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target/arm: Implement vector float32 to bfloat16 conversion

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This is BFCVT{N,T} for both AArch64 AdvSIMD and SVE,
and VCVT.BF16.F32 for AArch32 NEON.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210525225817.400336-5-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2021-05-25 15:58:09 -07:00 • committed by Peter Maydell
parent 3a98ac40fa
commit d29b17ca3e
9 changed files with 95 additions and 0 deletions
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target/arm/helper.h
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@ -144,6 +144,7 @@ DEF_HELPER_3(vfp_cmped, void, f64, f64, env)
DEF_HELPER_2(vfp_fcvtds, f64, f32, env)
DEF_HELPER_2(vfp_fcvtsd, f32, f64, env)
DEF_HELPER_FLAGS_2(bfcvt, TCG_CALL_NO_RWG, i32, f32, ptr)
DEF_HELPER_FLAGS_2(bfcvt_pair, TCG_CALL_NO_RWG, i32, i64, ptr)
DEF_HELPER_2(vfp_uitoh, f16, i32, ptr)
DEF_HELPER_2(vfp_uitos, f32, i32, ptr)