2008-03-19 Thomas Koenig <tkoenig@gcc.gnu.org>

	PR libfortran/32972
	* Makefile.am (in_pack_c): Add in_pack_i1.c, in_pack_i2.c,
	in_pack_r4.c, in_pack_r8.c, in_pack_r10.c and in_pack_r16.c.
	(in_unpack_c): Add in_unpack_i1.c, in_unpack_i2.c,
	in_unpack_r4.c, in_unpack_r8.c, in_unpack_r10.c and
	in_unpack_r16.c.
	* Makefile.in: Regenerate.
	* libgfortran.h:  Add prototypes for internal_pack_1,
	internal_pack_2, internal_pack_16, internal_pack_r4,
	internal_pack_r8, internal_pack_r10, internal_pack_r16,
	internal_pack_c10 and internal_pack_c16.  Add prototypes for
	internal_unpack_1, internal_unpack_2, internal_unpack_16,
	internal_unpack_r4, internal_unpack_r8, internal_unpack_r10,
	internal_unpack_r16, internal_unpack_c10 and
	internal_unpack_c16.
	* runtime/in_pack_generic.c (internal_pack): Use sizeof instead
	of hardwired sizes.
	Add calls to internal_pack_1, internal_pack_2,
	internal_pack_16, internal_pack_r4, internal_pack_r8,
	internal_pack_r10, internal_pack_r16, internal_pack_c10 and
	internal_pack_c16.
	* runtime/in_unpack_generic.c (internal_unpack):  Use sizeof
	instead of hardwired sizes.
	Add calls to internal_unpack_1, internal_unpack_2,
	internal_unpack_16, internal_unpack_r4, internal_unpack_r8,
	internal_unpack_r10, internal_unpack_r16, internal_unpack_c10
	and internal_unpack_c16.
	* generated/in_pack_r4.c:  New file.
	* generated/in_pack_i2.c:  New file.
	* generated/in_unpack_i1.c:  New file.
	* generated/in_pack_r10.c:  New file.
	* generated/in_unpack_r4.c:  New file.
	* generated/in_unpack_i2.c:  New file.
	* generated/in_unpack_r16.c:  New file.
	* generated/in_pack_r8.c:  New file.
	* generated/in_unpack_r10.c:  New file.
	* generated/in_unpack_r8.c:  New file.
	* generated/in_pack_r16.c:  New file.
	* generated/in_pack_i1.c:  New file.

2008-03-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR libfortran/32972
	* gfortran.dg/internal_pack_1.f90:  New test case.
	* gfortran.dg/internal_pack_2.f90:  New test case.
	* gfortran.dg/internal_pack_3.f90:  New test case.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@133344 138bc75d-0d04-0410-961f-82ee72b054a4

12 files changed, 1416 insertions, 0 deletions

diff --git a/libgfortran/generated/in_pack_i1.c b/libgfortran/generated/in_pack_i1.c
new file mode 100644
index 00000000000..b5be016cf37
--- /dev/null
+++ b/libgfortran/generated/in_pack_i1.c
@@ -0,0 +1,124 @@
+/* Helper function for repacking arrays.
+   Copyright 2003, 2006, 2007 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.)
