[llvm] [RISCV] Reorder shuffle operands if one side is an identity (PR #98534)

[via llvm-commits]

github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

<details>
<summary>
You can test this locally with the following command:
</summary>

``````````bash
git-clang-format --diff 0431c61f6b80b4ba34e36e7763c58edafcbbf1a9 95bcc0309c77718be62c64f011b236738ee26251 --extensions cpp -- llvm/lib/Target/RISCV/RISCVISelLowering.cpp
``````````

</details>

<details>
<summary>
View the diff from clang-format here.
</summary>

``````````diff
diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index 2c22859846..a889939d03 100644
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -5342,7 +5342,8 @@ static SDValue lowerVECTOR_SHUFFLE(SDValue Op, SelectionDAG &DAG,
 
   // Try to pick a profitable operand order.
   bool SwapOps = DAG.isSplatValue(V2) && !DAG.isSplatValue(V1);
-  SwapOps = SwapOps ^ ShuffleVectorInst::isIdentityMask(ShuffleMaskRHS, NumElts);
+  SwapOps =
+      SwapOps ^ ShuffleVectorInst::isIdentityMask(ShuffleMaskRHS, NumElts);
 
   // Recursively invoke lowering for each operand if we had two
   // independent single source shuffles, and then combine the result via a

``````````

</details>


https://github.com/llvm/llvm-project/pull/98534