[llvm] [LLVM][DAGCombiner] Look through freeze when combining extensions of loads (PR #175022)

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

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``````````diff
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
index 519ca236c..5875b774f 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
@@ -1217,7 +1217,9 @@ void DAGTypeLegalizer::SplitVectorResult(SDNode *N, unsigned ResNo) {
     break;
   case ISD::MERGE_VALUES: SplitRes_MERGE_VALUES(N, ResNo, Lo, Hi); break;
   case ISD::AssertZext:   SplitVecRes_AssertZext(N, Lo, Hi); break;
-  case ISD::AssertSext:   SplitVecRes_AssertSext(N, Lo, Hi); break;
+  case ISD::AssertSext:
+    SplitVecRes_AssertSext(N, Lo, Hi);
+    break;
   case ISD::VSELECT:
   case ISD::SELECT:
   case ISD::VP_MERGE:

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https://github.com/llvm/llvm-project/pull/175022