[llvm] [LoongArch] Optimize vreplgr2vr + vinsgr2vr intrinsic sequence (PR #115803)

[via llvm-commits]

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@@ -129,6 +129,7 @@ enum NodeType : unsigned {
   VILVH,
   VSHUF4I,
   VREPLVEI,
+  VREPLGR2VR,
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wangleiat wrote:

Can the definition of this node be omitted if no further processing is done with it?

https://github.com/llvm/llvm-project/pull/115803