[llvm] [NVPTX] Check Before inserting AddrSpaceCastInst in NVPTXLoweringAlloca (PR #106127)

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``````````bash
git-clang-format --diff 34dee0a96105d6aeb8b386efbbbfe437ab1be02e 0c9a46d59bf1df9798e2e868344db3a93ae83d49 --extensions cpp -- llvm/lib/Target/NVPTX/NVPTXLowerAlloca.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/NVPTX/NVPTXLowerAlloca.cpp b/llvm/lib/Target/NVPTX/NVPTXLowerAlloca.cpp
index 62b789c008..230f373725 100644
--- a/llvm/lib/Target/NVPTX/NVPTXLowerAlloca.cpp
+++ b/llvm/lib/Target/NVPTX/NVPTXLowerAlloca.cpp
@@ -72,10 +72,11 @@ bool NVPTXLowerAlloca::runOnFunction(Function &F) {
         Changed = true;
         auto ETy = allocaInst->getAllocatedType();
         auto LocalAddrTy = PointerType::get(ETy, ADDRESS_SPACE_LOCAL);
-        PointerType *allocInstPtrTy = dyn_cast_or_null<PointerType>(allocaInst->getType()->getScalarType());
+        PointerType *allocInstPtrTy = dyn_cast_or_null<PointerType>(
+            allocaInst->getType()->getScalarType());
         assert(allocInstPtrTy && "AllocInst scalar type is not a PointerType.");
-        Instruction* NewASCToGeneric = allocaInst;
-        if(allocInstPtrTy->getAddressSpace() != ADDRESS_SPACE_LOCAL) {
+        Instruction *NewASCToGeneric = allocaInst;
+        if (allocInstPtrTy->getAddressSpace() != ADDRESS_SPACE_LOCAL) {
           // Only insert a new AddrSpaceCastInst if
           // allocaInst is not already in ADDRESS_SPACE_LOCAL.
           auto NewASCToLocal =

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https://github.com/llvm/llvm-project/pull/106127