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([2a0e:cb01:d3:f100:3f9b:7278:8381:286b]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-43d0ac26758sm23583115e9.35.2025.03.12.08.55.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Mar 2025 08:55:49 -0700 (PDT) From: Paolo Savini To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Cc: Paolo Savini , Richard Handerson , Palmer Dabbelt , Alistair Francis , Bin Meng , Weiwei Li , Daniel Henrique Barboza , Liu Zhiwei , Helene Chelin , Nathan Egge , Max Chou , Jeremy Bennett , Craig Blackmore Subject: [PATCH 0/1 v2] [RISCV/RVV] Generate strided vector loads/stores with tcg nodes. Date: Wed, 12 Mar 2025 15:55:46 +0000 Message-ID: <20250312155547.289642-1-paolo.savini@embecosm.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::336; envelope-from=paolo.savini@embecosm.com; helo=mail-wm1-x336.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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Previous version: - PATCH v1: https://lore.kernel.org/all/20250211182056.412867-1-paolo.savini@embecosm.com/ Follwing the suggestion in the following review by Daniel Barboza: https://lore.kernel.org/all/9be2ecc4-fed3-4774-a921-259f36e23b1b@ventanamicro.com/ we simplified the emulation by tcg nodes of such a complex operation as strided loads/stores by breaking it into two separate functions. One function implements the loop that performs the main load/store operation with the supporting logic to address the vector elements with the right stride and to fill with ones the inactive elements in the case of a load. The second function implements the loop that sets to 1 the tail bytes if we are in a tail agnostic regime. Cc: Richard Handerson Cc: Palmer Dabbelt Cc: Alistair Francis Cc: Bin Meng Cc: Weiwei Li Cc: Daniel Henrique Barboza Cc: Liu Zhiwei Cc: Helene Chelin Cc: Nathan Egge Cc: Max Chou Cc: Jeremy Bennett Cc: Craig Blackmore Paolo Savini (1): [RISC-V/RVV] Generate strided vector loads/stores with tcg nodes. target/riscv/insn_trans/trans_rvv.c.inc | 323 ++++++++++++++++++++---- 1 file changed, 273 insertions(+), 50 deletions(-)