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

[Hua Tian via llvm-commits]

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@@ -2213,6 +2215,14 @@ void ModuloScheduleExpanderMVE::insertCondBranch(MachineBasicBlock &MBB,
   }
 }
 
+/// Some registers are generated during the kernel expansion. We calculate the
+/// live intervals of these registers after the expansion.
+void ModuloScheduleExpanderMVE::calculateIntervals() {
+  for (Register Reg : NoIntervalRegs)
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huaatian wrote:

> If you're just creating fresh registers and need to compute the live intervals at the end, NewVRegs would be a better name.
Updated.

>  Can you seed the intervals from some other register?
Some NewVRegs will still be used by other newly added instructions in the subsequent processing. It seems that calculating their live intervals before exiting is relatively a simple and reliable method.


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