstride[dim] = GFC_DESCRIPTOR_STRIDE_BYTES(ret,n);
+ dim++;
+ }
+ }
+ }
+
+ if (zero_sized)
+ return;
+
+ if (sstride[0] == 0)
+ sstride[0] = size;
+ }
sstride0 = sstride[0];
rstride0 = rstride[0];
- rptr = ret->data;
- sptr = source->data;
- ncopies = *pncopies;
+ rptr = ret->base_addr;
+ sptr = source->base_addr;
while (sptr)
{
sptr -= sstride[n] * extent[n];
rptr -= rstride[n] * extent[n];
n++;
- if (n >= dim)
+ if (n >= srank)
{
/* Break out of the loop. */
sptr = NULL;
}
}
}
+
+/* This version of spread_internal treats the special case of a scalar
+ source. This is much simpler than the more general case above. */
+
+static void
+spread_internal_scalar (gfc_array_char *ret, const char *source,
+ const index_type *along, const index_type *pncopies)
+{
+ int n;
+ int ncopies = *pncopies;
+ char * dest;
+ size_t size;
+
+ size = GFC_DESCRIPTOR_SIZE(ret);
+
+ if (GFC_DESCRIPTOR_RANK (ret) != 1)
+ runtime_error ("incorrect destination rank in spread()");
+
+ if (*along > 1)
+ runtime_error ("dim outside of rank in spread()");
+
+ if (ret->base_addr == NULL)
+ {
+ ret->base_addr = xmallocarray (ncopies, size);
+ ret->offset = 0;
+ GFC_DIMENSION_SET(ret->dim[0], 0, ncopies - 1, 1);
+ }
+ else
+ {
+ if (ncopies - 1 > (GFC_DESCRIPTOR_EXTENT(ret,0) - 1)
+ / GFC_DESCRIPTOR_STRIDE(ret,0))
+ runtime_error ("dim too large in spread()");
+ }
+
+ for (n = 0; n < ncopies; n++)
+ {
+ dest = (char*)(ret->base_addr + n * GFC_DESCRIPTOR_STRIDE_BYTES(ret,0));
+ memcpy (dest , source, size);
+ }
+}
+
+extern void spread (gfc_array_char *, const gfc_array_char *,
+ const index_type *, const index_type *);
+export_proto(spread);
+
+void
+spread (gfc_array_char *ret, const gfc_array_char *source,
+ const index_type *along, const index_type *pncopies)
+{
+ index_type type_size;
+
+ type_size = GFC_DTYPE_TYPE_SIZE(ret);
+ switch(type_size)
+ {
+ case GFC_DTYPE_LOGICAL_1:
+ case GFC_DTYPE_INTEGER_1:
+ spread_i1 ((gfc_array_i1 *) ret, (gfc_array_i1 *) source,
+ *along, *pncopies);
+ return;
+
+ case GFC_DTYPE_LOGICAL_2:
+ case GFC_DTYPE_INTEGER_2:
+ spread_i2 ((gfc_array_i2 *) ret, (gfc_array_i2 *) source,
+ *along, *pncopies);
+ return;
+
+ case GFC_DTYPE_LOGICAL_4:
+ case GFC_DTYPE_INTEGER_4:
+ spread_i4 ((gfc_array_i4 *) ret, (gfc_array_i4 *) source,
+ *along, *pncopies);
+ return;
+
+ case GFC_DTYPE_LOGICAL_8:
+ case GFC_DTYPE_INTEGER_8:
+ spread_i8 ((gfc_array_i8 *) ret, (gfc_array_i8 *) source,
+ *along, *pncopies);
+ return;
+
+#ifdef HAVE_GFC_INTEGER_16
+ case GFC_DTYPE_LOGICAL_16:
+ case GFC_DTYPE_INTEGER_16:
+ spread_i16 ((gfc_array_i16 *) ret, (gfc_array_i16 *) source,
+ *along, *pncopies);
+ return;
+#endif
+
+ case GFC_DTYPE_REAL_4:
+ spread_r4 ((gfc_array_r4 *) ret, (gfc_array_r4 *) source,
+ *along, *pncopies);
+ return;
+
+ case GFC_DTYPE_REAL_8:
+ spread_r8 ((gfc_array_r8 *) ret, (gfc_array_r8 *) source,
+ *along, *pncopies);
+ return;
+
+/* FIXME: This here is a hack, which will have to be removed when
+ the array descriptor is reworked. Currently, we don't store the
+ kind value for the type, but only the size. Because on targets with
