[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:

IIUC this test should ideally check the cost model selecting the expected VF and IC. Forcing a VF seems to leave a gap in testing here and it would be better to not artificially force the VF, in particular because the cos model is expected to pick 16 for the loops?

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