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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3564afc3577sm11361473f8f.102.2024.05.28.07.08.15 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 May 2024 07:08:15 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 33/42] target/arm: Convert FRECPS, FRSQRTS to decodetree Date: Tue, 28 May 2024 15:07:44 +0100 Message-Id: <20240528140753.3620597-34-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240528140753.3620597-1-peter.maydell@linaro.org> References: <20240528140753.3620597-1-peter.maydell@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::32f; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x32f.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, T_SCC_BODY_TEXT_LINE=-0.01 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Richard Henderson These are the last instructions within handle_3same_float and disas_simd_scalar_three_reg_same_fp16 so remove them. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson Message-id: 20240524232121.284515-28-richard.henderson@linaro.org Signed-off-by: Peter Maydell --- target/arm/tcg/a64.decode | 12 ++ target/arm/tcg/translate-a64.c | 293 ++++----------------------------- 2 files changed, 46 insertions(+), 259 deletions(-) diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode index a852b5f06f0..84cb38f1dd0 100644 --- a/target/arm/tcg/a64.decode +++ b/target/arm/tcg/a64.decode @@ -731,6 +731,12 @@ FACGT_s 0111 1110 1.1 ..... 11101 1 ..... ..... @rrr_sd FABD_s 0111 1110 110 ..... 00010 1 ..... ..... @rrr_h FABD_s 0111 1110 1.1 ..... 11010 1 ..... ..... @rrr_sd +FRECPS_s 0101 1110 010 ..... 00111 1 ..... ..... @rrr_h +FRECPS_s 0101 1110 0.1 ..... 11111 1 ..... ..... @rrr_sd + +FRSQRTS_s 0101 1110 110 ..... 00111 1 ..... ..... @rrr_h +FRSQRTS_s 0101 1110 1.1 ..... 11111 1 ..... ..... @rrr_sd + ### Advanced SIMD three same FADD_v 0.00 1110 010 ..... 00010 1 ..... ..... @qrrr_h @@ -784,6 +790,12 @@ FACGT_v 0.10 1110 1.1 ..... 11101 1 ..... ..... @qrrr_sd FABD_v 0.10 1110 110 ..... 00010 1 ..... ..... @qrrr_h FABD_v 0.10 1110 1.1 ..... 11010 1 ..... ..... @qrrr_sd +FRECPS_v 0.00 1110 010 ..... 00111 1 ..... ..... @qrrr_h +FRECPS_v 0.00 1110 0.1 ..... 11111 1 ..... ..... @qrrr_sd + +FRSQRTS_v 0.00 1110 110 ..... 00111 1 ..... ..... @qrrr_h +FRSQRTS_v 0.00 1110 1.1 ..... 11111 1 ..... ..... @qrrr_sd + ### Advanced SIMD scalar x indexed element FMUL_si 0101 1111 00 .. .... 1001 . 0 ..... ..... @rrx_h diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index 633384d2a56..a7537a5104f 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -5035,6 +5035,20 @@ static const FPScalar f_scalar_fabd = { }; TRANS(FABD_s, do_fp3_scalar, a, &f_scalar_fabd) +static const FPScalar f_scalar_frecps = { + gen_helper_recpsf_f16, + gen_helper_recpsf_f32, + gen_helper_recpsf_f64, +}; +TRANS(FRECPS_s, do_fp3_scalar, a, &f_scalar_frecps) + +static const FPScalar f_scalar_frsqrts = { + gen_helper_rsqrtsf_f16, + gen_helper_rsqrtsf_f32, + gen_helper_rsqrtsf_f64, +}; +TRANS(FRSQRTS_s, do_fp3_scalar, a, &f_scalar_frsqrts) + static bool do_fp3_vector(DisasContext *s, arg_qrrr_e *a, gen_helper_gvec_3_ptr * const fns[3]) { @@ -5182,6 +5196,20 @@ static gen_helper_gvec_3_ptr * const f_vector_fabd[3] = { }; TRANS(FABD_v, do_fp3_vector, a, f_vector_fabd) +static gen_helper_gvec_3_ptr * const