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| author | Peter Maydell <peter.maydell@linaro.org> | 2025-07-18 18:30:28 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2025-07-21 11:13:55 +0100 |
| commit | 67fbc4c8079226eb9e47369cc45eb3fe56c3c9c3 (patch) | |
| tree | 81d83157aeda44032a0e9275ccc4e7ad0796237d | |
| parent | 929bec5581966c43d083588f9be38af48150c4fe (diff) | |
| download | qemu-67fbc4c8079226eb9e47369cc45eb3fe56c3c9c3.zip qemu-67fbc4c8079226eb9e47369cc45eb3fe56c3c9c3.tar.gz qemu-67fbc4c8079226eb9e47369cc45eb3fe56c3c9c3.tar.bz2 | |
target/arm: Add BFMLA, BFMLS (indexed)
FEAT_SVE_B16B16 adds bfloat16 versions of the FMLA and FMLS insns in
the SVE floating-point multiply-add (indexed) insn group. Implement
these.
Fixes: 7b1613a1020d2942 ("target/arm: Enable FEAT_SME2p1 on -cpu max")
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20250718173032.2498900-7-peter.maydell@linaro.org
| -rw-r--r-- | target/arm/tcg/sve.decode | 2 | ||||
| -rw-r--r-- | target/arm/tcg/translate-sve.c | 25 |
2 files changed, 18 insertions, 9 deletions
diff --git a/target/arm/tcg/sve.decode b/target/arm/tcg/sve.decode index a76f223..a77b725 100644 --- a/target/arm/tcg/sve.decode +++ b/target/arm/tcg/sve.decode @@ -1052,9 +1052,11 @@ FCMLA_zzxz 01100100 11 1 index:1 rm:4 0001 rot:2 rn:5 rd:5 \ ### SVE FP Multiply-Add Indexed Group # SVE floating-point multiply-add (indexed) +FMLA_zzxz 01100100 0. 1 ..... 000010 ..... ..... @rrxr_3 esz=0 FMLA_zzxz 01100100 0. 1 ..... 000000 ..... ..... @rrxr_3 esz=1 FMLA_zzxz 01100100 10 1 ..... 000000 ..... ..... @rrxr_2 esz=2 FMLA_zzxz 01100100 11 1 ..... 000000 ..... ..... @rrxr_1 esz=3 +FMLS_zzxz 01100100 0. 1 ..... 000011 ..... ..... @rrxr_3 esz=0 FMLS_zzxz 01100100 0. 1 ..... 000001 ..... ..... @rrxr_3 esz=1 FMLS_zzxz 01100100 10 1 ..... 000001 ..... ..... @rrxr_2 esz=2 FMLS_zzxz 01100100 11 1 ..... 000001 ..... ..... @rrxr_1 esz=3 diff --git a/target/arm/tcg/translate-sve.c b/target/arm/tcg/translate-sve.c index 37ecbc2..fc76624 100644 --- a/target/arm/tcg/translate-sve.c +++ b/target/arm/tcg/translate-sve.c @@ -3883,24 +3883,31 @@ DO_SVE2_RRXR_ROT(CDOT_zzxw_d, gen_helper_sve2_cdot_idx_d) *** SVE Floating Point Multiply-Add Indexed Group */ +static bool do_fmla_zzxz(DisasContext *s, arg_rrxr_esz *a, + gen_helper_gvec_4_ptr *fn) +{ + /* These insns use MO_8 to encode BFloat16 */ + if (a->esz == MO_8 && !dc_isar_feature(aa64_sve_b16b16, s)) { + return false; + } + return gen_gvec_fpst_zzzz(s, fn, a->rd, a->rn, a->rm, a->ra, a->index, + a->esz == MO_16 ? FPST_A64_F16 : FPST_A64); +} + static gen_helper_gvec_4_ptr * const fmla_idx_fns[4] = { - NULL, gen_helper_gvec_fmla_idx_h, + gen_helper_gvec_bfmla_idx, gen_helper_gvec_fmla_idx_h, gen_helper_gvec_fmla_idx_s, gen_helper_gvec_fmla_idx_d }; -TRANS_FEAT(FMLA_zzxz, aa64_sve, gen_gvec_fpst_zzzz, - fmla_idx_fns[a->esz], a->rd, a->rn, a->rm, a->ra, a->index, - a->esz == MO_16 ? FPST_A64_F16 : FPST_A64) +TRANS_FEAT(FMLA_zzxz, aa64_sve, do_fmla_zzxz, a, fmla_idx_fns[a->esz]) static gen_helper_gvec_4_ptr * const fmls_idx_fns[4][2] = { - { NULL, NULL }, + { gen_helper_gvec_bfmls_idx, gen_helper_gvec_ah_bfmls_idx }, { gen_helper_gvec_fmls_idx_h, gen_helper_gvec_ah_fmls_idx_h }, { gen_helper_gvec_fmls_idx_s, gen_helper_gvec_ah_fmls_idx_s }, { gen_helper_gvec_fmls_idx_d, gen_helper_gvec_ah_fmls_idx_d }, }; -TRANS_FEAT(FMLS_zzxz, aa64_sve, gen_gvec_fpst_zzzz, - fmls_idx_fns[a->esz][s->fpcr_ah], - a->rd, a->rn, a->rm, a->ra, a->index, - a->esz == MO_16 ? FPST_A64_F16 : FPST_A64) +TRANS_FEAT(FMLS_zzxz, aa64_sve, do_fmla_zzxz, a, + fmls_idx_fns[a->esz][s->fpcr_ah]) /* *** SVE Floating Point Multiply Indexed Group |