From 4ee9c6840ad3fc92a9034343278a1e476ad6872a Mon Sep 17 00:00:00 2001
From: dnovillo <dnovillo@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu, 13 May 2004 06:41:07 +0000
Subject: Merge tree-ssa-20020619-branch into mainline.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@81764 138bc75d-0d04-0410-961f-82ee72b054a4
---
 libgfortran/generated/in_pack_i8.c | 115 +++++++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 libgfortran/generated/in_pack_i8.c

(limited to 'libgfortran/generated/in_pack_i8.c')

diff --git a/libgfortran/generated/in_pack_i8.c b/libgfortran/generated/in_pack_i8.c
new file mode 100644
index 00000000000..82609272e4a
--- /dev/null
+++ b/libgfortran/generated/in_pack_i8.c
@@ -0,0 +1,115 @@
+/* Helper function for repacking arrays.
+   Copyright 2003 Free Software Foundation, Inc.
+   Contributed by Paul Brook <paul@nowt.org>
+
+This file is part of the GNU Fortran 95 runtime library (libgfortran).
+
+Libgfor is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+Ligbfor 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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with libgfortran; see the file COPYING.LIB.  If not,
+write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#include "config.h"
+#include <stdlib.h>
+#include <assert.h>
+#include "libgfortran.h"
+
+
+/* Allocates a block of memory with internal_malloc if the array needs
+   repacking.  */
+
+GFC_INTEGER_8 *
+internal_pack_8 (gfc_array_i8 * source)
+{
+  index_type count[GFC_MAX_DIMENSIONS - 1];
+  index_type extent[GFC_MAX_DIMENSIONS - 1];
+  index_type stride[GFC_MAX_DIMENSIONS - 1];
+  index_type stride0;
+  index_type dim;
+  index_type ssize;
+  const GFC_INTEGER_8 *src;
+  GFC_INTEGER_8 *dest;
+  GFC_INTEGER_8 *destptr;
+  int n;
+  int packed;
+
+  if (source->dim[0].stride == 0)
+    {
+      source->dim[0].stride = 1;
+      return source->data;
+    }
+
+  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_8 *)internal_malloc_size (ssize * 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 proabably not worth it.  */
+          src -= stride[n] * extent[n];
+          n++;
+          if (n == dim)
+            {
+              src = NULL;
+              break;
+            }
+          else
+            {
+              count[n]++;
+              src += stride[n];
+            }
+        }
+    }
+  return destptr;
+}
+
-- 
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