[llvm] [SelectionDAG] Recurse through mask expression trees in WidenVSELECTMask (PR #188085)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp --diff_from_common_commit
``````````

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``````````diff
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h b/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
index 53425d257..65a843ba9 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
@@ -1165,8 +1165,8 @@ private:
 
   /// Recursively convert a mask expression tree to ToVT, walking through
   /// mask-preserving operations down to SETCC leaves. Avoids redundant
-  /// extend/truncate chains that arise when each node is converted independently.
-  /// Returns SDValue() if the tree cannot be converted.
+  /// extend/truncate chains that arise when each node is converted
+  /// independently. Returns SDValue() if the tree cannot be converted.
   SDValue convertMaskTree(SDValue V, EVT ToVT, unsigned Depth = 0);
 
   //===--------------------------------------------------------------------===//

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https://github.com/llvm/llvm-project/pull/188085