MI-Sched: DEBUG: print critical resource.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184028 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/MachineScheduler.cpp

@@ -1421,6 +1421,10 @@ init(ScheduleDAGMI *DAG, const TargetSchedModel *SchedModel) {
       CritResIdx = PIdx;
     }
   }
+  DEBUG(dbgs() << "Critical Resource: "
+        << SchedModel->getProcResource(CritResIdx)->Name
+        << ": " << RemainingCounts[CritResIdx]
+        << " / " << SchedModel->getLatencyFactor() << '\n');
 }
 
 void ConvergingScheduler::SchedBoundary::