What is new in LLVM 15?
LLVM 15.0.0 was released on September 6, followed by a series of minor bug-fixing releases. Other than the regular architecture enablement work, Arm contributed several pieces of functionality. This includes support for frame chains in AArch32, SVE whole-loop scalable auto-vectorization and C/C++ operator support for ACLE types. The release also benefits from numerous performance improvements, both for A-profile and M-profile cores.
Architecture and IP support
LLVM 15 expands support for the A-profile architecture with the new Armv8.8-A and Armv9.3-A extensions. The most relevant change from a toolchain point of view is the addition of new instructions to improve the performance and portability of memcpy() and memset(). These can now be accessed through a series of ACLE intrinsics of the form __builtin_arm_mops*(). For more information on the full extensions, refer to the Arm A-Profile Architecture Developments 2021 blog post.
Another addition worth noting is support for the Arm Cortex-M85 processor. This is the highest-performance M-profile CPU to date, and is also the first CPU to allow the PACBTI Security Extension (optional). More info on the Cortex-M85 is available here. You can build for this CPU by adding -mcpu=cortex-m85 to your command line.
Related Semiconductor IP
- RISC-V CPU IP
- AES GCM IP Core
- High Speed Ethernet Quad 10G to 100G PCS
- High Speed Ethernet Gen-2 Quad 100G PCS IP
- High Speed Ethernet 4/2/1-Lane 100G PCS
Related Blogs
- What is OTA in automotive? Over the air updates explained.
- AI Is Driving a New Frontier in Chip Design
- What Is Viral in CXL 3.0?
- What is the latency of TICO technology?
Latest Blogs
- Why Choose Hard IP for Embedded FPGA in Aerospace and Defense Applications
- Migrating the CPU IP Development from MIPS to RISC-V Instruction Set Architecture
- Quintauris: Accelerating RISC-V Innovation for next-gen Hardware
- Say Goodbye to Limits and Hello to Freedom of Scalability in the MIPS P8700
- Why is Hard IP a Better Solution for Embedded FPGA (eFPGA) Technology?