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Wed, 02 Jul 2025 05:34:38 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, peter.maydell@linaro.org Subject: [PATCH v3 20/97] target/arm: Implement SME2 Multiple and Single SVE Destructive Date: Wed, 2 Jul 2025 06:32:53 -0600 Message-ID: <20250702123410.761208-21-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250702123410.761208-1-richard.henderson@linaro.org> References: <20250702123410.761208-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:4860:4864:20::34; envelope-from=richard.henderson@linaro.org; helo=mail-oa1-x34.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1751460095083116600 Content-Type: text/plain; charset="utf-8" Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- target/arm/tcg/helper-sme.h | 13 ++++ target/arm/tcg/helper.h | 8 ++ target/arm/tcg/vec_internal.h | 4 + target/arm/tcg/helper-a64.c | 2 + target/arm/tcg/neon_helper.c | 30 ++++++++ target/arm/tcg/translate-sme.c | 137 +++++++++++++++++++++++++++++++++ target/arm/tcg/vec_helper.c | 7 ++ target/arm/tcg/sme.decode | 40 ++++++++++ 8 files changed, 241 insertions(+) diff --git a/target/arm/tcg/helper-sme.h b/target/arm/tcg/helper-sme.h index ecd06f2cd1..cdd7058aed 100644 --- a/target/arm/tcg/helper-sme.h +++ b/target/arm/tcg/helper-sme.h @@ -160,3 +160,16 @@ DEF_HELPER_FLAGS_6(sme2_smopa2_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, ptr, i32) DEF_HELPER_FLAGS_6(sme2_umopa2_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, ptr, i32) + +DEF_HELPER_FLAGS_5(gvec_fmax_b16, TCG_CALL_NO_RWG, + void, ptr, ptr, ptr, fpst, i32) +DEF_HELPER_FLAGS_5(gvec_fmin_b16, TCG_CALL_NO_RWG, + void, ptr, ptr, ptr, fpst, i32) +DEF_HELPER_FLAGS_5(gvec_ah_fmax_b16, TCG_CALL_NO_RWG, + void, ptr, ptr, ptr, fpst, i32) +DEF_HELPER_FLAGS_5(gvec_ah_fmin_b16, TCG_CALL_NO_RWG, + void, ptr, ptr, ptr, fpst, i32) +DEF_HELPER_FLAGS_5(gvec_fmaxnum_b16, TCG_CALL_NO_RWG, + void, ptr, ptr, ptr, fpst, i32) +DEF_HELPER_FLAGS_5(gvec_fminnum_b16, TCG_CALL_NO_RWG, + void, ptr, ptr, ptr, fpst, i32) diff --git a/target/arm/tcg/helper.h b/target/arm/tcg/helper.h index 80db7c2c37..8c4705fc53 100644 --- a/target/arm/tcg/helper.h +++ b/target/arm/tcg/helper.h @@ -353,6 +353,14 @@ DEF_HELPER_FLAGS_4(gvec_urshl_h, TCG_CALL_NO_RWG, void= , ptr, ptr, ptr, i32) DEF_HELPER_FLAGS_4(gvec_urshl_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32) DEF_HELPER_FLAGS_4(gvec_urshl_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32) =20 +DEF_HELPER_FLAGS_4(sme2_srshl_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32) +DEF_HELPER_FLAGS_4(sme2_srshl_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32) +DEF_HELPER_FLAGS_4(sme2_srshl_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32) + +DEF_HELPER_FLAGS_4(sme2_urshl_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32) +DEF_HELPER_FLAGS_4(sme2_urshl_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32) +DEF_HELPER_FLAGS_4(sme2_urshl_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32) + DEF_HELPER_2(neon_add_u8, i32, i32, i32) DEF_HELPER_2(neon_add_u16, i32, i32, i32) DEF_HELPER_2(neon_sub_u8, i32, i32, i32) diff --git a/target/arm/tcg/vec_internal.h b/target/arm/tcg/vec_internal.h index c02f9c37f8..64a7249d01 100644 --- a/target/arm/tcg/vec_internal.h +++ b/target/arm/tcg/vec_internal.h @@ -302,4 +302,8 @@ static inline float64 float64_maybe_ah_chs(float64 a, b= ool fpcr_ah) return fpcr_ah && float64_is_any_nan(a) ? a : float64_chs(a); } =20 +/* Not actually called directly as a helper, but uses similar machinery. */ +bfloat16 helper_sme2_ah_fmax_b16(bfloat16 a, bfloat16 b, float_status *fps= t); +bfloat16 helper_sme2_ah_fmin_b16(bfloat16 a, bfloat16 b, float_status *fps= t); + #endif /* TARGET_ARM_VEC_INTERNAL_H */ diff --git a/target/arm/tcg/helper-a64.c b/target/arm/tcg/helper-a64.c index 4f618ae390..c66d521278 100644 --- a/target/arm/tcg/helper-a64.c +++ b/target/arm/tcg/helper-a64.c @@ -402,6 +402,8 @@ AH_MINMAX_HELPER(vfp_ah_mind, float64, float64, min) AH_MINMAX_HELPER(vfp_ah_maxh, dh_ctype_f16, float16, max) AH_MINMAX_HELPER(vfp_ah_maxs, float32, float32, max) AH_MINMAX_HELPER(vfp_ah_maxd, float64, float64, max) +AH_MINMAX_HELPER(sme2_ah_fmax_b16, bfloat16, bfloat16, max) +AH_MINMAX_HELPER(sme2_ah_fmin_b16, bfloat16, bfloat16, min) =20 /* 64-bit versions of the CRC helpers. Note that although the operation * (and the prototypes of crc32c() and crc32() mean that only the bottom diff --git a/target/arm/tcg/neon_helper.c b/target/arm/tcg/neon_helper.c index 2cc8241f1e..8d288f3a70 100644 --- a/target/arm/tcg/neon_helper.c +++ b/target/arm/tcg/neon_helper.c @@ -228,16 +228,31 @@ NEON_VOP(rshl_s16, neon_s16, 2) NEON_GVEC_VOP2(gvec_srshl_h, int16_t) #undef NEON_FN =20 +#define NEON_FN(dest, src1, src2) \ + (dest =3D do_sqrshl_bhs(src1, src2, 16, true, NULL)) +NEON_GVEC_VOP2(sme2_srshl_h, int16_t) +#undef NEON_FN + #define NEON_FN(dest, src1, src2) \ (dest =3D do_sqrshl_bhs(src1, (int8_t)src2, 32, true, NULL)) NEON_GVEC_VOP2(gvec_srshl_s, int32_t) #undef NEON_FN =20 +#define NEON_FN(dest, src1, src2) \ + (dest =3D do_sqrshl_bhs(src1, src2, 32, true, NULL)) +NEON_GVEC_VOP2(sme2_srshl_s, int32_t) +#undef NEON_FN + #define NEON_FN(dest, src1, src2) \ (dest =3D do_sqrshl_d(src1, (int8_t)src2, true, NULL)) NEON_GVEC_VOP2(gvec_srshl_d, int64_t) #undef NEON_FN =20 +#define NEON_FN(dest, src1, src2) \ + (dest =3D do_sqrshl_d(src1, src2, true, NULL)) +NEON_GVEC_VOP2(sme2_srshl_d, int64_t) +#undef NEON_FN + uint32_t HELPER(neon_rshl_s32)(uint32_t val, uint32_t shift) { return do_sqrshl_bhs(val, (int8_t)shift, 32, true, NULL); @@ -260,16 +275,31 @@ NEON_VOP(rshl_u16, neon_u16, 