[libre-riscv-dev] [Bug 325] create POWER9 TRAP pipeline

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=325

--- Comment #66 from Cole Poirier <colepoirier at gmail.com> ---
(In reply to Luke Kenneth Casson Leighton from comment #65)
> superb.  i moved that to a separate function (msr_check_pr) because
> it's duplicated.  note that i used the fact that in *both* cases,
> the m.If() check comes from the argument that just got copied.
> 
>    comb += msr_o.data.eq(a_i)
>    with m.If(a_i[MSR_PR]):
> 
> is exactly the same as:
> 
>    comb += msr_o.eq(a_i)
>    with m.If(msr_o[MSR_PR]):
> 
> and therefore it is not necessary to pass a_i *and* msr_o into
> msr_check_pr().

Fantatsic!

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