656 lines
18 KiB
C
656 lines
18 KiB
C
/* Generic implementation of the SPREAD intrinsic
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Copyright 2002, 2005, 2006, 2007, 2009 Free Software Foundation, Inc.
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Contributed by Paul Brook <paul@nowt.org>
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This file is part of the GNU Fortran 95 runtime library (libgfortran).
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Libgfortran is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public
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License as published by the Free Software Foundation; either
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version 3 of the License, or (at your option) any later version.
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Ligbfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include "libgfortran.h"
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#include <stdlib.h>
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#include <assert.h>
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#include <string.h>
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static void
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spread_internal (gfc_array_char *ret, const gfc_array_char *source,
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const index_type *along, const index_type *pncopies)
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{
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/* r.* indicates the return array. */
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index_type rstride[GFC_MAX_DIMENSIONS];
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index_type rstride0;
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index_type rdelta = 0;
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index_type rrank;
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index_type rs;
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char *rptr;
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char *dest;
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/* s.* indicates the source array. */
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index_type sstride[GFC_MAX_DIMENSIONS];
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index_type sstride0;
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index_type srank;
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const char *sptr;
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index_type count[GFC_MAX_DIMENSIONS];
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index_type extent[GFC_MAX_DIMENSIONS];
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index_type n;
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index_type dim;
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index_type ncopies;
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index_type size;
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size = GFC_DESCRIPTOR_SIZE(source);
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srank = GFC_DESCRIPTOR_RANK(source);
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rrank = srank + 1;
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if (rrank > GFC_MAX_DIMENSIONS)
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runtime_error ("return rank too large in spread()");
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if (*along > rrank)
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runtime_error ("dim outside of rank in spread()");
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ncopies = *pncopies;
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if (ret->data == NULL)
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{
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/* The front end has signalled that we need to populate the
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return array descriptor. */
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size_t ub, stride;
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ret->dtype = (source->dtype & ~GFC_DTYPE_RANK_MASK) | rrank;
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dim = 0;
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rs = 1;
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for (n = 0; n < rrank; n++)
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{
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stride = rs;
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if (n == *along - 1)
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{
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ub = ncopies - 1;
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rdelta = rs * size;
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rs *= ncopies;
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}
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else
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{
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count[dim] = 0;
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extent[dim] = GFC_DESCRIPTOR_EXTENT(source,dim);
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sstride[dim] = GFC_DESCRIPTOR_STRIDE_BYTES(source,dim);
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rstride[dim] = rs * size;
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ub = extent[dim]-1;
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rs *= extent[dim];
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dim++;
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}
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GFC_DIMENSION_SET(ret->dim[n], 0, ub, stride);
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}
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ret->offset = 0;
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if (rs > 0)
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ret->data = internal_malloc_size (rs * size);
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else
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{
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ret->data = internal_malloc_size (1);
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return;
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}
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}
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else
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{
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int zero_sized;
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zero_sized = 0;
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dim = 0;
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if (GFC_DESCRIPTOR_RANK(ret) != rrank)
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runtime_error ("rank mismatch in spread()");
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if (compile_options.bounds_check)
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{
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for (n = 0; n < rrank; n++)
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{
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index_type ret_extent;
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ret_extent = GFC_DESCRIPTOR_EXTENT(ret,n);
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if (n == *along - 1)
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{
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rdelta = GFC_DESCRIPTOR_STRIDE_BYTES(ret,n);
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if (ret_extent != ncopies)
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runtime_error("Incorrect extent in return value of SPREAD"
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" intrinsic in dimension %ld: is %ld,"
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" should be %ld", (long int) n+1,
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(long int) ret_extent, (long int) ncopies);
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}
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else
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{
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count[dim] = 0;
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extent[dim] = GFC_DESCRIPTOR_EXTENT(source,dim);
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if (ret_extent != extent[dim])
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runtime_error("Incorrect extent in return value of SPREAD"
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" intrinsic in dimension %ld: is %ld,"
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" should be %ld", (long int) n+1,
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(long int) ret_extent,
