JIT and AOT in the CLR: Execution Strategies and Tiered Compilation

Explore the intricacies of Just-In-Time (JIT) execution and Ahead-Of-Time (AOT) precompilation in the Common Language Runtime (CLR) with Mei-Chin Tsai. Delve into the unique operational aspects of the CLR compared to the Java Virtual Machine (JVM), examining the motivations behind their divergent approaches. Gain insights into the recent introduction of tiered compilation in the CLR, a step towards the Java HotSpot VM model. Discover the CLR's design philosophy, AOT technology decision points, and the evolution from first-generation NGEN to second-generation CrossGen. Analyze startup behavior, tiered compilation heuristics, and future JIT developments, including the experimental CoreRT project. This 50-minute talk provides a comprehensive overview of CLR's compilation strategies and their impact on .NET development.