From: Martin Liska <mliska@suse.cz>
Date: Fri, 13 Nov 2015 12:28:54 +0000 (+0100)
Subject: Fix memory leaks in graphite
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ec17e433968e84be64522e6955e2f226fa01d295;p=gcc.git

Fix memory leaks in graphite

	* graphite-poly.c (free_scop): Release scop->drs vector.
	* graphite-scop-detection.c (scop_detection::harmful_stmt_in_region):
	Release dom vector.
	(try_generate_gimple_bb): Use vNULL as a default initialization
	for vectors.

From-SVN: r230312
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index fde5bef6522..9c3e6dff8a0 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,11 @@
+2015-11-13  Martin Liska  <mliska@suse.cz>
+
+	* graphite-poly.c (free_scop): Release scop->drs vector.
+	* graphite-scop-detection.c (scop_detection::harmful_stmt_in_region):
+	Release dom vector.
+	(try_generate_gimple_bb): Use vNULL as a default initialization
+	for vectors.
+
 2015-11-13  Martin Liska  <mliska@suse.cz>
 
 	PR ipa/68311
diff --git a/gcc/graphite-poly.c b/gcc/graphite-poly.c
index 5928b4ce606..809670ab330 100644
--- a/gcc/graphite-poly.c
+++ b/gcc/graphite-poly.c
@@ -328,6 +328,7 @@ free_scop (scop_p scop)
     free_poly_bb (pbb);
 
   scop->pbbs.release ();
+  scop->drs.release ();
 
   isl_set_free (scop->param_context);
   isl_union_map_free (scop->must_raw);
diff --git a/gcc/graphite-scop-detection.c b/gcc/graphite-scop-detection.c
index a7179d97d89..b5298d7e0a2 100644
--- a/gcc/graphite-scop-detection.c
+++ b/gcc/graphite-scop-detection.c
@@ -522,6 +522,11 @@ class scop_detection
 public:
   scop_detection () : scops (vNULL) {}
 
+  ~scop_detection ()
+  {
+    scops.release ();
+  }
+
   /* A marker for invalid sese_l.  */
   static sese_l invalid_sese;
 
@@ -1065,13 +1070,20 @@ scop_detection::harmful_stmt_in_region (sese_l scop) const
 
       /* The basic block should not be part of an irreducible loop.  */
       if (bb->flags & BB_IRREDUCIBLE_LOOP)
-        return true;
+	{
+	  dom.release ();
+	  return true;
+	}
 
       if (harmful_stmt_in_bb (scop, bb))
-	return true;
+	{
+	  dom.release ();
+	  return true;
+	}
     }
 
-    return false;
+  dom.release ();
+  return false;
 }
 
 /* Returns true if S1 subsumes/surrounds S2.  */
@@ -1749,12 +1761,9 @@ graphite_find_cross_bb_scalar_vars (scop_p scop, gimple *stmt,
 static gimple_poly_bb_p
 try_generate_gimple_bb (scop_p scop, basic_block bb)
 {
-  vec<data_reference_p> drs;
-  drs.create (3);
-  vec<tree> writes;
-  writes.create (3);
-  vec<scalar_use> reads;
-  reads.create (3);
+  vec<data_reference_p> drs = vNULL;
+  vec<tree> writes = vNULL;
+  vec<scalar_use> reads = vNULL;
 
   sese_l region = scop->scop_info->region;
   loop_p nest = outermost_loop_in_sese (region, bb);