RISC-V向量滑动指令在编译器中的自动生成方法OA

Although vector sliding instructions in the RISC-V V extension exhibit significant practical value in graphics processing,signal processing and other fields,automatic generation of such instruc‑tions is not supported in the existing compiler auto-vectorization frameworks,thus limiting their perfor‑mance potential.To address this issue,an auto-vectorization framework oriented to vector sliding in‑structions is proposed.Firstly,scalar loops with target characteristics can be identified in the frame‑work,which is further automatically transformed into vectorization loops containing vector sliding in‑structions.Secondly,the framework has been integrated into the GCC compiler.Kernel functions of typi‑cal applications across multiple domains are selected for testing based on the gem5 simulator.Experi‑mental results demonstrate that automatic generation of vector sliding instructions can be effectively achieved in the proposed framework.Performance comparisons indicate that the kernel functions opti‑mized with vector sliding instructions gain remarkable performance improvements compared with those of their scalar counterparts,with a maximum speedup of 20.1 and a geometric mean speedup of 8.44.