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imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
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1 files changed, 655 insertions, 0 deletions

diff --git a/libgfortran/intrinsics/spread_generic.c b/libgfortran/intrinsics/spread_generic.c
new file mode 100644
index 000000000..29671ce4c
--- /dev/null
+++ b/libgfortran/intrinsics/spread_generic.c
@@ -0,0 +1,655 @@
+/* Generic implementation of the SPREAD intrinsic
+   Copyright 2002, 2005, 2006, 2007, 2009, 2010 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 3 of the License, or (at your option) any later version.
+
+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.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "libgfortran.h"
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+
+static void
+spread_internal (gfc_array_char *ret, const gfc_array_char *source,
+		 const index_type *along, const index_type *pncopies)
+{
+  /* r.* indicates the return array.  */
+  index_type rstride[GFC_MAX_DIMENSIONS];
+  index_type rstride0;
+  index_type rdelta = 0;
+  index_type rrank;
+  index_type rs;
+  char *rptr;
+  char *dest;
+  /* s.* indicates the source array.  */
+  index_type sstride[GFC_MAX_DIMENSIONS];
+  index_type sstride0;
+  index_type srank;
+  const char *sptr;
+
+  index_type count[GFC_MAX_DIMENSIONS];
+  index_type extent[GFC_MAX_DIMENSIONS];
+  index_type n;
+  index_type dim;
+  index_type ncopies;
+  index_type size;
+
+  size = GFC_DESCRIPTOR_SIZE(source);
+
+  srank = GFC_DESCRIPTOR_RANK(source);
+
+  rrank = srank + 1;
+  if (rrank > GFC_MAX_DIMENSIONS)
+    runtime_error ("return rank too large in spread()");
+
+  if (*along > rrank)
+      runtime_error ("dim outside of rank in spread()");
+
+  ncopies = *pncopies;
+
+  if (ret->data == NULL)
+    {
+      /* The front end has signalled that we need to populate the
+	 return array descriptor.  */
+
+      size_t ub, stride;
+
+      ret->dtype = (source->dtype & ~GFC_DTYPE_RANK_MASK) | rrank;
+      dim = 0;
+      rs = 1;
+      for (n = 0; n < rrank; n++)
+	{
+	  stride = rs;
+	  if (n == *along - 1)
+	    {
+	      ub = ncopies - 1;
+	      rdelta = rs * size;
+	      rs *= ncopies;
+	    }
+	  else
+	    {
+	      count[dim] = 0;
+	      extent[dim] = GFC_DESCRIPTOR_EXTENT(source,dim);
+	      sstride[dim] = GFC_DESCRIPTOR_STRIDE_BYTES(source,dim);
+	      rstride[dim] = rs * size;
+
+	      ub = extent[dim]-1;
+	      rs *= extent[dim];
+	      dim++;
+	    }
+
+	  GFC_DIMENSION_SET(ret->dim[n], 0, ub, stride);
+	}
+      ret->offset = 0;
+      if (rs > 0)
+        ret->data = internal_malloc_size (rs * size);
+      else
+	{
+	  ret->data = internal_malloc_size (1);
+	  return;
+	}
+    }
+  else
+    {
+      int zero_sized;
+
+      zero_sized = 0;
+
+      dim = 0;
+      if (GFC_DESCRIPTOR_RANK(ret) != rrank)
+	runtime_error ("rank mismatch in spread()");
+
+      if (compile_options.bounds_check)
+	{
