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That's all we know. 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: Laurent Desnogues , peter.maydell@linaro.org, alex.bennee@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Wrote too much with low-half zip (zip1) with vl % 512 !=3D 0. Adjust all of the x + (y << s) to x | (y << s) as a style fix. We only ever have exact overlap between D, M, and N. Therefore we only need a single temporary, and we do not need to check for partial overlap. Reported-by: Laurent Desnogues Signed-off-by: Richard Henderson --- target/arm/sve_helper.c | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c index fcb46f150f..b8651ae173 100644 --- a/target/arm/sve_helper.c +++ b/target/arm/sve_helper.c @@ -1870,6 +1870,7 @@ void HELPER(sve_zip_p)(void *vd, void *vn, void *vm, = uint32_t pred_desc) intptr_t oprsz =3D extract32(pred_desc, 0, SIMD_OPRSZ_BITS) + 2; int esz =3D extract32(pred_desc, SIMD_DATA_SHIFT, 2); intptr_t high =3D extract32(pred_desc, SIMD_DATA_SHIFT + 2, 1); + int esize =3D 1 << esz; uint64_t *d =3D vd; intptr_t i; =20 @@ -1882,33 +1883,35 @@ void HELPER(sve_zip_p)(void *vd, void *vn, void *vm= , uint32_t pred_desc) mm =3D extract64(mm, high * half, half); nn =3D expand_bits(nn, esz); mm =3D expand_bits(mm, esz); - d[0] =3D nn + (mm << (1 << esz)); + d[0] =3D nn | (mm << esize); } else { - ARMPredicateReg tmp_n, tmp_m; + ARMPredicateReg tmp; =20 /* We produce output faster than we consume input. Therefore we must be mindful of possible overlap. */ - if ((vn - vd) < (uintptr_t)oprsz) { - vn =3D memcpy(&tmp_n, vn, oprsz); - } - if ((vm - vd) < (uintptr_t)oprsz) { - vm =3D memcpy(&tmp_m, vm, oprsz); + if (vd =3D=3D vn) { + vn =3D memcpy(&tmp, vn, oprsz); + if (vd =3D=3D vm) { + vm =3D vn; + } + } else if (vd =3D=3D vm) { + vm =3D memcpy(&tmp, vm, oprsz); } if (high) { high =3D oprsz >> 1; } =20 - if ((high & 3) =3D=3D 0) { + if ((oprsz & 7) =3D=3D 0) { uint32_t *n =3D vn, *m =3D vm; high >>=3D 2; =20 - for (i =3D 0; i < DIV_ROUND_UP(oprsz, 8); i++) { + for (i =3D 0; i < oprsz / 8; i++) { uint64_t nn =3D n[H4(high + i)]; uint64_t mm =3D m[H4(high + i)]; =20 nn =3D expand_bits(nn, esz); mm =3D expand_bits(mm, esz); - d[i] =3D nn + (mm << (1 << esz)); + d[i] =3D nn | (mm << esize); } } else { uint8_t *n =3D vn, *m =3D vm; @@ -1920,7 +1923,7 @@ void HELPER(sve_zip_p)(void *vd, void *vn, void *vm, = uint32_t pred_desc) =20 nn =3D expand_bits(nn, esz); mm =3D expand_bits(mm, esz); - d16[H2(i)] =3D nn + (mm << (1 << esz)); + d16[H2(i)] =3D nn | (mm << esize); } } } --=20 2.25.1