合理水平的汇编能力是一项有用的技能，特别是当您从事任何类型的系统级或嵌入式编程时，这并不是因为您必须编写那么多汇编程序，而是因为有时了解盒子的实际功能非常重要。如果您对汇编程序的概念和问题没有低级的理解，这可能会非常困难。

然而，至于在汇编器中实际编写大量代码，有几个原因导致它做得不多。

There's simply no (almost) need. Except for something like the very early system initialization and perhaps a few assembler fragments hidden in C functions or macros, all very low-level code that might once have been written in assembler can be written in C or C++ with no difficulty. Code in higher-level languages (even C and C++) condenses functionality into far fewer lines, and there is considerable research showing that the number of bugs correlates with the number of lines of source code. Ie, the same problem, solved in assembler and C, will have more bugs in assembler simply because its longer. The same argument motivates the move to higher level languages such as Perl, Python, etc. Writing in assembler, you have to deal with every single aspect of the problem, from detailed memory layout, instruction selection, algorithm choices, stack management, etc. Higher level languages take all this away from you, which is why are so much denser in terms of LOC.

从本质上讲，以上所有内容都与汇编程序与C或其他语言中可用的抽象级别有关。汇编程序迫使您自己制作所有的抽象，并通过您自己的自律来维护它们，而任何中级语言，如C，特别是高级语言，都可以为您提供开箱即用的抽象，以及相对容易地创建新抽象的能力。

Oh hai, I'm a dataflow system. This App I'm running, are full of varrrious components. It's a distributed app, and it resides in 3 computers, on a powerful x86 and two smaller ARMs. Most of the components are written in C++, but there is a critical one written in ASM for the x86. Also, most components have several variations: compiled for different processors, also some components have special GPU versions. Shame or not, I have a script component (a wrapper component calls a script), which prints report, but only once a year. It doesn't even hurt that it's just a script, a slow script.

作为一个智能数据流应用程序，我知道，我的架构只适合特定的任务，其中信号/数据通过图形流动，例如自动化，视频/图像处理，音频处理(所有合成器使用数据流)，但幸运的是，这些应用领域是非常需要功率的，其中优化是必不可少的。

我很确定有一天会出现一些其他的架构，它们也是关于优化(以及其他让编程更容易等的东西)，它们将能够覆盖更多或其他领域，而我，数据流不能。

因此，“C vs ASM”的话题并不是一个真正的困境。这就像是在争论数字合成器还是模拟合成器更好(就像我之前提到的，我一直在研究合成器)。我建议，做好听的音乐。或倾听。无论什么。C不是相对于ASM。无论如何，我从未见过一个C程序被ASM攻击，反之亦然。

对不起，我的英语不好，尽管我不是一个新技术，我不是广为人知，我是一个孩子。很有希望。来，看看我的资料!

C是一个宏汇编器!这是最好的一个!

它可以做几乎所有汇编程序可以做的事情，它是可移植的，在大多数极少数情况下，当它不能做一些事情时，你仍然可以使用嵌入式汇编代码。这就只留下了一小部分程序，你绝对需要用汇编来编写，而且只需要汇编。

更高层次的抽象和可移植性使大多数人更值得用c语言编写系统软件。尽管你现在可能不需要可移植性，但如果你在编写某个程序上投入了大量的时间和金钱，你可能不想把自己限制在将来可以使用它的地方。

我喜欢用汇编语言编程，但是用高级语言做同样的事情需要更多的代码，而且代码行和错误之间有直接的联系。(这在几十年前的《人月神话》中就有解释。)

可以把C语言看作是“高级汇编”，但再往上走几步，你就进入了另一个世界。在c#中，你不需要三思就可以写这样的代码:

foreach (string s in listOfStrings) { /* do stuff */ }

这将是几十行，甚至几百行的汇编代码，每个实现它的程序员将采用不同的方法，下一个来的人将不得不找出它。因此，如果您相信(许多人都相信)程序主要是为其他人阅读而编写的，那么汇编的可读性就不如典型的HLL。

编辑:我积累了一个用于常见任务的个人代码库，以及用于实现类c控制结构的宏。但在90年代，当gui成为常态时，我遇到了瓶颈。太多的时间被花在了例行公事上。

我的上一个需要使用ASM的任务是在几年前，编写代码来对抗恶意软件。没有用户界面，所以只有有趣的部分，没有臃肿的部分。

不同之处在于，汇编程序是一门代码的艺术，是一幅出自艺术家之手的好画。你比蹩脚的编译器代码聪明吗?如果你是，使用它或照顾你的绘画与c和汇编一起。

随着汇编变得越来越不常见，出现了一个恶性循环:随着高级语言的成熟，汇编语言指令集的构建越来越少地是为了方便程序员，而更多地是为了方便编译器。

So now, realistically, it may be very hard to make the right decisions on, say, which registers you should use or which instructions are slightly more efficient. Compilers can use heuristics to figure out which tradeoffs are likely to have the best payoff. We can probably think through smaller problems and find local optimizations that might beat our now pretty sophisticated compilers, but odds are that in the average case, a good compiler will do a better job on the first try than a good programmer probably will. Eventually, like John Henry, we might beat the machine, but we might seriously burn ourselves out getting there.

Our problems are also now quite different. In 1986 I was trying to figure out how to get a little more speed out of small programs that involved putting a few hundred pixels on the screen; I wanted the animation to be less jerky. A fair case for assembly language. Now I'm trying to figure out how to represent abstractions around contract language and servicer policy for mortgages, and I'd rather read something that looks close to the language that the business folks speak. Unlike LISP macros, Assembly macros don't enforce much in the way of rules, so even though you might be able to get something reasonably close to a DSL in a good assembler, it'll be prone to all sorts of quirks that won't cause me problems if I wrote the same code in Ruby, Boo, Lisp, C# or even F#.

如果您的问题很容易用高效的汇编语言来表达，那么您的能力就更强了。