This reverts commit 4562a953db9d9813a873b78144cee1df39c7e0c0. The recommit adjusts processLaneForReplicateRegion to first remap all operands, then update the new operands. This fixes a VPlan verification failure when running LV tests with expensive checks. Original message: This patch adds a new replicateReplicateRegionsByVF transform to unroll replicate=regions by VF, dissolving them. The transform creates VF copies of the replicate-region's content, connects them and converts recipes to single-scalar variants for the corresponding lanes. The initial version skips regions with live-outs (VPPredInstPHIRecipe), which will be added in follow-up patches. Depends on https://github.com/llvm/llvm-project/pull/170053 PR: https://github.com/llvm/llvm-project/pull/170212