Longtime Arm engineer Wilco Dijkstra has landed the SVE-optimized memcpy implementation for Glibc. Wilco explained, " Add an initial SVE memcpy implementation. Copies up to 32 bytes use SVE vectors which improves the random memcpy benchmark significantly. "
Arm SVE (and now Scalable Matrix Extensions, SME) is the next-generation SIMD with capabilities beyond Arm's Neon. SVE is aimed at better HPC and machine learning performance for AArch64. SVE supports scalable vectors, speculative vectorization, gather-load and scatter-store, and other capabilities compared to Neon.
Arm Neoverse-V1 with SVE.
The Neoverse N2 and V1 CPUs are among the first Arm CPUs with SVE -- including the recently launched Amazon Graviton3 CPUs with their Neoverse-V1 CPUs. Coincidentally I'll have up some Arm SVE compiler benchmarks on Phoronix in a few days.
Outside of the Arm SVE space, there were also some minor x86/x86_64 optimizations also merged this week into the GNU C Library. See the Glibc Git for the latest changes to this widely-used C library.