[llvm] [LoongArch] Custom legalize vector_shuffle to xvpermi.d when possible (PR #160429)

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git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
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``````````diff
diff --git a/llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp b/llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
index cc2899731..5d4a8fd08 100644
--- a/llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
+++ b/llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
@@ -2118,8 +2118,7 @@ lowerVECTOR_SHUFFLE_XVPERMI(const SDLoc &DL, ArrayRef<int> Mask, MVT VT,
 
 /// Lower VECTOR_SHUFFLE into XVPERM (if possible).
 static SDValue lowerVECTOR_SHUFFLE_XVPERM(const SDLoc &DL, ArrayRef<int> Mask,
-                                          MVT VT, SDValue V1,
-                                          SelectionDAG &DAG,
+                                          MVT VT, SDValue V1, SelectionDAG &DAG,
                                           const LoongArchSubtarget &Subtarget) {
   // LoongArch LASX only have XVPERM_W.
   if (Mask.size() != 8 || (VT != MVT::v8i32 && VT != MVT::v8f32))
@@ -2569,8 +2568,7 @@ static SDValue lower256BitShuffle(const SDLoc &DL, ArrayRef<int> Mask, MVT VT,
     if ((Result =
              lowerVECTOR_SHUFFLE_XVPERMI(DL, Mask, VT, V1, DAG, Subtarget)))
       return Result;
-    if ((Result =
-             lowerVECTOR_SHUFFLE_XVPERM(DL, Mask, VT, V1, DAG, Subtarget)))
+    if ((Result = lowerVECTOR_SHUFFLE_XVPERM(DL, Mask, VT, V1, DAG, Subtarget)))
       return Result;
 
     // TODO: This comment may be enabled in the future to better match the

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https://github.com/llvm/llvm-project/pull/160429