From 3a98ac40fa9fca85bb37f4281e872b7519e733c5 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Tue, 25 May 2021 15:58:08 -0700 Subject: target/arm: Implement scalar float32 to bfloat16 conversion This is the 64-bit BFCVT and the 32-bit VCVT{B,T}.BF16.F32. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson Message-id: 20210525225817.400336-4-richard.henderson@linaro.org Signed-off-by: Peter Maydell --- target/arm/translate-vfp.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'target/arm/translate-vfp.c') diff --git a/target/arm/translate-vfp.c b/target/arm/translate-vfp.c index 2316e105ac..d01e465821 100644 --- a/target/arm/translate-vfp.c +++ b/target/arm/translate-vfp.c @@ -3085,6 +3085,30 @@ static bool trans_VCVT_f64_f16(DisasContext *s, arg_VCVT_f64_f16 *a) return true; } +static bool trans_VCVT_b16_f32(DisasContext *s, arg_VCVT_b16_f32 *a) +{ + TCGv_ptr fpst; + TCGv_i32 tmp; + + if (!dc_isar_feature(aa32_bf16, s)) { + return false; + } + + if (!vfp_access_check(s)) { + return true; + } + + fpst = fpstatus_ptr(FPST_FPCR); + tmp = tcg_temp_new_i32(); + + vfp_load_reg32(tmp, a->vm); + gen_helper_bfcvt(tmp, tmp, fpst); + tcg_gen_st16_i32(tmp, cpu_env, vfp_f16_offset(a->vd, a->t)); + tcg_temp_free_ptr(fpst); + tcg_temp_free_i32(tmp); + return true; +} + static bool trans_VCVT_f16_f32(DisasContext *s, arg_VCVT_f16_f32 *a) { TCGv_ptr fpst; -- cgit v1.2.3