[dragontamer]

You study autovectorizers, then you enable autovectorization warning flags, and carefully read your compilers output.

If the compiler says autovectorization failed, you rewrite the code until the autovectorizer works.

https://docs.microsoft.com/en-us/cpp/build/reference/qvec-re...

[janwas]

hm, I have had limited success with such nudging - it's certainly not a programming model with a predictable outcome. And as soon as the compiler or its flags are updated, maybe the situation changes.