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Brainfly

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A high-performance Brainfuck JIT and AOT compiler built on top of C# type system

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# Brainfly

A Brainf**k JIT and AOT compiler built on top of C# type system.

Leveraged .NET generic type system and abstract static interface methods to achieve great performance.

See [Introduction](Intro.md) for details.

## Build

```bash
dotnet build -c Release
```

## Usage

```bash
dotnet run -c Release -- build <memory_size> <file>
dotnet run -c Release -- run <memory_size> <file>
dotnet run -c Release -- bench <memory_size> <file>
```

For example,

```bash
dotnet run -c Release -- build 1024 a.bf # produce a self-contained a.cs so that you can run it directly with .NET or build it with .NET NativeAOT
dotnet run -c Release -- run 1024 a.bf # running directly from source file a.bf
dotnet run -c Release -- bench 1024 a.bf # benchmark directly from source file a.bf
```

## Benchmarks

### Mandelbrot

| Name | Time (ms) | Rank | Ratio | Binary size | Description |
| --- | --- | --- | --- | --- | --- |
| Interpreter in C | 4,874.6587 | 5 | 5.59 | N/A | A Brainfuck interpreter written in C |
| GCC | 901.0225 | 3 | 1.03 | **52 KB** | Translate to C, then build with `gcc -O3 -march=native` |
| Clang | 881.7177 | 2 | 1.01 | 56 KB | Translate to C, then build with `clang -O3 -march=native` |
| .NET JIT | 925.1596 | 4 | 1.06 | N/A | Use JIT to generate the type and then instantiate it for running |
| .NET AOT | **872.2287** | 1 | 1.00 | 1732 KB | Use .NET NativeAOT to build the exe that runs the compiled type directly |

Brainfly

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