Xilinx Intermediate Representation (XIR) is a graph-based intermediate representation of the AI algorithms which is designed for compilation and efficient deployment of the DPU on the FPGA platform. If you are an advanced user, you can apply whole application acceleration to allow the FPGA to be used to its maximum potential by extending the XIR to support customized IPs in the Vitis AI flow. It is the current foundation for the Vitis AI quantizer, compiler, runtime, and other tools.