Move HexagonMachineScheduler to use the subtarget off of the
MachineFunction and update all uses accordingly including
VLIWResourceModel.

llvm-svn: 227872
diff --git a/llvm/lib/Target/Hexagon/HexagonMachineScheduler.cpp b/llvm/lib/Target/Hexagon/HexagonMachineScheduler.cpp
index 97c626f..35f732c 100644
--- a/llvm/lib/Target/Hexagon/HexagonMachineScheduler.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonMachineScheduler.cpp
@@ -205,20 +205,17 @@
   // Initialize the HazardRecognizers. If itineraries don't exist, are empty, or
   // are disabled, then these HazardRecs will be disabled.
   const InstrItineraryData *Itin = DAG->getSchedModel()->getInstrItineraries();
-  const TargetMachine &TM = DAG->MF.getTarget();
+  const TargetSubtargetInfo &STI = DAG->MF.getSubtarget();
+  const TargetInstrInfo *TII = STI.getInstrInfo();
   delete Top.HazardRec;
   delete Bot.HazardRec;
-  Top.HazardRec =
-      TM.getSubtargetImpl()->getInstrInfo()->CreateTargetMIHazardRecognizer(
-          Itin, DAG);
-  Bot.HazardRec =
-      TM.getSubtargetImpl()->getInstrInfo()->CreateTargetMIHazardRecognizer(
-          Itin, DAG);
+  Top.HazardRec = TII->CreateTargetMIHazardRecognizer(Itin, DAG);
+  Bot.HazardRec = TII->CreateTargetMIHazardRecognizer(Itin, DAG);
 
   delete Top.ResourceModel;
   delete Bot.ResourceModel;
-  Top.ResourceModel = new VLIWResourceModel(TM, DAG->getSchedModel());
-  Bot.ResourceModel = new VLIWResourceModel(TM, DAG->getSchedModel());
+  Top.ResourceModel = new VLIWResourceModel(STI, DAG->getSchedModel());
+  Bot.ResourceModel = new VLIWResourceModel(STI, DAG->getSchedModel());
 
   assert((!llvm::ForceTopDown || !llvm::ForceBottomUp) &&
          "-misched-topdown incompatible with -misched-bottomup");