[llvm] [llvm][CodeGen] update live intervals for ModuloScheduleExpanderMVE (PR #132677)

[Hua Tian via llvm-commits]

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@@ -2522,18 +2542,19 @@ void ModuloScheduleExpanderMVE::mergeRegUsesAfterPipeline(Register OrigReg,
   // remaining iterations) with the route that execute the original loop.
   if (!UsesAfterLoop.empty()) {
     Register PhiReg = MRI.createVirtualRegister(MRI.getRegClass(OrigReg));
-    BuildMI(*NewExit, NewExit->getFirstNonPHI(), DebugLoc(),
-            TII->get(TargetOpcode::PHI), PhiReg)
-        .addReg(OrigReg)
-        .addMBB(OrigKernel)
-        .addReg(NewReg)
-        .addMBB(Epilog);
+    MachineInstr *NewPhi =
+        BuildMI(*NewExit, NewExit->getFirstNonPHI(), DebugLoc(),
+                TII->get(TargetOpcode::PHI), PhiReg)
+            .addReg(OrigReg)
+            .addMBB(OrigKernel)
+            .addReg(NewReg)
+            .addMBB(Epilog);
+    LIS.InsertMachineInstrInMaps(*NewPhi);
 
     for (MachineOperand *MO : UsesAfterLoop)
       MO->setReg(PhiReg);
 
-    if (!LIS.hasInterval(PhiReg))
-      LIS.createEmptyInterval(PhiReg);
+    NewVRegs.push_back(PhiReg);
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huaatian wrote:

Updated

https://github.com/llvm/llvm-project/pull/132677