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>
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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
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target/ppc/fpu_helper.c | 48 +++++++++++++++++++++++++++++++++++++----
1 file changed, 44 insertions(+), 4 deletions(-)