[libre-riscv-dev] [Bug 186] Create decoder for SOC

bugzilla-daemon at libre-riscv.org bugzilla-daemon at libre-riscv.org
Mon Feb 24 18:42:18 GMT 2020


--- Comment #6 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Michael Nolan from comment #5)

> Huh ok. So there's a SimpleV translator between the decoder and the
> dependency matrices/issue queue?

yes.  that's how SimpleV works - it's what it is.

think about it: SimpleV is a hardware for-loop.  the Program Counter
pauses, and a *SUB-EXECUTION* loop occurs (for i in range(VL))

however each output from that sub-execution loop goes...

... into the instruction issue.

ta-daaa :)

therefore, lmw can quite literally be replaced with a SimpleV
"SVPrefix" instruction.  SVP{VL=32}.LD r1, r2#D.


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