[EraVM] Preserve register flags after expansion of PTR_TO_INT and MOVEIMM

Some optimizations like MachineCopyPropagation makes
decisions based on the register flags, so in order for
these optimizations to work correctly, we need to preserve
flags after expansion of pseudo instructions.

Signed-off-by: Vladimir Radosavljevic <[email protected]>

Author: vladimirradosavljevic

llvm/lib/Target/EraVM/EraVMExpandPseudoInsts.cpp

@@ -116,8 +116,9 @@ bool EraVMExpandPseudo::runOnMachineFunction(MachineFunction &MF) {
           LLVM_DEBUG(dbgs() << "Found PTR_TO_INT: "; MI.dump());
           [[maybe_unused]] auto NewMI =
               BuildMI(*MI.getParent(), &MI, MI.getDebugLoc(),
-                      TII->get(EraVM::ADDrrr_s), ToReg)
-                  .addReg(FromReg)
+                      TII->get(EraVM::ADDrrr_s))
+                  .add(MI.getOperand(0))
+                  .add(MI.getOperand(1))
                   .addReg(EraVM::R0)
                   .addImm(EraVMCC::COND_NONE);
           LLVM_DEBUG(dbgs() << "Converting PTR_TO_INT to: "; NewMI->dump());
@@ -147,8 +148,8 @@ bool EraVMExpandPseudo::runOnMachineFunction(MachineFunction &MF) {
                "Immediate value is too large to fit into instruction");
         assert(ImmVal.getBitWidth() == 256 && "Immediate value is not 256-bit");
 
-        BuildMI(*MI.getParent(), &MI, MI.getDebugLoc(), TII->get(Opcode),
-                MI.getOperand(0).getReg())
+        BuildMI(*MI.getParent(), &MI, MI.getDebugLoc(), TII->get(Opcode))
+            .add(MI.getOperand(0))
             .addCImm(ConstantInt::get(*Context, ImmVal))
             .addReg(EraVM::R0)
             .addImm(EraVMCC::COND_NONE);