Finish moving TargetRegisterInfo::isVirtualRegister() and friends to llvm::Register as started by r367614. NFC

llvm-svn: 367633
diff --git a/llvm/lib/Target/AMDGPU/R600MachineScheduler.cpp b/llvm/lib/Target/AMDGPU/R600MachineScheduler.cpp
index 34267a9..e1abdb7 100644
--- a/llvm/lib/Target/AMDGPU/R600MachineScheduler.cpp
+++ b/llvm/lib/Target/AMDGPU/R600MachineScheduler.cpp
@@ -183,7 +183,7 @@
   if (MI->getOpcode() != R600::COPY)
     return false;
 
-  return !TargetRegisterInfo::isVirtualRegister(MI->getOperand(1).getReg());
+  return !Register::isVirtualRegister(MI->getOperand(1).getReg());
 }
 
 void R600SchedStrategy::releaseTopNode(SUnit *SU) {
@@ -209,7 +209,7 @@
 
 bool R600SchedStrategy::regBelongsToClass(unsigned Reg,
                                           const TargetRegisterClass *RC) const {
-  if (!TargetRegisterInfo::isVirtualRegister(Reg)) {
+  if (!Register::isVirtualRegister(Reg)) {
     return RC->contains(Reg);
   } else {
     return MRI->getRegClass(Reg) == RC;