f_vector_frecps[3] = { + gen_helper_gvec_recps_h, + gen_helper_gvec_recps_s, + gen_helper_gvec_recps_d, +}; +TRANS(FRECPS_v, do_fp3_vector, a, f_vector_frecps) + +static gen_helper_gvec_3_ptr * const f_vector_frsqrts[3] = { + gen_helper_gvec_rsqrts_h, + gen_helper_gvec_rsqrts_s, + gen_helper_gvec_rsqrts_d, +}; +TRANS(FRSQRTS_v, do_fp3_vector, a, f_vector_frsqrts) + /* * Advanced SIMD scalar/vector x indexed element */ @@ -9308,107 +9336,6 @@ static void handle_3same_64(DisasContext *s, int opcode, bool u, } } -/* Handle the 3-same-operands float operations; shared by the scalar - * and vector encodings. The caller must filter out any encodings - * not allocated for the encoding it is dealing with. - */ -static void handle_3same_float(DisasContext *s, int size, int elements, - int fpopcode, int rd, int rn, int rm) -{ - int pass; - TCGv_ptr fpst = fpstatus_ptr(FPST_FPCR); - - for (pass = 0; pass < elements; pass++) { - if (size) { - /* Double */ - TCGv_i64 tcg_op1 = tcg_temp_new_i64(); - TCGv_i64 tcg_op2 = tcg_temp_new_i64(); - TCGv_i64 tcg_res = tcg_temp_new_i64(); - - read_vec_element(s, tcg_op1, rn, pass, MO_64); - read_vec_element(s, tcg_op2, rm, pass, MO_64); - - switch (fpopcode) { - case 0x1f: /* FRECPS */ - gen_helper_recpsf_f64(tcg_res, tcg_op1, tcg_op2, fpst); - break; - case 0x3f: /* FRSQRTS */ - gen_helper_rsqrtsf_f64(tcg_res, tcg_op1, tcg_op2, fpst); - break; - default: - case 0x18: /* FMAXNM */ - case 0x19: /* FMLA */ - case 0x1a: /* FADD */ - case 0x1b: /* FMULX */ - case 0x1c: /* FCMEQ */ - case 0x1e: /* FMAX */ - case 0x38: /* FMINNM */ - case 0x39: /* FMLS */ - case 0x3a: /* FSUB */ - case 0x3e: /* FMIN */ - case 0x5b: /* FMUL */ - case 0x5c: /* FCMGE */ - case 0x5d: /* FACGE */ - case 0x5f: /* FDIV */ - case 0x7a: /* FABD */ - case 0x7c: /* FCMGT */ - case 0x7d: /* FACGT */ - g_assert_not_reached(); - } - - write_vec_element(s, tcg_res, rd, pass, MO_64); - } else { - /* Single */ - TCGv_i32 tcg_op1 = tcg_temp_new_i32(); - TCGv_i32 tcg_op2 = tcg_temp_new_i32(); - TCGv_i32 tcg_res = tcg_temp_new_i32(); - - read_vec_element_i32(s, tcg_op1, rn, pass, MO_32); - read_vec_element_i32(s, tcg_op2, rm, pass, MO_32); - - switch (fpopcode) { - case 0x1f: /* FRECPS */ - gen_helper_recpsf_f32(tcg_res, tcg_op1, tcg_op2, fpst); - break; - case 0x3f: /* FRSQRTS */ - gen_helper_rsqrtsf_f32(tcg_res, tcg_op1, tcg_op2, fpst); - break; - default: - case 0x18: /* FMAXNM */ - case 0x19: /* FMLA */ - case 0x1a: /* FADD */ - case 0x1b: /* FMULX */ - case 0x1c: /* FCMEQ */ - case 0x1e: /* FMAX */ - case 0x38: /* FMINNM */ - case 0x39: /* FMLS */ - case 0x3a: /* FSUB */ - case 0x3e: /* FMIN */ - case 0x5b: /* FMUL */ - case 0x5c: /* FCMGE */ - case 0x5d: /* FACGE */ - case 0x5f: /* FDIV */ - case 0x7a: /* FABD */ - case 0x7c: /* FCMGT */ - case 0x7d: /* FACGT */ - g_assert_not_reached(); - } - - if (elements == 1) { - /* scalar single so clear high part */ - TCGv_i64 tcg_tmp = tcg_temp_new_i64(); - - tcg_gen_extu_i32_i64(tcg_tmp, tcg_res); - write_vec_element(s, tcg_tmp, rd, pass, MO_64); - } else { - write_vec_element_i32(s, tcg_res, rd, pass, MO_32); - } - } - } - - clear_vec_high(s, elements * (size ? 