Replace some uses of getSubtargetImpl with the cached version

off of the MachineFunction or with the version that takes a
Function reference as an argument.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227185 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/MachineFunction.cpp

@@ -600,8 +600,7 @@ MachineFrameInfo::getPristineRegs(const MachineBasicBlock *MBB) const {
   assert(MBB && "MBB must be valid");
   const MachineFunction *MF = MBB->getParent();
   assert(MF && "MBB must be part of a MachineFunction");
-  const TargetMachine &TM = MF->getTarget();
+  const TargetRegisterInfo *TRI = MF->getSubtarget().getRegisterInfo();
-  const TargetRegisterInfo *TRI = TM.getSubtargetImpl()->getRegisterInfo();
   BitVector BV(TRI->getNumRegs());
 
   // Before CSI is calculated, no registers are considered pristine. They can be

lib/CodeGen/ScheduleDAG.cpp

@@ -36,8 +36,8 @@ static cl::opt<bool> StressSchedOpt(
 void SchedulingPriorityQueue::anchor() { }
 
 ScheduleDAG::ScheduleDAG(MachineFunction &mf)
-    : TM(mf.getTarget()), TII(TM.getSubtargetImpl()->getInstrInfo()),
+    : TM(mf.getTarget()), TII(mf.getSubtarget().getInstrInfo()),
-      TRI(TM.getSubtargetImpl()->getRegisterInfo()), MF(mf),
+      TRI(mf.getSubtarget().getRegisterInfo()), MF(mf),
       MRI(mf.getRegInfo()), EntrySU(), ExitSU() {
 #ifndef NDEBUG
   StressSched = StressSchedOpt;

lib/CodeGen/SjLjEHPrepare.cpp

@@ -191,7 +191,7 @@ Value *SjLjEHPrepare::setupFunctionContext(Function &F,
   // Create an alloca for the incoming jump buffer ptr and the new jump buffer
   // that needs to be restored on all exits from the function. This is an alloca
   // because the value needs to be added to the global context list.
-  const TargetLowering *TLI = TM->getSubtargetImpl()->getTargetLowering();
+  const TargetLowering *TLI = TM->getSubtargetImpl(F)->getTargetLowering();
   unsigned Align =
       TLI->getDataLayout()->getPrefTypeAlignment(FunctionContextTy);
   FuncCtx = new AllocaInst(FunctionContextTy, nullptr, Align, "fn_context",

lib/CodeGen/StackProtector.cpp

@@ -88,7 +88,7 @@ bool StackProtector::runOnFunction(Function &Fn) {
   DominatorTreeWrapperPass *DTWP =
       getAnalysisIfAvailable<DominatorTreeWrapperPass>();
   DT = DTWP ? &DTWP->getDomTree() : nullptr;
-  TLI = TM->getSubtargetImpl()->getTargetLowering();
+  TLI = TM->getSubtargetImpl(Fn)->getTargetLowering();
 
   Attribute Attr = Fn.getAttributes().getAttribute(
       AttributeSet::FunctionIndex, "stack-protector-buffer-size");

lib/CodeGen/TwoAddressInstructionPass.cpp

@@ -1515,9 +1515,9 @@ bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &Func) {
   MF = &Func;
   const TargetMachine &TM = MF->getTarget();
   MRI = &MF->getRegInfo();
-  TII = TM.getSubtargetImpl()->getInstrInfo();
+  TII = MF->getSubtarget().getInstrInfo();
-  TRI = TM.getSubtargetImpl()->getRegisterInfo();
+  TRI = MF->getSubtarget().getRegisterInfo();
-  InstrItins = TM.getSubtargetImpl()->getInstrItineraryData();
+  InstrItins = MF->getSubtarget().getInstrItineraryData();
   LV = getAnalysisIfAvailable<LiveVariables>();
   LIS = getAnalysisIfAvailable<LiveIntervals>();
   AA = &getAnalysis<AliasAnalysis>();