+ _Float128, we have sizeof(long double) == sizeof(_Float128),
+ we cannot discriminate here and have to fall back to the generic
+ handling (which is suboptimal). */
+#if !defined(GFC_REAL_16_IS_FLOAT128)
+# ifdef GFC_HAVE_REAL_10
+ case GFC_DTYPE_REAL_10:
+ spread_r10 ((gfc_array_r10 *) ret, (gfc_array_r10 *) source,
+ *along, *pncopies);
+ return;
+# endif
+
+# ifdef GFC_HAVE_REAL_16
+ case GFC_DTYPE_REAL_16:
+ spread_r16 ((gfc_array_r16 *) ret, (gfc_array_r16 *) source,
+ *along, *pncopies);
+ return;
+# endif
+#endif
+
+ case GFC_DTYPE_COMPLEX_4:
+ spread_c4 ((gfc_array_c4 *) ret, (gfc_array_c4 *) source,
+ *along, *pncopies);
+ return;
+
+ case GFC_DTYPE_COMPLEX_8:
+ spread_c8 ((gfc_array_c8 *) ret, (gfc_array_c8 *) source,
+ *along, *pncopies);
+ return;
+
+/* FIXME: This here is a hack, which will have to be removed when
+ the array descriptor is reworked. Currently, we don't store the
+ kind value for the type, but only the size. Because on targets with
+ _Float128, we have sizeof(long double) == sizeof(_Float128),
+ we cannot discriminate here and have to fall back to the generic
+ handling (which is suboptimal). */
+#if !defined(GFC_REAL_16_IS_FLOAT128)
+# ifdef GFC_HAVE_COMPLEX_10
+ case GFC_DTYPE_COMPLEX_10:
+ spread_c10 ((gfc_array_c10 *) ret, (gfc_array_c10 *) source,
+ *along, *pncopies);
+ return;
+# endif
+
+# ifdef GFC_HAVE_COMPLEX_16
+ case GFC_DTYPE_COMPLEX_16:
+ spread_c16 ((gfc_array_c16 *) ret, (gfc_array_c16 *) source,
+ *along, *pncopies);
+ return;
+# endif
+#endif
+
+ }
+
+ switch (GFC_DESCRIPTOR_SIZE (ret))
+ {
+ case 1:
+ spread_i1 ((gfc_array_i1 *) ret, (gfc_array_i1 *) source,
+ *along, *pncopies);
+ return;
+
+ case 2:
+ if (GFC_UNALIGNED_2(ret->base_addr) || GFC_UNALIGNED_2(source->base_addr))
+ break;
+ else
+ {
+ spread_i2 ((gfc_array_i2 *) ret, (gfc_array_i2 *) source,
+ *along, *pncopies);
+ return;
+ }
+
+ case 4:
+ if (GFC_UNALIGNED_4(ret->base_addr) || GFC_UNALIGNED_4(source->base_addr))
+ break;
+ else
+ {
+ spread_i4 ((gfc_array_i4 *) ret, (gfc_array_i4 *) source,
+ *along, *pncopies);
+ return;
+ }
+
+ case 8:
+ if (GFC_UNALIGNED_8(ret->base_addr) || GFC_UNALIGNED_8(source->base_addr))
+ break;
+ else
+ {
+ spread_i8 ((gfc_array_i8 *) ret, (gfc_array_i8 *) source,
+ *along, *pncopies);
+ return;
+ }
+#ifdef HAVE_GFC_INTEGER_16
+ case 16:
+ if (GFC_UNALIGNED_16(ret->base_addr)
+ || GFC_UNALIGNED_16(source->base_addr))
+ break;
+ else
+ {
+ spread_i16 ((gfc_array_i16 *) ret, (gfc_array_i16 *) source,
+ *along, *pncopies);
+ return;
+ }
+#endif
+
+ }
+
+ spread_internal (ret, source, along, pncopies);
+}
+
+
+extern void spread_char (gfc_array_char *, GFC_INTEGER_4,
+ const gfc_array_char *, const index_type *,
+ const index_type *, GFC_INTEGER_4);
+export_proto(spread_char);
+
+void
+spread_char (gfc_array_char *ret,
+ GFC_INTEGER_4 ret_length __attribute__((unused)),
+ const gfc_array_char *source, const index_type *along,
+ const index_type *pncopies,
+ GFC_INTEGER_4 source_length __attribute__((unused)))
+{
+ spread_internal (ret, source, along, pncopies);
+}
+
