[llvm] [CodeGen] Add scalarization fallback for multi-result scalable intrinsics (PR #218634)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,h -- llvm/include/llvm/Transforms/Utils/LowerVectorIntrinsics.h llvm/lib/CodeGen/PreISelIntrinsicLowering.cpp llvm/lib/CodeGen/TargetLoweringBase.cpp llvm/lib/Transforms/Utils/LowerVectorIntrinsics.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/Transforms/Utils/LowerVectorIntrinsics.cpp b/llvm/lib/Transforms/Utils/LowerVectorIntrinsics.cpp
index 6e5c80a12..b4d17f18a 100644
--- a/llvm/lib/Transforms/Utils/LowerVectorIntrinsics.cpp
+++ b/llvm/lib/Transforms/Utils/LowerVectorIntrinsics.cpp
@@ -18,8 +18,8 @@ bool llvm::lowerUnaryVectorIntrinsicAsLoop(Module &M, CallInst *CI) {
   Type *RetTy = CI->getType();
   auto *StructRetTy = dyn_cast<StructType>(RetTy);
   unsigned NumResults = StructRetTy ? StructRetTy->getNumElements() : 1;
-  auto *VecTy = cast<VectorType>(StructRetTy ? StructRetTy->getElementType(0)
-                                             : RetTy);
+  auto *VecTy =
+      cast<VectorType>(StructRetTy ? StructRetTy->getElementType(0) : RetTy);
 
   BasicBlock *PreLoopBB = CI->getParent();
   BasicBlock *PostLoopBB = nullptr;

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https://github.com/llvm/llvm-project/pull/218634