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([187.217.227.247]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6d8da675214sm71856276d6.11.2024.12.11.08.37.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Dec 2024 08:37:03 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, Peter Maydell Subject: [PATCH v3 66/69] target/arm: Convert FRECPE, FRECPX, FRSQRTE to decodetree Date: Wed, 11 Dec 2024 10:30:33 -0600 Message-ID: <20241211163036.2297116-67-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241211163036.2297116-1-richard.henderson@linaro.org> References: <20241211163036.2297116-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::833; envelope-from=richard.henderson@linaro.org; helo=mail-qt1-x833.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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Remove disas_simd_scalar_two_reg_misc and disas_simd_two_reg_misc_fp16 as these were the last insns decoded by those functions. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- target/arm/tcg/translate-a64.c | 329 ++++----------------------------- target/arm/tcg/a64.decode | 15 ++ 2 files changed, 53 insertions(+), 291 deletions(-) diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index 1776862161..63cf25251b 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -8501,6 +8501,27 @@ TRANS_FEAT(FRINT64Z_s, aa64_frint, do_fp1_scalar, a, &f_scalar_frint64, FPROUNDING_ZERO) TRANS_FEAT(FRINT64X_s, aa64_frint, do_fp1_scalar, a, &f_scalar_frint64, -1) +static const FPScalar1 f_scalar_frecpe = { + gen_helper_recpe_f16, + gen_helper_recpe_f32, + gen_helper_recpe_f64, +}; +TRANS(FRECPE_s, do_fp1_scalar, a, &f_scalar_frecpe, -1) + +static const FPScalar1 f_scalar_frecpx = { + gen_helper_frecpx_f16, + gen_helper_frecpx_f32, + gen_helper_frecpx_f64, +}; +TRANS(FRECPX_s, do_fp1_scalar, a, &f_scalar_frecpx, -1) + +static const FPScalar1 f_scalar_frsqrte = { + gen_helper_rsqrte_f16, + gen_helper_rsqrte_f32, + gen_helper_rsqrte_f64, +}; +TRANS(FRSQRTE_s, do_fp1_scalar, a, &f_scalar_frsqrte, -1) + static bool trans_FCVT_s_ds(DisasContext *s, arg_rr *a) { if (fp_access_check(s)) { @@ -9471,36 +9492,28 @@ static gen_helper_gvec_2_ptr * const f_fcle0[] = { }; TRANS(FCMLE0_v, do_gvec_op2_fpst, a->esz, a->q, a->rd, a->rn, 0, f_fcle0) +static gen_helper_gvec_2_ptr * const f_frecpe[] = { + gen_helper_gvec_frecpe_h, + gen_helper_gvec_frecpe_s, + gen_helper_gvec_frecpe_d, +}; +TRANS(FRECPE_v, do_gvec_op2_fpst, a->esz, a->q, a->rd, a->rn, 0, f_frecpe) + +static gen_helper_gvec_2_ptr * const f_frsqrte[] = { + gen_helper_gvec_frsqrte_h, + gen_helper_gvec_frsqrte_s, + gen_helper_gvec_frsqrte_d, +}; +TRANS(FRSQRTE_v, do_gvec_op2_fpst, a->esz, a->q, a->rd, a->rn, 0, f_frsqrte) + static void handle_2misc_reciprocal(DisasContext *s, int opcode, bool is_scalar, bool is_u, bool is_q, int size, int rn, int rd) { bool is_double = (size == 3); - TCGv_ptr fpst = fpstatus_ptr(FPST_FPCR); if (is_double) { - TCGv_i64 tcg_op = tcg_temp_new_i64(); - TCGv_i64 tcg_res = tcg_temp_new_i64(); - int pass; - - for (pass = 0; pass < (is_scalar ? 