This folder contains (most of) the C++ code for the PyTorch JIT, a language

and compiler stack for executing PyTorch models portably and efficiently. To

learn more about the JIT from a user perspective, please consult our

[reference documentation](https://pytorch.org/docs/stable/jit.html) and

[tutorials](https://pytorch.org/tutorials/beginner/Intro_to_TorchScript_tutorial.html).

A brief summary of the source tree:

- `OVERVIEW.md`: High-level technical overview of the JIT.

- `frontend/`: Taking PyTorch modules in Python and translating them into the

JIT IR.

- `ir/`: Core IR abstractions.

- `runtime/`: Interpreter, graph execution, and JIT operators.

- `codegen/`: Generating efficient, hardware-specific code for JIT subgraphs.

- `serialization/`: Saving and loading modules.

- `api/`: Any user-facing C++ or Python interfaces.

- `python/`: Binding stuff into Python or accessing information from the Python

environment.

- `testing/`: Utilities and helpers for testing.

- `mobile/`: Mobile-specific implementations of runtime components.

- `passes/`: IR-to-IR passes, generally for optimization and lowering.

- `generated/`: This folder is generated by the PyTorch build, and contains

bindings for native PyTorch operators into the JIT.

**Refer** to each folder for more in-depth documentation.

Other relevant parts of the codebase not contained here:

- `aten/src/ATen/core`: contains JIT code re-used by other elements of the

runtime system (eager, mobile, etc.)