+	  for (n = 0; n < rrank; n++)
+	    {
+	      index_type ret_extent;
+
+	      ret_extent = GFC_DESCRIPTOR_EXTENT(ret,n);
+	      if (n == *along - 1)
+		{
+		  rdelta = GFC_DESCRIPTOR_STRIDE_BYTES(ret,n);
+
+		  if (ret_extent != ncopies)
+		    runtime_error("Incorrect extent in return value of SPREAD"
+				  " intrinsic in dimension %ld: is %ld,"
+				  " should be %ld", (long int) n+1,
+				  (long int) ret_extent, (long int) ncopies);
+		}
+	      else
+		{
+		  count[dim] = 0;
+		  extent[dim] = GFC_DESCRIPTOR_EXTENT(source,dim);
+		  if (ret_extent != extent[dim])
+		    runtime_error("Incorrect extent in return value of SPREAD"
+				  " intrinsic in dimension %ld: is %ld,"
+				  " should be %ld", (long int) n+1,
+				  (long int) ret_extent,
+				  (long int) extent[dim]);
+		    
+		  if (extent[dim] <= 0)
+		    zero_sized = 1;
+		  sstride[dim] = GFC_DESCRIPTOR_STRIDE_BYTES(source,dim);
+		  rstride[dim] = GFC_DESCRIPTOR_STRIDE_BYTES(ret,n);
+		  dim++;
+		}
+	    }
+	}
+      else
+	{
+	  for (n = 0; n < rrank; n++)
+	    {
+	      if (n == *along - 1)
+		{
+		  rdelta = GFC_DESCRIPTOR_STRIDE_BYTES(ret,n);
+		}
+	      else
+		{
+		  count[dim] = 0;
+		  extent[dim] = GFC_DESCRIPTOR_EXTENT(source,dim);
+		  if (extent[dim] <= 0)
+		    zero_sized = 1;
+		  sstride[dim] = GFC_DESCRIPTOR_STRIDE_BYTES(source,dim);
+		  rstride[dim] = GFC_DESCRIPTOR_STRIDE_BYTES(ret,n);
+		  dim++;
+		}
+	    }
+	}
+
+      if (zero_sized)
+	return;
+
+      if (sstride[0] == 0)
+	sstride[0] = size;
+    }
+  sstride0 = sstride[0];
+  rstride0 = rstride[0];
+  rptr = ret->data;
+  sptr = source->data;
+
+  while (sptr)
+    {
+      /* Spread this element.  */
+      dest = rptr;
+      for (n = 0; n < ncopies; n++)
+        {
+          memcpy (dest, sptr, size);
+          dest += rdelta;
+        }
+      /* Advance to the next element.  */
+      sptr += sstride0;
+      rptr += rstride0;
+      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];
+          rptr -= rstride[n] * extent[n];
+          n++;
+          if (n >= srank)
+            {
+              /* Break out of the loop.  */
+              sptr = NULL;
+              break;
+            }
+          else
+            {
+              count[n]++;
+              sptr += sstride[n];
+              rptr += rstride[n];
+            }
+        }
+    }
+}
+
+/* This version of spread_internal treats the special case of a scalar
+   source.  This is much simpler than the more general case above.  */
+
+static void
+spread_internal_scalar (gfc_array_char *ret, const char *source,
+			const index_type *along, const index_type *pncopies)
+{
+  int n;
+  int ncopies = *pncopies;
+  char * dest;
+  size_t size;
+
+  size = GFC_DESCRIPTOR_SIZE(ret);
+
+  if (GFC_DESCRIPTOR_RANK (ret) != 1)
+    runtime_error ("incorrect destination rank in spread()");
+
+  if (*along > 1)
+    runtime_error ("dim outside of rank in spread()");
+
+  if (ret->data == NULL)
