2018-02-25

izard: (Default)
2018-02-25 07:11 pm

Customers

I have a good customer, I really like the guy and especially the code we optimize together. But sometimes he complains about the compiler:

1. The compiler is stupid! The loop is so simple, and yet compiler vectorized it much worse than my intrinsics did.
2. The compiler is too smart! I made an intrinsics version of the loop, and it is only 5% faster than compiler generated.

:)