[llvm] [LV] Fix missing MetaData for histogram instructions (PR #134241)

[Graham Hunter via llvm-commits]

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@@ -825,9 +825,67 @@ for.exit:
 
 attributes #0 = { "target-features"="+sve2" vscale_range(1,16) }
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huntergr-arm wrote:

nit: We now have two copies of this attribute list, I think you can remove this one.

https://github.com/llvm/llvm-project/pull/134241