+
+Libgfortran 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 "libgfortran.h"
+#include <stdlib.h>
+#include <assert.h>
+
+
+#if defined (HAVE_GFC_INTEGER_1)
+
+/* Allocates a block of memory with internal_malloc if the array needs
+   repacking.  */
+
+GFC_INTEGER_1 *
+internal_pack_1 (gfc_array_i1 * source)
+{
+  index_type count[GFC_MAX_DIMENSIONS];
+  index_type extent[GFC_MAX_DIMENSIONS];
+  index_type stride[GFC_MAX_DIMENSIONS];
+  index_type stride0;
+  index_type dim;
+  index_type ssize;
+  const GFC_INTEGER_1 *src;
+  GFC_INTEGER_1 *dest;
+  GFC_INTEGER_1 *destptr;
+  int n;
+  int packed;
+
+  /* TODO: Investigate how we can figure out if this is a temporary
+     since the stride=0 thing has been removed from the frontend.  */
+
+  dim = GFC_DESCRIPTOR_RANK (source);
+  ssize = 1;
+  packed = 1;
+  for (n = 0; n < dim; n++)
+    {
+      count[n] = 0;
+      stride[n] = source->dim[n].stride;
+      extent[n] = source->dim[n].ubound + 1 - source->dim[n].lbound;
+      if (extent[n] <= 0)
+        {
+          /* Do nothing.  */
+          packed = 1;
+          break;
+        }
+
+      if (ssize != stride[n])
+        packed = 0;
+
+      ssize *= extent[n];
+    }
+
+  if (packed)
+    return source->data;
+
+  /* Allocate storage for the destination.  */
+  destptr = (GFC_INTEGER_1 *)internal_malloc_size (ssize * sizeof (GFC_INTEGER_1));
+  dest = destptr;
+  src = source->data;
+  stride0 = stride[0];
+
+
+  while (src)
+    {
+      /* Copy the data.  */
+      *(dest++) = *src;
+      /* Advance to the next element.  */
+      src += stride0;
+      count[0]++;
+      /* Advance to the next source element.  */
+      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.  */
+          src -= stride[n] * extent[n];
+          n++;
+          if (n == dim)
+            {
+              src = NULL;
+              break;
+            }
+          else
+            {
+              count[n]++;
+              src += stride[n];
+            }
+        }
+    }
+  return destptr;
+}
+
+#endif
+
diff --git a/libgfortran/generated/in_pack_i2.c b/libgfortran/generated/in_pack_i2.c
new file mode 100644
index 00000000000..240409a357e
--- /dev/null
+++ b/libgfortran/generated/in_pack_i2.c
@@ -0,0 +1,124 @@
+/* Helper function for repacking arrays.
+   Copyright 2003, 2006, 2007 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.)
+
+Libgfortran 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 "libgfortran.h"
+#include <stdlib.h>
+#include <assert.h>
+
+
+#if defined (HAVE_GFC_INTEGER_2)
+
+/* Allocates a block of memory with internal_malloc if the array needs
+   repacking.  */
+
+GFC_INTEGER_2 *
+internal_pack_2 (gfc_array_i2 * source)
+{
+  index_type count[GFC_MAX_DIMENSIONS];
+  index_type extent[GFC_MAX_DIMENSIONS];
+  index_type stride[GFC_MAX_DIMENSIONS];
+  index_type stride0;
+  index_type dim;
+  index_type ssize;
+  const GFC_INTEGER_2 *src;
+  GFC_INTEGER_2 *dest;
+  GFC_INTEGER_2 *destptr;
+  int n;
+  int packed;
+
+  /* TODO: Investigate how we can figure out if this is a temporary
+     since the stride=0 thing has been removed from the frontend.  */
+
+  dim = GFC_DESCRIPTOR_RANK (source);
+  ssize = 1;
+  packed = 1;
+  for (n = 0; n < dim; n++)
+    {
+      count[n] = 0;
+      stride[n] = source->dim[n].stride;
+      extent[n] = source->dim[n].ubound + 1 - source->dim[n].lbound;
+      if (extent[n] <= 0)
+        {
+          /* Do nothing.  */
+          packed = 1;
+          break;
+        }
+
+      if (ssize != stride[n])
+        packed = 0;
+
+      ssize *= extent[n];
+    }
+
+  if (packed)
+    return source->data;
+
+  /* Allocate storage for the destination.  */
+  destptr = (GFC_INTEGER_2 *)internal_malloc_size (ssize * sizeof (GFC_INTEGER_2));
+  dest = destptr;
+  src = source->data;
+  stride0 = stride[0];
+
+
+  while (src)
+    {
+      /* Copy the data.  */
+      *(dest++) = *src;
+      /* Advance to the next element.  */
+      src += stride0;
+      count[0]++;
+      /* Advance to the next source element.  */
+      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.  */
+          src -= stride[n] * extent[n];
+          n++;
+          if (n == dim)
+            {
+              src = NULL;
+              break;
+            }
+          else
+            {
+              count[n]++;
+              src += stride[n];
+            }
+        }
+    }
+  return destptr;
+}
+
+#endif
+
diff --git a/libgfortran/generated/in_pack_r10.c b/libgfortran/generated/in_pack_r10.c
new file mode 100644
index 00000000000..892c6bb9dc5
--- /dev/null
+++ b/libgfortran/generated/in_pack_r10.c
@@ -0,0 +1,124 @@
+/* Helper function for repacking arrays.
