[llvm] r219666 - Access the subtarget off of the MachineFunction via the DAG

[Eric Christopher]

Author: echristo
Date: Tue Oct 14 01:56:25 2014
New Revision: 219666

URL: http://llvm.org/viewvc/llvm-project?rev=219666&view=rev
Log:
Access the subtarget off of the MachineFunction via the DAG
scheduler or via the SelectionDAG if available. Otherwise
grab the subtarget off of the MachineFunction by going up
the parent chain.

Modified:
    llvm/trunk/lib/CodeGen/MachineScheduler.cpp

Modified: llvm/trunk/lib/CodeGen/MachineScheduler.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineScheduler.cpp?rev=219666&r1=219665&r2=219666&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/MachineScheduler.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineScheduler.cpp Tue Oct 14 01:56:25 2014
@@ -2363,15 +2363,14 @@ void GenericScheduler::initialize(Schedu
   // Initialize the HazardRecognizers. If itineraries don't exist, are empty, or
   // are disabled, then these HazardRecs will be disabled.
   const InstrItineraryData *Itin = SchedModel->getInstrItineraries();
-  const TargetMachine &TM = DAG->MF.getTarget();
   if (!Top.HazardRec) {
     Top.HazardRec =
-        TM.getSubtargetImpl()->getInstrInfo()->CreateTargetMIHazardRecognizer(
+        DAG->MF.getSubtarget().getInstrInfo()->CreateTargetMIHazardRecognizer(
             Itin, DAG);
   }
   if (!Bot.HazardRec) {
     Bot.HazardRec =
-        TM.getSubtargetImpl()->getInstrInfo()->CreateTargetMIHazardRecognizer(
+        DAG->MF.getSubtarget().getInstrInfo()->CreateTargetMIHazardRecognizer(
             Itin, DAG);
   }
 }
@@ -2380,8 +2379,8 @@ void GenericScheduler::initialize(Schedu
 void GenericScheduler::initPolicy(MachineBasicBlock::iterator Begin,
                                   MachineBasicBlock::iterator End,
                                   unsigned NumRegionInstrs) {
-  const TargetMachine &TM = Context->MF->getTarget();
-  const TargetLowering *TLI = TM.getSubtargetImpl()->getTargetLowering();
+  const MachineFunction &MF = *Begin->getParent()->getParent();
+  const TargetLowering *TLI = MF.getSubtarget().getTargetLowering();
 
   // Avoid setting up the register pressure tracker for small regions to save
   // compile time. As a rough heuristic, only track pressure when the number of
@@ -2401,8 +2400,8 @@ void GenericScheduler::initPolicy(Machin
   RegionPolicy.OnlyBottomUp = true;
 
   // Allow the subtarget to override default policy.
-  const TargetSubtargetInfo &ST = TM.getSubtarget<TargetSubtargetInfo>();
-  ST.overrideSchedPolicy(RegionPolicy, Begin, End, NumRegionInstrs);
+  MF.getSubtarget().overrideSchedPolicy(RegionPolicy, Begin, End,
+                                        NumRegionInstrs);
 
   // After subtarget overrides, apply command line options.
   if (!EnableRegPressure)
@@ -2898,10 +2897,9 @@ void PostGenericScheduler::initialize(Sc
   // Initialize the HazardRecognizers. If itineraries don't exist, are empty,
   // or are disabled, then these HazardRecs will be disabled.
   const InstrItineraryData *Itin = SchedModel->getInstrItineraries();
-  const TargetMachine &TM = DAG->MF.getTarget();
   if (!Top.HazardRec) {
     Top.HazardRec =
-        TM.getSubtargetImpl()->getInstrInfo()->CreateTargetMIHazardRecognizer(
+        DAG->MF.getSubtarget().getInstrInfo()->CreateTargetMIHazardRecognizer(
             Itin, DAG);
   }
 }