On Thu, Feb 3, 2022 at 7:21 AM Didier Spezia <didier...@gmail.com> wrote: > > It seems Aarch64 benefits more from the register-based ABI than x86_64. > I don''t see really why. Does anyone have a clue?
My view is that the x86 architecture has fewer registers and has had a massive decades-long investment in performance, so stack operations are highly optimized in hardware, including things like forwarding values stored in the stack by the caller to the retrieval from the stack by the callee without waiting even for the memory cache. The ARM architecture has more registers and has historically focused more on power savings than on raw performance, so it has less optimization on stack handling and benefits more from a smarter compiler. In my experience testing compiler optimizations can be frustrating on x86 because the hardware is just so good. Almost every other processor architecture shows bigger benefits from compiler optimizations. Ian -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/CAOyqgcVBg%2BWkrT636M-VuBjnaSOjUiAd_Einso_%3DBWFWMKRttA%40mail.gmail.com.