+   Copyright 2003, 2006, 2007 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.)
+
+Libgfortran 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 "libgfortran.h"
+#include <stdlib.h>
+#include <assert.h>
+
+
+#if defined (HAVE_GFC_REAL_10)
+
+/* Allocates a block of memory with internal_malloc if the array needs
+   repacking.  */
+
+GFC_REAL_10 *
+internal_pack_r10 (gfc_array_r10 * source)
+{
+  index_type count[GFC_MAX_DIMENSIONS];
+  index_type extent[GFC_MAX_DIMENSIONS];
+  index_type stride[GFC_MAX_DIMENSIONS];
+  index_type stride0;
+  index_type dim;
+  index_type ssize;
+  const GFC_REAL_10 *src;
+  GFC_REAL_10 *dest;
+  GFC_REAL_10 *destptr;
+  int n;
+  int packed;
+
+  /* TODO: Investigate how we can figure out if this is a temporary
+     since the stride=0 thing has been removed from the frontend.  */
+
+  dim = GFC_DESCRIPTOR_RANK (source);
+  ssize = 1;
+  packed = 1;
+  for (n = 0; n < dim; n++)
+    {
+      count[n] = 0;
+      stride[n] = source->dim[n].stride;
+      extent[n] = source->dim[n].ubound + 1 - source->dim[n].lbound;
+      if (extent[n] <= 0)
+        {
+          /* Do nothing.  */
+          packed = 1;
+          break;
+        }
+
+      if (ssize != stride[n])
+        packed = 0;
+
+      ssize *= extent[n];
+    }
+
+  if (packed)
+    return source->data;
+
+  /* Allocate storage for the destination.  */
+  destptr = (GFC_REAL_10 *)internal_malloc_size (ssize * sizeof (GFC_REAL_10));
+  dest = destptr;
+  src = source->data;
+  stride0 = stride[0];
+
+
+  while (src)
+    {
+      /* Copy the data.  */
+      *(dest++) = *src;
+      /* Advance to the next element.  */
+      src += stride0;
+      count[0]++;
+      /* Advance to the next source element.  */
+      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.  */
+          src -= stride[n] * extent[n];
+          n++;
+          if (n == dim)
+            {
+              src = NULL;
+              break;
+            }
+          else
+            {
+              count[n]++;
+              src += stride[n];
+            }
+        }
+    }
+  return destptr;
+}
+
+#endif
+
diff --git a/libgfortran/generated/in_pack_r16.c b/libgfortran/generated/in_pack_r16.c
new file mode 100644
index 00000000000..15ab585050f
--- /dev/null
+++ b/libgfortran/generated/in_pack_r16.c
@@ -0,0 +1,124 @@
+/* Helper function for repacking arrays.
+   Copyright 2003, 2006, 2007 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.)
