Fix PR47002: memory leaks.

2010-12-23  Sebastian Pop  <sebastian.pop@amd.com>

	PR tree-optimization/47002
	* tree-data-ref.c (compute_data_dependences_for_loop): Pass in a
	pointer to the loop_nest.
	(analyze_all_data_dependences): Initialize and free the loop_nest.
	(free_dependence_relations): Do not free loop_nest.
	(build_rdg): Pass in the loop_nest, datarefs, and dependence_relations.
	(free_rdg): Also free the data on edges.
	* tree-data-ref.h (build_rdg): Update declaration.
	(compute_data_dependences_for_loop): Same.
	* tree-if-conv.c (if_convertible_loop_p_1): Pass in the loop_nest.
	(if_convertible_loop_p): Allocate and free loop_nest.
	* tree-loop-distribution.c (rdg_flag_loop_exits): Free conds.
	(free_rdg_components): VEC_free components.
	(distribute_loop): Update call to build_rdg.  Allocate and free
	loop_nest, datarefs, and dependence_relations.
	* tree-loop-linear.c (linear_transform_loops): Allocate and free
	loop_nest.
	* tree-parloops.c (loop_parallel_p): Same.
	* tree-predcom.c (tree_predictive_commoning_loop): Same.
	* tree-vect-data-refs.c (vect_analyze_data_refs): Pass to
	compute_data_dependences_for_loop a pointer to LOOP_VINFO_LOOP_NEST.
	* tree-vect-loop.c (new_loop_vec_info): Initialize LOOP_VINFO_LOOP_NEST.
	(destroy_loop_vec_info): Free LOOP_VINFO_MAY_ALIAS_DDRS and
	LOOP_VINFO_LOOP_NEST.
	* tree-vect-slp.c (destroy_bb_vec_info): Call free_data_refs and
	free_dependence_relations.
	* tree-vectorizer.h (struct _loop_vec_info): Add a field loop_nest.
	(LOOP_VINFO_LOOP_NEST): New.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@168210 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 4 insertions, 0 deletions

diff --git a/gcc/tree-vectorizer.h b/gcc/tree-vectorizer.h
index b2cc2d1b22e..ee8410c1811 100644
--- a/gcc/tree-vectorizer.h
+++ b/gcc/tree-vectorizer.h
@@ -216,6 +216,9 @@ typedef struct _loop_vec_info {
   /* The mask used to check the alignment of pointers or arrays.  */
   int ptr_mask;
 
+  /* The loop nest in which the data dependences are computed.  */
+  VEC (loop_p, heap) *loop_nest;
+
   /* All data references in the loop.  */
   VEC (data_reference_p, heap) *datarefs;
 
@@ -261,6 +264,7 @@ typedef struct _loop_vec_info {
 #define LOOP_VINFO_VECTORIZABLE_P(L)       (L)->vectorizable
 #define LOOP_VINFO_VECT_FACTOR(L)          (L)->vectorization_factor
 #define LOOP_VINFO_PTR_MASK(L)             (L)->ptr_mask
+#define LOOP_VINFO_LOOP_NEST(L)            (L)->loop_nest
 #define LOOP_VINFO_DATAREFS(L)             (L)->datarefs
 #define LOOP_VINFO_DDRS(L)                 (L)->ddrs
 #define LOOP_VINFO_INT_NITERS(L)           (TREE_INT_CST_LOW ((L)->num_iters))