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

[Matt Arsenault via llvm-commits]

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@@ -404,6 +405,9 @@ class ModuloScheduleExpanderMVE {
   /// NumUnroll = 1 means no unrolling.
   int NumUnroll;
 
+  /// Record the registers that need to compute live intervals.
+  SmallSet<Register, 8> NewVRegs;
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arsenm wrote:

Used repeatedly is not created repeatedly. The one case here this is paired with is the direct result of createVirtualRegister 

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