2) NEON_GVEC_VOP2(gvec_urshl_h, uint16_t) #undef NEON_FN =20 +#define NEON_FN(dest, src1, src2) \ + (dest =3D do_uqrshl_bhs(src1, (int16_t)src2, 16, true, NULL)) +NEON_GVEC_VOP2(sme2_urshl_h, uint16_t) +#undef NEON_FN + #define NEON_FN(dest, src1, src2) \ (dest =3D do_uqrshl_bhs(src1, (int8_t)src2, 32, true, NULL)) NEON_GVEC_VOP2(gvec_urshl_s, int32_t) #undef NEON_FN =20 +#define NEON_FN(dest, src1, src2) \ + (dest =3D do_uqrshl_bhs(src1, src2, 32, true, NULL)) +NEON_GVEC_VOP2(sme2_urshl_s, int32_t) +#undef NEON_FN + #define NEON_FN(dest, src1, src2) \ (dest =3D do_uqrshl_d(src1, (int8_t)src2, true, NULL)) NEON_GVEC_VOP2(gvec_urshl_d, int64_t) #undef NEON_FN =20 +#define NEON_FN(dest, src1, src2) \ + (dest =3D do_uqrshl_d(src1, src2, true, NULL)) +NEON_GVEC_VOP2(sme2_urshl_d, int64_t) +#undef NEON_FN + uint32_t HELPER(neon_rshl_u32)(uint32_t val, uint32_t shift) { return do_uqrshl_bhs(val, (int8_t)shift, 32, true, NULL); diff --git a/target/arm/tcg/translate-sme.c b/target/arm/tcg/translate-sme.c index 0a863a50bf..954da18ff0 100644 --- a/target/arm/tcg/translate-sme.c +++ b/target/arm/tcg/translate-sme.c @@ -543,3 +543,140 @@ TRANS_FEAT(USMOPA_d, aa64_sme_i16i64, do_outprod, a, = MO_64, gen_helper_sme_usmop TRANS_FEAT(BMOPA, aa64_sme2, do_outprod, a, MO_32, gen_helper_sme2_bmopa_s) TRANS_FEAT(SMOPA2_s, aa64_sme2, do_outprod, a, MO_32, gen_helper_sme2_smop= a2_s) TRANS_FEAT(UMOPA2_s, aa64_sme2, do_outprod, a, MO_32, gen_helper_sme2_umop= a2_s) + +static bool do_z2z_n1(DisasContext *s, arg_z2z_en *a, GVecGen3Fn *fn) +{ + int esz, dn, vsz, mofs, n; + bool overlap =3D false; + + if (!sme_sm_enabled_check(s)) { + return true; + } + + esz =3D a->esz; + n =3D a->n; + dn =3D a->zdn; + mofs =3D vec_full_reg_offset(s, a->zm); + vsz =3D streaming_vec_reg_size(s); + + for (int i =3D 0; i < n; i++) { + int dofs =3D vec_full_reg_offset(s, dn + i); + if (dofs =3D=3D mofs) { + overlap =3D true; + } else { + fn(esz, dofs, dofs, mofs, vsz, vsz); + } + } + if (overlap) { + fn(esz, mofs, mofs, mofs, vsz, vsz); + } + return true; +} + +static void gen_sme2_srshl(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, + uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_= sz) +{ + static gen_helper_gvec_3 * const fns[] =3D { + gen_helper_gvec_srshl_b, gen_helper_sme2_srshl_h, + gen_helper_sme2_srshl_s, gen_helper_sme2_srshl_d, + }; + tcg_debug_assert(vece <=3D MO_64); + tcg_gen_gvec_3_ool(rd_ofs, rn_ofs, rm_ofs, opr_sz, max_sz, 0, fns[vece= ]); +} + +static void gen_sme2_urshl(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, + uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_= sz) +{ + static gen_helper_gvec_3 * const fns[] =3D { + gen_helper_gvec_urshl_b, gen_helper_sme2_urshl_h, + gen_helper_sme2_urshl_s, gen_helper_sme2_urshl_d, + }; + tcg_debug_assert(vece <=3D MO_64); + tcg_gen_gvec_3_ool(rd_ofs, rn_ofs, rm_ofs, opr_sz, max_sz, 