+
+Libgfortran 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 "libgfortran.h"
+#include <stdlib.h>
+#include <assert.h>
+
+
+#if defined (HAVE_GFC_REAL_16)
+
+/* Allocates a block of memory with internal_malloc if the array needs
+   repacking.  */
+
+GFC_REAL_16 *
+internal_pack_r16 (gfc_array_r16 * source)
+{
+  index_type count[GFC_MAX_DIMENSIONS];
+  index_type extent[GFC_MAX_DIMENSIONS];
+  index_type stride[GFC_MAX_DIMENSIONS];
+  index_type stride0;
+  index_type dim;
+  index_type ssize;
+  const GFC_REAL_16 *src;
+  GFC_REAL_16 *dest;
+  GFC_REAL_16 *destptr;
+  int n;
+  int packed;
+
+  /* TODO: Investigate how we can figure out if this is a temporary
+     since the stride=0 thing has been removed from the frontend.  */
+
+  dim = GFC_DESCRIPTOR_RANK (source);
+  ssize = 1;
+  packed = 1;
+  for (n = 0; n < dim; n++)
+    {
+      count[n] = 0;
+      stride[n] = source->dim[n].stride;
+      extent[n] = source->dim[n].ubound + 1 - source->dim[n].lbound;
+      if (extent[n] <= 0)
+        {
+          /* Do nothing.  */
+          packed = 1;
+          break;
+        }
+
+      if (ssize != stride[n])
+        packed = 0;
+
+      ssize *= extent[n];
+    }
+
+  if (packed)
+    return source->data;
+
+  /* Allocate storage for the destination.  */
+  destptr = (GFC_REAL_16 *)internal_malloc_size (ssize * sizeof (GFC_REAL_16));
+  dest = destptr;
+  src = source->data;
+  stride0 = stride[0];
+
+
+  while (src)
+    {
+      /* Copy the data.  */
+      *(dest++) = *src;
+      /* Advance to the next element.  */
+      src += stride0;
+      count[0]++;
+      /* Advance to the next source element.  */
+      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.  */
+          src -= stride[n] * extent[n];
+          n++;
+          if (n == dim)
+            {
+              src = NULL;
+              break;
+            }
+          else
+            {
+              count[n]++;
+              src += stride[n];
+            }
+        }
+    }
+  return destptr;
+}
+
+#endif
+
diff --git a/libgfortran/generated/in_pack_r4.c b/libgfortran/generated/in_pack_r4.c
new file mode 100644
index 00000000000..a1f352c4fdd
--- /dev/null
+++ b/libgfortran/generated/in_pack_r4.c
@@ -0,0 +1,124 @@
+/* Helper function for repacking arrays.
+   Copyright 2003, 2006, 2007 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.)
+
+Libgfortran 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 "libgfortran.h"
+#include <stdlib.h>
+#include <assert.h>
+
+
+#if defined (HAVE_GFC_REAL_4)
+
+/* Allocates a block of memory with internal_malloc if the array needs
+   repacking.  */
+
+GFC_REAL_4 *
+internal_pack_r4 (gfc_array_r4 * source)
+{
+  index_type count[GFC_MAX_DIMENSIONS];
+  index_type extent[GFC_MAX_DIMENSIONS];
+  index_type stride[GFC_MAX_DIMENSIONS];
+  index_type stride0;
+  index_type dim;
+  index_type ssize;
+  const GFC_REAL_4 *src;
+  GFC_REAL_4 *dest;
+  GFC_REAL_4 *destptr;
+  int n;
+  int packed;
+
+  /* TODO: Investigate how we can figure out if this is a temporary
+     since the stride=0 thing has been removed from the frontend.  */
+
+  dim = GFC_DESCRIPTOR_RANK (source);
+  ssize = 1;
+  packed = 1;
+  for (n = 0; n < dim; n++)
+    {
+      count[n] = 0;
+      stride[n] = source->dim[n].stride;
+      extent[n] = source->dim[n].ubound + 1 - source->dim[n].lbound;
+      if (extent[n] <= 0)
+        {
+          /* Do nothing.  */
+          packed = 1;
+          break;
+        }
+
+      if (ssize != stride[n])
+        packed = 0;
+
+      ssize *= extent[n];
+    }
+
+  if (packed)
+    return source->data;
+
+  /* Allocate storage for the destination.  */
+  destptr = (GFC_REAL_4 *)internal_malloc_size (ssize * sizeof (GFC_REAL_4));
+  dest = destptr;
+  src = source->data;
+  stride0 = stride[0];
+
+
+  while (src)
+    {
+      /* Copy the data.  */
+      *(dest++) = *src;
+      /* Advance to the next element.  */
+      src += stride0;
+      count[0]++;
+      /* Advance to the next source element.  */
+      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.  */
+          src -= stride[n] * extent[n];
+          n++;
+          if (n == dim)
+            {
+              src = NULL;
+              break;
+            }
+          else
+            {
+              count[n]++;
+              src += stride[n];
+            }
+        }
+    }
+  return destptr;
+}
+
+#endif
+
diff --git a/libgfortran/generated/in_pack_r8.c b/libgfortran/generated/in_pack_r8.c
new file mode 100644
index 00000000000..76cee7afe86
--- /dev/null
+++ b/libgfortran/generated/in_pack_r8.c
@@ -0,0 +1,124 @@
+/* Helper function for repacking arrays.
