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target/arm: Implement fp16 for Neon VRECPE, VRSQRTE using gvec 

We already have gvec helpers for floating point VRECPE and
VRQSRTE, so convert the Neon decoder to use them and
add the fp16 support.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200828183354.27913-25-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2020-08-28 19:33:33 +01:00
parent e4a6d4a69e
commit 4a15d9a3b3
1 changed files with 29 additions and 2 deletions
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31
target/arm/translate-neon.c.inc
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@ -3857,13 +3857,40 @@ static bool do_2misc_fp(DisasContext *s, arg_2misc *a,
return do_2misc_fp(s, a, FUNC); \
}
DO_2MISC_FP(VRECPE_F, gen_helper_recpe_f32)
DO_2MISC_FP(VRSQRTE_F, gen_helper_rsqrte_f32)
DO_2MISC_FP(VCVT_FS, gen_helper_vfp_sitos)
DO_2MISC_FP(VCVT_FU, gen_helper_vfp_uitos)
DO_2MISC_FP(VCVT_SF, gen_helper_vfp_tosizs)
DO_2MISC_FP(VCVT_UF, gen_helper_vfp_touizs)
#define DO_2MISC_FP_VEC(INSN, HFUNC, SFUNC) \
static void gen_##INSN(unsigned vece, uint32_t rd_ofs, \
uint32_t rm_ofs, \
uint32_t oprsz, uint32_t maxsz) \
{ \
static gen_helper_gvec_2_ptr * const fns[4] = { \
NULL, HFUNC, SFUNC, NULL, \
}; \
TCGv_ptr fpst; \
fpst = fpstatus_ptr(vece == MO_16 ? FPST_STD_F16 : FPST_STD); \
tcg_gen_gvec_2_ptr(rd_ofs, rm_ofs, fpst, oprsz, maxsz, 0, \
fns[vece]); \
tcg_temp_free_ptr(fpst); \
} \
static bool trans_##INSN(DisasContext *s, arg_2misc *a) \
{ \
if (a->size == MO_16) { \
if (!dc_isar_feature(aa32_fp16_arith, s)) { \
return false; \
} \
} else if (a->size != MO_32) { \
return false; \
} \
return do_2misc_vec(s, a, gen_##INSN); \
}
DO_2MISC_FP_VEC(VRECPE_F, gen_helper_gvec_frecpe_h, gen_helper_gvec_frecpe_s)
DO_2MISC_FP_VEC(VRSQRTE_F, gen_helper_gvec_frsqrte_h, gen_helper_gvec_frsqrte_s)
static bool trans_VRINTX(DisasContext *s, arg_2misc *a)
{
if (!arm_dc_feature(s, ARM_FEATURE_V8)) {