Check in gcc sources for prebuilt toolchains in Eclair.

1 files changed, 481 insertions, 0 deletions

diff --git a/gcc-4.2.1/libgfortran/intrinsics/pack_generic.c b/gcc-4.2.1/libgfortran/intrinsics/pack_generic.c
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+++ b/gcc-4.2.1/libgfortran/intrinsics/pack_generic.c
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+/* Generic implementation of the PACK intrinsic
+   Copyright (C) 2002, 2004, 2005, 2006 Free Software Foundation, Inc.
+   Contributed by Paul Brook <paul@nowt.org>
+
+This file is part of the GNU Fortran 95 runtime library (libgfortran).
+
+Libgfortran is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+In addition to the permissions in the GNU General Public License, the
+Free Software Foundation gives you unlimited permission to link the
+compiled version of this file into combinations with other programs,
+and to distribute those combinations without any restriction coming
+from the use of this file.  (The General Public License restrictions
+do apply in other respects; for example, they cover modification of
+the file, and distribution when not linked into a combine
+executable.)
+
+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 General Public License for more details.
+
+You should have received a copy of the GNU General Public
+License along with libgfortran; see the file COPYING.  If not,
+write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA.  */
+
+#include "config.h"
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+#include "libgfortran.h"
+
+/* PACK is specified as follows:
+
+   13.14.80 PACK (ARRAY, MASK, [VECTOR])
+
+   Description: Pack an array into an array of rank one under the
+   control of a mask.
+
+   Class: Transformational function.
+
+   Arguments:
+      ARRAY   may be of any type. It shall not be scalar.
+      MASK    shall be of type LOGICAL. It shall be conformable with ARRAY.
+      VECTOR  (optional) shall be of the same type and type parameters
+              as ARRAY. VECTOR shall have at least as many elements as
+              there are true elements in MASK. If MASK is a scalar
+              with the value true, VECTOR shall have at least as many
+              elements as there are in ARRAY.
+
+   Result Characteristics: The result is an array of rank one with the
+   same type and type parameters as ARRAY. If VECTOR is present, the
+   result size is that of VECTOR; otherwise, the result size is the
+   number /t/ of true elements in MASK unless MASK is scalar with the
+   value true, in which case the result size is the size of ARRAY.
+
+   Result Value: Element /i/ of the result is the element of ARRAY
+   that corresponds to the /i/th true element of MASK, taking elements
+   in array element order, for /i/ = 1, 2, ..., /t/. If VECTOR is
+   present and has size /n/ > /t/, element /i/ of the result has the
+   value VECTOR(/i/), for /i/ = /t/ + 1, ..., /n/.
+
+   Examples: The nonzero elements of an array M with the value
+   | 0 0 0 |
+   | 9 0 0 | may be "gathered" by the function PACK. The result of
+   | 0 0 7 |
+   PACK (M, MASK = M.NE.0) is [9,7] and the result of PACK (M, M.NE.0,
+   VECTOR = (/ 2,4,6,8,10,12 /)) is [9,7,6,8,10,12].