0, fns[vece= ]); +} + +TRANS_FEAT(ADD_n1, aa64_sme2, do_z2z_n1, a, tcg_gen_gvec_add) +TRANS_FEAT(SMAX_n1, aa64_sme2, do_z2z_n1, a, tcg_gen_gvec_smax) +TRANS_FEAT(SMIN_n1, aa64_sme2, do_z2z_n1, a, tcg_gen_gvec_smin) +TRANS_FEAT(UMAX_n1, aa64_sme2, do_z2z_n1, a, tcg_gen_gvec_umax) +TRANS_FEAT(UMIN_n1, aa64_sme2, do_z2z_n1, a, tcg_gen_gvec_umin) +TRANS_FEAT(SRSHL_n1, aa64_sme2, do_z2z_n1, a, gen_sme2_srshl) +TRANS_FEAT(URSHL_n1, aa64_sme2, do_z2z_n1, a, gen_sme2_urshl) +TRANS_FEAT(SQDMULH_n1, aa64_sme2, do_z2z_n1, a, gen_gvec_sve2_sqdmulh) + +static bool do_z2z_n1_fpst(DisasContext *s, arg_z2z_en *a, + gen_helper_gvec_3_ptr * const fns[4]) +{ + int esz =3D a->esz, n, dn, vsz, mofs; + bool overlap =3D false; + gen_helper_gvec_3_ptr *fn; + TCGv_ptr fpst; + + /* These insns use MO_8 to encode BFloat16. */ + if (esz =3D=3D MO_8 && !dc_isar_feature(aa64_sme_b16b16, s)) { + return false; + } + if (!sme_sm_enabled_check(s)) { + return true; + } + + fpst =3D fpstatus_ptr(esz =3D=3D MO_16 ? FPST_A64_F16 : FPST_A64); + fn =3D fns[esz]; + n =3D a->n; + dn =3D a->zdn; + mofs =3D vec_full_reg_offset(s, a->zm); + vsz =3D streaming_vec_reg_size(s); + + for (int i =3D 0; i < n; i++) { + int dofs =3D vec_full_reg_offset(s, dn + i); + if (dofs =3D=3D mofs) { + overlap =3D true; + } else { + tcg_gen_gvec_3_ptr(dofs, dofs, mofs, fpst, vsz, vsz, 0, fn); + } + } + if (overlap) { + tcg_gen_gvec_3_ptr(mofs, mofs, mofs, fpst, vsz, vsz, 0, fn); + } + return true; +} + +static gen_helper_gvec_3_ptr * const f_vector_fmax[2][4] =3D { + { gen_helper_gvec_fmax_b16, + gen_helper_gvec_fmax_h, + gen_helper_gvec_fmax_s, + gen_helper_gvec_fmax_d }, + { gen_helper_gvec_ah_fmax_b16, + gen_helper_gvec_ah_fmax_h, + gen_helper_gvec_ah_fmax_s, + gen_helper_gvec_ah_fmax_d }, +}; +TRANS_FEAT(FMAX_n1, aa64_sme2, do_z2z_n1_fpst, a, f_vector_fmax[s->fpcr_ah= ]) + +static gen_helper_gvec_3_ptr * const f_vector_fmin[2][4] =3D { + { gen_helper_gvec_fmin_b16, + gen_helper_gvec_fmin_h, + gen_helper_gvec_fmin_s, + gen_helper_gvec_fmin_d }, + { gen_helper_gvec_ah_fmin_b16, + gen_helper_gvec_ah_fmin_h, + gen_helper_gvec_ah_fmin_s, + gen_helper_gvec_ah_fmin_d }, +}; +TRANS_FEAT(FMIN_n1, aa64_sme2, do_z2z_n1_fpst, a, f_vector_fmin[s->fpcr_ah= ]) + +static gen_helper_gvec_3_ptr * const f_vector_fmaxnm[4] =3D { + gen_helper_gvec_fmaxnum_b16, + gen_helper_gvec_fmaxnum_h, + gen_helper_gvec_fmaxnum_s, + gen_helper_gvec_fmaxnum_d, +}; +TRANS_FEAT(FMAXNM_n1, aa64_sme2, do_z2z_n1_fpst, a, f_vector_fmaxnm) + +static gen_helper_gvec_3_ptr * const f_vector_fminnm[4] =3D { + gen_helper_gvec_fminnum_b16, + gen_helper_gvec_fminnum_h, + gen_helper_gvec_fminnum_s, + gen_helper_gvec_fminnum_d, +}; +TRANS_FEAT(FMINNM_n1, aa64_sme2, do_z2z_n1_fpst, a, f_vector_fminnm) diff --git a/target/arm/tcg/vec_helper.c b/target/arm/tcg/vec_helper.c