+    {
+      ret->data = internal_malloc_size (ncopies * size);
+      ret->offset = 0;
+      GFC_DIMENSION_SET(ret->dim[0], 0, ncopies - 1, 1);
+    }
+  else
+    {
+      if (ncopies - 1 > (GFC_DESCRIPTOR_EXTENT(ret,0)  - 1)
+			   / GFC_DESCRIPTOR_STRIDE(ret,0))
+	runtime_error ("dim too large in spread()");
+    }
+
+  for (n = 0; n < ncopies; n++)
+    {
+      dest = (char*)(ret->data + n * GFC_DESCRIPTOR_STRIDE_BYTES(ret,0));
+      memcpy (dest , source, size);
+    }
+}
+
+extern void spread (gfc_array_char *, const gfc_array_char *,
+		    const index_type *, const index_type *);
+export_proto(spread);
+
+void
+spread (gfc_array_char *ret, const gfc_array_char *source,
+	const index_type *along, const index_type *pncopies)
+{
+  index_type type_size;
+
+  type_size = GFC_DTYPE_TYPE_SIZE(ret);
+  switch(type_size)
+    {
+    case GFC_DTYPE_DERIVED_1:
+    case GFC_DTYPE_LOGICAL_1:
+    case GFC_DTYPE_INTEGER_1:
+      spread_i1 ((gfc_array_i1 *) ret, (gfc_array_i1 *) source,
+		 *along, *pncopies);
+      return;
+
+    case GFC_DTYPE_LOGICAL_2:
+    case GFC_DTYPE_INTEGER_2:
+      spread_i2 ((gfc_array_i2 *) ret, (gfc_array_i2 *) source,
+		 *along, *pncopies);
+      return;
+
+    case GFC_DTYPE_LOGICAL_4:
+    case GFC_DTYPE_INTEGER_4:
+      spread_i4 ((gfc_array_i4 *) ret, (gfc_array_i4 *) source,
+		 *along, *pncopies);
+      return;
+
+    case GFC_DTYPE_LOGICAL_8:
+    case GFC_DTYPE_INTEGER_8:
+      spread_i8 ((gfc_array_i8 *) ret, (gfc_array_i8 *) source,
+		 *along, *pncopies);
+      return;
+
+#ifdef HAVE_GFC_INTEGER_16
+    case GFC_DTYPE_LOGICAL_16:
+    case GFC_DTYPE_INTEGER_16:
+      spread_i16 ((gfc_array_i16 *) ret, (gfc_array_i16 *) source,
+		 *along, *pncopies);
+      return;
+#endif
+
+    case GFC_DTYPE_REAL_4:
+      spread_r4 ((gfc_array_r4 *) ret, (gfc_array_r4 *) source,
+		 *along, *pncopies);
+      return;
+
+    case GFC_DTYPE_REAL_8:
+      spread_r8 ((gfc_array_r8 *) ret, (gfc_array_r8 *) source,
+		 *along, *pncopies);
+      return;
+
+/* FIXME: This here is a hack, which will have to be removed when
+   the array descriptor is reworked.  Currently, we don't store the
+   kind value for the type, but only the size.  Because on targets with
+   __float128, we have sizeof(logn double) == sizeof(__float128),
+   we cannot discriminate here and have to fall back to the generic
+   handling (which is suboptimal).  */
+#if !defined(GFC_REAL_16_IS_FLOAT128)
+# ifdef GFC_HAVE_REAL_10
+    case GFC_DTYPE_REAL_10:
+      spread_r10 ((gfc_array_r10 *) ret, (gfc_array_r10 *) source,
+		 *along, *pncopies);
+      return;
+# endif
+
+# ifdef GFC_HAVE_REAL_16
+    case GFC_DTYPE_REAL_16:
+      spread_r16 ((gfc_array_r16 *) ret, (gfc_array_r16 *) source,
+		 *along, *pncopies);
+      return;
+# endif
+#endif
+
+    case GFC_DTYPE_COMPLEX_4:
+      spread_c4 ((gfc_array_c4 *) ret, (gfc_array_c4 *) source,
+		 *along, *pncopies);
+      return;
+
+    case GFC_DTYPE_COMPLEX_8:
