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[114.35.142.126]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fc0bc5aa6esm74903495ad.299.2024.07.17.06.39.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 17 Jul 2024 06:39:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; t=1721223597; x=1721828397; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Z6Ehnl/PC6i+F6ruu+0LWnyhe2hlKO/B5I8PcWhvJ30=; b=WgiDzTO3lA8bwV4C5/rbaL8uK6neHuEvI99B9Uvy2dxQ+ec6GiVdTbFgCzmYkFVpJM Kwfddj3LyozTTJyWEiZrZ5M7QQLq3BHCx65z8JrnfLR9g2fHaDoR8K1pR1WKDpALPBnv 6XAviYUcB0Yqn4jlnM4/Ce8sTteyPpGznBSvxR5aiarKR2vhLQntEV9dM9BfKqvw1F/h eEREntaWO3+f+vHx62QSiPMlg0iCbOYO5nF7ZSEotihsiThs7ZWHHGiSeUKxGyMUET9w flwdfF5lUvQS+kAkt6obUrQwpwkKhydZmy4YX2pR8aCgBJ1rKKaHgKCh5NP6fyW9yonI 7P+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721223597; x=1721828397; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Z6Ehnl/PC6i+F6ruu+0LWnyhe2hlKO/B5I8PcWhvJ30=; b=K+hFCiW8wYYBOXB12ajZqsYetw2Wb6X4NEAOuIMtlqkZpmqLNS5uHy0gbcUl6+CBTc I1BoDRTTMPVwR4ZoDNaIJXfz1bROKqBPQ2RUr2UxIy0wEurRP7CAC7L9geHlOWEghJBq ZxHDcR3HiYQczFQXLvefTyvCeum1jdBFo6cD+XBy+CE86DPv6Y3iA8MpcG5md8BGcFca YRVFtSG9kW4tc+nZgG37hkHah/U+/bkNPp2ALG239WLTXBJHkMD6brbBVtbcZainqcdf S7P+IBy+QpJg+/Cn/lbYs4TvOM7qot5Rww+CLT7DLD7Cb2ItIxf0nRxAlGorJ2cMNyWw 7/BQ== X-Gm-Message-State: AOJu0YxZYu3OR3xp8WP+oLeDJJ23CNoq4Mma18AyusYC4vwxappLR+5h n8eVmdkw+sGXv89/bWo1kTMGWb7S55kCVOzXOJd1KWUM4mt+X7LdPrKe5Oh/PJLXeNRUSsO+10T 6d1vgCib+xIBj0u4vMDtyAItjZ3Zhj0mW0R9AMBi7ZyUgxyGhdWvKeQpkx5avhS0xeoqpvE7+Ei kwgx0IAiLsVjtCqhdyZvo5EHZkpDA/sbfXnINAEA== X-Google-Smtp-Source: AGHT+IGjRLPU/NirqcygJsnHY63Eon2tLPCacB2JY4snTGbeP50DBiB2/Q1kbCiRn6LIwIDFXYoLRw== X-Received: by 2002:a17:903:1211:b0:1f6:fcd9:5b86 with SMTP id d9443c01a7336-1fc4e121a48mr13418155ad.12.1721223597024; Wed, 17 Jul 2024 06:39:57 -0700 (PDT) From: Max Chou To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Cc: Palmer Dabbelt , Alistair Francis , Bin Meng , Weiwei Li , Daniel Henrique Barboza , Liu Zhiwei , richard.henderson@linaro.org, Max Chou Subject: [RFC PATCH v5 4/5] target/riscv: rvv: Provide group continuous ld/st flow for unit-stride ld/st instructions Date: Wed, 17 Jul 2024 21:39:35 +0800 Message-Id: <20240717133936.713642-5-max.chou@sifive.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240717133936.713642-1-max.chou@sifive.com> References: <20240717133936.713642-1-max.chou@sifive.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=2607:f8b0:4864:20::62c; envelope-from=max.chou@sifive.com; helo=mail-pl1-x62c.