ira-int.h (struct ira_loop_tree_node): Improve comments for subloop_next/next…

ira-int.h (struct ira_loop_tree_node): Improve comments for subloop_next/next and subloops/childen fields.

	* ira-int.h (struct ira_loop_tree_node): Improve comments for
	subloop_next/next and subloops/childen fields.

From-SVN: r141873

gcc/ChangeLog

+2008-11-14  Adam Nemet  <anemet@caviumnetworks.com>
+
+	* ira-int.h (struct ira_loop_tree_node): Improve comments for
+	subloop_next/next and subloops/childen fields.
+
 2008-11-14  Ulrich Weigand  <Ulrich.Weigand@de.ibm.com>
 
 	* config/spu/spu-elf.h (STANDARD_STARTFILE_PREFIX_2): Disable default.

gcc/ira-int.h

@@ -83,11 +83,11 @@ struct ira_loop_tree_node
   /* The node represents basic block if children == NULL.  */
   basic_block bb;    /* NULL for loop.  */
   struct loop *loop; /* NULL for BB.  */
-  /* The next (loop) node of with the same parent.  SUBLOOP_NEXT is
-     always NULL for BBs. */
+  /* NEXT/SUBLOOP_NEXT is the next node/loop-node of the same parent.
+     SUBLOOP_NEXT is always NULL for BBs.  */
   ira_loop_tree_node_t subloop_next, next;
-  /* The first (loop) node immediately inside the node.  SUBLOOPS is
-     always NULL for BBs.  */
+  /* CHILDREN/SUBLOOPS is the first node/loop-node immediately inside
+     the node.  They are NULL for BBs.  */
   ira_loop_tree_node_t subloops, children;
   /* The node immediately containing given node.  */
   ira_loop_tree_node_t parent;