[llvm] [SelectionDAG] Fold VECREDUCE_MUL of a constant BUILD_VECTOR (PR #210126)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp --diff_from_common_commit
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``````````diff
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 86476091a..61560392b 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -7822,7 +7822,7 @@ SDValue SelectionDAG::FoldConstantArithmetic(unsigned Opcode, const SDLoc &DL,
       }
       EVT EltVT = N1.getValueType().getScalarType();
       return getAnyExtOrTrunc(getConstant(Acc, DL, EltVT), DL, VT);
-    } 
+    }
 
     // Constant fold VECREDUCE_MUL with a BUILD_VECTOR of integer constants.
     if (Opcode == ISD::VECREDUCE_MUL &&

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https://github.com/llvm/llvm-project/pull/210126