[llvm] [Sched] Skip MemOp with unknown size when clustering (PR #118443)

[Matt Arsenault via llvm-commits]

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@@ -1947,6 +1947,9 @@ void BaseMemOpClusterMutation::collectMemOpRecords(
     LocationSize Width = 0;
     if (TII->getMemOperandsWithOffsetWidth(MI, BaseOps, Offset,
                                            OffsetIsScalable, Width, TRI)) {
+      if (!Width.hasValue())
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arsenm wrote:

I'd somewhat expect this to just collect the unknown width and let the users figure out what to do with it? Would that require widespread changes?

https://github.com/llvm/llvm-project/pull/118443