8 : 4) > 8, rd); -} - /* AdvSIMD scalar three same * 31 30 29 28 24 23 22 21 20 16 15 11 10 9 5 4 0 * +-----+---+-----------+------+---+------+--------+---+------+------+ @@ -9425,33 +9352,6 @@ static void disas_simd_scalar_three_reg_same(DisasContext *s, uint32_t insn) bool u = extract32(insn, 29, 1); TCGv_i64 tcg_rd; - if (opcode >= 0x18) { - /* Floating point: U, size[1] and opcode indicate operation */ - int fpopcode = opcode | (extract32(size, 1, 1) << 5) | (u << 6); - switch (fpopcode) { - case 0x1f: /* FRECPS */ - case 0x3f: /* FRSQRTS */ - break; - default: - case 0x1b: /* FMULX */ - case 0x5d: /* FACGE */ - case 0x7d: /* FACGT */ - case 0x1c: /* FCMEQ */ - case 0x5c: /* FCMGE */ - case 0x7a: /* FABD */ - case 0x7c: /* FCMGT */ - unallocated_encoding(s); - return; - } - - if (!fp_access_check(s)) { - return; - } - - handle_3same_float(s, extract32(size, 0, 1), 1, fpopcode, rd, rn, rm); - return; - } - switch (opcode) { case 0x1: /* SQADD, UQADD */ case 0x5: /* SQSUB, UQSUB */ @@ -9568,80 +9468,6 @@ static void disas_simd_scalar_three_reg_same(DisasContext *s, uint32_t insn) write_fp_dreg(s, rd, tcg_rd); } -/* AdvSIMD scalar three same FP16 - * 31 30 29 28 24 23 22 21 20 16 15 14 13 11 10 9 5 4 0 - * +-----+---+-----------+---+-----+------+-----+--------+---+----+----+ - * | 0 1 | U | 1 1 1 1 0 | a | 1 0 | Rm | 0 0 | opcode | 1 | Rn | Rd | - * +-----+---+-----------+---+-----+------+-----+--------+---+----+----+ - * v: 0101 1110 0100 0000 0000 0100 0000 0000 => 5e400400 - * m: 1101 1111 0110 0000 1100 0100 0000 0000 => df60c400 - */ -static void disas_simd_scalar_three_reg_same_fp16(DisasContext *s, - uint32_t insn) -{ - int rd = extract32(insn, 0, 5); - int rn = extract32(insn, 5, 5); - int opcode = extract32(insn, 11, 3); - int rm = extract32(insn, 16, 5); - bool u = extract32(insn, 29, 1); - bool a = extract32(insn, 23, 1); - int fpopcode = opcode | (a << 3) | (u << 4); - TCGv_ptr fpst; - TCGv_i32 tcg_op1; - TCGv_i32 tcg_op2; - TCGv_i32 tcg_res; - - switch (fpopcode) { - case 0x07: /* FRECPS */ - case 0x0f: /* FRSQRTS */ - break; - default: - case 0x03: /* FMULX */ - case 0x04: /* FCMEQ (reg) */ - case 0x14: /* FCMGE (reg) */ - case 0x15: /* FACGE */ - case 0x1a: /* FABD */ - case 0x1c: /* FCMGT (reg) */ - case 0x1d: /* FACGT */ - unallocated_encoding(s); - return; - } - - if (!dc_isar_feature(aa64_fp16, s)) { - unallocated_encoding(s); - } - - if (!fp_access_check(s)) { - return; - } - - fpst = fpstatus_ptr(FPST_FPCR_F16); - - tcg_op1 = read_fp_hreg(s, rn); - tcg_op2 = read_fp_hreg(s, rm); - tcg_res = tcg_temp_new_i32(); - - switch (fpopcode) { - case 0x07: /* FRECPS */ - gen_helper_recpsf_f16(tcg_res, tcg_op1, tcg_op2, fpst); - break; - case 0x0f: /* FRSQRTS */ - gen_helper_rsqrtsf_f16(tcg_res, tcg_op1, tcg_op2, fpst); - break; - default: - case 0x03: /* FMULX */ - case 0x04: /* FCMEQ (reg) */ - case 0x14: /* FCMGE (reg) */ - case 0x15: /* FACGE */ - case 0x1a: /* FABD */ - case 0x1c: /* FCMGT (reg) */ - case 0x1d: /* FACGT */ - g_assert_not_reached(); - } - - write_fp_sreg(s, rd, tcg_res); -} - /* AdvSIMD scalar three same extra * 31 30 29 28 24 23 22 21 20 16 15 14 11 10 9 5 4 0 * +-----+---+-----------+------+---+------+---+--------+---+----+----+ @@ -11114,7 +10940,7 @@ static void disas_simd_3same_logic(DisasContext *s, uint32_t insn) /* Pairwise op subgroup of C3.6.16. * - * This is called directly or via the handle_3same_float for float pairwise + * This is called directly for float pairwise * operations where the opcode and size are calculated differently. */ static void handle_simd_3same_pair(DisasContext *s, int is_q, int u, int opcode, @@ -11271,10 +11097,6 @@ static void disas_simd_3same_float(DisasContext *s, uint32_t insn) int rn = extract32(insn, 5, 5); int rd = extract32(insn, 0, 5); - int datasize = is_q ? 