[llvm] [InterleavedLoadCombine] Index candidates to avoid quadratic matching (PR #213053)

[Madhur Amilkanthwar via llvm-commits]

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madhur13490 wrote:

Yeah, but the current implementation is function-wide and in this patch I am replacing the scanning logic. Keeping the tables BB-wide can be a follow-up. 

https://github.com/llvm/llvm-project/pull/213053