如何衡量LC3汇编语言程序的性能？

Question

例如，有许多用于右移位的LC3汇编程序，根据程序的运行速度来评估它们有意义吗？有没有一种方法可以将汇编程序嵌入到python等脚本语言中来测量其速度？

Answer 1

It can be measured indirectly via running a script:
1: create a script for lc3sim denoted as: lc3_run.txt
    #cat lc3_run.txt
        file test.obj
        c
    #

2. create a shell script denoted as: perf_test.sh
    #cat perf_test.sh
        set -x
        n=0
        while [ $n -lt 1000 ]
        do
            lc3sim  -s lc3_run.txt
            ((n+=1))
            echo $n
        done
     #chmod +x perf_test.sh
     #time ./perf_test.sh
        real    0m14.512s
        user    0m3.552s
        sys 0m3.304s

    #3. compare the run time to evaluate which one is faster under 
        same conditions (HW/SW)

For related reference: <a href="https://softwareengineering.stackexchange.com/questions/357146/how-to-evaluate-efficiency-of-assembler-code "/> efficiency </a>