add a marker

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23901 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/TargetSchedule.td b/lib/Target/TargetSchedule.td
index 2198c153f7b39d62f64482c0ffb668ef6398af07..89118446a5fe061255a5e98dcde76f27c13a73b7 100644 (file)
--- a/lib/Target/TargetSchedule.td
+++ b/lib/Target/TargetSchedule.td
@@ -64,3 +64,8 @@ class InstrItinData<InstrItinClass Class, list<InstrStage> stages> {
 class ProcessorItineraries<list<InstrItinData> iid> {
   list<InstrItinData> IID = iid;
 }
+
+// NoItineraries - A marker that can be used by processors without schedule
+// info.
+def NoItineraries : ProcessorItineraries<[]>;
+