+
+There are two variants of the PACK intrinsic: one, where MASK is
+array valued, and the other one where MASK is scalar.  */
+
+static void
+pack_internal (gfc_array_char *ret, const gfc_array_char *array,
+	       const gfc_array_l4 *mask, const gfc_array_char *vector,
+	       index_type size)
+{
+  /* r.* indicates the return array.  */
+  index_type rstride0;
+  char *rptr;
+  /* s.* indicates the source array.  */
+  index_type sstride[GFC_MAX_DIMENSIONS];
+  index_type sstride0;
+  const char *sptr;
+  /* m.* indicates the mask array.  */
+  index_type mstride[GFC_MAX_DIMENSIONS];
+  index_type mstride0;
+  const GFC_LOGICAL_4 *mptr;
+
+  index_type count[GFC_MAX_DIMENSIONS];
+  index_type extent[GFC_MAX_DIMENSIONS];
+  int zero_sized;
+  index_type n;
+  index_type dim;
+  index_type nelem;
+
+  dim = GFC_DESCRIPTOR_RANK (array);
+  zero_sized = 0;
+  for (n = 0; n < dim; n++)
+    {
+      count[n] = 0;
+      extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
+      if (extent[n] <= 0)
+       zero_sized = 1;
+      sstride[n] = array->dim[n].stride * size;
+      mstride[n] = mask->dim[n].stride;
+    }
+  if (sstride[0] == 0)
+    sstride[0] = size;
+  if (mstride[0] == 0)
+    mstride[0] = 1;
+
+  sptr = array->data;
+  mptr = mask->data;
+
+  /* Use the same loop for both logical types. */
+  if (GFC_DESCRIPTOR_SIZE (mask) != 4)
+    {
+      if (GFC_DESCRIPTOR_SIZE (mask) != 8)
+        runtime_error ("Funny sized logical array");
+      for (n = 0; n < dim; n++)
+        mstride[n] <<= 1;
+      mptr = GFOR_POINTER_L8_TO_L4 (mptr);
+    }
+
+  if (ret->data == NULL)
+    {
+      /* Allocate the memory for the result.  */
+      int total;
+
+      if (vector != NULL)
+	{
+	  /* The return array will have as many
+	     elements as there are in VECTOR.  */
+	  total = vector->dim[0].ubound + 1 - vector->dim[0].lbound;
+	}
+      else
+	{
+	  /* We have to count the true elements in MASK.  */
+
+	  /* TODO: We could speed up pack easily in the case of only
+	     few .TRUE. entries in MASK, by keeping track of where we
+	     would be in the source array during the initial traversal
+	     of MASK, and caching the pointers to those elements. Then,
+	     supposed the number of elements is small enough, we would
+	     only have to traverse the list, and copy those elements
+	     into the result array. In the case of datatypes which fit
+	     in one of the integer types we could also cache the
+	     value instead of a pointer to it.
+	     This approach might be bad from the point of view of
+	     cache behavior in the case where our cache is not big
+	     enough to hold all elements that have to be copied.  */
+
+	  const GFC_LOGICAL_4 *m = mptr;
+
+	  total = 0;
+	  if (zero_sized)
+	    m = NULL;
+
+	  while (m)
+	    {
+	      /* Test this element.  */
+	      if (*m)
+		total++;
+
+	      /* Advance to the next element.  */
+	      m += mstride[0];
+	      count[0]++;
+	      n = 0;
+	      while (count[n] == extent[n])
+		{
+		  /* When we get to the end of a dimension, reset it
+		     and increment the next dimension.  */
+		  count[n] = 0;
+		  /* We could precalculate this product, but this is a
+		     less frequently used path so probably not worth
+		     it.  */
+		  m -= mstride[n] * extent[n];
+		  n++;
+		  if (n >= dim)
+		    {
+		      /* Break out of the loop.  */
+		      m = NULL;
+		      break;
+		    }
+		  else
+		    {
+		      count[n]++;
+		      m += mstride[n];
+		    }
+		}
+	    }
+	}
+
+      /* Setup the array descriptor.  */
+      ret->dim[0].lbound = 0;
+      ret->dim[0].ubound = total - 1;
+      ret->dim[0].stride = 1;
+
+      ret->offset = 0;
+      if (total == 0)
+	{
+	  /* In this case, nothing remains to be done.  */
+	  ret->data = internal_malloc_size (1);
+	  return;
+	}
+      else
+	ret->data = internal_malloc_size (size * total);
+    }
+
+  rstride0 = ret->dim[0].stride * size;
+  if (rstride0 == 0)
+    rstride0 = size;
+  sstride0 = sstride[0];
+  mstride0 = mstride[0];
+  rptr = ret->data;
+
+  while (sptr && mptr)
+    {
+      /* Test this element.  */
+      if (*mptr)
+        {
+          /* Add it.  */
+          memcpy (rptr, sptr, size);
+          rptr += rstride0;
+        }
+      /* Advance to the next element.  */
+      sptr += sstride0;
+      mptr += mstride0;