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(long int) extent[dim]);
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if (extent[dim] <= 0)
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zero_sized = 1;
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sstride[dim] = GFC_DESCRIPTOR_STRIDE_BYTES(source,dim);
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rstride[dim] = GFC_DESCRIPTOR_STRIDE_BYTES(ret,n);
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dim++;
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}
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}
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}
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else
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{
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for (n = 0; n < rrank; n++)
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{
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if (n == *along - 1)
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{
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rdelta = GFC_DESCRIPTOR_STRIDE_BYTES(ret,n);
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}
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else
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{
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count[dim] = 0;
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extent[dim] = GFC_DESCRIPTOR_EXTENT(source,dim);
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if (extent[dim] <= 0)
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zero_sized = 1;
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sstride[dim] = GFC_DESCRIPTOR_STRIDE_BYTES(source,dim);
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rstride[dim] = GFC_DESCRIPTOR_STRIDE_BYTES(ret,n);
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dim++;
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}
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}
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}
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if (zero_sized)
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return;
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if (sstride[0] == 0)
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sstride[0] = size;
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}
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sstride0 = sstride[0];
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rstride0 = rstride[0];
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rptr = ret->data;
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sptr = source->data;
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while (sptr)
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{
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/* Spread this element. */
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dest = rptr;
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for (n = 0; n < ncopies; n++)
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{
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memcpy (dest, sptr, size);
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dest += rdelta;
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}
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/* Advance to the next element. */
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sptr += sstride0;
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rptr += rstride0;
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count[0]++;
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n = 0;
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while (count[n] == extent[n])
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{
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/* When we get to the end of a dimension, reset it and increment
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the next dimension. */
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count[n] = 0;
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/* We could precalculate these products, but this is a less
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frequently used path so probably not worth it. */
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sptr -= sstride[n] * extent[n];
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rptr -= rstride[n] * extent[n];
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n++;
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if (n >= srank)
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{
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/* Break out of the loop. */
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sptr = NULL;
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break;
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}
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else
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{
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count[n]++;
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sptr += sstride[n];
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rptr += rstride[n];
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}
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}
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}
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}
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/* This version of spread_internal treats the special case of a scalar
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source. This is much simpler than the more general case above. */
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static void
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spread_internal_scalar (gfc_array_char *ret, const char *source,
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const index_type *along, const index_type *pncopies)
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{
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int n;
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int ncopies = *pncopies;
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char * dest;
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size_t size;
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size = GFC_DESCRIPTOR_SIZE(ret);
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if (GFC_DESCRIPTOR_RANK (ret) != 1)
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runtime_error ("incorrect destination rank in spread()");
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if (*along > 1)
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runtime_error ("dim outside of rank in spread()");
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if (ret->data == NULL)
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{
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ret->data = internal_malloc_size (ncopies * size);
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ret->offset = 0;
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GFC_DIMENSION_SET(ret->dim[0], 0, ncopies - 1, 1);
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}
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else
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{
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if (ncopies - 1 > (GFC_DESCRIPTOR_EXTENT(ret,0) - 1)
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/ GFC_DESCRIPTOR_STRIDE(ret,0))
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runtime_error ("dim too large in spread()");
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}
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for (n = 0; n < ncopies; n++)
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{
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dest = (char*)(ret->data + n * GFC_DESCRIPTOR_STRIDE_BYTES(ret,0));
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memcpy (dest , source, size);
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}
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}
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extern void spread (gfc_array_char *, const gfc_array_char *,
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const index_type *, const index_type *);
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export_proto(spread);
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void
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spread (gfc_array_char *ret, const gfc_array_char *source,
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const index_type *along, const index_type *pncopies)
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{
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index_type type_size;
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type_size = GFC_DTYPE_TYPE_SIZE(ret);
