Compilation of HLL code with hardware accelerated functions

In an example implementation, a method is provided for compiling an HLL source file. The HLL source file checked for function calls to a set of hardware-accelerated functions having hardware implementations specified in a hardware library. For each HLL function call to a hardware-accelerated function, a circuit design is retrieved from the hardware library. The circuit design specifies a hardware implementation of the hardware-accelerated function. HLL interface code configured to communicate with the hardware implementation of the hardware-accelerated function is also generated. The HLL function call to the hardware-accelerated function in the HLL source file is replaced with the generated interface code. The HLL source file is compiled to generate a program executable on a processor of a programmable IC. Configuration data is generated that implements the retrieved circuit designs on the programmable circuitry of the programmable IC.