+   Copyright 2003, 2006, 2007 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.)
+
+Libgfortran 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 "libgfortran.h"
+#include <stdlib.h>
+#include <assert.h>
+
+
+#if defined (HAVE_GFC_REAL_8)
+
+/* Allocates a block of memory with internal_malloc if the array needs
+   repacking.  */
+
+GFC_REAL_8 *
+internal_pack_r8 (gfc_array_r8 * source)
+{
+  index_type count[GFC_MAX_DIMENSIONS];
+  index_type extent[GFC_MAX_DIMENSIONS];
+  index_type stride[GFC_MAX_DIMENSIONS];
+  index_type stride0;
+  index_type dim;
+  index_type ssize;
+  const GFC_REAL_8 *src;
+  GFC_REAL_8 *dest;
+  GFC_REAL_8 *destptr;
+  int n;
+  int packed;
+
+  /* TODO: Investigate how we can figure out if this is a temporary
+     since the stride=0 thing has been removed from the frontend.  */
+
+  dim = GFC_DESCRIPTOR_RANK (source);
+  ssize = 1;
+  packed = 1;
+  for (n = 0; n < dim; n++)
+    {
+      count[n] = 0;
+      stride[n] = source->dim[n].stride;
+      extent[n] = source->dim[n].ubound + 1 - source->dim[n].lbound;
+      if (extent[n] <= 0)
+        {
+          /* Do nothing.  */
+          packed = 1;
+          break;
+        }
+
+      if (ssize != stride[n])
+        packed = 0;
+
+      ssize *= extent[n];
+    }
+
+  if (packed)
+    return source->data;
+
+  /* Allocate storage for the destination.  */
+  destptr = (GFC_REAL_8 *)internal_malloc_size (ssize * sizeof (GFC_REAL_8));
+  dest = destptr;
+  src = source->data;
+  stride0 = stride[0];
+
+
+  while (src)
+    {
+      /* Copy the data.  */
+      *(dest++) = *src;
+      /* Advance to the next element.  */
+      src += stride0;
+      count[0]++;
+      /* Advance to the next source element.  */
+      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.  */
+          src -= stride[n] * extent[n];
+          n++;
+          if (n == dim)
+            {
+              src = NULL;
+              break;
+            }
+          else
+            {
+              count[n]++;
+              src += stride[n];
+            }
+        }
+    }
+  return destptr;
+}
+
+#endif
+
diff --git a/libgfortran/generated/in_unpack_i1.c b/libgfortran/generated/in_unpack_i1.c
new file mode 100644
index 00000000000..4b455b73d28
--- /dev/null
+++ b/libgfortran/generated/in_unpack_i1.c
@@ -0,0 +1,112 @@
+/* Helper function for repacking arrays.
+   Copyright 2003, 2006, 2007 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.)
