ScheduleDAGInstrs comments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152207 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/ScheduleDAGInstrs.h b/lib/CodeGen/ScheduleDAGInstrs.h
index 1ae310eeed055c34a330107fea7e2fb89db6c4bb..a27a8c4891af22d7db66bdacf98f92f6e0de179d 100644 (file)
--- a/lib/CodeGen/ScheduleDAGInstrs.h
+++ b/lib/CodeGen/ScheduleDAGInstrs.h
@@ -281,8 +281,10 @@ namespace llvm {
 
     virtual void dumpNode(const SUnit *SU) const;
 
+    /// Return a label for a DAG node that points to an instruction.
     virtual std::string getGraphNodeLabel(const SUnit *SU) const;
 
+    /// Return a label for the region of code covered by the DAG.
     virtual std::string getDAGName() const;
 
   protected: