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Tue, 10 Dec 2024 08:19:39 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Subject: [PATCH v2 29/69] target/arm: Convert BFCVT to decodetree Date: Tue, 10 Dec 2024 10:16:53 -0600 Message-ID: <20241210161733.1830573-30-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241210161733.1830573-1-richard.henderson@linaro.org> References: <20241210161733.1830573-1-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=2a00:1450:4864:20::12a; envelope-from=richard.henderson@linaro.org; helo=mail-lf1-x12a.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: 1733847708909116600 Content-Type: text/plain; charset="utf-8" Signed-off-by: Richard Henderson Reviewed-by: Peter Maydell --- target/arm/tcg/translate-a64.c | 26 +++++++------------------- target/arm/tcg/a64.decode | 3 +++ 2 files changed, 10 insertions(+), 19 deletions(-) diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index 45321cdca7..ef0379d17f 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -8420,6 +8420,11 @@ static const FPScalar1 f_scalar_frintx =3D { }; TRANS(FRINTX_s, do_fp1_scalar, a, &f_scalar_frintx, -1) =20 +static const FPScalar1 f_scalar_bfcvt =3D { + .gen_s =3D gen_helper_bfcvt, +}; +TRANS_FEAT(BFCVT_s, aa64_bf16, do_fp1_scalar, a, &f_scalar_bfcvt, -1) + /* Floating-point data-processing (1 source) - single precision */ static void handle_fp_1src_single(DisasContext *s, int opcode, int rd, int= rn) { @@ -8432,9 +8437,6 @@ static void handle_fp_1src_single(DisasContext *s, in= t opcode, int rd, int rn) tcg_res =3D tcg_temp_new_i32(); =20 switch (opcode) { - case 0x6: /* BFCVT */ - gen_fpst =3D gen_helper_bfcvt; - break; case 0x10: /* FRINT32Z */ rmode =3D FPROUNDING_ZERO; gen_fpst =3D gen_helper_frint32_s; @@ -8454,6 +8456,7 @@ static void handle_fp_1src_single(DisasContext *s, in= t opcode, int rd, int rn) case 0x1: /* FABS */ case 0x2: /* FNEG */ case 0x3: /* FSQRT */ + case 0x6: /* BFCVT */ case 0x8: /* FRINTN */ case 0x9: /* FRINTP */ case 0xa: /* FRINTM */ @@ -8652,28 +8655,13 @@ static void disas_fp_1src(DisasContext *s, uint32_t= insn) } break; =20 - case 0x6: - switch (type) { - case 1: /* BFCVT */ - if (!dc_isar_feature(aa64_bf16, s)) { - goto do_unallocated; - } - if (!fp_access_check(s)) { - return; - } - handle_fp_1src_single(s, opcode, rd, rn); - break; - default: - goto do_unallocated; - } - break; - default: do_unallocated: case 0x0: /* FMOV */ case 0x1: /* FABS */ case 0x2: /* FNEG */ case 0x3: /* FSQRT */ + case 0x6: /* BFCVT */ case 0x8: /* FRINTN */ case 0x9: /* FRINTP */ case 0xa: /* FRINTM */ diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode index 9d2f099c9c..4a48fcff1d 100644 --- a/target/arm/tcg/a64.decode +++ b/target/arm/tcg/a64.decode @@ -45,6 +45,7 @@ &qrrrr_e q rd rn rm ra esz =20 @rr_h ........ ... ..... ...... rn:5 rd:5 &rr_e esz=3D1 +@rr_s ........ ... ..... ...... rn:5 rd:5 &rr_e esz=3D2 @rr_d ........ ... ..... ...... rn:5 rd:5 &rr_e esz=3D3 @rr_sd ........ ... ..... ...... rn:5 rd:5 &rr_e esz=3D%esz_sd @rr_hsd ........ ... ..... ...... rn:5 rd:5 &rr_e esz=3D%esz_h= sd @@ -1337,6 +1338,8 @@ FRINTA_s 00011110 .. 1 001100 10000 ..... ....= . @rr_hsd FRINTX_s 00011110 .. 1 001110 10000 ..... ..... @rr_hsd FRINTI_s 00011110 .. 1 001111 10000 ..... ..... @rr_hsd =20 +BFCVT_s 00011110 01 1 000110 10000 ..... ..... @rr_s + # Floating-point Immediate =20 FMOVI_s 0001 1110 .. 1 imm:8 100 00000 rd:5 esz=3D%esz_hsd --=20 2.43.0