LLVM-JVM

Code for Functional Bytecode Interpreter (Proof-of-Concept) has been moved here: https://github.com/LouisJenkinsCS/Functional-JVM-Bytecode-Interpreter

LLVM-JVM is an attempt at creating a Java Virtual Machine with Just-In-Time compilation that uses LLVM as the backend, similar to Azul System's. This project, however, is an educational one and likely will never be production-ready. This project has been funded by Bloomsburg University's Professional Experience Grant (PEG).

Note

Warning: The code is a complete and utter mess! You've been warned!

LLVM-JVM uses a ripped and modified version of MateVM's runtime, while supplying its own frontend to LLVM. As such, everything contained in the 'MateVMRuntime' folder is code that belongs to the original authors, and I do not take credit for anything other than the modest changes I make, if any.

Why not just fork the MateVM project?

The MateVM project has been inactive for ~5 years, and considering that I would need to strip a lot of it away, such as Hoopl and Harpy, I would just take the best parts of them and give proper attribution. This not only saves me considerable time, which is something I have very little of, but also allows me to have access to the issue-tracker as well as other things.

Progress

Note: the criteria for progress is bars minimum, such as basic integer arithmetic and if-else statements. If it is checked it does not mean support for all of it, just that the ground work is done and can easily be extended on.

• Basic Arithmetic
  • Integer
  • Float
  • Double
  • Long
• Basic Control Flow
  • Loops
  • Conditionals
• LLVM optimization passes
• Global Variables
  • Static Fields
  • Instance Fields
• Dynamic ClassLoading
  • JIT at Runtime
• Garbage Collection
  • Boehms

Building

Requirements:

1. LLVM w/ llvm-config
2. Haskell
3. Java7+ (for GUI)

To build, run 'cabal install' and 'ghc Main.hs -o Main.exe', then 'java -jar GUI/llvm-jvm-frontend.jar' if you desire the GUI.