[gcc/]

	* graphite-isl-ast-to-gimple.c:
	(graphite_create_new_loop): Add calling of isl_id_free to properly
	decrement reference counts.
	
[gcc/testsuite]

	* gcc.dg/graphite/isl-ast-gen-blocks-4.c: New testcase.

From-SVN: r212994

gcc/ChangeLog

+2014-07-24  Roman Gareev  <gareevroman@gmail.com>
+
+	* graphite-isl-ast-to-gimple.c:
+	(graphite_create_new_loop): Add calling of isl_id_free to properly
+	decrement reference counts.
+
+	* gcc.dg/graphite/isl-ast-gen-blocks-4.c: New testcase.
+
 2014-07-24  Martin Liska  <mliska@suse.cz>
 
 	* cgraphunit.c (compile): Correct function used.

gcc/graphite-isl-ast-to-gimple.c

@@ -389,6 +389,10 @@ graphite_create_new_loop (edge entry_edge, __isl_keep isl_ast_node *node_for,
 
   isl_ast_expr *for_iterator = isl_ast_node_for_get_iterator (node_for);
   isl_id *id = isl_ast_expr_get_id (for_iterator);
+  std::map<isl_id *, tree>::iterator res;
+  res = ip.find (id);
+  if (ip.count (id))
+    isl_id_free (res->first);
   ip[id] = iv;
   isl_ast_expr_free (for_iterator);
   return loop;

gcc/testsuite/gcc.dg/graphite/isl-ast-gen-blocks-4.c

+/* { dg-do run } */
+/* { dg-options "-O2 -fgraphite-identity -fgraphite-code-generator=isl" } */
+
+static int __attribute__((noinline))
+foo (int k, int n1, int n2, int n3)
+{
+  int j, res = 0;
+  for (j = 0; j < k; j++)
+    {
+      int i;
+      for (i = 0; i < n1; i++)
+        res += i;
+      for (i = 0; i < n2; i++)
+        res += i;
+      for (i = 0; i < n3; i++)
+        res += i;
+    }
+
+  return res;
+}
+
+extern void abort ();
+
+int
+main (void)
+{ 
+  int res = foo (4, 50, 50, 50);
+  if (res != 14700)
+    abort ();
+
+  return 0;
+}