Arm64 Performance Improvements in .NET 8

.NET 8 introduces several feature enhancements and performance optimizations specifically tailored to the ARM64 architecture. One notable feature addition is the introduction of conditional selection instructions, which eliminate the need for branch instructions and result in a nearly 50% improvement in certain scenarios. Additionally, support for conditional increment, negation, and inversion instructions has been improved, resulting in more efficient code generation and better performance. The register allocator now tracks consecutive register requirements and allocates multiple consecutive registers for these types of instructions, further enhancing performance. Overall, these ARM64 performance improvements in .NET 8 enhance the architectural capabilities and provide a significant boost in performance.