Linus Torvalds writes: (Summary) Anything else is absolutely
guaranteed to cause problems down the line.
guaranteed to cause problems down the line.
And even if you ignore that "maintenance problems down the line" issue ("we can fix them when they happen") I don't want to see games like this, because I'm pretty sure it breaks the optimized xsave by tagging the state as being dirty.
the state as being dirty.
So no. Benchmarks use big arrays and/or dense working sets etc to "prove" how good the vector version is, and then you end up in situations where it's used once per fairly small packet for an interrupt, and it's actually much worse than doing it by hand.
guaranteed to cause problems down the line.
And even if you ignore that "maintenance problems down the line" issue ("we can fix them when they happen") I don't want to see games like this, because I'm pretty sure it breaks the optimized xsave by tagging the state as being dirty.
the state as being dirty.
So no. Benchmarks use big arrays and/or dense working sets etc to "prove" how good the vector version is, and then you end up in situations where it's used once per fairly small packet for an interrupt, and it's actually much worse than doing it by hand.
