Remove in PostRA pseudos instead

Author: JonPsson1

llvm/lib/Target/SystemZ/SystemZAsmPrinter.cpp

@@ -199,10 +199,6 @@ void SystemZAsmPrinter::emitInstruction(const MachineInstr *MI) {
   SystemZMCInstLower Lower(MF->getContext(), *this);
   MCInst LoweredMI;
   switch (MI->getOpcode()) {
-  case SystemZ::ADJCALLSTACKDOWN:
-  case SystemZ::ADJCALLSTACKUP:
-    return;
-
   case SystemZ::Return:
     LoweredMI = MCInstBuilder(SystemZ::BR)
       .addReg(SystemZ::R14D);

llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp

@@ -1513,6 +1513,11 @@ bool SystemZInstrInfo::expandPostRAPseudo(MachineInstr &MI) const {
     expandLoadStackGuard(&MI);
     return true;
 
+  case SystemZ::ADJCALLSTACKDOWN:
+  case SystemZ::ADJCALLSTACKUP:
+    MI.eraseFromParent();
+    return true;
+
   default:
     return false;
   }

llvm/lib/Target/SystemZ/SystemZLongBranch.cpp

@@ -218,8 +218,6 @@ static unsigned getInstSizeInBytes(const MachineInstr &MI,
           // These do not have a size:
           MI.isDebugOrPseudoInstr() || MI.isPosition() || MI.isKill() ||
           MI.isImplicitDef() || MI.getOpcode() == TargetOpcode::MEMBARRIER ||
-          MI.getOpcode() == SystemZ::ADJCALLSTACKDOWN ||
-          MI.getOpcode() == SystemZ::ADJCALLSTACKUP ||
           // These have a size that may be zero:
           MI.isInlineAsm() || MI.getOpcode() == SystemZ::STACKMAP ||
           MI.getOpcode() == SystemZ::PATCHPOINT) &&