[llvm] [RISCV] Transform build_vector((binop X_i, C_i)..) to binop (build_ve… (PR #67358)

[Luke Lau via llvm-commits]

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@@ -13337,6 +13337,57 @@ static SDValue performSELECTCombine(SDNode *N, SelectionDAG &DAG,
   return tryFoldSelectIntoOp(N, DAG, FalseVal, TrueVal, /*Swapped*/true);
 }
 
+/// IF we have a build_vector where each lanes is binop X, C, where C
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lukel97 wrote:

```suggestion
/// IF we have a build_vector where each lane is binop X, C, where C
```

https://github.com/llvm/llvm-project/pull/67358