re PR middle-end/56461 (GCC is leaking lots of memory)

	PR middle-end/56461
	* tree-vect-data-refs.c (vect_permute_store_chain): Avoid using copy
	method on dr_chain and result_chain.
	* tree-vect-stmts.c (vectorizable_store): Only call
	result_chain.create if j == 0.

From-SVN: r196396

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 80e6ea338333d7d185b3795e07686c3a12834046..ee9625cc4c0747401e727c93d57e29f1cc1550ba 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,11 @@
 2013-03-01  Jakub Jelinek  <jakub@redhat.com>
 
+       PR middle-end/56461
+       * tree-vect-data-refs.c (vect_permute_store_chain): Avoid using copy
+       method on dr_chain and result_chain.
+       * tree-vect-stmts.c (vectorizable_store): Only call
+       result_chain.create if j == 0.
+
        PR middle-end/56461
        * tree-vect-stmts.c (vect_create_vectorized_promotion_stmts): Call
        vec_oprnds0->release (); rather than vec_oprnds0->truncate (0)

diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c
index bf5a7b7731ff9a02c4169ae4b017031c3df88316..fe009acac976835c8dee35fbb28900cdac5f7f04 100644 (file)
--- a/gcc/tree-vect-data-refs.c
+++ b/gcc/tree-vect-data-refs.c
@@ -4218,7 +4218,9 @@ vect_permute_store_chain (vec<tree> dr_chain,
   unsigned int j, nelt = TYPE_VECTOR_SUBPARTS (vectype);
   unsigned char *sel = XALLOCAVEC (unsigned char, nelt);
 
-  *result_chain = dr_chain.copy ();
+  result_chain->quick_grow (length);
+  memcpy (result_chain->address (), dr_chain.address (),
+         length * sizeof (tree));
 
   for (i = 0, n = nelt / 2; i < n; i++)
     {
@@ -4259,7 +4261,8 @@ vect_permute_store_chain (vec<tree> dr_chain,
          vect_finish_stmt_generation (stmt, perm_stmt, gsi);
          (*result_chain)[2*j+1] = low;
        }
-      dr_chain = result_chain->copy ();
+      memcpy (dr_chain.address (), result_chain->address (),
+             length * sizeof (tree));
     }
 }
 

diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c
index 4004402b01539199e56ae48bddd7dc321c39434e..1e492bda62dee9a69d75f8c5746a07304a302e4f 100644 (file)
--- a/gcc/tree-vect-stmts.c
+++ b/gcc/tree-vect-stmts.c
@@ -4151,7 +4151,8 @@ vectorizable_store (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt,
          new_stmt = NULL;
          if (grouped_store)
            {
-             result_chain.create (group_size);
+             if (j == 0)
+               result_chain.create (group_size);
              /* Permute.  */
              vect_permute_store_chain (dr_chain, group_size, stmt, gsi,
                                        &result_chain);