s390x/tcg: Implement VECTOR TEST UNDER MASK
Let's return the cc value directly via cpu_env. Unfortunately there isn't a simple way to calculate the value lazily - one would have to calculate and store e.g. the population count of the mask and the result so it can be evaluated in a cc helper. But as VTM only sets the cc, we can assume the value will be needed soon either way. Reviewed-by: NRichard Henderson <richard.henderson@linaro.org> Signed-off-by: NDavid Hildenbrand <david@redhat.com>
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