| .. _torch.compiler_ir: |
| |
| IRs |
| =============== |
| |
| PyTorch 2.0 offers two set of IRs for backends to interface with: Core Aten IR and Prims IR. |
| |
| Core Aten IR |
| -------------------- |
| |
| Core aten ops is the core subset of aten operators that can be used to compose other operators. |
| Core aten IR is fully functional, and there is no `inplace` or `_out` variants in this opset. |
| In contrast to Prims IR, core aten ops reuses the existing aten ops in "native_functions.yaml", |
| and it doesn't further decompose ops into explicit type promotion and broadcasting ops. |
| This opset is designed to serve as the functional IR to interface with backends. |
| |
| .. warning:: |
| This opset is still under active development, more ops will be added in the future. |
| |
| .. csv-table:: |
| :file: ../build/ir/aten_ops.csv |
| :widths: auto |
| :header-rows: 1 |
| |
| Prims IR |
| ----------- |
| |
| Prims IR is a set of primitive operators that can be used to compose other operators. |
| Prims IR is a lower level opset than core aten IR, and it further decomposes ops into explicit |
| type promotion and broadcasting ops: prims.convert_element_type and prims.broadcast_in_dim. |
| This opset is designed to interface with compiler backends. |
| |
| .. warning:: |
| This opset is still under active development, more ops will be added in the future. |
| |
| .. csv-table:: |
| :file: ../build/ir/prims_ops.csv |
| :widths: auto |
| :header-rows: 1 |
