[llvm] [VPlan] Extend licm to sink replicate stores (PR #191026)

[Ramkumar Ramachandra via llvm-commits]

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@@ -2557,14 +2564,29 @@ static void licm(VPlan &Plan) {
 #ifndef NDEBUG
   VPDominatorTree VPDT(Plan);
 #endif
+  auto StoreGroups =
+      collectGroupedReplicateMemOps<Instruction::Store>(Plan, PSE, L);
+  VPTypeAnalysis TypeInfo(Plan);
+
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artagnon wrote:

Not sure what you mean: don't we have SinkStoreInfo precisely to check whether a store should be skipped when checking aliasing? Not sure how we'd do that without collecting all the stores upfront?

https://github.com/llvm/llvm-project/pull/191026