+      spread_c8 ((gfc_array_c8 *) ret, (gfc_array_c8 *) source,
+		 *along, *pncopies);
+      return;
+
+/* FIXME: This here is a hack, which will have to be removed when
+   the array descriptor is reworked.  Currently, we don't store the
+   kind value for the type, but only the size.  Because on targets with
+   __float128, we have sizeof(logn double) == sizeof(__float128),
+   we cannot discriminate here and have to fall back to the generic
+   handling (which is suboptimal).  */
+#if !defined(GFC_REAL_16_IS_FLOAT128)
+# ifdef GFC_HAVE_COMPLEX_10
+    case GFC_DTYPE_COMPLEX_10:
+      spread_c10 ((gfc_array_c10 *) ret, (gfc_array_c10 *) source,
+		 *along, *pncopies);
+      return;
+# endif
+
+# ifdef GFC_HAVE_COMPLEX_16
+    case GFC_DTYPE_COMPLEX_16:
+      spread_c16 ((gfc_array_c16 *) ret, (gfc_array_c16 *) source,
+		 *along, *pncopies);
+      return;
+# endif
+#endif
+
+    case GFC_DTYPE_DERIVED_2:
+      if (GFC_UNALIGNED_2(ret->data) || GFC_UNALIGNED_2(source->data))
+	break;
+      else
+	{
+	  spread_i2 ((gfc_array_i2 *) ret, (gfc_array_i2 *) source,
+		     *along, *pncopies);
+	  return;
+	}
+
+    case GFC_DTYPE_DERIVED_4:
+      if (GFC_UNALIGNED_4(ret->data) || GFC_UNALIGNED_4(source->data))
+	break;
+      else
+	{
+	  spread_i4 ((gfc_array_i4 *) ret, (gfc_array_i4 *) source,
+		     *along, *pncopies);
+	  return;
+	}
+
+    case GFC_DTYPE_DERIVED_8:
+      if (GFC_UNALIGNED_8(ret->data) || GFC_UNALIGNED_8(source->data))
+	break;
+      else
+	{
+	  spread_i8 ((gfc_array_i8 *) ret, (gfc_array_i8 *) source,
+		     *along, *pncopies);
+	  return;
+	}
+
+#ifdef HAVE_GFC_INTEGER_16
+    case GFC_DTYPE_DERIVED_16:
+      if (GFC_UNALIGNED_16(ret->data) || GFC_UNALIGNED_16(source->data))
+	break;
+      else
+	{
+	  spread_i16 ((gfc_array_i16 *) ret, (gfc_array_i16 *) source,
+		      *along, *pncopies);
+	  return;
+	}
+#endif
+    }
+
+  spread_internal (ret, source, along, pncopies);
+}
+
+
+extern void spread_char (gfc_array_char *, GFC_INTEGER_4,
+			 const gfc_array_char *, const index_type *,
+			 const index_type *, GFC_INTEGER_4);
+export_proto(spread_char);
+
+void
+spread_char (gfc_array_char *ret,
+	     GFC_INTEGER_4 ret_length __attribute__((unused)),
+	     const gfc_array_char *source, const index_type *along,
+	     const index_type *pncopies,
+	     GFC_INTEGER_4 source_length __attribute__((unused)))
+{
+  spread_internal (ret, source, along, pncopies);
+}
+
+
+extern void spread_char4 (gfc_array_char *, GFC_INTEGER_4,
+			  const gfc_array_char *, const index_type *,
+			  const index_type *, GFC_INTEGER_4);
+export_proto(spread_char4);
+
+void
+spread_char4 (gfc_array_char *ret,
+	      GFC_INTEGER_4 ret_length __attribute__((unused)),
+	      const gfc_array_char *source, const index_type *along,
+	      const index_type *pncopies,
+	      GFC_INTEGER_4 source_length __attribute__((unused)))
+{
+  spread_internal (ret, source, along, pncopies);
+}
+