+
+Libgfortran 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 "libgfortran.h"
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+
+
+#if defined (HAVE_GFC_INTEGER_1)
+
+void
+internal_unpack_1 (gfc_array_i1 * d, const GFC_INTEGER_1 * src)
+{
+  index_type count[GFC_MAX_DIMENSIONS];
+  index_type extent[GFC_MAX_DIMENSIONS];
+  index_type stride[GFC_MAX_DIMENSIONS];
+  index_type stride0;
+  index_type dim;
+  index_type dsize;
+  GFC_INTEGER_1 *dest;
+  int n;
+
+  dest = d->data;
+  if (src == dest || !src)
+    return;
+
+  dim = GFC_DESCRIPTOR_RANK (d);
+  dsize = 1;
+  for (n = 0; n < dim; n++)
+    {
+      count[n] = 0;
+      stride[n] = d->dim[n].stride;
+      extent[n] = d->dim[n].ubound + 1 - d->dim[n].lbound;
+      if (extent[n] <= 0)
+        abort ();
+
+      if (dsize == stride[n])
+        dsize *= extent[n];
+      else
+        dsize = 0;
+    }
+
+  if (dsize != 0)
+    {
+      memcpy (dest, src, dsize * sizeof (GFC_INTEGER_1));
+      return;
+    }
+
+  stride0 = stride[0];
+
+  while (dest)
+    {
+      /* Copy the data.  */
+      *dest = *(src++);
+      /* Advance to the next element.  */
+      dest += stride0;
+      count[0]++;
+      /* Advance to the next source element.  */
+      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.  */
+          dest -= stride[n] * extent[n];
+          n++;
+          if (n == dim)
+            {
+              dest = NULL;
+              break;
+            }
+          else
+            {
+              count[n]++;
+              dest += stride[n];
+            }
+        }
+    }
+}
+
+#endif
+
diff --git a/libgfortran/generated/in_unpack_i2.c b/libgfortran/generated/in_unpack_i2.c
new file mode 100644
index 00000000000..91e6fca9ded
--- /dev/null
+++ b/libgfortran/generated/in_unpack_i2.c
@@ -0,0 +1,112 @@
+/* Helper function for repacking arrays.
+   Copyright 2003, 2006, 2007 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.)
+
+Libgfortran 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 "libgfortran.h"
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+
+
+#if defined (HAVE_GFC_INTEGER_2)
+
+void
+internal_unpack_2 (gfc_array_i2 * d, const GFC_INTEGER_2 * src)
+{
+  index_type count[GFC_MAX_DIMENSIONS];
+  index_type extent[GFC_MAX_DIMENSIONS];
+  index_type stride[GFC_MAX_DIMENSIONS];
+  index_type stride0;
+  index_type dim;
+  index_type dsize;
+  GFC_INTEGER_2 *dest;
+  int n;
+
+  dest = d->data;
+  if (src == dest || !src)
+    return;
+
+  dim = GFC_DESCRIPTOR_RANK (d);
+  dsize = 1;
+  for (n = 0; n < dim; n++)
+    {
+      count[n] = 0;
+      stride[n] = d->dim[n].stride;
+      extent[n] = d->dim[n].ubound + 1 - d->dim[n].lbound;
+      if (extent[n] <= 0)
+        abort ();
+
+      if (dsize == stride[n])
+        dsize *= extent[n];
+      else
+        dsize = 0;
+    }
+
+  if (dsize != 0)
+    {
+      memcpy (dest, src, dsize * sizeof (GFC_INTEGER_2));
+      return;
+    }
+
+  stride0 = stride[0];
+
+  while (dest)
+    {
+      /* Copy the data.  */
+      *dest = *(src++);
+      /* Advance to the next element.  */
+      dest += stride0;
+      count[0]++;
+      /* Advance to the next source element.  */
+      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.  */
+          dest -= stride[n] * extent[n];
+          n++;
+          if (n == dim)
+            {
+              dest = NULL;
+              break;
+            }
+          else
+            {
+              count[n]++;
+              dest += stride[n];
+            }
+        }
+    }
+}
+
+#endif
+
diff --git a/libgfortran/generated/in_unpack_r10.c b/libgfortran/generated/in_unpack_r10.c
new file mode 100644
index 00000000000..5514763146f
--- /dev/null
+++ b/libgfortran/generated/in_unpack_r10.c
@@ -0,0 +1,112 @@
+/* Helper function for repacking arrays.
+   Copyright 2003, 2006, 2007 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.)
