Revert "[NFC][EarlyIfConverter] Remove unused member variables"

This reverts commit 3c83102.

Author: jmmartinez

llvm/lib/CodeGen/EarlyIfConversion.cpp

@@ -662,6 +662,8 @@ void SSAIfConv::convertIf(SmallVectorImpl<MachineBasicBlock *> &RemoveBlocks) {
 
 namespace {
 class EarlyIfConverter : public MachineFunctionPass {
+  const TargetInstrInfo *TII = nullptr;
+  const TargetRegisterInfo *TRI = nullptr;
   MCSchedModel SchedModel;
   MachineRegisterInfo *MRI = nullptr;
   MachineDominatorTree *DomTree = nullptr;
@@ -1025,6 +1027,8 @@ bool EarlyIfConverter::runOnMachineFunction(MachineFunction &MF) {
   if (!STI.enableEarlyIfConversion())
     return false;
 
+  TII = STI.getInstrInfo();
+  TRI = STI.getRegisterInfo();
   SchedModel = STI.getSchedModel();
   MRI = &MF.getRegInfo();
   DomTree = &getAnalysis<MachineDominatorTreeWrapperPass>().getDomTree();
@@ -1054,7 +1058,9 @@ bool EarlyIfConverter::runOnMachineFunction(MachineFunction &MF) {
 namespace {
 class EarlyIfPredicator : public MachineFunctionPass {
   const TargetInstrInfo *TII = nullptr;
+  const TargetRegisterInfo *TRI = nullptr;
   TargetSchedModel SchedModel;
+  MachineRegisterInfo *MRI = nullptr;
   MachineDominatorTree *DomTree = nullptr;
   MachineBranchProbabilityInfo *MBPI = nullptr;
   MachineLoopInfo *Loops = nullptr;
@@ -1201,6 +1207,8 @@ bool EarlyIfPredicator::runOnMachineFunction(MachineFunction &MF) {
 
   const TargetSubtargetInfo &STI = MF.getSubtarget();
   TII = STI.getInstrInfo();
+  TRI = STI.getRegisterInfo();
+  MRI = &MF.getRegInfo();
   SchedModel.init(&STI);
   DomTree = &getAnalysis<MachineDominatorTreeWrapperPass>().getDomTree();
   Loops = &getAnalysis<MachineLoopInfoWrapperPass>().getLI();