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re PR fortran/34706 (FE should reuse array temporaries, reduce temporaties and tell ME the array-size type)

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2008-01-08  Richard Guenther  <rguenther@suse.de>

	PR fortran/34706
	PR tree-optimization/34683
	* trans-types.c (gfc_get_array_type_bounds): Use an array type
	with known size for accesses if that is known.

From-SVN: r131404
This commit is contained in:
Richard Guenther 2008-01-08 21:21:29 +00:00 committed by Richard Biener
parent 4d86971803
commit 416a8af4da
2 changed files with 17 additions and 5 deletions
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7
gcc/fortran/ChangeLog
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@ -1,3 +1,10 @@
2008-01-08 Richard Guenther <rguenther@suse.de>
PR fortran/34706
PR tree-optimization/34683
* trans-types.c (gfc_get_array_type_bounds): Use an array type
with known size for accesses if that is known.
2008-01-08 Paul Thomas <pault@gcc.gnu.org>
PR fortran/34476

15
gcc/fortran/trans-types.c
View File

@ -1436,7 +1436,7 @@ gfc_get_array_type_bounds (tree etype, int dimen, tree * lbound,
enum gfc_array_kind akind)
{
char name[8 + GFC_RANK_DIGITS + GFC_MAX_SYMBOL_LEN];
tree fat_type, base_type, arraytype, lower, upper, stride, tmp;
tree fat_type, base_type, arraytype, lower, upper, stride, tmp, rtype;
const char *typename;
int n;
@ -1511,10 +1511,15 @@ gfc_get_array_type_bounds (tree etype, int dimen, tree * lbound,
/* TODO: known offsets for descriptors. */
GFC_TYPE_ARRAY_OFFSET (fat_type) = NULL_TREE;
/* We define data as an unknown size array. Much better than doing
pointer arithmetic. */
arraytype =
build_array_type (etype, gfc_array_range_type);
/* We define data as an array with the correct size if possible.
Much better than doing pointer arithmetic. */
if (stride)
rtype = build_range_type (gfc_array_index_type, gfc_index_zero_node,
int_const_binop (MINUS_EXPR, stride,
integer_one_node, 0));
else
rtype = gfc_array_range_type;
arraytype = build_array_type (etype, rtype);
arraytype = build_pointer_type (arraytype);
GFC_TYPE_ARRAY_DATAPTR_TYPE (fat_type) = arraytype;