+
+Libgfortran 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 "libgfortran.h"
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+
+
+#if defined (HAVE_GFC_REAL_10)
+
+void
+internal_unpack_r10 (gfc_array_r10 * d, const GFC_REAL_10 * src)
+{
+  index_type count[GFC_MAX_DIMENSIONS];
+  index_type extent[GFC_MAX_DIMENSIONS];
+  index_type stride[GFC_MAX_DIMENSIONS];
+  index_type stride0;
+  index_type dim;
+  index_type dsize;
+  GFC_REAL_10 *dest;
+  int n;
+
+  dest = d->data;
+  if (src == dest || !src)
+    return;
+
+  dim = GFC_DESCRIPTOR_RANK (d);
+  dsize = 1;
+  for (n = 0; n < dim; n++)
+    {
+      count[n] = 0;
+      stride[n] = d->dim[n].stride;
+      extent[n] = d->dim[n].ubound + 1 - d->dim[n].lbound;
+      if (extent[n] <= 0)
+        abort ();
+
+      if (dsize == stride[n])
+        dsize *= extent[n];
+      else
+        dsize = 0;
+    }
+
+  if (dsize != 0)
+    {
+      memcpy (dest, src, dsize * sizeof (GFC_REAL_10));
+      return;
+    }
+
+  stride0 = stride[0];
+
+  while (dest)
+    {
+      /* Copy the data.  */
+      *dest = *(src++);
+      /* Advance to the next element.  */
+      dest += stride0;
+      count[0]++;
+      /* Advance to the next source element.  */
+      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.  */
+          dest -= stride[n] * extent[n];
+          n++;
+          if (n == dim)
+            {
+              dest = NULL;
+              break;
+            }
+          else
+            {
+              count[n]++;
+              dest += stride[n];
+            }
+        }
+    }
+}
+
+#endif
+
diff --git a/libgfortran/generated/in_unpack_r16.c b/libgfortran/generated/in_unpack_r16.c
new file mode 100644
index 00000000000..3abe19df076
--- /dev/null
+++ b/libgfortran/generated/in_unpack_r16.c
@@ -0,0 +1,112 @@
+/* Helper function for repacking arrays.
+   Copyright 2003, 2006, 2007 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.)
+
+Libgfortran 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 "libgfortran.h"
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+
+
+#if defined (HAVE_GFC_REAL_16)
+
+void
+internal_unpack_r16 (gfc_array_r16 * d, const GFC_REAL_16 * src)
+{
+  index_type count[GFC_MAX_DIMENSIONS];
+  index_type extent[GFC_MAX_DIMENSIONS];
+  index_type stride[GFC_MAX_DIMENSIONS];
+  index_type stride0;
+  index_type dim;
+  index_type dsize;
+  GFC_REAL_16 *dest;
+  int n;
+
+  dest = d->data;
+  if (src == dest || !src)
+    return;
+
+  dim = GFC_DESCRIPTOR_RANK (d);
+  dsize = 1;
+  for (n = 0; n < dim; n++)
+    {
+      count[n] = 0;
+      stride[n] = d->dim[n].stride;
+      extent[n] = d->dim[n].ubound + 1 - d->dim[n].lbound;
+      if (extent[n] <= 0)
+        abort ();
+
+      if (dsize == stride[n])
+        dsize *= extent[n];
+      else
+        dsize = 0;
+    }
+
+  if (dsize != 0)
+    {
+      memcpy (dest, src, dsize * sizeof (GFC_REAL_16));
+      return;
+    }
+
+  stride0 = stride[0];
+
+  while (dest)
+    {
+      /* Copy the data.  */
+      *dest = *(src++);
+      /* Advance to the next element.  */
+      dest += stride0;
+      count[0]++;
+      /* Advance to the next source element.  */
+      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.  */
+          dest -= stride[n] * extent[n];
+          n++;
+          if (n == dim)
+            {
+              dest = NULL;
+              break;
+            }
+          else
+            {
+              count[n]++;
+              dest += stride[n];
+            }
+        }
+    }
+}
+
+#endif
+
diff --git a/libgfortran/generated/in_unpack_r4.c b/libgfortran/generated/in_unpack_r4.c
new file mode 100644
index 00000000000..c3c27425095
--- /dev/null
+++ b/libgfortran/generated/in_unpack_r4.c
@@ -0,0 +1,112 @@
+/* Helper function for repacking arrays.
+   Copyright 2003, 2006, 2007 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.)
