arm/translate-a64: add FP16 x2 ops for simd_indexed
A bunch of the vectorised bitwise operations just operate on larger chunks at a time. We can do the same for the new half-precision operations by introducing some TWOHALFOP helpers which work on each half of a pair of half-precision operations at once. Hopefully all this hoop jumping will get simpler once we have generically vectorised helpers here. Signed-off-by: NAlex Bennée <alex.bennee@linaro.org> Reviewed-by: NRichard Henderson <richard.henderson@linaro.org> Message-id: 20180227143852.11175-16-alex.bennee@linaro.org Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
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