How RyuJIT Compiles Code
summary
RyuJIT compilation pipeline from C# down to machine code is explained, including how the open-source .NET Core / .NET 5 JIT (RyuJIT) works and where to find and add optimizations. The talk covers concrete examples of functions showing compilation stages and gives guidance for contributors who want to modify or extend RyuJIT (CoreCLR) to implement new optimizations.
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chapters (12)
- 0:00Introduction
- 5:04How RyuJIT works
- 12:30Intermediate language and compilation phases
- 18:51Inline scheduling and optimizations
- 24:10SSA form and benefits
- 27:01Common subexpression elimination
- 30:13Loops and invariant code
- 32:22Array bounds optimization
- 33:45Code generation phase
- 36:16Optimization opportunities
- 37:44Micro-optimization examples
- 39:07Conclusion and Q&A
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