334 lines
8.7 KiB
C
334 lines
8.7 KiB
C
/* Specific implementation of the UNPACK intrinsic
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Copyright (C) 2008-2017 Free Software Foundation, Inc.
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Contributed by Thomas Koenig <tkoenig@gcc.gnu.org>, based on
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unpack_generic.c by Paul Brook <paul@nowt.org>.
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This file is part of the GNU Fortran 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 "liblfortran.h"
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#include <string.h>
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#if defined (HAVE_GFC_INTEGER_1)
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void
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unpack0_i1 (gfc_array_i1 *ret, const gfc_array_i1 *vector,
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const gfc_array_l1 *mask, const GFC_INTEGER_1 *fptr)
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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 rs;
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GFC_INTEGER_1 * restrict rptr;
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/* v.* indicates the vector array. */
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index_type vstride0;
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GFC_INTEGER_1 *vptr;
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/* Value for field, this is constant. */
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const GFC_INTEGER_1 fval = *fptr;
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/* m.* indicates the mask array. */
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index_type mstride[GFC_MAX_DIMENSIONS];
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index_type mstride0;
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const GFC_LOGICAL_1 *mptr;
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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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int empty;
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int mask_kind;
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empty = 0;
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mptr = mask->base_addr;
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/* Use the same loop for all logical types, by using GFC_LOGICAL_1
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and using shifting to address size and endian issues. */
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mask_kind = GFC_DESCRIPTOR_SIZE (mask);
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if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
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#ifdef HAVE_GFC_LOGICAL_16
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|| mask_kind == 16
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#endif
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)
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{
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/* Do not convert a NULL pointer as we use test for NULL below. */
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if (mptr)
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mptr = GFOR_POINTER_TO_L1 (mptr, mask_kind);
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}
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else
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runtime_error ("Funny sized logical array");
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if (ret->base_addr == 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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dim = GFC_DESCRIPTOR_RANK (mask);
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rs = 1;
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for (n = 0; n < dim; n++)
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{
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count[n] = 0;
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GFC_DIMENSION_SET(ret->dim[n], 0,
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GFC_DESCRIPTOR_EXTENT(mask,n) - 1, rs);
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extent[n] = GFC_DESCRIPTOR_EXTENT(ret,n);
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empty = empty || extent[n] <= 0;
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rstride[n] = GFC_DESCRIPTOR_STRIDE(ret,n);
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mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
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rs *= extent[n];
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}
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ret->offset = 0;
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ret->base_addr = xmallocarray (rs, sizeof (GFC_INTEGER_1));
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}
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else
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{
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dim = GFC_DESCRIPTOR_RANK (ret);
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/* Initialize to avoid -Wmaybe-uninitialized complaints. */
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rstride[0] = 1;
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for (n = 0; n < dim; n++)
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{
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count[n] = 0;
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extent[n] = GFC_DESCRIPTOR_EXTENT(ret,n);
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empty = empty || extent[n] <= 0;
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rstride[n] = GFC_DESCRIPTOR_STRIDE(ret,n);
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mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
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}
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if (rstride[0] == 0)
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rstride[0] = 1;
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}
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if (empty)
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return;
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if (mstride[0] == 0)
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mstride[0] = 1;
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vstride0 = GFC_DESCRIPTOR_STRIDE(vector,0);
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if (vstride0 == 0)
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vstride0 = 1;
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rstride0 = rstride[0];
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mstride0 = mstride[0];
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rptr = ret->base_addr;
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vptr = vector->base_addr;
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while (rptr)
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{
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if (*mptr)
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{
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/* From vector. */
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*rptr = *vptr;
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vptr += vstride0;
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}
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else
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{
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/* From field. */
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*rptr = fval;
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}
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/* Advance to the next element. */
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rptr += rstride0;
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mptr += mstride0;
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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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rptr -= rstride[n] * extent[n];
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mptr -= mstride[n] * extent[n];
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n++;
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if (n >= dim)
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{
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/* Break out of the loop. */
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rptr = 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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rptr += rstride[n];
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mptr += mstride[n];
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}
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}
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}
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}
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void
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unpack1_i1 (gfc_array_i1 *ret, const gfc_array_i1 *vector,
