Are there any tasks in the field of system programming for which it is advisable to use only assembler?

C

cthulhudx2015-11-06 17:05:14

C++ / C#

cthulhudx, 2015-11-06 17:05:14

Are there any tasks in the field of system programming for which it is advisable to use only assembler? Are there bottlenecks in which the use of languages such as C / C ++ does not provide the means to implement the task, or can absolutely everything be written in C - from the driver to the operating system loader?

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nirvimel, 2015-11-06
@cthulhudx

C and C++ are cross-platform languages. All platform-specific things are written in assembler, for example: reading / writing processor system registers in the OS kernel.
But about the strict need to use assembler for the sake of performance, I would argue. Compilers may not keep up with the hardware vendors who are constantly throwing new technologies (such as AVX) into new hardware, but it's only a matter of time before compilers learn these technologies.
In addition, Intel did not create its own compiler in vain. It is naive to think that a person is able to use the features of the intel processor in some more optimal way than the compiler from intel itself.