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Fri, 30 Apr 2021 13:29:58 -0700 (PDT) Received: from localhost.localdomain ([71.212.144.24]) by smtp.gmail.com with ESMTPSA id q23sm3788781pgt.42.2021.04.30.13.29.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 30 Apr 2021 13:29:58 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v6 77/82] target/arm: Fix decode for VDOT (indexed) Date: Fri, 30 Apr 2021 13:26:05 -0700 Message-Id: <20210430202610.1136687-78-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210430202610.1136687-1-richard.henderson@linaro.org> References: <20210430202610.1136687-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::42e; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42e.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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-arm@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" We were extracting the M register twice, once incorrectly as M:vm and once correctly as rm. Remove the incorrect name and remove the incorrect decode. Signed-off-by: Richard Henderson --- target/arm/neon-shared.decode | 4 +- target/arm/translate-neon.c | 90 +++++++++++++++-------------------- 2 files changed, 40 insertions(+), 54 deletions(-) diff --git a/target/arm/neon-shared.decode b/target/arm/neon-shared.decode index ca0c699072..facb621450 100644 --- a/target/arm/neon-shared.decode +++ b/target/arm/neon-shared.decode @@ -61,8 +61,8 @@ VCMLA_scalar 1111 1110 0 . rot:2 .... .... 1000 . q:1 index:1 0 vm:4 \ VCMLA_scalar 1111 1110 1 . rot:2 .... .... 1000 . q:1 . 0 .... \ vm=%vm_dp vn=%vn_dp vd=%vd_dp size=2 index=0 -VDOT_scalar 1111 1110 0 . 10 .... .... 1101 . q:1 index:1 u:1 rm:4 \ - vm=%vm_dp vn=%vn_dp vd=%vd_dp +VDOT_scalar 1111 1110 0 . 10 .... .... 1101 . q:1 index:1 u:1 vm:4 \ + vn=%vn_dp vd=%vd_dp %vfml_scalar_q0_rm 0:3 5:1 %vfml_scalar_q1_index 5:1 3:1 diff --git a/target/arm/translate-neon.c b/target/arm/translate-neon.c index a0e267694b..52b75ff76f 100644 --- a/target/arm/translate-neon.c +++ b/target/arm/translate-neon.c @@ -151,6 +151,36 @@ static void neon_store_element64(int reg, int ele, MemOp size, TCGv_i64 var) } } +static bool do_neon_ddda(DisasContext *s, int q, int vd, int vn, int vm, + int data, gen_helper_gvec_4 *fn_gvec) +{ + /* UNDEF accesses to D16-D31 if they don't exist. */ + if (((vd | vn | vm) & 0x10) && !dc_isar_feature(aa32_simd_r32, s)) { + return false; + } + + /* + * UNDEF accesses to odd registers for each bit of Q. + * Q will be 0b111 for all Q-reg instructions, otherwise + * when we have mixed Q- and D-reg inputs. + */ + if (((vd & 1) * 4 | (vn & 1) * 2 | (vm & 1)) & q) { + return false; + } + + if (!vfp_access_check(s)) { + return true; + } + + int opr_sz = q ? 16 : 8; + tcg_gen_gvec_4_ool(vfp_reg_offset(1, vd), + vfp_reg_offset(1, vn), + vfp_reg_offset(1, vm), + vfp_reg_offset(1, vd), + opr_sz, opr_sz, data, fn_gvec); + return true; +} + static bool do_neon_ddda_fpst(DisasContext *s, int q, int vd, int vn, int vm, int data, ARMFPStatusFlavour fp_flavor, gen_helper_gvec_4_ptr *fn_gvec_ptr) @@ -241,35 +271,13 @@ static bool trans_VCADD(DisasContext *s, arg_VCADD *a) static bool trans_VDOT(DisasContext *s, arg_VDOT *a) { - int opr_sz; - gen_helper_gvec_4 *fn_gvec; - if (!dc_isar_feature(aa32_dp, s)) { return false; } - - /* UNDEF accesses to D16-D31 if they don't exist. */ - if (!dc_isar_feature(aa32_simd_r32, s) && - ((a->vd | a->vn | a->vm) & 0x10)) { - return false; - } - - if ((a->vn | a->vm | a->vd) & a->q) { - return false; - } - - if (!vfp_access_check(s)) { - return true; - } - - opr_sz = (1 + a->q) * 8; - fn_gvec = a->u ? gen_helper_gvec_udot_b : gen_helper_gvec_sdot_b; - tcg_gen_gvec_4_ool(vfp_reg_offset(1, a->vd), - vfp_reg_offset(1, a->vn), - vfp_reg_offset(1, a->vm), - vfp_reg_offset(1, a->vd), - opr_sz, opr_sz, 0, fn_gvec); - return true; + return do_neon_ddda(s, a->q * 7, a->vd, a->vn, a->vm, 0, + a->u + ? gen_helper_gvec_udot_b + : gen_helper_gvec_sdot_b); } static bool trans_VFML(DisasContext *s, arg_VFML *a) @@ -323,35 +331,13 @@ static bool trans_VCMLA_scalar(DisasContext *s, arg_VCMLA_scalar *a) static bool trans_VDOT_scalar(DisasContext *s, arg_VDOT_scalar *a) { - gen_helper_gvec_4 *fn_gvec; - int opr_sz; - if (!dc_isar_feature(aa32_dp, s)) { return false; } - - /* UNDEF accesses to D16-D31 if they don't exist. */ - if (!dc_isar_feature(aa32_simd_r32, s) && - ((a->vd | a->vn) & 0x10)) { - return false; - } - - if ((a->vd | a->vn) & a->q) { - return false; - } - - if (!vfp_access_check(s)) { - return true; - } - - fn_gvec = a->u ? gen_helper_gvec_udot_idx_b : gen_helper_gvec_sdot_idx_b; - opr_sz = (1 + a->q) * 8; - tcg_gen_gvec_4_ool(vfp_reg_offset(1, a->vd), - vfp_reg_offset(1, a->vn), - vfp_reg_offset(1, a->rm), - vfp_reg_offset(1, a->vd), - opr_sz, opr_sz, a->index, fn_gvec); - return true; + return do_neon_ddda(s, a->q * 6, a->vd, a->vn, a->vm, a->index, + a->u + ? gen_helper_gvec_udot_idx_b + : gen_helper_gvec_sdot_idx_b); } static bool trans_VFML_scalar(DisasContext *s, arg_VFML_scalar *a) -- 2.25.1