Re: [PATCH] target/ppc: Replicate Double->Single-Precision result

[Richard Henderson]

On 3/16/22 13:04, Lucas Coutinho wrote:
> Power ISA v3.1 formalizes the previously undefined result in
> words 1 and 3 to be a copy of the result in words 0 and 2.
>
> This affects: xvcvsxdsp, xvcvuxdsp, xvcvdpsp.
>
> And the previously undefined result in word 1 to be a copy of
> the result in word 0.
>
> This affects: xscvdpsp.
>
> Signed-off-by: Lucas Coutinho<lucas.coutinho@eldorado.org.br>
> ---
> This patch is a follow-up of:
> https://lists.gnu.org/archive/html/qemu-ppc/2022-03/msg00354.html
> which have the same behavior of the instructions altered
> ---
>   target/ppc/fpu_helper.c | 48 +++++++++++++++++++++++++++++++++++++----
>   1 file changed, 44 insertions(+), 4 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

I had a brief look for other cases, but I guess I should have looked harder.  Thanks for 
the follow-up.


r~