[llvm] [LoopVectorize] Improve Vectorization of Low Trip Count Loops (PR #195823)

[Sander de Smalen via llvm-commits]

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+; REQUIRES: asserts
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sdesmalen-arm wrote:

What is the reason for having both  `sve-small-tripcount-vf-plus-one.ll` and `sve-small-tripcount-vf-plus-one-cost.ll`, where some of the tests seem the same, but have different check/RUN lines? It makes more sense to have both in a single file.

https://github.com/llvm/llvm-project/pull/195823