[llvm] [LV] Pre-committing tests for changing loop interleaving count computation (PR #70272)

[Florian Hahn via llvm-commits]

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+; RUN: opt < %s -force-vector-width=64 -O3 -S -pass-remarks=loop-vectorize 2>&1 | FileCheck %s
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fhahn wrote:

please don't use `-O3`, as this makes the test prone to failing due to changes in other parts of the pipeline.

Also, what's the motivation for forcing vector-width to 64 here? It is an impossible VF for AArch64. Would it be possible to just let the cost model also pick the VF?

https://github.com/llvm/llvm-project/pull/70272