In case y’all were wondering what happened to the RISC-V Bit Manipulation Extension Task Group:https://github.com/cliffordwolf/xbitmanip …
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Lemme guess: getting that level of membership costs $$$$?
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Idk how I feel about non standard extensions, tbh. On one hand, you'll get lovely amounts of fragmentation between risc-v impls. On another, code that needs said extensions probably isn't portable to begin with (or can be split into non-portable/portable parts).
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On yet another hand, seeing non-standard extensions can give others ideas. For instance, if I impl'd a RISC-V CPU, I'd probably go the picoRV32 route for IRQs, b/c well... I think the privileged spec kinda bites for space-sensitive impls.
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