[llvm] [LV] Factor costInterleaveGatherScatter (NFC) (PR #215857)

[Ramkumar Ramachandra via llvm-commits]

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@@ -2400,6 +2456,13 @@ bool LoopVectorizationCostModel::isLegalMaskedLoadOrStore(
                                          getLoadStoreAddressSpace(I));
 }
 
+bool LoopVectorizationCostModel::isLegalGatherOrScatter(Instruction *I,
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artagnon wrote:

Perhaps better to keep that discussion on the follow-up patch? Yes, a lot more work is required to switch to VPlan-based costing for gather-scatters?

https://github.com/llvm/llvm-project/pull/215857