+
+Libgfortran 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 "libgfortran.h"
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+
+
+#if defined (HAVE_GFC_REAL_4)
+
+void
+internal_unpack_r4 (gfc_array_r4 * d, const GFC_REAL_4 * src)
+{
+  index_type count[GFC_MAX_DIMENSIONS];
+  index_type extent[GFC_MAX_DIMENSIONS];
+  index_type stride[GFC_MAX_DIMENSIONS];
+  index_type stride0;
+  index_type dim;
+  index_type dsize;
+  GFC_REAL_4 *dest;
+  int n;
+
+  dest = d->data;
+  if (src == dest || !src)
+    return;
+
+  dim = GFC_DESCRIPTOR_RANK (d);
+  dsize = 1;
+  for (n = 0; n < dim; n++)
+    {
+      count[n] = 0;
+      stride[n] = d->dim[n].stride;
+      extent[n] = d->dim[n].ubound + 1 - d->dim[n].lbound;
+      if (extent[n] <= 0)
+        abort ();
+
+      if (dsize == stride[n])
+        dsize *= extent[n];
+      else
+        dsize = 0;
+    }
+
+  if (dsize != 0)
+    {
+      memcpy (dest, src, dsize * sizeof (GFC_REAL_4));
+      return;
+    }
+
+  stride0 = stride[0];
+
+  while (dest)
+    {
+      /* Copy the data.  */
+      *dest = *(src++);
+      /* Advance to the next element.  */
+      dest += stride0;
+      count[0]++;
+      /* Advance to the next source element.  */
+      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.  */
+          dest -= stride[n] * extent[n];
+          n++;
+          if (n == dim)
+            {
+              dest = NULL;
+              break;
+            }
+          else
+            {
+              count[n]++;
+              dest += stride[n];
+            }
+        }
+    }
+}
+
+#endif
+
diff --git a/libgfortran/generated/in_unpack_r8.c b/libgfortran/generated/in_unpack_r8.c
new file mode 100644
index 00000000000..9ece8b0a4d2
--- /dev/null
+++ b/libgfortran/generated/in_unpack_r8.c
@@ -0,0 +1,112 @@
+/* Helper function for repacking arrays.
+   Copyright 2003, 2006, 2007 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.)
+
+Libgfortran 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 "libgfortran.h"
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+
+
+#if defined (HAVE_GFC_REAL_8)
+
+void
+internal_unpack_r8 (gfc_array_r8 * d, const GFC_REAL_8 * src)
+{
+  index_type count[GFC_MAX_DIMENSIONS];
+  index_type extent[GFC_MAX_DIMENSIONS];
+  index_type stride[GFC_MAX_DIMENSIONS];
+  index_type stride0;
+  index_type dim;
+  index_type dsize;
+  GFC_REAL_8 *dest;
+  int n;
+
+  dest = d->data;
+  if (src == dest || !src)
+    return;
+
+  dim = GFC_DESCRIPTOR_RANK (d);
+  dsize = 1;
+  for (n = 0; n < dim; n++)
+    {
+      count[n] = 0;
+      stride[n] = d->dim[n].stride;
+      extent[n] = d->dim[n].ubound + 1 - d->dim[n].lbound;
+      if (extent[n] <= 0)
+        abort ();
+
+      if (dsize == stride[n])
+        dsize *= extent[n];
+      else
+        dsize = 0;
+    }
+
+  if (dsize != 0)
+    {
+      memcpy (dest, src, dsize * sizeof (GFC_REAL_8));
+      return;
+    }
+
+  stride0 = stride[0];
+
+  while (dest)
+    {
+      /* Copy the data.  */
+      *dest = *(src++);
+      /* Advance to the next element.  */
+      dest += stride0;
+      count[0]++;
+      /* Advance to the next source element.  */
+      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.  */
+          dest -= stride[n] * extent[n];
+          n++;
+          if (n == dim)
+            {
+              dest = NULL;
+              break;
+            }
+          else
+            {
+              count[n]++;
+              dest += stride[n];
+            }
+        }
+    }
+}
+
+#endif
+