[llvm] [InstCombine] Replace getAllocatedType() with getAllocationSize() (PR #177435)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/IR/Instructions.cpp llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.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/InstCombine/InstCombineLoadStoreAlloca.cpp b/llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
index ce443dc12..d27ad636a 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
@@ -511,7 +511,7 @@ Instruction *InstCombinerImpl::visitAllocaInst(AllocaInst &AI) {
     // elsewhere.
     if (AI.isArrayAllocation())
       return replaceOperand(AI, 0,
-          ConstantInt::get(AI.getArraySize()->getType(), 1));
+                            ConstantInt::get(AI.getArraySize()->getType(), 1));
 
     // Get the first instruction in the entry block.
     BasicBlock &EntryBlock = AI.getParent()->getParent()->getEntryBlock();

``````````

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https://github.com/llvm/llvm-project/pull/177435