[llvm] [DAG] visitEXTRACT_SUBVECTOR - change fold helper methods to take operands instead of EXTRACT_SUBVECTOR node. NFC. (PR #138279)

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git-clang-format --diff HEAD~1 HEAD --extensions cpp -- llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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View the diff from clang-format here.
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diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index a9bf94e02..5c686f2f3 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -25158,7 +25158,6 @@ static SDValue narrowExtractedVectorBinOp(EVT VT, SDValue Src, unsigned Index,
                                                  LegalOperations))
     return V;
 
-
   // We are looking for an optionally bitcasted wide vector binary operator
   // feeding an extract subvector.
   const TargetLowering &TLI = DAG.getTargetLoweringInfo();

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https://github.com/llvm/llvm-project/pull/138279