target/arm: Handle FPCR.AH in SVE FTSSEL

The negation step in the SVE FTSSEL insn mustn't negate a NaN when
FPCR.AH is set.  Pass FPCR.AH to the helper via the SIMD data field
and use that to determine whether to do the negation.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2 files changed