index 21c6175d2e..40ce0cbc8b 100644 --- a/target/arm/tcg/vec_helper.c +++ b/target/arm/tcg/vec_helper.c @@ -1515,6 +1515,13 @@ DO_3OP(gvec_ah_fmin_h, helper_vfp_ah_minh, float16) DO_3OP(gvec_ah_fmin_s, helper_vfp_ah_mins, float32) DO_3OP(gvec_ah_fmin_d, helper_vfp_ah_mind, float64) =20 +DO_3OP(gvec_fmax_b16, bfloat16_max, bfloat16) +DO_3OP(gvec_fmin_b16, bfloat16_min, bfloat16) +DO_3OP(gvec_fmaxnum_b16, bfloat16_maxnum, bfloat16) +DO_3OP(gvec_fminnum_b16, bfloat16_minnum, bfloat16) +DO_3OP(gvec_ah_fmax_b16, helper_sme2_ah_fmax_b16, bfloat16) +DO_3OP(gvec_ah_fmin_b16, helper_sme2_ah_fmin_b16, bfloat16) + #endif #undef DO_3OP =20 diff --git a/target/arm/tcg/sme.decode b/target/arm/tcg/sme.decode index 36f369d02a..005f87777b 100644 --- a/target/arm/tcg/sme.decode +++ b/target/arm/tcg/sme.decode @@ -169,3 +169,43 @@ UMOPA_d 1010000 1 11 1 ..... ... ... ..... . 0= ... @op_64 BMOPA 1000000 0 10 0 ..... ... ... ..... . 10 .. @op_32 SMOPA2_s 1010000 0 10 0 ..... ... ... ..... . 10 .. @op_32 UMOPA2_s 1010000 1 10 0 ..... ... ... ..... . 10 .. @op_32 + +### SME2 Multi-vector Multiple and Single SVE Destructive + +%zd_ax2 1:4 !function=3Dtimes_2 +%zd_ax4 2:3 !function=3Dtimes_4 + +&z2z_en zdn zm esz n +@z2z_2x1 ....... . esz:2 .. zm:4 ....0. ..... .... . \ + &z2z_en n=3D2 zdn=3D%zd_ax2 +@z2z_4x1 ....... . esz:2 .. zm:4 ....1. ..... ...0 . \ + &z2z_en n=3D4 zdn=3D%zd_ax4 + +SMAX_n1 1100000 1 .. 10 .... 1010.0 00000 .... 0 @z2z_2x1 +SMAX_n1 1100000 1 .. 10 .... 1010.0 00000 .... 0 @z2z_4x1 +UMAX_n1 1100000 1 .. 10 .... 1010.0 00000 .... 1 @z2z_2x1 +UMAX_n1 1100000 1 .. 10 .... 1010.0 00000 .... 1 @z2z_4x1 +SMIN_n1 1100000 1 .. 10 .... 1010.0 00001 .... 0 @z2z_2x1 +SMIN_n1 1100000 1 .. 10 .... 1010.0 00001 .... 0 @z2z_4x1 +UMIN_n1 1100000 1 .. 10 .... 1010.0 00001 .... 1 @z2z_2x1 +UMIN_n1 1100000 1 .. 10 .... 1010.0 00001 .... 1 @z2z_4x1 + +FMAX_n1 1100000 1 .. 10 .... 1010.0 01000 .... 0 @z2z_2x1 +FMAX_n1 1100000 1 .. 10 .... 1010.0 01000 .... 0 @z2z_4x1 +FMIN_n1 1100000 1 .. 10 .... 1010.0 01000 .... 1 @z2z_2x1 +FMIN_n1 1100000 1 .. 10 .... 1010.0 01000 .... 1 @z2z_4x1 +FMAXNM_n1 1100000 1 .. 10 .... 1010.0 01001 .... 0 @z2z_2x1 +FMAXNM_n1 1100000 1 .. 10 .... 1010.0 01001 .... 0 @z2z_4x1 +FMINNM_n1 1100000 1 .. 10 .... 1010.0 01001 .... 1 @z2z_2x1 +FMINNM_n1 1100000 1 .. 10 .... 1010.0 01001 .... 1 @z2z_4x1 + +SRSHL_n1 1100000 1 .. 10 .... 1010.0 10001 .... 0 @z2z_2x1 +SRSHL_n1 1100000 1 .. 10 .... 1010.0 10001 .... 0 @z2z_4x1 +URSHL_n1 1100000 1 .. 10 .... 1010.0 10001 .... 1 @z2z_2x1 +URSHL_n1 1100000 1 .. 10 .... 1010.0 10001 .... 1 @z2z_4x1 + +ADD_n1 1100000 1 .. 10 .... 1010.0 11000 .... 0 @z2z_2x1 +ADD_n1 1100000 1 .. 10 .... 1010.0 11000 .... 0 @z2z_4x1 + +SQDMULH_n1 1100000 1 .. 10 .... 1010.1 00000 .... 0 @z2z_2x1 +SQDMULH_n1 1100000 1 .. 10 .... 1010.1 00000 .... 0 @z2z_4x1 --=20 2.43.0