How to write optimized code for an instruction set not supported by my computer?
Hello.
What is the usual workflow to write code that takes advantage of an
instruction set that is not present in my computer (either in assembly
or using intrinsic functions that represent those instructions in an
higher level language)?. For example, if I want to write code for
decoding and encoding Base64 that uses AVX instructions in my machine
that has no support for any version of AVX (only SSE 4.2 and CLMUL),
what is the recommended workflow?.
It seems like I *could* develop within a virtual machine emulated with
Bochs that supports these instructions, but that would give a very big
overhead, since I would have to emulate a whole system, and Bochs has no
multithreading support (so that will make it less efficient if I want to
write multithreaded code). Is there a better option?
Regards and thanks in advance.
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