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[174.21.81.121]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-20710f35d79sm35753305ad.288.2024.09.09.09.22.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Sep 2024 09:22:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1725898973; x=1726503773; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=y+M/vrV0uMNpf4dh4yRfZZht1RPv8tvP+7CoYBlpT8w=; b=WVbYQpt2b/eegLvSda2+OmntjeTH9hH5loPiGq4MPcpSpKk0lQtbqaDsQY1Mmx1IIx MJqcvzZ6nmSlB5vNWcmgao+6M2OtueDLJ2UdMpIR+dMW44TXWctcei1NMM1pqvD4DKZz 65arqA51i+wabCrbz1f2TJI+MByvXqILf77G2TbaOZ1Dr+HtkIO2/VLjqei95Rd6jise QAu7D80WTeA+CT1iOdUWlWO4ZH9lROEmJOPyiG2BdYLtXw+/tw6ic2zcR7tIyiE6Cqec LJiII5iP7qcYoMI+oIu6uP92XvLW4dcJPckibqk9hLlXKIFxSoh9eH6CqVljK5GdU3L3 X26Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725898973; x=1726503773; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=y+M/vrV0uMNpf4dh4yRfZZht1RPv8tvP+7CoYBlpT8w=; b=OcE38KC2/4bZPChCcv+/SbeRmPZ5w5CU5NHDjdrEMOWgvfM+GFMaSkxttt0/V5Ws+G ZM4Yhop+2qLmQsPu4felZ2gGcoRtXyRAnJiuwpKzr/OngTph66GnVsd/Tf83CjGwl+RG n2VRvWJvCzeyg9lSpRiA/SrR93niR8DNQu6ebu5kNztrK536+mO30WKUrrxuHFXwafC3 zV6vV66zNDCdBUeyrix80ywRoBvCJn2AzFoyeo1h2SB/OSk44qkd5f6+Q05ptxr+NbMg MLgv4ddAUnrwTCKS9lIsT26h966z+zkmH1+dQh1KRvKkMhFYylbOtxVLPGOMUk7ANJeX EfRA== X-Gm-Message-State: AOJu0YxXM06zoFHpbGNnzxldThO3eUFjKgL1k2qTJjAx3zVeqH57IVp/ V/G4v1smAksvkjvWDNTu+aiZ8aASAdSDlb3SJZ7i+rXOK29dNtxGiFO2a+hQfhiZMR5J7d/Lh5b B X-Google-Smtp-Source: AGHT+IG/ioTDXES/chpGQITLihErS8wir2cjtgf4sdyT03Mx/obeakITzg2NJjPvTPUGFhrWm/D9Rw== X-Received: by 2002:a17:903:2347:b0:206:b04e:71b3 with SMTP id d9443c01a7336-206f0622d25mr166475975ad.51.1725898972619; Mon, 09 Sep 2024 09:22:52 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, Peter Maydell Subject: [PATCH v2 11/29] target/arm: Convert FMAXNMV, FMINNMV, FMAXV, FMINV to decodetree Date: Mon, 9 Sep 2024 09:22:21 -0700 Message-ID: <20240909162240.647173-12-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240909162240.647173-1-richard.henderson@linaro.org> References: <20240909162240.647173-1-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=2607:f8b0:4864:20::62d; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62d.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=unavailable 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: 1725899144791116600 Content-Type: text/plain; charset="utf-8" Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- target/arm/tcg/translate-a64.c | 176 ++++++++++----------------------- target/arm/tcg/a64.decode | 14 +++ 2 files changed, 67 insertions(+), 123 deletions(-) diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index 593a1774d8..aec2f6a542 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -6835,6 +6835,59 @@ TRANS(UMAXV, do_int_reduction, a, false, 0, tcg_gen_= umax_i64) TRANS(SMINV, do_int_reduction, a, false, MO_SIGN, tcg_gen_smin_i64) TRANS(UMINV, do_int_reduction, a, false, 0, tcg_gen_umin_i64) =20 +/* + * do_fp_reduction helper + * + * This mirrors the Reduce() pseudocode in the ARM ARM. It is + * important for correct NaN propagation that we do these + * operations in exactly the order specified by the pseudocode. + * + * This is a recursive function. + */ +static TCGv_i32 do_reduction_op(DisasContext *s, int rn, MemOp esz, + int ebase, int ecount, TCGv_ptr fpst, + NeonGenTwoSingleOpFn *fn) +{ + if (ecount =3D=3D 1) { + TCGv_i32 tcg_elem =3D tcg_temp_new_i32(); + read_vec_element_i32(s, tcg_elem, rn, ebase, esz); + return tcg_elem; + } else { + int half =3D ecount >> 1; + TCGv_i32 tcg_hi, tcg_lo, tcg_res; + + tcg_hi =3D do_reduction_op(s, rn, esz, ebase + half, half, fpst, f= n); + tcg_lo =3D do_reduction_op(s, rn, esz, ebase, half, fpst, fn); + tcg_res =3D tcg_temp_new_i32(); + + fn(tcg_res, tcg_lo, tcg_hi, fpst); + return tcg_res; + } +} + +static bool do_fp_reduction(DisasContext *s, arg_qrr_e *a, + NeonGenTwoSingleOpFn *fn) +{ + if (fp_access_check(s)) { + MemOp esz =3D a->esz; + int elts =3D (a->q ? 16 : 8) >> esz; + TCGv_ptr fpst =3D fpstatus_ptr(esz =3D=3D MO_16 ? FPST_FPCR_F16 : = FPST_FPCR); + TCGv_i32 res =3D do_reduction_op(s, a->rn, esz, 0, elts, fpst, fn); + write_fp_sreg(s, a->rd, res); + } + return true; +} + +TRANS_FEAT(FMAXNMV_h, aa64_fp16, do_fp_reduction, a, gen_helper_advsimd_ma= xnumh) +TRANS_FEAT(FMINNMV_h, aa64_fp16, do_fp_reduction, a, gen_helper_advsimd_mi= nnumh) +TRANS_FEAT(FMAXV_h, aa64_fp16, do_fp_reduction, a, gen_helper_advsimd_maxh) +TRANS_FEAT(FMINV_h, aa64_fp16, do_fp_reduction, a, gen_helper_advsimd_minh) + +TRANS(FMAXNMV_s, do_fp_reduction, a, gen_helper_vfp_maxnums) +TRANS(FMINNMV_s, do_fp_reduction, a, gen_helper_vfp_minnums) +TRANS(FMAXV_s, do_fp_reduction, a, gen_helper_vfp_maxs) +TRANS(FMINV_s, do_fp_reduction, a, gen_helper_vfp_mins) + /* Shift a TCGv src by TCGv shift_amount, put result in dst. * Note that it is the caller's responsibility to ensure that the * shift amount is in range (ie 0..31 or 0..63) and provide the ARM @@ -9061,128 +9114,6 @@ static void disas_data_proc_fp(DisasContext *s, uin= t32_t insn) } } =20 -/* - * do_reduction_op helper - * - * This mirrors the Reduce() pseudocode in the ARM ARM. It is - * important for correct NaN propagation that we do these - * operations in exactly the order specified by the pseudocode. - * - * This is a recursive function. - */ -static TCGv_i32 do_reduction_op(DisasContext *s, int fpopcode, int rn, - MemOp esz, int ebase, int ecount, TCGv_ptr= fpst) -{ - if (ecount =3D=3D 1) { - TCGv_i32 tcg_elem =3D tcg_temp_new_i32(); - read_vec_element_i32(s, tcg_elem, rn, ebase, esz); - return tcg_elem; - } else { - int half =3D ecount >> 1; - TCGv_i32 tcg_hi, tcg_lo, tcg_res; - - tcg_hi =3D do_reduction_op(s, fpopcode, rn, esz, - ebase + half, half, fpst); - tcg_lo =3D do_reduction_op(s, fpopcode, rn, esz, - ebase, half, fpst); - tcg_res =3D tcg_temp_new_i32(); - - switch (fpopcode) { - case 0x0c: /* fmaxnmv half-precision */ - gen_helper_advsimd_maxnumh(tcg_res, tcg_lo, tcg_hi, fpst); - break; - case 0x0f: /* fmaxv half-precision */ - gen_helper_advsimd_maxh(tcg_res, tcg_lo, tcg_hi, fpst); - break; - case 0x1c: /* fminnmv half-precision */ - gen_helper_advsimd_minnumh(tcg_res, tcg_lo, tcg_hi, fpst); - break; - case 0x1f: /* fminv half-precision */ - gen_helper_advsimd_minh(tcg_res, tcg_lo, tcg_hi, fpst); - break; - case 0x2c: /* fmaxnmv */ - gen_helper_vfp_maxnums(tcg_res, tcg_lo, tcg_hi, fpst); - break; - case 0x2f: /* fmaxv */ - gen_helper_vfp_maxs(tcg_res, tcg_lo, tcg_hi, fpst); - break; - case 0x3c: /* fminnmv */ - gen_helper_vfp_minnums(tcg_res, tcg_lo, tcg_hi, fpst); - break; - case 0x3f: /* fminv */ - gen_helper_vfp_mins(tcg_res, tcg_lo, tcg_hi, fpst); - break; - default: - g_assert_not_reached(); - } - return tcg_res; - } -} - -/* AdvSIMD across lanes - * 31 30 29 28 24 23 22 21 17 16 12 11 10 9 5 4 0 - * +---+---+---+-----------+------+-----------+--------+-----+------+-----= -+ - * | 0 | Q | U | 0 1 1 1 0 | size | 1 1 0 0 0 | opcode | 1 0 | Rn | Rd = | - * +---+---+---+-----------+------+-----------+--------+-----+------+-----= -+ - */ -static void disas_simd_across_lanes(DisasContext *s, uint32_t insn) -{ - int rd =3D extract32(insn, 0, 5); - int rn =3D extract32(insn, 5, 5); - int size =3D extract32(insn, 22, 2); - int opcode =3D extract32(insn, 12, 5); - bool is_q =3D extract32(insn, 30, 1); - bool is_u =3D extract32(insn, 29, 1); - bool is_min =3D false; - int elements; - - switch (opcode) { - case 0xc: /* FMAXNMV, FMINNMV */ - case 0xf: /* FMAXV, FMINV */ - /* Bit 1 of size field encodes min vs max and the actual size - * depends on the encoding of the U bit. If not set (and FP16 - * enabled) then we do half-precision float instead of single - * precision. - */ - is_min =3D extract32(size, 1, 1); - if (!is_u && dc_isar_feature(aa64_fp16, s)) { - size =3D 1; - } else if (!is_u || !is_q || extract32(size, 0, 1)) { - unallocated_encoding(s); - return; - } else { - size =3D 2; - } - break; - default: - case 0x3: /* SADDLV, UADDLV */ - case 0xa: /* SMAXV, UMAXV */ - case 0x1a: /* SMINV, UMINV */ - case 0x1b: /* ADDV */ - unallocated_encoding(s); - return; - } - - if (!fp_access_check(s)) { - return; - } - - elements =3D (is_q ? 