On 10/21/19 1:57 AM, David Hildenbrand wrote:
> Testing this, there seems to be something messed up. We are dealing with
> unsigned numbers. "Each operand is treated as an unsigned binary integer."
> Let's just implement as written in the PoP:
>
> "A subtraction is performed by adding the contents of
> the second operand with the bitwise complement of
> the third operand along with a borrow indication from
> the rightmost bit position of the fourth operand and
> the result is placed in the first operand."
>
> We can reuse gen_ac2_i64().
>
> Fixes: 48390a7c2716 ("s390x/tcg: Implement VECTOR SUBTRACT WITH BORROW
> INDICATION")
> Signed-off-by: David Hildenbrand <da...@redhat.com>
> ---
> target/s390x/translate_vx.inc.c | 10 +++++-----
> 1 file changed, 5 insertions(+), 5 deletions(-)
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
r~
