[llvm] [LV] Convert gather loads with invariant stride into strided loads (PR #147297)

[Mel Chen via llvm-commits]

Mel-Chen wrote:

> The latest version of the patch still contains `VPWidenStridedLoadRecipe`, but it appears unused now?

Yes, and I updated VPWidenMemIntrinsicRecipe to inherits from VPWidenIntrinsicRecipe e70ab6f7fce03c3b9fb4bb846f9219c8048ea625 and remove VPWidenStridedLoadRecipe now e702e8cea7bc6089df325d43c02f9eccb76350aa. 



https://github.com/llvm/llvm-project/pull/147297