+
+extern void spread_char4 (gfc_array_char *, GFC_INTEGER_4,
+ const gfc_array_char *, const index_type *,
+ const index_type *, GFC_INTEGER_4);
+export_proto(spread_char4);
+
+void
+spread_char4 (gfc_array_char *ret,
+ GFC_INTEGER_4 ret_length __attribute__((unused)),
+ const gfc_array_char *source, const index_type *along,
+ const index_type *pncopies,
+ GFC_INTEGER_4 source_length __attribute__((unused)))
+{
+ spread_internal (ret, source, along, pncopies);
+}
+
+
+/* The following are the prototypes for the versions of spread with a
+ scalar source. */
+
+extern void spread_scalar (gfc_array_char *, const char *,
+ const index_type *, const index_type *);
+export_proto(spread_scalar);
+
+void
+spread_scalar (gfc_array_char *ret, const char *source,
+ const index_type *along, const index_type *pncopies)
+{
+ index_type type_size;
+
+ if (GFC_DTYPE_IS_UNSET(ret))
+ runtime_error ("return array missing descriptor in spread()");
+
+ type_size = GFC_DTYPE_TYPE_SIZE(ret);
+ switch(type_size)
+ {
+ case GFC_DTYPE_LOGICAL_1:
+ case GFC_DTYPE_INTEGER_1:
+ spread_scalar_i1 ((gfc_array_i1 *) ret, (GFC_INTEGER_1 *) source,
+ *along, *pncopies);
+ return;
+
+ case GFC_DTYPE_LOGICAL_2:
+ case GFC_DTYPE_INTEGER_2:
+ spread_scalar_i2 ((gfc_array_i2 *) ret, (GFC_INTEGER_2 *) source,
+ *along, *pncopies);
+ return;
+
+ case GFC_DTYPE_LOGICAL_4:
+ case GFC_DTYPE_INTEGER_4:
+ spread_scalar_i4 ((gfc_array_i4 *) ret, (GFC_INTEGER_4 *) source,
+ *along, *pncopies);
+ return;
+
+ case GFC_DTYPE_LOGICAL_8:
+ case GFC_DTYPE_INTEGER_8:
+ spread_scalar_i8 ((gfc_array_i8 *) ret, (GFC_INTEGER_8 *) source,
+ *along, *pncopies);
+ return;
+
+#ifdef HAVE_GFC_INTEGER_16
+ case GFC_DTYPE_LOGICAL_16:
+ case GFC_DTYPE_INTEGER_16:
+ spread_scalar_i16 ((gfc_array_i16 *) ret, (GFC_INTEGER_16 *) source,
+ *along, *pncopies);
+ return;
+#endif
+
+ case GFC_DTYPE_REAL_4:
+ spread_scalar_r4 ((gfc_array_r4 *) ret, (GFC_REAL_4 *) source,
+ *along, *pncopies);
+ return;
+
+ case GFC_DTYPE_REAL_8:
+ spread_scalar_r8 ((gfc_array_r8 *) ret, (GFC_REAL_8 *) source,
+ *along, *pncopies);
+ return;
+
+/* FIXME: This here is a hack, which will have to be removed when
+ the array descriptor is reworked. Currently, we don't store the
+ kind value for the type, but only the size. Because on targets with
+ _Float128, we have sizeof(long double) == sizeof(_Float128),
+ we cannot discriminate here and have to fall back to the generic
+ handling (which is suboptimal). */
+#if !defined(GFC_REAL_16_IS_FLOAT128)
+# ifdef HAVE_GFC_REAL_10
+ case GFC_DTYPE_REAL_10:
+ spread_scalar_r10 ((gfc_array_r10 *) ret, (GFC_REAL_10 *) source,
+ *along, *pncopies);
+ return;
+# endif
+
+# ifdef HAVE_GFC_REAL_16
+ case GFC_DTYPE_REAL_16:
+ spread_scalar_r16 ((gfc_array_r16 *) ret, (GFC_REAL_16 *) source,
+ *along, *pncopies);
+ return;
+# endif
+#endif
+
+ case GFC_DTYPE_COMPLEX_4:
+ spread_scalar_c4 ((gfc_array_c4 *) ret, (GFC_COMPLEX_4 *) source,
+ *along, *pncopies);
+ return;
+
+ case GFC_DTYPE_COMPLEX_8:
+ spread_scalar_c8 ((gfc_array_c8 *) ret, (GFC_COMPLEX_8 *) source,
+ *along, *pncopies);
