LLVM从GlobalVariable获取数组字面值

@array = global [3 x i32] [1, 2, 3]

#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Verifier.h"

using namespace llvm;

// 假设 module 是已经加载的 LLVM 模块
for (GlobalVariable &GV : module.globals()) {
    if (GV.getName() == "array") {
        // 检查 GV 是否是数组类型
        if (auto *ArrayTy = dyn_cast<ArrayType>(GV.getType())) {
            // 获取数组元素类型
            Type *ElemTy = ArrayTy->getElementType();
            // 获取数组大小
            unsigned NumElements = ArrayTy->getNumElements();
            // 获取数组初始值
            Constant *Initializer = GV.getInitializer();
            if (auto *ArrayInit = dyn_cast<ConstantArray>(Initializer)) {
                for (unsigned i = 0; i < NumElements; ++i) {
                    Constant *Elem = ArrayInit->getAggregateElement(i);
                    // 处理每个元素
                    // ...
                }
            }
        }
    }
}