comment

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163876 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Target/Target.td b/include/llvm/Target/Target.td
index 42747af41e43bdda51541bfad9c38850fe6be1f5..a68eb8339d2a1e25be579a7be637f8f4a2604f3e 100644 (file)
--- a/include/llvm/Target/Target.td
+++ b/include/llvm/Target/Target.td
@@ -989,6 +989,9 @@ class Processor<string n, ProcessorItineraries pi, list<SubtargetFeature> f> {
 // ProcessorModel allows subtargets to specify the more general
 // SchedMachineModel instead if a ProcessorItinerary. Subtargets will
 // gradually move to this newer form.
+//
+// Although this class always passes NoItineraries to the Processor
+// class, the SchedMachineModel may still define valid Itineraries.
 class ProcessorModel<string n, SchedMachineModel m, list<SubtargetFeature> f>
   : Processor<n, NoItineraries, f> {
   let SchedModel = m;