[Libre-soc-bugs] [Bug 352] virtual (dependency-tracked) regfile (cache) needed

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=352

--- Comment #9 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
https://groups.google.com/g/comp.arch/c/vdgvrYGoxTM/m/KerzlHs0BgAJ
https://libre-soc.org/3d_gpu/isa_to_virtual_regs/

drew it out this morning (ish), this is just the lookup/translation,
have to do the reg-rename logic separately which will "drive" the set/reset
lines.

hilariously whilst we are looking to reduce the number of virtual regs
when it comes to doing Monster CPUs there would actually be way more
virtual regs than real ones (a la POWER10 which can have 1,000 instructions
in-flight and is 8-way multi-issue)

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