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target/arm: Implement scalar float32 to bfloat16 conversion

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This is the 64-bit BFCVT and the 32-bit VCVT{B,T}.BF16.F32.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210525225817.400336-4-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2021-05-25 15:58:08 -07:00 • committed by Peter Maydell
parent fc5200ee45
commit 3a98ac40fa
5 changed files with 51 additions and 0 deletions
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target/arm/vfp.decode
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@ -205,6 +205,8 @@ VCVT_f64_f16 ---- 1110 1.11 0010 .... 1011 t:1 1.0 .... \
# VCVTB and VCVTT to f16: Vd format is always vd_sp;
# Vm format depends on size bit
VCVT_b16_f32 ---- 1110 1.11 0011 .... 1001 t:1 1.0 .... \
vd=%vd_sp vm=%vm_sp
VCVT_f16_f32 ---- 1110 1.11 0011 .... 1010 t:1 1.0 .... \
vd=%vd_sp vm=%vm_sp
VCVT_f16_f64 ---- 1110 1.11 0011 .... 1011 t:1 1.0 .... \