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Sat, 21 Jun 2025 16:54:12 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v2 052/101] target/arm: Implement SME2 FCVT (widening), FCVTL Date: Sat, 21 Jun 2025 16:49:48 -0700 Message-ID: <20250621235037.74091-53-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250621235037.74091-1-richard.henderson@linaro.org> References: <20250621235037.74091-1-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=2607:f8b0:4864:20::42d; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42d.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: 2.1.29 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: 1750550523025116600 Content-Type: text/plain; charset="utf-8" Signed-off-by: Richard Henderson --- target/arm/tcg/helper-sme.h | 2 ++ target/arm/tcg/sme_helper.c | 38 ++++++++++++++++++++++++++++++++++ target/arm/tcg/translate-sme.c | 5 +++++ target/arm/tcg/sme.decode | 5 +++++ 4 files changed, 50 insertions(+) diff --git a/target/arm/tcg/helper-sme.h b/target/arm/tcg/helper-sme.h index cb81f89fb3..04db920299 100644 --- a/target/arm/tcg/helper-sme.h +++ b/target/arm/tcg/helper-sme.h @@ -218,3 +218,5 @@ DEF_HELPER_FLAGS_4(sme2_bfcvt, TCG_CALL_NO_RWG, void, p= tr, ptr, fpst, i32) DEF_HELPER_FLAGS_4(sme2_bfcvtn, TCG_CALL_NO_RWG, void, ptr, ptr, fpst, i32) DEF_HELPER_FLAGS_4(sme2_fcvt_n, TCG_CALL_NO_RWG, void, ptr, ptr, fpst, i32) DEF_HELPER_FLAGS_4(sme2_fcvtn, TCG_CALL_NO_RWG, void, ptr, ptr, fpst, i32) +DEF_HELPER_FLAGS_4(sme2_fcvt_w, TCG_CALL_NO_RWG, void, ptr, ptr, fpst, i32) +DEF_HELPER_FLAGS_4(sme2_fcvtl, TCG_CALL_NO_RWG, void, ptr, ptr, fpst, i32) diff --git a/target/arm/tcg/sme_helper.c b/target/arm/tcg/sme_helper.c index cd66f321d2..2a6635010a 100644 --- a/target/arm/tcg/sme_helper.c +++ b/target/arm/tcg/sme_helper.c @@ -1562,3 +1562,41 @@ void HELPER(sme2_fcvtn)(void *vd, void *vs, float_st= atus *fpst, uint32_t desc) d[H2(i * 2 + 1)] =3D d1; } } + +/* Expand and convert */ +void HELPER(sme2_fcvt_w)(void *vd, void *vs, float_status *fpst, uint32_t = desc) +{ + ARMVectorReg scratch; + size_t oprsz =3D simd_oprsz(desc); + size_t i, n =3D oprsz / 4; + float16 *s =3D vs; + float32 *d0 =3D vd; + float32 *d1 =3D vd + sizeof(ARMVectorReg); + + if (vd =3D=3D vs) { + s =3D memcpy(&scratch, s, oprsz); + } + + for (i =3D 0; i < n; ++i) { + d0[H4(i)] =3D float16_to_float32(s[H2(i)], true, fpst); + } + for (i =3D 0; i < n; ++i) { + d1[H4(i)] =3D float16_to_float32(s[H2(n + i)], true, fpst); + } +} + +/* Deinterleave and convert. */ +void HELPER(sme2_fcvtl)(void *vd, void *vs, float_status *fpst, uint32_t d= esc) +{ + size_t i, n =3D simd_oprsz(desc) / 4; + float16 *s =3D vs; + float32 *d0 =3D vd; + float32 *d1 =3D vd + sizeof(ARMVectorReg); + + for (i =3D 0; i < n; ++i) { + float32 v0 =3D float16_to_float32(s[H2(i * 2 + 0)], true, fpst); + float32 v1 =3D float16_to_float32(s[H2(i * 2 + 1)], true, fpst); + d0[H4(i)] =3D v0; + d1[H4(i)] =3D v1; + } +} diff --git a/target/arm/tcg/translate-sme.c b/target/arm/tcg/translate-sme.c index 39a9831d3b..60ce5b518f 100644 --- a/target/arm/tcg/translate-sme.c +++ b/target/arm/tcg/translate-sme.c @@ -1288,3 +1288,8 @@ TRANS_FEAT(FCVT_n, aa64_sme2, do_zz_fpst, a, 0, FPST_A64, gen_helper_sme2_fcvt_n) TRANS_FEAT(FCVTN, aa64_sme2, do_zz_fpst, a, 0, FPST_A64, gen_helper_sme2_fcvtn) + +TRANS_FEAT(FCVT_w, aa64_sme2_f16f16, do_zz_fpst, a, 0, + FPST_A64_F16, gen_helper_sme2_fcvt_w) +TRANS_FEAT(FCVTL, aa64_sme2_f16f16, do_zz_fpst, a, 0, + FPST_A64_F16, gen_helper_sme2_fcvtl) diff --git a/target/arm/tcg/sme.decode b/target/arm/tcg/sme.decode index 8cca7d0d46..644794bdc1 100644 --- a/target/arm/tcg/sme.decode +++ b/target/arm/tcg/sme.decode @@ -725,9 +725,14 @@ FMLS_nx_d 11000001 1101 .... 1 .. 00. ...00 10 .= .. @azx_4x1_i1_o3 &zz_n zd zn n @zz_1x2 ........ ... ..... ...... ..... zd:5 \ &zz_n n=3D1 zn=3D%zn_ax2 +@zz_2x1 ........ ... ..... ...... zn:5 ..... \ + &zz_n n=3D1 zd=3D%zd_ax2 =20 BFCVT 11000001 011 00000 111000 ....0 ..... @zz_1x2 BFCVTN 11000001 011 00000 111000 ....1 ..... @zz_1x2 =20 FCVT_n 11000001 001 00000 111000 ....0 ..... @zz_1x2 FCVTN 11000001 001 00000 111000 ....1 ..... @zz_1x2 + +FCVT_w 11000001 101 00000 111000 ..... ....0 @zz_2x1 +FCVTL 11000001 101 00000 111000 ..... ....1 @zz_2x1 --=20 2.43.0