In this example, we create a SelectionDAG object and call its getDataLayout method to retrieve the target platform's data layout. We then use the getTypeSizeInBits method of the DataLayout object to retrieve the size of a 32-bit integer (in bits), and divide by 8 to convert to bytes. Package library: LLVM 2. Creating a new constant value of a target-specific size:c++ #include "llvm/CodeGen/SelectionDAG.h" int main() { llvm::SelectionDAG dag(/* ... */); const llvm::DataLayout &dl = dag.getDataLayout(); uint64_t size = dl.getPointerSizeInBits() / 8; // `size` now contains the size of a pointer on the target platform llvm::ConstantInt *c = llvm::ConstantInt::get(dag.getContext(), llvm::APInt(size * 8, 42)); // `c` now contains a ConstantInt with a value of 42 and a size of `size` bytes return 0; } ``` In this example, we use the getDataLayout method to retrieve the target platform's data layout and use the getPointerSizeInBits method of the DataLayout object to retrieve the size of a pointer. We then use these values to create a new ConstantInt object with a value of 42 and a size equal to that of a pointer on the target platform. Package library: LLVM