[NFC] Simplify checks using isDebugOrPseudoInstr API (#145127)

Merge the two checks using the existing API, NFC.

Author: wlei-llvm

llvm/lib/CodeGen/MachineSink.cpp

@@ -1209,7 +1209,7 @@ MachineSinking::getBBRegisterPressure(const MachineBasicBlock &MBB,
                                          MIE = MBB.instr_begin();
        MII != MIE; --MII) {
     const MachineInstr &MI = *std::prev(MII);
-    if (MI.isDebugInstr() || MI.isPseudoProbe())
+    if (MI.isDebugOrPseudoInstr())
       continue;
     RegisterOperands RegOpers;
     RegOpers.collect(MI, *TRI, *MRI, false, false);

llvm/lib/CodeGen/RegisterPressure.cpp

@@ -858,7 +858,7 @@ void RegPressureTracker::recedeSkipDebugValues() {
 
 void RegPressureTracker::recede(SmallVectorImpl<VRegMaskOrUnit> *LiveUses) {
   recedeSkipDebugValues();
-  if (CurrPos->isDebugInstr() || CurrPos->isPseudoProbe()) {
+  if (CurrPos->isDebugOrPseudoInstr()) {
     // It's possible to only have debug_value and pseudo probe instructions and
     // hit the start of the block.
     assert(CurrPos == MBB->begin());