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Fri, 04 Jul 2025 07:25:31 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, peter.maydell@linaro.org Subject: [PATCH v4 074/108] target/arm: Split out do_whileg from helper_sve_whileg Date: Fri, 4 Jul 2025 08:20:37 -0600 Message-ID: <20250704142112.1018902-75-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250704142112.1018902-1-richard.henderson@linaro.org> References: <20250704142112.1018902-1-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::32c; envelope-from=richard.henderson@linaro.org; helo=mail-ot1-x32c.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: 1751640523493116600 Content-Type: text/plain; charset="utf-8" Signed-off-by: Richard Henderson Reviewed-by: Peter Maydell --- target/arm/tcg/sve_helper.c | 39 +++++++++++++++++++------------------ 1 file changed, 20 insertions(+), 19 deletions(-) diff --git a/target/arm/tcg/sve_helper.c b/target/arm/tcg/sve_helper.c index 741d04309c..5e11e86e5e 100644 --- a/target/arm/tcg/sve_helper.c +++ b/target/arm/tcg/sve_helper.c @@ -4138,34 +4138,35 @@ uint32_t HELPER(sve_whilel)(void *vd, uint32_t coun= t, uint32_t pred_desc) return pred_count_test(oprbits, count, false); } =20 -uint32_t HELPER(sve_whileg)(void *vd, uint32_t count, uint32_t pred_desc) +/* D must be cleared on entry. */ +static void do_whileg(ARMPredicateReg *d, uint64_t esz_mask, + uint32_t count, uint32_t oprbits) { - intptr_t oprsz =3D FIELD_EX32(pred_desc, PREDDESC, OPRSZ); - intptr_t esz =3D FIELD_EX32(pred_desc, PREDDESC, ESZ); - uint64_t esz_mask =3D pred_esz_masks[esz]; - ARMPredicateReg *d =3D vd; - intptr_t i, invcount, oprbits =3D oprsz * 8; - uint64_t bits; - tcg_debug_assert(count <=3D oprbits); - - /* Begin with a zero predicate register. */ - memset(d, 0, sizeof(*d)); if (count) { - /* Set all of the requested bits. */ - bits =3D esz_mask; - if (oprbits & 63) { - bits &=3D MAKE_64BIT_MASK(0, oprbits & 63); - } + uint32_t i, invcount =3D oprbits - count; + uint64_t bits =3D esz_mask & MAKE_64BIT_MASK(invcount & 63, 64); =20 - invcount =3D oprbits - count; - for (i =3D (oprsz - 1) / 8; i > invcount / 64; --i) { + for (i =3D invcount / 64; i < oprbits / 64; ++i) { d->p[i] =3D bits; bits =3D esz_mask; } - d->p[i] =3D bits & MAKE_64BIT_MASK(invcount & 63, 64); + if (oprbits & 63) { + d->p[i] =3D bits & MAKE_64BIT_MASK(0, oprbits & 63); + } } +} =20 +uint32_t HELPER(sve_whileg)(void *vd, uint32_t count, uint32_t pred_desc) +{ + uint32_t oprsz =3D FIELD_EX32(pred_desc, PREDDESC, OPRSZ); + uint32_t esz =3D FIELD_EX32(pred_desc, PREDDESC, ESZ); + uint32_t oprbits =3D oprsz * 8; + uint64_t esz_mask =3D pred_esz_masks[esz]; + ARMPredicateReg *d =3D vd; + + memset(d, 0, sizeof(*d)); + do_whileg(d, esz_mask, count, oprbits); return pred_count_test(oprbits, count, true); } =20 --=20 2.43.0