+      count[0]++;
+      n = 0;
+      while (count[n] == extent[n])
+        {
+          /* When we get to the end of a dimension, reset it and increment
+             the next dimension.  */
+          count[n] = 0;
+          /* We could precalculate these products, but this is a less
+             frequently used path so probably not worth it.  */
+          sptr -= sstride[n] * extent[n];
+          mptr -= mstride[n] * extent[n];
+          n++;
+          if (n >= dim)
+            {
+              /* Break out of the loop.  */
+              sptr = NULL;
+              break;
+            }
+          else
+            {
+              count[n]++;
+              sptr += sstride[n];
+              mptr += mstride[n];
+            }
+        }
+    }
+
+  /* Add any remaining elements from VECTOR.  */
+  if (vector)
+    {
+      n = vector->dim[0].ubound + 1 - vector->dim[0].lbound;
+      nelem = ((rptr - ret->data) / rstride0);
+      if (n > nelem)
+        {
+          sstride0 = vector->dim[0].stride * size;
+          if (sstride0 == 0)
+            sstride0 = size;
+
+          sptr = vector->data + sstride0 * nelem;
+          n -= nelem;
+          while (n--)
+            {
+              memcpy (rptr, sptr, size);
+              rptr += rstride0;
+              sptr += sstride0;
+            }
+        }
+    }
+}
+
+extern void pack (gfc_array_char *, const gfc_array_char *,
+		  const gfc_array_l4 *, const gfc_array_char *);
+export_proto(pack);
+
+void
+pack (gfc_array_char *ret, const gfc_array_char *array,
+      const gfc_array_l4 *mask, const gfc_array_char *vector)
+{
+  pack_internal (ret, array, mask, vector, GFC_DESCRIPTOR_SIZE (array));
+}
+
+extern void pack_char (gfc_array_char *, GFC_INTEGER_4, const gfc_array_char *,
+		       const gfc_array_l4 *, const gfc_array_char *,
+		       GFC_INTEGER_4, GFC_INTEGER_4);
+export_proto(pack_char);
+
+void
+pack_char (gfc_array_char *ret,
+	   GFC_INTEGER_4 ret_length __attribute__((unused)),
+	   const gfc_array_char *array, const gfc_array_l4 *mask,
+	   const gfc_array_char *vector, GFC_INTEGER_4 array_length,
+	   GFC_INTEGER_4 vector_length __attribute__((unused)))
+{
+  pack_internal (ret, array, mask, vector, array_length);
+}
+
+static void
+pack_s_internal (gfc_array_char *ret, const gfc_array_char *array,
+		 const GFC_LOGICAL_4 *mask, const gfc_array_char *vector,
+		 index_type size)
+{
+  /* r.* indicates the return array.  */
+  index_type rstride0;
+  char *rptr;
+  /* s.* indicates the source array.  */
+  index_type sstride[GFC_MAX_DIMENSIONS];
+  index_type sstride0;
+  const char *sptr;
+
+  index_type count[GFC_MAX_DIMENSIONS];
+  index_type extent[GFC_MAX_DIMENSIONS];
+  index_type n;
+  index_type dim;
+  index_type ssize;
+  index_type nelem;
+
+  dim = GFC_DESCRIPTOR_RANK (array);
+  ssize = 1;
+  for (n = 0; n < dim; n++)
+    {
+      count[n] = 0;
+      extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
+      sstride[n] = array->dim[n].stride * size;
+      ssize *= extent[n];
+    }
+  if (sstride[0] == 0)
+    sstride[0] = size;
+
+  sstride0 = sstride[0];
+  sptr = array->data;
+
+  if (ret->data == NULL)
+    {
+      /* Allocate the memory for the result.  */
+      int total;
+
+      if (vector != NULL)
+	{
+	  /* The return array will have as many elements as there are
+	     in vector.  */
+	  total = vector->dim[0].ubound + 1 - vector->dim[0].lbound;
+	}
+      else
+	{
+	  if (*mask)
+	    {
+	      /* The result array will have as many elements as the input
+		 array.  */
+	      total = extent[0];
+	      for (n = 1; n < dim; n++)
+		total *= extent[n];
+	    }
+	  else
+	    /* The result array will be empty.  */
+	    total = 0;
+	}
+
+      /* Setup the array descriptor.  */
+      ret->dim[0].lbound = 0;
+      ret->dim[0].ubound = total - 1;
+      ret->dim[0].stride = 1;
+      ret->offset = 0;
+
+      if (total == 0)
+	{
+	  ret->data = internal_malloc_size (1);
+	  return;
+	}
+      else
+	ret->data = internal_malloc_size (size * total);
+    }
+
+  rstride0 = ret->dim[0].stride * size;
+  if (rstride0 == 0)
+    rstride0 = size;
+  rptr = ret->data;
+
+  /* The remaining possibilities are now:
+       If MASK is .TRUE., we have to copy the source array into the
+     result array. We then have to fill it up with elements from VECTOR.
