[llvm] [AArch64] Use EXT for byte shuffles with leading zeros (PR #193466)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Target/AArch64/AArch64ISelLowering.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
index a73c683f6..d425d1179 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -15167,8 +15167,10 @@ SDValue AArch64TargetLowering::LowerVECTOR_SHUFFLE(SDValue Op,
                        DAG.getConstant(8, DL, MVT::i32));
   }
 
-  bool IsSplat1 = V1.getValueType() == VT && DAG.isSplatValue(V1, /*AllowUndefs=*/false);
-  bool IsSplat2 = V2.getValueType() == VT && DAG.isSplatValue(V2, /*AllowUndefs=*/false);
+  bool IsSplat1 =
+      V1.getValueType() == VT && DAG.isSplatValue(V1, /*AllowUndefs=*/false);
+  bool IsSplat2 =
+      V2.getValueType() == VT && DAG.isSplatValue(V2, /*AllowUndefs=*/false);
   for (unsigned SplatOperand : {0U, 1U}) {
     if ((SplatOperand == 0 && !IsSplat1) || (SplatOperand == 1 && !IsSplat2))
       continue;

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https://github.com/llvm/llvm-project/pull/193466