16 : 8) >> size; - - { - /* Floating point vector reduction ops which work across 32 - * bit (single) or 16 bit (half-precision) intermediates. - * Note that correct NaN propagation requires that we do these - * operations in exactly the order specified by the pseudocode. - */ - TCGv_ptr fpst =3D fpstatus_ptr(size =3D=3D MO_16 ? FPST_FPCR_F16 := FPST_FPCR); - int fpopcode =3D opcode | is_min << 4 | is_u << 5; - TCGv_i32 tcg_res =3D do_reduction_op(s, fpopcode, rn, size, - 0, elements, fpst); - write_fp_sreg(s, rd, tcg_res); - } -} - /* AdvSIMD modified immediate * 31 30 29 28 19 18 16 15 12 11 10 9 5 4 = 0 * +---+---+----+---------------------+-----+-------+----+---+-------+----= --+ @@ -11735,7 +11666,6 @@ static void disas_simd_two_reg_misc_fp16(DisasConte= xt *s, uint32_t insn) static const AArch64DecodeTable data_proc_simd[] =3D { /* pattern , mask , fn */ { 0x0e200800, 0x9f3e0c00, disas_simd_two_reg_misc }, - { 0x0e300800, 0x9f3e0c00, disas_simd_across_lanes }, /* simd_mod_imm decode is a subset of simd_shift_imm, so must precede = it */ { 0x0f000400, 0x9ff80400, disas_simd_mod_imm }, { 0x0f000400, 0x9f800400, disas_simd_shift_imm }, diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode index 5ab4b11781..c77f9fc987 100644 --- a/target/arm/tcg/a64.decode +++ b/target/arm/tcg/a64.decode @@ -54,11 +54,13 @@ @rrx_d ........ .. . rm:5 .... idx:1 . rn:5 rd:5 &rrx_e esz=3D3 =20 @rr_q1e0 ........ ........ ...... rn:5 rd:5 &qrr_e q=3D1 esz= =3D0 +@rr_q1e2 ........ ........ ...... rn:5 rd:5 &qrr_e q=3D1 esz= =3D2 @r2r_q1e0 ........ ........ ...... rm:5 rd:5 &qrrr_e rn=3D%rd q= =3D1 esz=3D0 @rrr_q1e0 ........ ... rm:5 ...... rn:5 rd:5 &qrrr_e q=3D1 esz= =3D0 @rrr_q1e3 ........ ... rm:5 ...... rn:5 rd:5 &qrrr_e q=3D1 esz= =3D3 @rrrr_q1e3 ........ ... rm:5 . ra:5 rn:5 rd:5 &qrrrr_e q=3D1 esz= =3D3 =20 +@qrr_h . q:1 ...... .. ...... ...... rn:5 rd:5 &qrr_e esz=3D1 @qrr_e . q:1 ...... esz:2 ...... ...... rn:5 rd:5 &qrr_e =20 @qrrr_b . q:1 ...... ... rm:5 ...... rn:5 rd:5 &qrrr_e esz=3D0 @@ -1166,3 +1168,15 @@ SMAXV 0.00 1110 .. 11000 01010 10 ..... ..= ... @qrr_e UMAXV 0.10 1110 .. 11000 01010 10 ..... ..... @qrr_e SMINV 0.00 1110 .. 11000 11010 10 ..... ..... @qrr_e UMINV 0.10 1110 .. 11000 11010 10 ..... ..... @qrr_e + +FMAXNMV_h 0.00 1110 00 11000 01100 10 ..... ..... @qrr_h +FMAXNMV_s 0110 1110 00 11000 01100 10 ..... ..... @rr_q1e2 + +FMINNMV_h 0.00 1110 10 11000 01100 10 ..... ..... @qrr_h +FMINNMV_s 0110 1110 10 11000 01100 10 ..... ..... @rr_q1e2 + +FMAXV_h 0.00 1110 00 11000 01111 10 ..... ..... @qrr_h +FMAXV_s 0110 1110 00 11000 01111 10 ..... ..... @rr_q1e2 + +FMINV_h 0.00 1110 10 11000 01111 10 ..... ..... @qrr_h +FMINV_s 0110 1110 10 11000 01111 10 ..... ..... @rr_q1e2 --=20 2.43.0