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Building from sources
| that is just a meme spouted by /g/ autists, loosely based on some non viable heuristics like (((faster boot time))), I don't see why manufacturers would include such instructions, albeit it is a fact there are secret instructions in x86 processors, but that is a different story
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| Thanks to install gentoo meme, I now know that compiling sources on your local machine give any bytecode some kinda performance increase.
The question is, how much the peformance increase is really? And why?
I heard about special instructions that exists only on certain chips, but don't they require flags and stuff. Also why nonstandard instructions exist at all? And if they are so good, why don't (certain) devs build their stuff with a version to support them in the first place?