pervognsen, 6 months ago

@shachaf I think a guarantee (AVX CPUID flag must be set, natural alignment is a requirement, etc) was only very recently (I found an SO answer that says 2021) added to Intel's instruction manual so compilers are probably lagging. In the mean time you can implement it yourself using intrinsics.

pkhuong, 6 months ago

@pervognsen @shachaf Wait, when did we get that guarantee? Intel only, I guess?

rygorous, 6 months ago

@pkhuong @pervognsen @shachaf I don't thing it's even in the manuals, it was a gentleman's agreement on LKML or something along those lines.