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dkim=pass reason="pass (just generated, assumed good)" header.d=opensource.wdc.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d= opensource.wdc.com; h=content-transfer-encoding:mime-version :references:in-reply-to:x-mailer:message-id:date:subject:to :from; s=dkim; t=1654835302; x=1657427303; bh=pr6hAx/AyA4tNc/jCu 4l3I5cXGZwBRX0r0Dtn/dw+Bk=; b=ophG6vNj8u3ARo29i6lcAe/qVwuAOngcpW ZVltO85BEg74nFKG7vfdjXOl4v9jCB4JT77Y2I4NWRKDQ/ktJnQxEp86+tT3r1x5 BvQ28/TMCDODWf9uWgvAD8SDMyWzYCIC6nKrCMR4D/cbAXPlbRq/tFDjm3iiBrka m4TjAgpjWCRXTKQAC1Ep9ASzy1bFO16uXtUAoewVZYVLY7l/bYIwGyskwHSkwjWw x1kaY+3YrajqYSEl/uacgPePkVxJYfGmDNJhGdDq/O6qFmQslewuR4yOBUn5k5W8 8voJ1PU/hpTyios3HY4AikwjG2zsDnR2xzk4VUtDyTQjT4EBuAKQ== X-Virus-Scanned: amavisd-new at usg-ed-osssrv.wdc.com From: Alistair Francis To: qemu-devel@nongnu.org Cc: alistair23@gmail.com, eopXD , eop Chen , Frank Chang , Weiwei Li , Alistair Francis Subject: [PULL 16/25] target/riscv: rvv: Add tail agnostic for vector integer comparison instructions Date: Fri, 10 Jun 2022 14:26:46 +1000 Message-Id: <20220610042655.2021686-17-alistair.francis@opensource.wdc.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220610042655.2021686-1-alistair.francis@opensource.wdc.com> References: <20220610042655.2021686-1-alistair.francis@opensource.wdc.com> 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=216.71.153.144; envelope-from=prvs=1538de18e=alistair.francis@opensource.wdc.com; helo=esa5.hgst.iphmx.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 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_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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" X-ZM-MESSAGEID: 1654837160887100001 Content-Type: text/plain; charset="utf-8" From: eopXD Compares write mask registers, and so always operate under a tail- agnostic policy. Signed-off-by: eop Chen Reviewed-by: Frank Chang Reviewed-by: Weiwei Li Acked-by: Alistair Francis Message-Id: <165449614532.19704.7000832880482980398-9@git.sr.ht> Signed-off-by: Alistair Francis --- target/riscv/vector_helper.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c index 056c2a1c7e..a64506bf02 100644 --- a/target/riscv/vector_helper.c +++ b/target/riscv/vector_helper.c @@ -1371,6 +1371,8 @@ void HELPER(NAME)(void *vd, void *v0, void *vs1, void= *vs2, \ { \ uint32_t vm =3D vext_vm(desc); \ uint32_t vl =3D env->vl; \ + uint32_t total_elems =3D env_archcpu(env)->cfg.vlen; \ + uint32_t vta_all_1s =3D vext_vta_all_1s(desc); \ uint32_t i; \ \ for (i =3D env->vstart; i < vl; i++) { \ @@ -1382,6 +1384,13 @@ void HELPER(NAME)(void *vd, void *v0, void *vs1, voi= d *vs2, \ vext_set_elem_mask(vd, i, DO_OP(s2, s1)); \ } \ env->vstart =3D 0; \ + /* mask destination register are always tail-agnostic */ \ + /* set tail elements to 1s */ \ + if (vta_all_1s) { \ + for (; i < total_elems; i++) { \ + vext_set_elem_mask(vd, i, 1); \ + } \ + } \ } =20 GEN_VEXT_CMP_VV(vmseq_vv_b, uint8_t, H1, DO_MSEQ) @@ -1420,6 +1429,8 @@ void HELPER(NAME)(void *vd, void *v0, target_ulong s1= , void *vs2, \ { \ uint32_t vm =3D vext_vm(desc); \ uint32_t vl =3D env->vl; \ + uint32_t total_elems =3D env_archcpu(env)->cfg.vlen; \ + uint32_t vta_all_1s =3D vext_vta_all_1s(desc); \ uint32_t i; \ \ for (i =3D env->vstart; i < vl; i++) { \ @@ -1431,6 +1442,13 @@ void HELPER(NAME)(void *vd, void *v0, target_ulong s= 1, void *vs2, \ DO_OP(s2, (ETYPE)(target_long)s1)); \ } \ env->vstart =3D 0; \ + /* mask destination register are always tail-agnostic */ \ + /* set tail elements to 1s */ \ + if (vta_all_1s) { \ + for (; i < total_elems; i++) { \ + vext_set_elem_mask(vd, i, 1); \ + } \ + } \ } =20 GEN_VEXT_CMP_VX(vmseq_vx_b, uint8_t, H1, DO_MSEQ) --=20 2.36.1