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

[Hua Tian via llvm-commits]

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@@ -2566,7 +2566,8 @@ void ModuloScheduleExpanderMVE::mergeRegUsesAfterPipeline(Register OrigReg,
 
   // The interval of OrigReg has been modified and should be recalculated when
   // LiveInterval::getInterval() is called.
-  LIS.removeInterval(OrigReg);
+  if (LIS.hasInterval(OrigReg))
+    LIS.removeInterval(OrigReg);
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huaatian wrote:

I moved this piece of code to the position where the live interval of OrigReg becomes invalid.
Updated

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