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switch(type_size)
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{
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case GFC_DTYPE_DERIVED_1:
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case GFC_DTYPE_LOGICAL_1:
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case GFC_DTYPE_INTEGER_1:
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spread_i1 ((gfc_array_i1 *) ret, (gfc_array_i1 *) source,
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*along, *pncopies);
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return;
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case GFC_DTYPE_LOGICAL_2:
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case GFC_DTYPE_INTEGER_2:
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spread_i2 ((gfc_array_i2 *) ret, (gfc_array_i2 *) source,
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*along, *pncopies);
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return;
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case GFC_DTYPE_LOGICAL_4:
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case GFC_DTYPE_INTEGER_4:
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spread_i4 ((gfc_array_i4 *) ret, (gfc_array_i4 *) source,
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*along, *pncopies);
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return;
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case GFC_DTYPE_LOGICAL_8:
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case GFC_DTYPE_INTEGER_8:
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spread_i8 ((gfc_array_i8 *) ret, (gfc_array_i8 *) source,
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*along, *pncopies);
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return;
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#ifdef HAVE_GFC_INTEGER_16
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case GFC_DTYPE_LOGICAL_16:
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case GFC_DTYPE_INTEGER_16:
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spread_i16 ((gfc_array_i16 *) ret, (gfc_array_i16 *) source,
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*along, *pncopies);
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return;
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#endif
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case GFC_DTYPE_REAL_4:
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spread_r4 ((gfc_array_r4 *) ret, (gfc_array_r4 *) source,
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*along, *pncopies);
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return;
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case GFC_DTYPE_REAL_8:
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spread_r8 ((gfc_array_r8 *) ret, (gfc_array_r8 *) source,
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*along, *pncopies);
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return;
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/* FIXME: This here is a hack, which will have to be removed when
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the array descriptor is reworked. Currently, we don't store the
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kind value for the type, but only the size. Because on targets with
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__float128, we have sizeof(logn double) == sizeof(__float128),
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we cannot discriminate here and have to fall back to the generic
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handling (which is suboptimal). */
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#if !defined(GFC_REAL_16_IS_FLOAT128)
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# ifdef GFC_HAVE_REAL_10
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case GFC_DTYPE_REAL_10:
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spread_r10 ((gfc_array_r10 *) ret, (gfc_array_r10 *) source,
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*along, *pncopies);
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return;
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# endif
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# ifdef GFC_HAVE_REAL_16
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case GFC_DTYPE_REAL_16:
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spread_r16 ((gfc_array_r16 *) ret, (gfc_array_r16 *) source,
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*along, *pncopies);
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return;
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# endif
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#endif
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case GFC_DTYPE_COMPLEX_4:
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spread_c4 ((gfc_array_c4 *) ret, (gfc_array_c4 *) source,
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*along, *pncopies);
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return;
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case GFC_DTYPE_COMPLEX_8:
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spread_c8 ((gfc_array_c8 *) ret, (gfc_array_c8 *) source,
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*along, *pncopies);
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return;
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/* FIXME: This here is a hack, which will have to be removed when
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the array descriptor is reworked. Currently, we don't store the
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kind value for the type, but only the size. Because on targets with
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__float128, we have sizeof(logn double) == sizeof(__float128),
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we cannot discriminate here and have to fall back to the generic
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handling (which is suboptimal). */
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#if !defined(GFC_REAL_16_IS_FLOAT128)
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# ifdef GFC_HAVE_COMPLEX_10
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case GFC_DTYPE_COMPLEX_10:
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spread_c10 ((gfc_array_c10 *) ret, (gfc_array_c10 *) source,
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*along, *pncopies);
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return;
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# endif
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# ifdef GFC_HAVE_COMPLEX_16
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case GFC_DTYPE_COMPLEX_16:
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spread_c16 ((gfc_array_c16 *) ret, (gfc_array_c16 *) source,
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*along, *pncopies);
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return;
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# endif
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#endif
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case GFC_DTYPE_DERIVED_2:
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if (GFC_UNALIGNED_2(ret->data) || GFC_UNALIGNED_2(source->data))
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break;
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else
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{
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spread_i2 ((gfc_array_i2 *) ret, (gfc_array_i2 *) source,
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*along, *pncopies);
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return;
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}
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case GFC_DTYPE_DERIVED_4:
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if (GFC_UNALIGNED_4(ret->data) || GFC_UNALIGNED_4(source->data))
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break;
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else
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{
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spread_i4 ((gfc_array_i4 *) ret, (gfc_array_i4 *) source,
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*along, *pncopies);
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return;
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}
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case GFC_DTYPE_DERIVED_8:
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if (GFC_UNALIGNED_8(ret->data) || GFC_UNALIGNED_8(source->data))
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break;
