Description: A Branch Target Buffer (BTB) is a cache that stores the target addresses of previously executed branch instructions. Its main function is to improve processing efficiency in computer architectures by reducing the wait time associated with executing branches in the instruction flow. When a CPU encounters a branch instruction, it needs to determine the target address to continue execution. Without a buffer, this process can result in wait cycles, slowing down overall system performance. The Branch Target Buffer allows the CPU to quickly access the most recent target addresses, thereby minimizing latency. This mechanism is especially relevant in various architectures, which are characterized by their design and focus on efficiency. By implementing a Branch Target Buffer, processors can predict and execute instructions more smoothly, resulting in a significant increase in processing speed. Additionally, this type of buffer can be part of more advanced branch prediction techniques, where the CPU attempts to anticipate the execution flow and pre-load instructions, further enhancing performance. In summary, the Branch Target Buffer is a crucial component in optimizing the performance of modern architectures, enabling faster and more efficient execution of branch instructions.
