This folder contains generated sources for the lazy torchscript backend.

The main input file that drives which operators get codegen support for torchscript backend is ../../../../aten/src/ATen/native/ts_native_functions.yaml

The code generator lives at torchgen/gen_lazy_tensor.py.

It is called automatically by the torch autograd codegen (tools/setup_helpers/generate_code.py) as a part of the build process in OSS builds (CMake/Bazel) and Buck.

External backends (e.g. torch/xla) call gen_lazy_tensor.py directly, and feed it command line args indicating where the output files should go.

For more information on codegen, see these resources:

• Info about lazy tensor codegen: gen_lazy_tensor.py docs
• Lazy TorchScript backend native functions: ts_native_functions.yaml
• Source of truth for native func definitions ATen native_functions.yaml
• Info about native functions ATen nativefunc README.md