[libre-riscv-dev] [Bug 339] create POWER9 ROTATE (SHIFTROT) pipeline

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=339

--- Comment #8 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Luke Kenneth Casson Leighton from comment #7)
> sradi is different
> 
> carry <- s & ((r& ¬m) != 0) CA <- carry CA32 <- carry
> 
> best add CA and CA32 to the fields that can be returned.

sorted.  it's a bit of a mess, had to special-case it, but it's
functional.

also noted that rotator.vhdl has changed (support for OP_EXTSWSLI
which i may add next)

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