Clang emits a warning if you ask it to vectorize a loop and it can't; you can th...

		charleslmunger on Oct 21, 2024 \| parent \| context \| favorite \| on: Learn Rust the Dangerous Way Clang emits a warning if you ask it to vectorize a loop and it can't; you can then promote that to an error. But even if the loop vectorizes, that doesn't mean that it vectorizes in the optimal way - my understanding is that pros write their loops with intrinsics specifying the operations they want for this reason. https://godbolt.org/#z:OYLghAFBqd5QCxAYwPYBMCmBRdBLAF1QCcAaP...

Warn-to-error promotion is a good point. I kind of wish something like this would exist on the language level.