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Maxime Chevalier-Boisvert 2021-03-04 14:13:54 -05:00 • committed by Alan Wu
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@ -44,7 +44,7 @@ make -j16 test-all
## Usage
Once uJIT is built, you can either use `./miniruby` from within your build directory, or switch to the uJIT version of `ruby`
Once YJIT is built, you can either use `./miniruby` from within your build directory, or switch to the YJIT version of `ruby`
by using the `chruby` tool:
```
@ -52,17 +52,17 @@ chruby ruby-yjit
ruby myscript.rb
```
You can dump statistics about compilation and execution by running uJIT with the `--yjit-stats` command-line option:
You can dump statistics about compilation and execution by running YJIT with the `--yjit-stats` command-line option:
```
./miniruby --ujit-stats myscript.rb
./miniruby --yjit-stats myscript.rb
```
The machine code generated for a given method can be printed by adding `puts YJIT.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:
The YJIT source code is divided between:
- `yjit_asm.c`: x86 in-memory assembler we use to generate machine code
- `yjit_asm_tests.c`: tests for the in-memory assembler
- `yjit_codegen.c`: logic for translating Ruby bytecode to machine code