diff --git a/llvm/tools/llvm-mca/TimelineView.cpp b/llvm/tools/llvm-mca/TimelineView.cpp
index 840d4db..01fb84e 100644
--- a/llvm/tools/llvm-mca/TimelineView.cpp
+++ b/llvm/tools/llvm-mca/TimelineView.cpp
@@ -153,28 +153,28 @@
   OS << '[' << Iteration << ',' << SourceIndex << "]\t";
   for (unsigned I = 0, E = Entry.CycleDispatched; I < E; ++I)
     OS << ((I % 5 == 0) ? '.' : ' ');
-  OS << 'D';
+  OS << TimelineView::DisplayChar::Dispatched;
   if (Entry.CycleDispatched != Entry.CycleExecuted) {
     // Zero latency instructions have the same value for CycleDispatched,
     // CycleIssued and CycleExecuted.
     for (unsigned I = Entry.CycleDispatched + 1, E = Entry.CycleIssued; I < E;
          ++I)
-      OS << '=';
+      OS << TimelineView::DisplayChar::Waiting;
     if (Entry.CycleIssued == Entry.CycleExecuted)
-      OS << 'E';
+      OS << TimelineView::DisplayChar::DisplayChar::Executed;
     else {
       if (Entry.CycleDispatched != Entry.CycleIssued)
-        OS << 'e';
+        OS << TimelineView::DisplayChar::Executing;
       for (unsigned I = Entry.CycleIssued + 1, E = Entry.CycleExecuted; I < E;
            ++I)
-        OS << 'e';
-      OS << 'E';
+        OS << TimelineView::DisplayChar::Executing;
+      OS << TimelineView::DisplayChar::Executed;
     }
   }
 
   for (unsigned I = Entry.CycleExecuted + 1, E = Entry.CycleRetired; I < E; ++I)
-    OS << '-';
-  OS << 'R';
+    OS << TimelineView::DisplayChar::RetireLag;
+  OS << TimelineView::DisplayChar::Retired;
 
   // Skip other columns.
   for (unsigned I = Entry.CycleRetired + 1, E = LastCycle; I <= E; ++I)