ゲームエミュレータとコンパイラ開発元です


going to post random handwritten notes i make when i work on stuff, even if they don't really make sense, both because i want to and i usually end up losing them only to have them pop up again after the period i actually needed them. thanks for subscribing to the note archive tysm really appreciate it x

ignore the thing above the latencies, if you know you know. i used this sheet for other stuff before using it for various notes


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in reply to @Lioncache's post:

oh, for some clarity's sake, the uzp1/uzp2/zip shenanigans in the top left were me spitballing how to nicely emulate part of x86's vphsubd on SVE capable arm hardware, since there's nothing that's part of the sve/adv. simd isa bits that really maps to horizontal subtraction (we only have addp)

so, essentially only flipping the signs on the odd elements then firing it off to addp