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270 lines
6.8 KiB
C
270 lines
6.8 KiB
C
/* Copyright (C) 2009-2020 Free Software Foundation, Inc.
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Contributed by Thomas Koenig
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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 modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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Libgfortran 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 <assert.h>
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/* Auxiliary functions for bounds checking, mostly to reduce library size. */
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/* Bounds checking for the return values of the iforeach functions (such
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as maxloc and minloc). The extent of ret_array must
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must match the rank of array. */
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void
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bounds_iforeach_return (array_t *retarray, array_t *array, const char *name)
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{
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index_type rank;
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index_type ret_rank;
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index_type ret_extent;
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ret_rank = GFC_DESCRIPTOR_RANK (retarray);
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/* ret_rank should always be 1, otherwise there is an internal error */
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GFC_ASSERT(ret_rank == 1);
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rank = GFC_DESCRIPTOR_RANK (array);
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ret_extent = GFC_DESCRIPTOR_EXTENT(retarray,0);
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if (ret_extent != rank)
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runtime_error ("Incorrect extent in return value of"
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" %s intrinsic: is %ld, should be %ld",
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name, (long int) ret_extent, (long int) rank);
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}
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/* Check the return of functions generated from ifunction.m4.
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We check the array descriptor "a" against the extents precomputed
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from ifunction.m4, and complain about the argument a_name in the
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intrinsic function. */
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void
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bounds_ifunction_return (array_t * a, const index_type * extent,
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const char * a_name, const char * intrinsic)
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{
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int empty;
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int rank;
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index_type a_size;
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rank = GFC_DESCRIPTOR_RANK (a);
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a_size = size0 (a);
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empty = 0;
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for (index_type n = 0; n < rank; n++)
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{
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if (extent[n] == 0)
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empty = 1;
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}
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if (empty)
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{
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if (a_size != 0)
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runtime_error ("Incorrect size in %s of %s"
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" intrinsic: should be zero-sized",
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a_name, intrinsic);
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}
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else
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{
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if (a_size == 0)
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runtime_error ("Incorrect size of %s in %s"
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" intrinsic: should not be zero-sized",
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a_name, intrinsic);
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for (index_type n = 0; n < rank; n++)
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{
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index_type a_extent;
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a_extent = GFC_DESCRIPTOR_EXTENT(a, n);
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if (a_extent != extent[n])
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runtime_error("Incorrect extent in %s of %s"
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" intrinsic in dimension %ld: is %ld,"
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" should be %ld", a_name, intrinsic, (long int) n + 1,
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(long int) a_extent, (long int) extent[n]);
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}
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}
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}
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/* Check that two arrays have equal extents, or are both zero-sized. Abort
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with a runtime error if this is not the case. Complain that a has the
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wrong size. */
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void
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bounds_equal_extents (array_t *a, array_t *b, const char *a_name,
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const char *intrinsic)
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{
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index_type a_size, b_size, n;
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assert (GFC_DESCRIPTOR_RANK(a) == GFC_DESCRIPTOR_RANK(b));
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a_size = size0 (a);
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b_size = size0 (b);
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if (b_size == 0)
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{
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if (a_size != 0)
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runtime_error ("Incorrect size of %s in %s"
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" intrinsic: should be zero-sized",
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a_name, intrinsic);
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}
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else
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{
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if (a_size == 0)
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runtime_error ("Incorrect size of %s of %s"
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" intrinsic: Should not be zero-sized",
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a_name, intrinsic);
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for (n = 0; n < GFC_DESCRIPTOR_RANK (b); n++)
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{
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index_type a_extent, b_extent;
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a_extent = GFC_DESCRIPTOR_EXTENT(a, n);
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b_extent = GFC_DESCRIPTOR_EXTENT(b, n);
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if (a_extent != b_extent)
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runtime_error("Incorrect extent in %s of %s"
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" intrinsic in dimension %ld: is %ld,"
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" should be %ld", a_name, intrinsic, (long int) n + 1,
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(long int) a_extent, (long int) b_extent);
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}
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}
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}
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/* Check that the extents of a and b agree, except that a has a missing
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dimension in argument which. Complain about a if anything is wrong. */
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void
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bounds_reduced_extents (array_t *a, array_t *b, int which, const char *a_name,
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const char *intrinsic)
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{
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index_type i, n, a_size, b_size;
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assert (GFC_DESCRIPTOR_RANK(a) == GFC_DESCRIPTOR_RANK(b) - 1);
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a_size = size0 (a);
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b_size = size0 (b);
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if (b_size == 0)
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{
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if (a_size != 0)
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runtime_error ("Incorrect size in %s of %s"
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" intrinsic: should not be zero-sized",
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a_name, intrinsic);
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}
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else
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{
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if (a_size == 0)
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runtime_error ("Incorrect size of %s of %s"
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" intrinsic: should be zero-sized",
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a_name, intrinsic);
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i = 0;
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for (n = 0; n < GFC_DESCRIPTOR_RANK (b); n++)
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{
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index_type a_extent, b_extent;
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if (n != which)
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{
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a_extent = GFC_DESCRIPTOR_EXTENT(a, i);
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b_extent = GFC_DESCRIPTOR_EXTENT(b, n);
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if (a_extent != b_extent)
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runtime_error("Incorrect extent in %s of %s"
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" intrinsic in dimension %ld: is %ld,"
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" should be %ld", a_name, intrinsic, (long int) i + 1,
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(long int) a_extent, (long int) b_extent);
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i++;
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}
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}
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}
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}
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/* count_0 - count all the true elements in an array. The front
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end usually inlines this, we need this for bounds checking
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for unpack. */
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index_type count_0 (const gfc_array_l1 * array)
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{
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const GFC_LOGICAL_1 * restrict base;
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index_type rank;
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int kind;
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int continue_loop;
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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 sstride[GFC_MAX_DIMENSIONS];
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index_type result;
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index_type n;
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rank = GFC_DESCRIPTOR_RANK (array);
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kind = GFC_DESCRIPTOR_SIZE (array);
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base = array->base_addr;
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if (kind == 1 || kind == 2 || kind == 4 || kind == 8
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#ifdef HAVE_GFC_LOGICAL_16
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|| kind == 16
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#endif
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)
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{
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if (base)
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base = GFOR_POINTER_TO_L1 (base, kind);
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}
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else
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internal_error (NULL, "Funny sized logical array in count_0");
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for (n = 0; n < rank; n++)
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{
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sstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(array,n);
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extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
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count[n] = 0;
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if (extent[n] <= 0)
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return 0;
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}
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result = 0;
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continue_loop = 1;
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while (continue_loop)
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{
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if (*base)
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result ++;
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count[0]++;
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base += sstride[0];
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n = 0;
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while (count[n] == extent[n])
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{
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count[n] = 0;
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base -= sstride[n] * extent[n];
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n++;
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if (n == rank)
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{
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continue_loop = 0;
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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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base += sstride[n];
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}
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}
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}
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return result;
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}
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