+ return;
+
+/* FIXME: This here is a hack, which will have to be removed when
+ the array descriptor is reworked. Currently, we don't store the
+ kind value for the type, but only the size. Because on targets with
+ _Float128, we have sizeof(long double) == sizeof(_Float128),
+ we cannot discriminate here and have to fall back to the generic
+ handling (which is suboptimal). */
+#if !defined(GFC_REAL_16_IS_FLOAT128)
+# ifdef HAVE_GFC_COMPLEX_10
+ case GFC_DTYPE_COMPLEX_10:
+ spread_scalar_c10 ((gfc_array_c10 *) ret, (GFC_COMPLEX_10 *) source,
+ *along, *pncopies);
+ return;
+# endif
+
+# ifdef HAVE_GFC_COMPLEX_16
+ case GFC_DTYPE_COMPLEX_16:
+ spread_scalar_c16 ((gfc_array_c16 *) ret, (GFC_COMPLEX_16 *) source,
+ *along, *pncopies);
+ return;
+# endif
+#endif
+
+ }
+
+ switch (GFC_DESCRIPTOR_SIZE(ret))
+ {
+ case 1:
+ spread_scalar_i1 ((gfc_array_i1 *) ret, (GFC_INTEGER_1 *) source,
+ *along, *pncopies);
+ return;
+
+ case 2:
+ if (GFC_UNALIGNED_2(ret->base_addr) || GFC_UNALIGNED_2(source))
+ break;
+ else
+ {
+ spread_scalar_i2 ((gfc_array_i2 *) ret, (GFC_INTEGER_2 *) source,
+ *along, *pncopies);
+ return;
+ }
+
+ case 4:
+ if (GFC_UNALIGNED_4(ret->base_addr) || GFC_UNALIGNED_4(source))
+ break;
+ else
+ {
+ spread_scalar_i4 ((gfc_array_i4 *) ret, (GFC_INTEGER_4 *) source,
+ *along, *pncopies);
+ return;
+ }
+
+ case 8:
+ if (GFC_UNALIGNED_8(ret->base_addr) || GFC_UNALIGNED_8(source))
+ break;
+ else
+ {
+ spread_scalar_i8 ((gfc_array_i8 *) ret, (GFC_INTEGER_8 *) source,
+ *along, *pncopies);
+ return;
+ }
+#ifdef HAVE_GFC_INTEGER_16
+ case 16:
+ if (GFC_UNALIGNED_16(ret->base_addr) || GFC_UNALIGNED_16(source))
+ break;
+ else
+ {
+ spread_scalar_i16 ((gfc_array_i16 *) ret, (GFC_INTEGER_16 *) source,
+ *along, *pncopies);
+ return;
+ }
+#endif
+ default:
+ break;
+ }
+
+ spread_internal_scalar (ret, source, along, pncopies);
+}
+
+
+extern void spread_char_scalar (gfc_array_char *, GFC_INTEGER_4,
+ const char *, const index_type *,
+ const index_type *, GFC_INTEGER_4);
+export_proto(spread_char_scalar);
+
+void
+spread_char_scalar (gfc_array_char *ret,
+ GFC_INTEGER_4 ret_length __attribute__((unused)),
+ const char *source, const index_type *along,
+ const index_type *pncopies,
+ GFC_INTEGER_4 source_length __attribute__((unused)))
+{
+ if (GFC_DTYPE_IS_UNSET(ret))
+ runtime_error ("return array missing descriptor in spread()");
+ spread_internal_scalar (ret, source, along, pncopies);
+}
+
+
+extern void spread_char4_scalar (gfc_array_char *, GFC_INTEGER_4,
+ const char *, const index_type *,
+ const index_type *, GFC_INTEGER_4);
+export_proto(spread_char4_scalar);
+
+void
+spread_char4_scalar (gfc_array_char *ret,
+ GFC_INTEGER_4 ret_length __attribute__((unused)),
+ const char *source, const index_type *along,
+ const index_type *pncopies,
+ GFC_INTEGER_4 source_length __attribute__((unused)))
+{
+ if (GFC_DTYPE_IS_UNSET(ret))
+ runtime_error ("return array missing descriptor in spread()");
+ spread_internal_scalar (ret, source, along, pncopies);
+
+}
+
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