[llvm] [RISCV][CodeGen] Add CodeGen support of Zvzip extension (PR #189801)

[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 origin/main HEAD --extensions cpp,h -- llvm/lib/Target/RISCV/RISCVISelLowering.cpp llvm/lib/Target/RISCV/RISCVISelLowering.h --diff_from_common_commit
``````````

:warning:
The reproduction instructions above might return results for more than one PR
in a stack if you are using a stacked PR workflow. You can limit the results by
changing `origin/main` to the base branch/commit you want to compare against.
:warning:

</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 5ed6e9b99..74e26b3e2 100644
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -6246,7 +6246,7 @@ static SDValue tryWidenMaskForShuffle(SDValue Op, SelectionDAG &DAG) {
 }
 
 SDValue RISCVTargetLowering::lowerVECTOR_SHUFFLE(SDValue Op,
-                                                  SelectionDAG &DAG) const {
+                                                 SelectionDAG &DAG) const {
   SDValue V1 = Op.getOperand(0);
   SDValue V2 = Op.getOperand(1);
   SDLoc DL(Op);
@@ -6500,9 +6500,10 @@ SDValue RISCVTargetLowering::lowerVECTOR_SHUFFLE(SDValue Op,
         const unsigned MinVLMAX = Subtarget.getRealMinVLen() / EltSize;
         if (NumElts < MinVLMAX) {
           MVT ConcatVT = VT.getDoubleNumVectorElementsVT();
-          SDValue Concat = DAG.getNode(ISD::CONCAT_VECTORS, DL, ConcatVT, V1, V2);
-          SDValue Res =
-              lowerVZIP(Opc, Concat, DAG.getUNDEF(ConcatVT), DL, DAG, Subtarget);
+          SDValue Concat =
+              DAG.getNode(ISD::CONCAT_VECTORS, DL, ConcatVT, V1, V2);
+          SDValue Res = lowerVZIP(Opc, Concat, DAG.getUNDEF(ConcatVT), DL, DAG,
+                                  Subtarget);
           return DAG.getExtractSubvector(DL, VT, Res, 0);
         }
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/189801