[clang] [llvm] [PromoteMemToReg] Insert store undef when removing lifetime markers (PR #191909)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- clang/lib/CodeGen/CGExpr.cpp llvm/lib/Transforms/Utils/PromoteMemoryToRegister.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/PromoteMemoryToRegister.cpp b/llvm/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
index 637cefeba..088c7aa51 100644
--- a/llvm/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
+++ b/llvm/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
@@ -554,8 +554,8 @@ static void removeIntrinsicUsers(AllocaInst *AI) {
         if (auto *II = dyn_cast<IntrinsicInst>(Inst))
           if (II->isLifetimeStartOrEnd()) {
             auto *Store = new StoreInst(UndefValue::get(AI->getAllocatedType()),
-                                        AI, /*isVolatile=*/false, AI->getAlign(),
-                                        Inst->getIterator());
+                                        AI, /*isVolatile=*/false,
+                                        AI->getAlign(), Inst->getIterator());
             Store->setDebugLoc(II->getDebugLoc());
           }
 

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https://github.com/llvm/llvm-project/pull/191909