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const gfc_array_l1 *mask, const gfc_array_i1 *field)
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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 rs;
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GFC_INTEGER_1 * restrict rptr;
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/* v.* indicates the vector array. */
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index_type vstride0;
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GFC_INTEGER_1 *vptr;
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/* f.* indicates the field array. */
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index_type fstride[GFC_MAX_DIMENSIONS];
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index_type fstride0;
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const GFC_INTEGER_1 *fptr;
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/* m.* indicates the mask array. */
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index_type mstride[GFC_MAX_DIMENSIONS];
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index_type mstride0;
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const GFC_LOGICAL_1 *mptr;
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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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int empty;
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int mask_kind;
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empty = 0;
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mptr = mask->base_addr;
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/* Use the same loop for all logical types, by using GFC_LOGICAL_1
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and using shifting to address size and endian issues. */
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mask_kind = GFC_DESCRIPTOR_SIZE (mask);
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if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
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#ifdef HAVE_GFC_LOGICAL_16
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|| mask_kind == 16
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#endif
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)
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{
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/* Do not convert a NULL pointer as we use test for NULL below. */
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if (mptr)
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mptr = GFOR_POINTER_TO_L1 (mptr, mask_kind);
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}
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else
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runtime_error ("Funny sized logical array");
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if (ret->base_addr == 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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dim = GFC_DESCRIPTOR_RANK (mask);
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rs = 1;
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for (n = 0; n < dim; n++)
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{
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count[n] = 0;
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GFC_DIMENSION_SET(ret->dim[n], 0,
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GFC_DESCRIPTOR_EXTENT(mask,n) - 1, rs);
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extent[n] = GFC_DESCRIPTOR_EXTENT(ret,n);
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empty = empty || extent[n] <= 0;
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rstride[n] = GFC_DESCRIPTOR_STRIDE(ret,n);
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fstride[n] = GFC_DESCRIPTOR_STRIDE(field,n);
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mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
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rs *= extent[n];
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}
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ret->offset = 0;
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ret->base_addr = xmallocarray (rs, sizeof (GFC_INTEGER_1));
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}
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else
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{
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dim = GFC_DESCRIPTOR_RANK (ret);
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/* Initialize to avoid -Wmaybe-uninitialized complaints. */
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rstride[0] = 1;
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for (n = 0; n < dim; n++)
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{
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count[n] = 0;
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extent[n] = GFC_DESCRIPTOR_EXTENT(ret,n);
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empty = empty || extent[n] <= 0;
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rstride[n] = GFC_DESCRIPTOR_STRIDE(ret,n);
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fstride[n] = GFC_DESCRIPTOR_STRIDE(field,n);
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mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
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}
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if (rstride[0] == 0)
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rstride[0] = 1;
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}
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if (empty)
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return;
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if (fstride[0] == 0)
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fstride[0] = 1;
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if (mstride[0] == 0)
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mstride[0] = 1;
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vstride0 = GFC_DESCRIPTOR_STRIDE(vector,0);
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if (vstride0 == 0)
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vstride0 = 1;
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rstride0 = rstride[0];
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fstride0 = fstride[0];
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mstride0 = mstride[0];
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rptr = ret->base_addr;
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fptr = field->base_addr;
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vptr = vector->base_addr;
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while (rptr)
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{
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if (*mptr)
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{
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/* From vector. */
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*rptr = *vptr;
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vptr += vstride0;
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}
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else
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{
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/* From field. */
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*rptr = *fptr;
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}
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/* Advance to the next element. */
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rptr += rstride0;
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fptr += fstride0;
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mptr += mstride0;
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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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rptr -= rstride[n] * extent[n];
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fptr -= fstride[n] * extent[n];
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mptr -= mstride[n] * extent[n];
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n++;
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if (n >= dim)
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{
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/* Break out of the loop. */
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rptr = 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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rptr += rstride[n];
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fptr += fstride[n];
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mptr += mstride[n];
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}
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}
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}
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}
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#endif
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