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 @sifive.com) X-ZM-MESSAGEID: 1721223681078116600 Content-Type: text/plain; charset="utf-8" The vector unmasked unit-stride and whole register load/store instructions will load/store continuous memory. If the endian of both the host and guest architecture are the same, then we can group the element load/store to load/store more data at a time. Signed-off-by: Max Chou --- target/riscv/vector_helper.c | 72 +++++++++++++++++++++++++++++------- 1 file changed, 58 insertions(+), 14 deletions(-) diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c index 5343a08e6ad..2e675b4220c 100644 --- a/target/riscv/vector_helper.c +++ b/target/riscv/vector_helper.c @@ -188,6 +188,40 @@ GEN_VEXT_ST_ELEM(ste_h, uint16_t, H2, stw) GEN_VEXT_ST_ELEM(ste_w, uint32_t, H4, stl) GEN_VEXT_ST_ELEM(ste_d, uint64_t, H8, stq) =20 +static inline QEMU_ALWAYS_INLINE void +vext_continus_ldst_tlb(CPURISCVState *env, vext_ldst_elem_fn_tlb *ldst_tlb, + void *vd, uint32_t evl, target_ulong addr, + uint32_t reg_start, uintptr_t ra, uint32_t esz, + bool is_load) +{ + uint32_t i; + for (i =3D env->vstart; i < evl; env->vstart =3D ++i, addr +=3D esz) { + ldst_tlb(env, adjust_addr(env, addr), i * esz, vd, ra); + } +} + +static inline QEMU_ALWAYS_INLINE void +vext_continus_ldst_host(CPURISCVState *env, vext_ldst_elem_fn_host *ldst_h= ost, + void *vd, uint32_t evl, uint32_t reg_start, void *= host, + uint32_t esz, bool is_load) +{ +#if TARGET_BIG_ENDIAN !=3D HOST_BIG_ENDIAN + for (; reg_start < evl; reg_start++, host +=3D esz) { + uint32_t byte_off =3D reg_start * esz; + ldst_host(vd, byte_off, host); + } +#else + uint32_t byte_offset =3D reg_start * esz; + uint32_t size =3D (evl - reg_start) * esz; + + if (is_load) { + memcpy(vd + byte_offset, host, size); + } else { + memcpy(host, vd + byte_offset, size); + } +#endif +} + static void vext_set_tail_elems_1s(target_ulong vl, void *vd, uint32_t desc, uint32_t nf, uint32_t esz, uint32_t max_elems) @@ -299,24 +333,34 @@ vext_page_ldst_us(CPURISCVState *env, void *vd, targe= t_ulong addr, mmu_index, true, &host, ra); =20 if (host && flags =3D=3D 0) { - for (i =3D env->vstart; i < evl; ++i) { - k =3D 0; - while (k < nf) { - ldst_host(vd, (i + k * max_elems) << log2_esz, host); - host +=3D esz; - k++; + if (nf =3D=3D 1) { + vext_continus_ldst_host(env, ldst_host, vd, evl, env->vstart, = host, + esz, is_load); + } else { + for (i =3D env->vstart; i < evl; ++i) { + k =3D 0; + while (k < nf) { + ldst_host(vd, (i + k * max_elems) << log2_esz, host); + host +=3D esz; + k++; + } } } env->vstart +=3D elems; } else { - /* load bytes from guest memory */ - for (i =3D env->vstart; i < evl; env->vstart =3D ++i) { - k =3D 0; - while (k < nf) { - ldst_tlb(env, adjust_addr(env, addr), - (i + k * max_elems) << log2_esz, vd, ra); - addr +=3D esz; - k++; + if (nf =3D=3D 1) { + vext_continus_ldst_tlb(env, ldst_tlb, vd, evl, addr, env->vsta= rt, + ra, esz, is_load); + } else { + /* load bytes from guest memory */ + for (i =3D env->vstart; i < evl; env->vstart =3D ++i) { + k =3D 0; + while (k < nf) { + ldst_tlb(env, adjust_addr(env, addr), + (i + k * max_elems) << log2_esz, vd, ra); + addr +=3D esz; + k++; + } } } } --=20 2.34.1