+
+/* The following are the prototypes for the versions of spread with a
+   scalar source.  */
+
+extern void spread_scalar (gfc_array_char *, const char *,
+			   const index_type *, const index_type *);
+export_proto(spread_scalar);
+
+void
+spread_scalar (gfc_array_char *ret, const char *source,
+	       const index_type *along, const index_type *pncopies)
+{
+  index_type type_size;
+
+  if (!ret->dtype)
+    runtime_error ("return array missing descriptor in spread()");
+
+  type_size = GFC_DTYPE_TYPE_SIZE(ret);
+  switch(type_size)
+    {
+    case GFC_DTYPE_DERIVED_1:
+    case GFC_DTYPE_LOGICAL_1:
+    case GFC_DTYPE_INTEGER_1:
+      spread_scalar_i1 ((gfc_array_i1 *) ret, (GFC_INTEGER_1 *) source,
+			*along, *pncopies);
+      return;
+
+    case GFC_DTYPE_LOGICAL_2:
+    case GFC_DTYPE_INTEGER_2:
+      spread_scalar_i2 ((gfc_array_i2 *) ret, (GFC_INTEGER_2 *) source,
+			*along, *pncopies);
+      return;
+
+    case GFC_DTYPE_LOGICAL_4:
+    case GFC_DTYPE_INTEGER_4:
+      spread_scalar_i4 ((gfc_array_i4 *) ret, (GFC_INTEGER_4 *) source,
+			*along, *pncopies);
+      return;
+
+    case GFC_DTYPE_LOGICAL_8:
+    case GFC_DTYPE_INTEGER_8:
+      spread_scalar_i8 ((gfc_array_i8 *) ret, (GFC_INTEGER_8 *) source,
+			*along, *pncopies);
+      return;
+
+#ifdef HAVE_GFC_INTEGER_16
+    case GFC_DTYPE_LOGICAL_16:
+    case GFC_DTYPE_INTEGER_16:
+      spread_scalar_i16 ((gfc_array_i16 *) ret, (GFC_INTEGER_16 *) source,
+			*along, *pncopies);
+      return;
+#endif
+
+    case GFC_DTYPE_REAL_4:
+      spread_scalar_r4 ((gfc_array_r4 *) ret, (GFC_REAL_4 *) source,
+			*along, *pncopies);
+      return;
+
+    case GFC_DTYPE_REAL_8:
+      spread_scalar_r8 ((gfc_array_r8 *) ret, (GFC_REAL_8 *) source,
+			*along, *pncopies);
+      return;
+
+/* FIXME: This here is a hack, which will have to be removed when
+   the array descriptor is reworked.  Currently, we don't store the
+   kind value for the type, but only the size.  Because on targets with
+   __float128, we have sizeof(logn double) == sizeof(__float128),
+   we cannot discriminate here and have to fall back to the generic
+   handling (which is suboptimal).  */
+#if !defined(GFC_REAL_16_IS_FLOAT128)
+# ifdef HAVE_GFC_REAL_10
+    case GFC_DTYPE_REAL_10:
+      spread_scalar_r10 ((gfc_array_r10 *) ret, (GFC_REAL_10 *) source,
+			*along, *pncopies);
+      return;
+# endif
+
+# ifdef HAVE_GFC_REAL_16
+    case GFC_DTYPE_REAL_16:
+      spread_scalar_r16 ((gfc_array_r16 *) ret, (GFC_REAL_16 *) source,
+			*along, *pncopies);
+      return;
+# endif
+#endif
+
+    case GFC_DTYPE_COMPLEX_4:
+      spread_scalar_c4 ((gfc_array_c4 *) ret, (GFC_COMPLEX_4 *) source,
+			*along, *pncopies);
+      return;
+
+    case GFC_DTYPE_COMPLEX_8:
+      spread_scalar_c8 ((gfc_array_c8 *) ret, (GFC_COMPLEX_8 *) source,
+			*along, *pncopies);
+      return;
+
+/* FIXME: This here is a hack, which will have to be removed when
