from llvmlite import ir

def parse_llvm_ir(ir_text: str) -> MiddleFunction:
    """将 LLVM IR 文本转换为 MiddleIR 结构（简化版）"""
    module = ir.Module()
    module.parse(ir_text)
    
    # 提取第一个函数
    func = list(module.functions)[0]
    middle_func = MiddleFunction(func.name)
    
    # 转换基本块和指令
    for block in func.blocks:
        mid_block = MiddleBasicBlock(block.name)
        for instr in block.instructions:
            opcode = instr.opcode
            operands = [str(op) for op in instr.operands]
            mid_instr = MiddleInstruction(opcode, operands)
            mid_block.instructions.append(mid_instr)
        middle_func.basic_blocks.append(mid_block)
    
    return middle_func