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-rw-r--r--include/llvm/Target/Target.td3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/llvm/Target/Target.td b/include/llvm/Target/Target.td
index 42747af41e..a68eb8339d 100644
--- 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;