[llvm] [IR] Add llvm.vector.[de]interleave{4,6,8} (PR #139893)

[Pengcheng Wang via llvm-commits]

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@@ -167,8 +170,11 @@ namespace Intrinsic {
     } Kind;
 
     // These three have to be contiguous.
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wangpc-pp wrote:

These six?

https://github.com/llvm/llvm-project/pull/139893