动态指令数是 CPU 为特定程序执行实际执行的指令数，而静态指令数是程序拥有的指令数.

The dynamic instruction count is the actual number of instructions executed by the CPU for a specific program execution, whereas the static instruction count is the number of instruction the program has.

我们通常使用动态指令计数，例如您的程序中有一个循环，然后一些指令被执行多次.此外，在存在分支的情况下，某些指令可能根本无法执行.

We usually use dynamic instruction count as if for example you have a loop in your program then some instructions get executed more than once. Also, in the presence of branches, some instructions may not be executed at all.