tcg-aarch64: Support div, rem
Clean up multiply at the same time. For remainder, generic code will produce mul+sub, whereas we can implement with msub. Signed-off-by: NRichard Henderson <rth@twiddle.net> Reviewed-by: NClaudio Fontana <claudio.fontana@huawei.com> Tested-by: NClaudio Fontana <claudio.fontana@huawei.com>
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