+       If MASK is .FALSE., we have to copy VECTOR into the result
+     array. If VECTOR were not present we would have already returned.  */
+
+  if (*mask && ssize != 0)
+    {
+      while (sptr)
+	{
+	  /* Add this element.  */
+	  memcpy (rptr, sptr, size);
+	  rptr += rstride0;
+
+	  /* Advance to the next element.  */
+	  sptr += sstride0;
+	  count[0]++;
+	  n = 0;
+	  while (count[n] == extent[n])
+	    {
+	      /* When we get to the end of a dimension, reset it and
+		 increment the next dimension.  */
+	      count[n] = 0;
+	      /* We could precalculate these products, but this is a
+		 less frequently used path so probably not worth it.  */
+	      sptr -= sstride[n] * extent[n];
+	      n++;
+	      if (n >= dim)
+		{
+		  /* Break out of the loop.  */
+		  sptr = NULL;
+		  break;
+		}
+	      else
+		{
+		  count[n]++;
+		  sptr += sstride[n];
+		}
+	    }
+	}
+    }
+
+  /* Add any remaining elements from VECTOR.  */
+  if (vector)
+    {
+      n = vector->dim[0].ubound + 1 - vector->dim[0].lbound;
+      nelem = ((rptr - ret->data) / rstride0);
+      if (n > nelem)
+        {
+          sstride0 = vector->dim[0].stride * size;
+          if (sstride0 == 0)
+            sstride0 = size;
+
+          sptr = vector->data + sstride0 * nelem;
+          n -= nelem;
+          while (n--)
+            {
+              memcpy (rptr, sptr, size);
+              rptr += rstride0;
+              sptr += sstride0;
+            }
+        }
+    }
+}
+
+extern void pack_s (gfc_array_char *ret, const gfc_array_char *array,
+		    const GFC_LOGICAL_4 *, const gfc_array_char *);
+export_proto(pack_s);
+
+void
+pack_s (gfc_array_char *ret, const gfc_array_char *array,
+	const GFC_LOGICAL_4 *mask, const gfc_array_char *vector)
+{
+  pack_s_internal (ret, array, mask, vector, GFC_DESCRIPTOR_SIZE (array));
+}
+
+extern void pack_s_char (gfc_array_char *ret, GFC_INTEGER_4,
+			 const gfc_array_char *array, const GFC_LOGICAL_4 *,
+			 const gfc_array_char *, GFC_INTEGER_4,
+			 GFC_INTEGER_4);
+export_proto(pack_s_char);
+
+void
+pack_s_char (gfc_array_char *ret,
+	     GFC_INTEGER_4 ret_length __attribute__((unused)),
+	     const gfc_array_char *array, const GFC_LOGICAL_4 *mask,
+	     const gfc_array_char *vector, GFC_INTEGER_4 array_length,
+	     GFC_INTEGER_4 vector_length __attribute__((unused)))
+{
+  pack_s_internal (ret, array, mask, vector, array_length);
+}