* lambda-code.c (lambda_transform_legal_p): Use DDR_NUM_DIST_VECTS

	for testing whether the data_dependence_relation contains distance
	vectors.  Iterate over all distance vectors of the ddr.
	* lambda.h: Define a vec of lambda_vector pointers.
	* tree-data-ref.c (dump_data_dependence_relation,
	dump_data_dependence_direction): Iterate over all distance and
	direction vectors of the ddr.
	(initialize_data_dependence_relation): Initialize DDR_DIR_VECTS and
	DDR_DIST_VECTS.
	(build_classic_dist_vector, build_classic_dir_vector): Push a set
	of distance/direction vectors instead of a single one.
	* tree-data-ref.h (dir_vects, dist_vects): Replace dir/dist 
	lambda_vectors with a vec of lambda_vectors.
	(DDR_DIR_VECT, DDR_DIST_VECT): Redefined as operations on vec.
	(DDR_DIR_VECTS, DDR_DIST_VECTS, DDR_NUM_DIR_VECTS,
	DDR_NUM_DIST_VECTS): New.
	* tree-loop-linear.c (gather_interchange_stats): Test for the
	existence of distance vectors only after having checked that there
	is a dependence.  Iterate over all distance vectors of the ddr.
	(linear_transform_loops): Use dump_data_dependence_relation.
	* tree-vect-analyze.c (vect_analyze_data_ref_dependence): Test for
	distance vectors using DDR_NUM_DIST_VECTS.  Iterate over all the
	distance vectors of the ddr.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@106530 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 15 insertions, 5 deletions

diff --git a/gcc/tree-data-ref.h b/gcc/tree-data-ref.h
index 0677db5251c..5b90e2d5544 100644
--- a/gcc/tree-data-ref.h
+++ b/gcc/tree-data-ref.h
@@ -217,14 +217,15 @@ struct data_dependence_relation
      the data_dependence_relation.  */
   varray_type subscripts;
 
-  /* The size of the direction/distance vectors.  */
+  /* The size of the direction/distance vectors: the depth of the
+     analyzed loop nest.  */
   int size_vect;
 
   /* The classic direction vector.  */
-  lambda_vector dir_vect;
+  VEC(lambda_vector,heap) *dir_vects;
 
   /* The classic distance vector.  */
-  lambda_vector dist_vect;
+  VEC(lambda_vector,heap) *dist_vects;
 };
 
 #define DDR_A(DDR) DDR->a
@@ -237,8 +238,17 @@ struct data_dependence_relation
 #define DDR_SUBSCRIPT(DDR, I) VARRAY_GENERIC_PTR (DDR_SUBSCRIPTS (DDR), I)
 #define DDR_NUM_SUBSCRIPTS(DDR) VARRAY_ACTIVE_SIZE (DDR_SUBSCRIPTS (DDR))
 #define DDR_SIZE_VECT(DDR) DDR->size_vect
-#define DDR_DIR_VECT(DDR) DDR->dir_vect
-#define DDR_DIST_VECT(DDR) DDR->dist_vect
+
+#define DDR_DIST_VECTS(DDR) ((DDR)->dist_vects)
+#define DDR_DIR_VECTS(DDR) ((DDR)->dir_vects)
+#define DDR_NUM_DIST_VECTS(DDR) \
+  (VEC_length (lambda_vector, DDR_DIST_VECTS (DDR)))
+#define DDR_NUM_DIR_VECTS(DDR) \
+  (VEC_length (lambda_vector, DDR_DIR_VECTS (DDR)))
+#define DDR_DIR_VECT(DDR, I) \
+  VEC_index (lambda_vector, DDR_DIR_VECTS (DDR), I)
+#define DDR_DIST_VECT(DDR, I) \
+  VEC_index (lambda_vector, DDR_DIST_VECTS (DDR), I)