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MicroJIT (uJIT)
===============
**DISCLAIMER: Please note that this project is in early stages of development. It is very much a work in progress, it may cause your software to crash, and current performance results are likely to leave you feeling unimpressed.**
**DISCLAIMER: Please note that this project is in early stages of development. It is very much a work in progress, it may cause your software to crash, and current performance results are likely to leave you feeling underwhelmed.**
MicroJIT is a lightweight, minimalistic Ruby JIT built inside the CRuby/MRI binary.
It lazily compiles code using a Basic Block Versioning (BBV) architecture. The target use case is that of servers running
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```
chruby ruby-microjit
ruby <options>
ruby myscript.rb
```
You can dump statistics about compilation and execution by running uJIT with the `--ujit-stats` command-line option:
```
./miniruby --ujit-stats <options>
./miniruby --ujit-stats myscript.rb
```
The machine code generated for a given method can be printed by adding `puts UJIT.disasm(method(:method_name))` to a Ruby script. Note that no code will be generated if the method is not compiled.
## Source Code Organization
The uJIT source code is divided between: