[llvm] [LV][NFC] Fix "vectorization is possible but not beneficial" message (PR #228024)

[Graham Hunter via llvm-commits]

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@@ -91,7 +91,7 @@ loop.end:
 define i64 @vectorization_not_profitable_due_to_trunc(ptr dereferenceable(800) %src) {
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huntergr-arm wrote:

Should the name of the test change too if this is not considered an issue of profitability?

Though it seems like we should be able to convert that to a comparison of the first bit of the loaded value instead of a trunc. Maybe a dedicated test would be better if possible?

https://github.com/llvm/llvm-project/pull/228024