On 10/21/19 1:57 AM, David Hildenbrand wrote:
> Looks like my idea of what a "borrow" is was wrong. The PoP says:
>
> "If the resulting subtraction results in a carry out of bit zero, a value
> of one is placed in the corresponding element of the first operand;
> otherwise, a value of zero is placed in the corresponding element"
>
> As clarified by Richard, all we have to do is invert the result.
>
> Fixes: 1ee2d7ba72f6 ("s390x/tcg: Implement VECTOR SUBTRACT COMPUTE BORROW
> INDICATION")
> Signed-off-by: David Hildenbrand <da...@redhat.com>
> ---
> target/s390x/translate_vx.inc.c | 7 ++++---
> target/s390x/vec_int_helper.c | 2 +-
> 2 files changed, 5 insertions(+), 4 deletions(-)
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
r~
