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Fri, 13 Dec 2024 09:33:30 -0800 (PST) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 55/85] target/arm: Convert FSQRT (vector) to decodetree Date: Fri, 13 Dec 2024 17:31:59 +0000 Message-Id: <20241213173229.3308926-56-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241213173229.3308926-1-peter.maydell@linaro.org> References: <20241213173229.3308926-1-peter.maydell@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=2a00:1450:4864:20::432; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x432.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, T_SPF_TEMPERROR=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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1734111803066116600 Content-Type: text/plain; charset="utf-8" From: Richard Henderson Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson Message-id: 20241211163036.2297116-56-richard.henderson@linaro.org Signed-off-by: Peter Maydell --- target/arm/tcg/a64.decode | 3 ++ target/arm/tcg/translate-a64.c | 69 ++++++++++++++++++++++++---------- 2 files changed, 53 insertions(+), 19 deletions(-) diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode index f46bd1a715e..1e0eb4a748e 100644 --- a/target/arm/tcg/a64.decode +++ b/target/arm/tcg/a64.decode @@ -1694,3 +1694,6 @@ FABS_v 0.00 1110 1.1 00000 11111 0 ..... ...= .. @qrr_sd =20 FNEG_v 0.10 1110 111 11000 11111 0 ..... ..... @qrr_h FNEG_v 0.10 1110 1.1 00000 11111 0 ..... ..... @qrr_sd + +FSQRT_v 0.10 1110 111 11001 11111 0 ..... ..... @qrr_h +FSQRT_v 0.10 1110 1.1 00001 11111 0 ..... ..... @qrr_sd diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index fd7f7ae7146..287e9338a45 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -9164,6 +9164,51 @@ static bool do_fabs_fneg_v(DisasContext *s, arg_qrr_= e *a, GVecGen2Fn *fn) TRANS(FABS_v, do_fabs_fneg_v, a, gen_gvec_fabs) TRANS(FNEG_v, do_fabs_fneg_v, a, gen_gvec_fneg) =20 +static bool do_fp1_vector(DisasContext *s, arg_qrr_e *a, + const FPScalar1 *f, int rmode) +{ + TCGv_i32 tcg_rmode =3D NULL; + TCGv_ptr fpst; + int check =3D fp_access_check_vector_hsd(s, a->q, a->esz); + + if (check <=3D 0) { + return check =3D=3D 0; + } + + fpst =3D fpstatus_ptr(a->esz =3D=3D MO_16 ? FPST_FPCR_F16 : FPST_FPCR); + if (rmode >=3D 0) { + tcg_rmode =3D gen_set_rmode(rmode, fpst); + } + + if (a->esz =3D=3D MO_64) { + TCGv_i64 t64 =3D tcg_temp_new_i64(); + + for (int pass =3D 0; pass < 2; ++pass) { + read_vec_element(s, t64, a->rn, pass, MO_64); + f->gen_d(t64, t64, fpst); + write_vec_element(s, t64, a->rd, pass, MO_64); + } + } else { + TCGv_i32 t32 =3D tcg_temp_new_i32(); + void (*gen)(TCGv_i32, TCGv_i32, TCGv_ptr) + =3D (a->esz =3D=3D MO_16 ? f->gen_h : f->gen_s); + + for (int pass =3D 0, n =3D (a->q ? 16 : 8) >> a->esz; pass < n; ++= pass) { + read_vec_element_i32(s, t32, a->rn, pass, a->esz); + gen(t32, t32, fpst); + write_vec_element_i32(s, t32, a->rd, pass, a->esz); + } + } + clear_vec_high(s, a->q, a->rd); + + if (rmode >=3D 0) { + gen_restore_rmode(tcg_rmode, fpst); + } + return true; +} + +TRANS(FSQRT_v, do_fp1_vector, a, &f_scalar_fsqrt, -1) + /* Common vector code for handling integer to FP conversion */ static void handle_simd_intfp_conv(DisasContext *s, int rd, int rn, int elements, int is_signed, @@ -9461,9 +9506,6 @@ static void handle_2misc_64(DisasContext *s, int opco= de, bool u, * requires them. */ switch (opcode) { - case 0x7f: /* FSQRT */ - gen_helper_vfp_sqrtd(tcg_rd, tcg_rn, tcg_fpstatus); - break; case 0x1a: /* FCVTNS */ case 0x1b: /* FCVTMS */ case 0x1c: /* FCVTAS */ @@ -9507,6 +9549,7 @@ static void handle_2misc_64(DisasContext *s, int opco= de, bool u, case 0xb: /* ABS, NEG */ case 0x2f: /* FABS */ case 0x6f: /* FNEG */ + case 0x7f: /* FSQRT */ g_assert_not_reached(); } } @@ -10004,13 +10047,6 @@ static void disas_simd_two_reg_misc(DisasContext *= s, uint32_t insn) } handle_2misc_fcmp_zero(s, opcode, false, u, is_q, size, rn, rd= ); return; - case 0x7f: /* FSQRT */ - need_fpstatus =3D true; - if (size =3D=3D 3 && !is_q) { - unallocated_encoding(s); - return; - } - break; case 0x1a: /* FCVTNS */ case 0x1b: /* FCVTMS */ case 0x3a: /* FCVTPS */ @@ -10104,6 +10140,7 @@ static void disas_simd_two_reg_misc(DisasContext *s= , uint32_t insn) case 0x56: /* FCVTXN, FCVTXN2 */ case 0x2f: /* FABS */ case 0x6f: /* FNEG */ + case 0x7f: /* FSQRT */ unallocated_encoding(s); return; } @@ -10176,9 +10213,6 @@ static void disas_simd_two_reg_misc(DisasContext *s= , uint32_t insn) { /* Special cases for 32 bit elements */ switch (opcode) { - case 0x7f: /* FSQRT */ - gen_helper_vfp_sqrts(tcg_res, tcg_op, tcg_fpstatus); - break; case 0x1a: /* FCVTNS */ case 0x1b: /* FCVTMS */ case 0x1c: /* FCVTAS */ @@ -10221,6 +10255,7 @@ static void disas_simd_two_reg_misc(DisasContext *s= , uint32_t insn) case 0x7: /* SQABS, SQNEG */ case 0x2f: /* FABS */ case 0x6f: /* FNEG */ + case 0x7f: /* FSQRT */ g_assert_not_reached(); } } @@ -10365,12 +10400,10 @@ static void disas_simd_two_reg_misc_fp16(DisasCon= text *s, uint32_t insn) break; case 0x7d: /* FRSQRTE */ break; - case 0x7f: /* FSQRT (vector) */ - only_in_vector =3D true; - break; default: case 0x2f: /* FABS */ case 0x6f: /* FNEG */ + case 0x7f: /* FSQRT (vector) */ unallocated_encoding(s); return; } @@ -10475,12 +10508,10 @@ static void disas_simd_two_reg_misc_fp16(DisasCon= text *s, uint32_t insn) case 0x7d: /* FRSQRTE */ gen_helper_rsqrte_f16(tcg_res, tcg_op, tcg_fpstatus); break; - case 0x7f: /* FSQRT */ - gen_helper_vfp_sqrth(tcg_res, tcg_op, tcg_fpstatus); - break; default: case 0x2f: /* FABS */ case 0x6f: /* FNEG */ + case 0x7f: /* FSQRT */ g_assert_not_reached(); } =20 --=20 2.34.1