[llvm] [IR] Split vector.splice into vector.splice.left and vector.splice.right (PR #170796)

[Luke Lau via llvm-commits]

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@@ -1102,10 +1102,13 @@ Value *IRBuilderBase::CreateVectorSplice(Value *V1, Value *V2, int64_t Imm,
 
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lukel97 wrote:

I guess it's an oversight. But with the split splice.left/right intrinsics you'll be able to create splices with offsets greater than the i32 signed max. I think in a follow up patch I would propose to split  IRBuilderBase::CreateVectorSplice into IRBuilderBase::CreateVectorSpliceLeft/Right anyway.

https://github.com/llvm/llvm-project/pull/170796