alt Hacker NewsWhy? Automatic vectorization is pretty bad and has been for years, but wouldn't it be nice if the compiler could unroll-loops and use SIMD instructions to make your code faster while also being correct?
Why? Automatic vectorization is pretty bad and has been for years, but wouldn't it be nice if the compiler could unroll-loops and use SIMD instructions to make your code faster while also being correct?
If you are using SIMD instructions on x86 you probably want the unaligned ones