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Version
- GraalVM for JDK 23 (Latest)
- GraalVM for JDK 24 (Early Access)
- GraalVM for JDK 21
- GraalVM for JDK 17
- Archives
- Dev Build
- Truffle Language Implementation Framework
- Truffle Branches Instrumentation
- Dynamic Object Model
- Static Object Model
- Host Optimization for Interpreter Code
- Truffle Approach to Function Inlining
- Profiling Truffle Interpreters
- Truffle Interop 2.0
- Language Implementations
- Implementing a New Language with Truffle
- Truffle Languages and Instruments Migration to Java Modules
- Truffle Native Function Interface
- Optimizing Truffle Interpreters
- Options
- On-Stack Replacement
- Truffle Strings Guide
- Specialization Histogram
- Testing DSL Specializations
- Polyglot API Based TCK
- Truffle Approach to the Compilation Queue
- Truffle Library Guide
- Truffle AOT Overview
- Truffle AOT Compilation
- Auxiliary Engine Caching
- Truffle Language Safepoint Tutorial
- Monomorphization
- Splitting Algorithm
- Monomorphization Use Cases
- Reporting Polymorphic Specializations to Runtime
This documentation is for the unreleased GraalVM version.Download Early Access Builds from GitHub.
Monomorphization
Truffle has an automatic approach to monomorphization (also known as “splitting”). For more information about the benefits of monomorphization, continue reading to Monomorphization Use Cases.
It is controlled by the Splitting engine option and is on by default.
Adding --engine.Splitting=false to your command line will disable it.
The heuristic relies on information from the language implementation to guide the decisions. To find out more about how to use the new approach in your language implementation, refer to the Reporting Polymorphism guide.
For more details on how the new approach works, see the Splitting guide.