1 : 2); pass++) { - read_vec_element(s, tcg_op, rn, pass, MO_64); - switch (opcode) { - case 0x3d: /* FRECPE */ - gen_helper_recpe_f64(tcg_res, tcg_op, fpst); - break; - case 0x3f: /* FRECPX */ - gen_helper_frecpx_f64(tcg_res, tcg_op, fpst); - break; - case 0x7d: /* FRSQRTE */ - gen_helper_rsqrte_f64(tcg_res, tcg_op, fpst); - break; - default: - g_assert_not_reached(); - } - write_vec_element(s, tcg_res, rd, pass, MO_64); - } - clear_vec_high(s, !is_scalar, rd); + g_assert_not_reached(); } else { TCGv_i32 tcg_op = tcg_temp_new_i32(); TCGv_i32 tcg_res = tcg_temp_new_i32(); @@ -9520,14 +9533,8 @@ static void handle_2misc_reciprocal(DisasContext *s, int opcode, gen_helper_recpe_u32(tcg_res, tcg_op); break; case 0x3d: /* FRECPE */ - gen_helper_recpe_f32(tcg_res, tcg_op, fpst); - break; case 0x3f: /* FRECPX */ - gen_helper_frecpx_f32(tcg_res, tcg_op, fpst); - break; case 0x7d: /* FRSQRTE */ - gen_helper_rsqrte_f32(tcg_res, tcg_op, fpst); - break; default: g_assert_not_reached(); } @@ -9544,76 +9551,6 @@ static void handle_2misc_reciprocal(DisasContext *s, int opcode, } } -/* AdvSIMD scalar two reg misc - * 31 30 29 28 24 23 22 21 17 16 12 11 10 9 5 4 0 - * +-----+---+-----------+------+-----------+--------+-----+------+------+ - * | 0 1 | U | 1 1 1 1 0 | size | 1 0 0 0 0 | opcode | 1 0 | Rn | Rd | - * +-----+---+-----------+------+-----------+--------+-----+------+------+ - */ -static void disas_simd_scalar_two_reg_misc(DisasContext *s, uint32_t insn) -{ - int rd = extract32(insn, 0, 5); - int rn = extract32(insn, 5, 5); - int opcode = extract32(insn, 12, 5); - int size = extract32(insn, 22, 2); - bool u = extract32(insn, 29, 1); - - switch (opcode) { - case 0xc ... 0xf: - case 0x16 ... 0x1d: - case 0x1f: - /* Floating point: U, size[1] and opcode indicate operation; - * size[0] indicates single or double precision. - */ - opcode |= (extract32(size, 1, 1) << 5) | (u << 6); - size = extract32(size, 0, 1) ? 3 : 2; - switch (opcode) { - case 0x3d: /* FRECPE */ - case 0x3f: /* FRECPX */ - case 0x7d: /* FRSQRTE */ - if (!fp_access_check(s)) { - return; - } - handle_2misc_reciprocal(s, opcode, true, u, true, size, rn, rd); - return; - case 0x1a: /* FCVTNS */ - case 0x1b: /* FCVTMS */ - case 0x3a: /* FCVTPS */ - case 0x3b: /* FCVTZS */ - case 0x5a: /* FCVTNU */ - case 0x5b: /* FCVTMU */ - case 0x7a: /* FCVTPU */ - case 0x7b: /* FCVTZU */ - case 0x1c: /* FCVTAS */ - case 0x5c: /* FCVTAU */ - case 0x56: /* FCVTXN, FCVTXN2 */ - case 0x1d: /* SCVTF */ - case 0x5d: /* UCVTF */ - case 0x2c: /* FCMGT (zero) */ - case 0x2d: /* FCMEQ (zero) */ - case 0x2e: /* FCMLT (zero) */ - case 0x6c: /* FCMGE (zero) */ - case 0x6d: /* FCMLE (zero) */ - default: - unallocated_encoding(s); - return; - } - break; - default: - case 0x3: /* USQADD / SUQADD */ - case 0x7: /* SQABS / SQNEG */ - case 0x8: /* CMGT, CMGE */ - case 0x9: /* CMEQ, CMLE */ - case 0xa: /* CMLT */ - case 0xb: /* ABS, NEG */ - case 0x12: /* SQXTUN */ - case 0x14: /* SQXTN, UQXTN */ - unallocated_encoding(s); - return; - } - g_assert_not_reached(); -} - static void handle_2misc_widening(DisasContext *s, int opcode, bool is_q, int size, int rn, int rd) { @@ -9693,13 +9630,6 @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn) unallocated_encoding(s); return; } - /* fall through */ - case 0x3d: /* FRECPE */ - case 0x7d: /* FRSQRTE */ - if (size == 3 && !is_q) { - unallocated_encoding(s); - return; - } if (!fp_access_check(s)) { return; } @@ -9752,6 +9682,8 @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn) case 0x2e: /* FCMLT (zero) */ case 0x6c: /* FCMGE (zero) */ case 0x6d: /* FCMLE (zero) */ + case 0x3d: /* FRECPE */ + case 0x7d: /* FRSQRTE */ unallocated_encoding(s); return; } @@ -9847,189 +9779,6 @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn) } } -/* AdvSIMD [scalar] two register miscellaneous (FP16) - * - * 31 30 29 28 27 24 23 22 21 17 16 12 11 10 9 5 4 0 - * +---+---+---+---+---------+---+-------------+--------+-----+------+------+ - * | 0 | Q | U | S | 1 1 1 0 | a | 1 1 1 1 0 0 | opcode | 1 0 | Rn | Rd | - * +---+---+---+---+---------+---+-------------+--------+-----+------+------+ - * mask: 1000 1111 0111 1110 0000 1100 0000 0000 0x8f7e 0c00 - * val: 0000 1110 0111 1000 0000 1000 0000 0000 0x0e78 0800 - * - * This actually covers two groups where scalar access is governed by - * bit 28. A bunch of the instructions (float to integral) only exist - * in the vector form and are un-allocated for the scalar decode. Also - * in the scalar decode Q is always 1. - */ -static void disas_simd_two_reg_misc_fp16(DisasContext *s, uint32_t insn) -{ - int fpop, opcode, a, u; - int rn, rd; - bool is_q; - bool is_scalar; - - int pass; - TCGv_i32 tcg_rmode = NULL; - TCGv_ptr tcg_fpstatus = NULL; - bool need_fpst = true; - int rmode = -1; - - if (!dc_isar_feature(aa64_fp16, s)) { - unallocated_encoding(s); - return; - } - - rd = extract32(insn, 0, 5); - rn = extract32(insn, 5, 5); - - a = extract32(insn, 23, 1); - u = extract32(insn, 29, 1); - is_scalar = extract32(insn, 28, 1); - is_q = extract32(insn, 30, 1); - - opcode = extract32(insn, 12, 5); - fpop = deposit32(opcode, 5, 1, a); - fpop = deposit32(fpop, 6, 1, u); - - switch (fpop) { - case 0x3d: /* FRECPE */ - case 0x3f: /* FRECPX */ - break; - case 0x7d: /* FRSQRTE */ - break; - default: - case 0x2f: /* FABS */ - case 0x6f: /* FNEG */ - case 0x7f: /* FSQRT (vector) */ - case 0x18: /* FRINTN */ - case 0x19: /* FRINTM */ - case 0x38: /* FRINTP */ - case 0x39: /* FRINTZ */ - case 0x58: /* FRINTA */ - case 0x59: /* FRINTX */ - case 0x79: /* FRINTI */ - case 0x1d: /* SCVTF */ - case 0x5d: /* UCVTF */ - case 0x1a: /* FCVTNS */ - case 0x1b: /* FCVTMS */ - case 0x1c: /* FCVTAS */ - case 0x3a: /* FCVTPS */ - case 0x3b: /* FCVTZS */ - case 0x5a: /* FCVTNU */ - case 0x5b: /* FCVTMU */ - case 0x5c: /* FCVTAU */ - case 0x7a: /* FCVTPU */ - case 0x7b: /* FCVTZU */ - case 0x2c: /* FCMGT (zero) */ - case 0x2d: /* FCMEQ (zero) */ - case 0x2e: /* FCMLT (zero) */ - case 0x6c: /* FCMGE (zero) */ - case 0x6d: /* FCMLE (zero) */ - unallocated_encoding(s); - return; - } - - - /* Check additional constraints for the scalar encoding */ - if (is_scalar) { - if (!is_q) { - unallocated_encoding(s); - return; - } - } - - if (!fp_access_check(s)) { - return; - } - - if (rmode >= 0 || need_fpst) { - tcg_fpstatus = fpstatus_ptr(FPST_FPCR_F16); - } - - if (rmode >= 0) { - tcg_rmode = gen_set_rmode(rmode, tcg_fpstatus); - } - - if (is_scalar) { - TCGv_i32 tcg_op = read_fp_hreg(s, rn); - TCGv_i32 tcg_res = tcg_temp_new_i32(); - - switch (fpop) { - case 0x3d: /* FRECPE */ - gen_helper_recpe_f16(tcg_res, tcg_op, tcg_fpstatus); - break; - case 0x3f: /* FRECPX */ - gen_helper_frecpx_f16(tcg_res, tcg_op, tcg_fpstatus); - break; - case 0x7d: /* FRSQRTE */ - gen_helper_rsqrte_f16(tcg_res, tcg_op, tcg_fpstatus); - break; - default: - case 0x1a: /* FCVTNS */ - case 0x1b: /* FCVTMS */ - case 0x1c: /* FCVTAS */ - case 0x3a: /* FCVTPS */ - case 0x3b: /* FCVTZS */ - case 0x5a: /* FCVTNU */ - case 0x5b: /* FCVTMU */ - case 0x5c: /* FCVTAU */ - case 0x7a: /* FCVTPU */ - case 0x7b: /* FCVTZU */ - g_assert_not_reached(); - } - - /* limit any sign extension going on */ - tcg_gen_andi_i32(tcg_res, tcg_res, 0xffff); - write_fp_sreg(s, rd, tcg_res); - } else { - for (pass = 0; pass < (is_q ? 