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

[bugzilla-daemon at libre-soc.org]

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

--- Comment #1 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
examining the shift operations, they generate CR0, and optionally the
Arithmetic ones will set CA and also read carry in.

do the Arith Shift also set the overflow flag?

microwatt does not have OV set, which tends to suggest that we can drop XER.SO
from the output regspec for this pipeline.

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