[llvm] [LiveDebugVariables] Stop holding SlotIndexes for erased instructions (PR #224467)

[Petar Jovanovic via llvm-commits]

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@@ -2959,6 +2959,13 @@ bool RAGreedy::run(MachineFunction &mf) {
   if (!hasVirtRegAlloc())
     return false;
 
+  // Passes that ran since the analysis was built may have erased instructions
+  // it holds indexes for. This only makes it clean here and in
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petar-jovanovic wrote:

Now that I look at it, it is confusing indeed. I have reworded it.

https://github.com/llvm/llvm-project/pull/224467