8 : 4); pass++) { - TCGv_i32 tcg_op = tcg_temp_new_i32(); - TCGv_i32 tcg_res = tcg_temp_new_i32(); - - read_vec_element_i32(s, tcg_op, rn, pass, MO_16); - - switch (fpop) { - case 0x3d: /* FRECPE */ - gen_helper_recpe_f16(tcg_res, tcg_op, tcg_fpstatus); - break; - case 0x7d: /* FRSQRTE */ - gen_helper_rsqrte_f16(tcg_res, tcg_op, tcg_fpstatus); - break; - default: - case 0x2f: /* FABS */ - case 0x6f: /* FNEG */ - case 0x7f: /* FSQRT */ - case 0x18: /* FRINTN */ - case 0x19: /* FRINTM */ - case 0x38: /* FRINTP */ - case 0x39: /* FRINTZ */ - case 0x58: /* FRINTA */ - case 0x79: /* FRINTI */ - case 0x59: /* FRINTX */ - case 0x1a: /* FCVTNS */ - case 0x1b: /* FCVTMS */ - case 0x1c: /* FCVTAS */ - case 0x3a: /* FCVTPS */ - case 0x3b: /* FCVTZS */ - case 0x5a: /* FCVTNU */ - case 0x5b: /* FCVTMU */ - case 0x5c: /* FCVTAU */ - case 0x7a: /* FCVTPU */ - case 0x7b: /* FCVTZU */ - g_assert_not_reached(); - } - - write_vec_element_i32(s, tcg_res, rd, pass, MO_16); - } - - clear_vec_high(s, is_q, rd); - } - - if (tcg_rmode) { - gen_restore_rmode(tcg_rmode, tcg_fpstatus); - } -} - /* C3.6 Data processing - SIMD, inc Crypto * * As the decode gets a little complex we are using a table based @@ -10038,8 +9787,6 @@ static void disas_simd_two_reg_misc_fp16(DisasContext *s, uint32_t insn) static const AArch64DecodeTable data_proc_simd[] = { /* pattern , mask , fn */ { 0x0e200800, 0x9f3e0c00, disas_simd_two_reg_misc }, - { 0x5e200800, 0xdf3e0c00, disas_simd_scalar_two_reg_misc }, - { 0x0e780800, 0x8f7e0c00, disas_simd_two_reg_misc_fp16 }, { 0x00000000, 0x00000000, NULL } }; diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode index d1c4a330f2..9b3b09c3bb 100644 --- a/target/arm/tcg/a64.decode +++ b/target/arm/tcg/a64.decode @@ -1667,6 +1667,15 @@ FCMLE0_s 0111 1110 1.1 00000 11011 0 ..... ..... @rr_sd FCMLT0_s 0101 1110 111 11000 11101 0 ..... ..... @rr_h FCMLT0_s 0101 1110 1.1 00000 11101 0 ..... ..... @rr_sd +FRECPE_s 0101 1110 111 11001 11011 0 ..... ..... @rr_h +FRECPE_s 0101 1110 1.1 00001 11011 0 ..... ..... @rr_sd + +FRECPX_s 0101 1110 111 11001 11111 0 ..... ..... @rr_h +FRECPX_s 0101 1110 1.1 00001 11111 0 ..... ..... @rr_sd + +FRSQRTE_s 0111 1110 111 11001 11011 0 ..... ..... @rr_h +FRSQRTE_s 0111 1110 1.1 00001 11011 0 ..... ..... @rr_sd + @icvt_h . ....... .. ...... ...... rn:5 rd:5 \ &fcvt sf=0 esz=1 shift=0 @icvt_sd . ....... .. ...... ...... rn:5 rd:5 \ @@ -1848,6 +1857,12 @@ FCMLE0_v 0.10 1110 1.1 00000 11011 0 ..... ..... @qrr_sd FCMLT0_v 0.00 1110 111 11000 11101 0 ..... ..... @qrr_h FCMLT0_v 0.00 1110 1.1 00000 11101 0 ..... ..... @qrr_sd +FRECPE_v 0.00 1110 111 11001 11011 0 ..... ..... @qrr_h +FRECPE_v 0.00 1110 1.1 00001 11011 0 ..... ..... @qrr_sd + +FRSQRTE_v 0.10 1110 111 11001 11011 0 ..... ..... @qrr_h +FRSQRTE_v 0.10 1110 1.1 00001 11011 0 ..... ..... @qrr_sd + &fcvt_q rd rn esz q shift @fcvtq_h . q:1 . ...... 001 .... ...... rn:5 rd:5 \ &fcvt_q esz=1 shift=%fcvt_f_sh_h