Xilinx, Inc.
Function calls in high level synthesis

Abstract:

A method of high level synthesis may include detecting in an application, using computer hardware, a first function including a first call site for a second function and a second call site for the second function, determining, using the computer hardware, that the first call site and the second call site each pass different data to the second function and each receive different return data from the second function, and generating, using the computer hardware, a circuit design from the application including a circuit block implementing the second function and multiplexer circuitry. The multiplexer circuitry may be configured to coordinate passing of data to the circuit block from a first source circuit corresponding to the first call site and a second source circuit corresponding to the second call site, with handshake signals exchanged between the circuit block, the first source circuit, and the second source circuit.