128 : 64; - int esize = 32 << size; - int elements = datasize / esize; - if (size == 1 && !is_q) { unallocated_encoding(s); return; @@ -11293,13 +11115,6 @@ static void disas_simd_3same_float(DisasContext *s, uint32_t insn) handle_simd_3same_pair(s, is_q, 0, fpopcode, size ? MO_64 : MO_32, rn, rm, rd); return; - case 0x1f: /* FRECPS */ - case 0x3f: /* FRSQRTS */ - if (!fp_access_check(s)) { - return; - } - handle_3same_float(s, size, elements, fpopcode, rd, rn, rm); - return; case 0x1d: /* FMLAL */ case 0x3d: /* FMLSL */ @@ -11328,10 +11143,12 @@ static void disas_simd_3same_float(DisasContext *s, uint32_t insn) case 0x1b: /* FMULX */ case 0x1c: /* FCMEQ */ case 0x1e: /* FMAX */ + case 0x1f: /* FRECPS */ case 0x38: /* FMINNM */ case 0x39: /* FMLS */ case 0x3a: /* FSUB */ case 0x3e: /* FMIN */ + case 0x3f: /* FRSQRTS */ case 0x5b: /* FMUL */ case 0x5c: /* FCMGE */ case 0x5d: /* FACGE */ @@ -11673,17 +11490,11 @@ static void disas_simd_three_reg_same_fp16(DisasContext *s, uint32_t insn) * together indicate the operation. */ int fpopcode = opcode | (a << 3) | (u << 4); - int datasize = is_q ? 128 : 64; - int elements = datasize / 16; bool pairwise; TCGv_ptr fpst; int pass; switch (fpopcode) { - case 0x7: /* FRECPS */ - case 0xf: /* FRSQRTS */ - pairwise = false; - break; case 0x10: /* FMAXNMP */ case 0x12: /* FADDP */ case 0x16: /* FMAXP */ @@ -11698,10 +11509,12 @@ static void disas_simd_three_reg_same_fp16(DisasContext *s, uint32_t insn) case 0x3: /* FMULX */ case 0x4: /* FCMEQ */ case 0x6: /* FMAX */ + case 0x7: /* FRECPS */ case 0x8: /* FMINNM */ case 0x9: /* FMLS */ case 0xa: /* FSUB */ case 0xe: /* FMIN */ + case 0xf: /* FRSQRTS */ case 0x13: /* FMUL */ case 0x14: /* FCMGE */ case 0x15: /* FACGE */ @@ -11765,44 +11578,7 @@ static void disas_simd_three_reg_same_fp16(DisasContext *s, uint32_t insn) write_vec_element_i32(s, tcg_res[pass], rd, pass, MO_16); } } else { - for (pass = 0; pass < elements; pass++) { - TCGv_i32 tcg_op1 = tcg_temp_new_i32(); - TCGv_i32 tcg_op2 = tcg_temp_new_i32(); - TCGv_i32 tcg_res = tcg_temp_new_i32(); - - read_vec_element_i32(s, tcg_op1, rn, pass, MO_16); - read_vec_element_i32(s, tcg_op2, rm, pass, MO_16); - - switch (fpopcode) { - case 0x7: /* FRECPS */ - gen_helper_recpsf_f16(tcg_res, tcg_op1, tcg_op2, fpst); - break; - case 0xf: /* FRSQRTS */ - gen_helper_rsqrtsf_f16(tcg_res, tcg_op1, tcg_op2, fpst); - break; - default: - case 0x0: /* FMAXNM */ - case 0x1: /* FMLA */ - case 0x2: /* FADD */ - case 0x3: /* FMULX */ - case 0x4: /* FCMEQ */ - case 0x6: /* FMAX */ - case 0x8: /* FMINNM */ - case 0x9: /* FMLS */ - case 0xa: /* FSUB */ - case 0xe: /* FMIN */ - case 0x13: /* FMUL */ - case 0x14: /* FCMGE */ - case 0x15: /* FACGE */ - case 0x17: /* FDIV */ - case 0x1a: /* FABD */ - case 0x1c: /* FCMGT */ - case 0x1d: /* FACGT */ - g_assert_not_reached(); - } - - write_vec_element_i32(s, tcg_res, rd, pass, MO_16); - } + g_assert_not_reached(); } clear_vec_high(s, is_q, rd); @@ -13572,7 +13348,6 @@ static const AArch64DecodeTable data_proc_simd[] = { { 0x5f000400, 0xdf800400, disas_simd_scalar_shift_imm }, { 0x0e400400, 0x9f60c400, disas_simd_three_reg_same_fp16 }, { 0x0e780800, 0x8f7e0c00, disas_simd_two_reg_misc_fp16 }, - { 0x5e400400, 0xdf60c400, disas_simd_scalar_three_reg_same_fp16 }, { 0x00000000, 0x00000000, NULL } };