alt Hacker NewsBack when I was in college in the late 00s we were advised to not attempt to optimise using assembly unless we really found a bottleneck the compiler missed.
Back when I was in college in the late 00s we were advised to not attempt to optimise using assembly unless we really found a bottleneck the compiler missed.
Correct. There are still some situations that benefit from it, but only using the extended instruction sets that compilers can't/won't generate. Even then you should at least try writing the C code and seeing if it will auto-vectorize. Even C# can auto-vectorize some cases now.
Things like "add with saturation" and the special AES instructions.