comment

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152209 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/ScheduleDAGInstrs.h b/lib/CodeGen/ScheduleDAGInstrs.h
index 7830f83fff5ed468700f28788e8d9dc2304ea2ff..b09840dab4b197a497da099ce11c374e50490cf5 100644 (file)
--- a/lib/CodeGen/ScheduleDAGInstrs.h
+++ b/lib/CodeGen/ScheduleDAGInstrs.h
@@ -297,6 +297,8 @@ namespace llvm {
     /// Schedule - Order nodes according to selected style, filling
     /// in the Sequence member.
     ///
+    /// Typically, a scheduling algorithm will implement Schedule() without
+    /// overriding enterRegion() or exitRegion().
     virtual void Schedule() = 0;
 
     virtual void dumpNode(const SUnit *SU) const;