+   the array descriptor is reworked.  Currently, we don't store the
+   kind value for the type, but only the size.  Because on targets with
+   __float128, we have sizeof(logn double) == sizeof(__float128),
+   we cannot discriminate here and have to fall back to the generic
+   handling (which is suboptimal).  */
+#if !defined(GFC_REAL_16_IS_FLOAT128)
+# ifdef HAVE_GFC_COMPLEX_10
+    case GFC_DTYPE_COMPLEX_10:
+      spread_scalar_c10 ((gfc_array_c10 *) ret, (GFC_COMPLEX_10 *) source,
+			*along, *pncopies);
+      return;
+# endif
+
+# ifdef HAVE_GFC_COMPLEX_16
+    case GFC_DTYPE_COMPLEX_16:
+      spread_scalar_c16 ((gfc_array_c16 *) ret, (GFC_COMPLEX_16 *) source,
+			*along, *pncopies);
+      return;
+# endif
+#endif
+
+    case GFC_DTYPE_DERIVED_2:
+      if (GFC_UNALIGNED_2(ret->data) || GFC_UNALIGNED_2(source))
+	break;
+      else
+	{
+	  spread_scalar_i2 ((gfc_array_i2 *) ret, (GFC_INTEGER_2 *) source,
+			    *along, *pncopies);
+	  return;
+	}
+
+    case GFC_DTYPE_DERIVED_4:
+      if (GFC_UNALIGNED_4(ret->data) || GFC_UNALIGNED_4(source))
+	break;
+      else
+	{
+	  spread_scalar_i4 ((gfc_array_i4 *) ret, (GFC_INTEGER_4 *) source,
+			    *along, *pncopies);
+	  return;
+	}
+
+    case GFC_DTYPE_DERIVED_8:
+      if (GFC_UNALIGNED_8(ret->data) || GFC_UNALIGNED_8(source))
+	break;
+      else
+	{
+	  spread_scalar_i8 ((gfc_array_i8 *) ret, (GFC_INTEGER_8 *) source,
+			    *along, *pncopies);
+	  return;
+	}
+#ifdef HAVE_GFC_INTEGER_16
+    case GFC_DTYPE_DERIVED_16:
+      if (GFC_UNALIGNED_16(ret->data) || GFC_UNALIGNED_16(source))
+	break;
+      else
+	{
+	  spread_scalar_i16 ((gfc_array_i16 *) ret, (GFC_INTEGER_16 *) source,
+			     *along, *pncopies);
+	  return;
+	}
+#endif
+    }
+
+  spread_internal_scalar (ret, source, along, pncopies);
+}
+
+
+extern void spread_char_scalar (gfc_array_char *, GFC_INTEGER_4,
+				const char *, const index_type *,
+				const index_type *, GFC_INTEGER_4);
+export_proto(spread_char_scalar);
+
+void
+spread_char_scalar (gfc_array_char *ret,
+		    GFC_INTEGER_4 ret_length __attribute__((unused)),
+		    const char *source, const index_type *along,
+		    const index_type *pncopies,
+		    GFC_INTEGER_4 source_length __attribute__((unused)))
+{
+  if (!ret->dtype)
+    runtime_error ("return array missing descriptor in spread()");
+  spread_internal_scalar (ret, source, along, pncopies);
+}
+
+
+extern void spread_char4_scalar (gfc_array_char *, GFC_INTEGER_4,
+				 const char *, const index_type *,
+				 const index_type *, GFC_INTEGER_4);
+export_proto(spread_char4_scalar);
+
+void
+spread_char4_scalar (gfc_array_char *ret,
+		     GFC_INTEGER_4 ret_length __attribute__((unused)),
+		     const char *source, const index_type *along,
+		     const index_type *pncopies,
+		     GFC_INTEGER_4 source_length __attribute__((unused)))
+{
+  if (!ret->dtype)
+    runtime_error ("return array missing descriptor in spread()");
+  spread_internal_scalar (ret, source, along, pncopies);
+
+}
+