s390x/tcg: Implement VECTOR UNPACK *
Combine all variant in a single handler. As source and destination have different element sizes, we can't use gvec expansion. Expand manually. Also watch out for overlapping source and destination registers. Use a safe evaluation order depending on the operation. Reviewed-by: NRichard Henderson <richard.henderson@linaro.org> Signed-off-by: NDavid Hildenbrand <david@redhat.com> Message-Id: <20190307121539.12842-33-david@redhat.com> Signed-off-by: NCornelia Huck <cohuck@redhat.com>
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