FLIR: Unified intermediate layer#
Overview#
FLIR is a multi-backend unified intermediate layer that serves as the central hub for lowering Triton extensions intermediate representations (for example, Hints, Ops, and TLE) to hardware-specific dialects. When you use Hints and TLE features, FLIR feature is automatically used without any user intervention.
Position in the compilation pipeline#
The following diagram indicates the position of the FLIR in the compilation pipeline.

Core capabilities#
Capability |
Description |
|---|---|
Language Coverage |
Supports 76 Triton language primitives and 103 operators. |
Memory Access |
- Structured Memory Access: Provides a unified lowering path and implementation. |
Tensor Calculation |
NPU and DSA backend classified specializations, such as different algorithmic implementations of multivariate reductions. |
Hardware Ecosystem Support |
- Fully backend-specialized, such as expanding buffer-assisted synchronization and transmitting hardware-specific information. |