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else
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{
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spread_i8 ((gfc_array_i8 *) ret, (gfc_array_i8 *) source,
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*along, *pncopies);
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return;
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}
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#ifdef HAVE_GFC_INTEGER_16
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case GFC_DTYPE_DERIVED_16:
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if (GFC_UNALIGNED_16(ret->data) || GFC_UNALIGNED_16(source->data))
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break;
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else
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{
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spread_i16 ((gfc_array_i16 *) ret, (gfc_array_i16 *) source,
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*along, *pncopies);
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return;
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}
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#endif
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}
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spread_internal (ret, source, along, pncopies);
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}
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extern void spread_char (gfc_array_char *, GFC_INTEGER_4,
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const gfc_array_char *, const index_type *,
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const index_type *, GFC_INTEGER_4);
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export_proto(spread_char);
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void
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spread_char (gfc_array_char *ret,
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GFC_INTEGER_4 ret_length __attribute__((unused)),
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const gfc_array_char *source, const index_type *along,
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const index_type *pncopies,
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GFC_INTEGER_4 source_length __attribute__((unused)))
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{
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spread_internal (ret, source, along, pncopies);
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}
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extern void spread_char4 (gfc_array_char *, GFC_INTEGER_4,
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const gfc_array_char *, const index_type *,
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const index_type *, GFC_INTEGER_4);
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export_proto(spread_char4);
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void
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spread_char4 (gfc_array_char *ret,
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GFC_INTEGER_4 ret_length __attribute__((unused)),
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const gfc_array_char *source, const index_type *along,
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const index_type *pncopies,
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GFC_INTEGER_4 source_length __attribute__((unused)))
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{
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spread_internal (ret, source, along, pncopies);
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}
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/* The following are the prototypes for the versions of spread with a
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scalar source. */
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extern void spread_scalar (gfc_array_char *, const char *,
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const index_type *, const index_type *);
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export_proto(spread_scalar);
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void
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spread_scalar (gfc_array_char *ret, const char *source,
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const index_type *along, const index_type *pncopies)
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{
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index_type type_size;
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if (!ret->dtype)
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runtime_error ("return array missing descriptor in spread()");
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type_size = GFC_DTYPE_TYPE_SIZE(ret);
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switch(type_size)
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{
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case GFC_DTYPE_DERIVED_1:
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case GFC_DTYPE_LOGICAL_1:
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case GFC_DTYPE_INTEGER_1:
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spread_scalar_i1 ((gfc_array_i1 *) ret, (GFC_INTEGER_1 *) source,
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*along, *pncopies);
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return;
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case GFC_DTYPE_LOGICAL_2:
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case GFC_DTYPE_INTEGER_2:
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spread_scalar_i2 ((gfc_array_i2 *) ret, (GFC_INTEGER_2 *) source,
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*along, *pncopies);
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return;
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case GFC_DTYPE_LOGICAL_4:
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case GFC_DTYPE_INTEGER_4:
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spread_scalar_i4 ((gfc_array_i4 *) ret, (GFC_INTEGER_4 *) source,
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*along, *pncopies);
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return;
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case GFC_DTYPE_LOGICAL_8:
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case GFC_DTYPE_INTEGER_8:
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spread_scalar_i8 ((gfc_array_i8 *) ret, (GFC_INTEGER_8 *) source,
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*along, *pncopies);
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return;
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#ifdef HAVE_GFC_INTEGER_16
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case GFC_DTYPE_LOGICAL_16:
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case GFC_DTYPE_INTEGER_16:
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spread_scalar_i16 ((gfc_array_i16 *) ret, (GFC_INTEGER_16 *) source,
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*along, *pncopies);
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return;
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#endif
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case GFC_DTYPE_REAL_4:
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spread_scalar_r4 ((gfc_array_r4 *) ret, (GFC_REAL_4 *) source,
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*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(logn 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(logn 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
|
|
|
|
case GFC_DTYPE_DERIVED_2:
|
|
if (GFC_UNALIGNED_2(ret->data) || GFC_UNALIGNED_2(source))
|
|
break;
|
|
else
|
|
{
|
|
spread_scalar_i2 ((gfc_array_i2 *) ret, (GFC_INTEGER_2 *) source,
|
|
*along, *pncopies);
|
|
return;
|
|
}
|
|
|
|
case GFC_DTYPE_DERIVED_4:
|
|
if (GFC_UNALIGNED_4(ret->data) || GFC_UNALIGNED_4(source))
|
|
break;
|
|
else
|
|
{
|
|
spread_scalar_i4 ((gfc_array_i4 *) ret, (GFC_INTEGER_4 *) source,
|
|
*along, *pncopies);
|
|
return;
|
|
}
|
|
|
|
case GFC_DTYPE_DERIVED_8:
|
|
if (GFC_UNALIGNED_8(ret->data) || 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 GFC_DTYPE_DERIVED_16:
|
|
if (GFC_UNALIGNED_16(ret->data) || GFC_UNALIGNED_16(source))
|
|
break;
|
|
else
|
|
{
|
|
spread_scalar_i16 ((gfc_array_i16 *) ret, (GFC_INTEGER_16 *) source,
|
|
*along, *pncopies);
|
|
return;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
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 (!ret->dtype)
|
|
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 (!ret->dtype)
|
|
runtime_error ("return array missing descriptor in spread()");
|
|
spread_internal_scalar (ret, source, along, pncopies);
|
|
|
|
}
|
|
|