Device Family: Cyclone® V SE, Cyclone® V ST, Cyclone® V SX

Type: Answers

Area: Embedded


Version Found: v14.1
Version Fixed: v17.0
Bug ID: FB: 403727;

Compiler Error: Unrecognized function call: in OpenCL compilation with custom RTL code with Cyclone V Soc BSP

Description

Due to a problem in the Quartus® Prime software and Intel® FPGA SDK for OpenCL™ version 14.1 and later for  Cyclone V SoC platform, when integrating a custom RTL module into the OpenCL design, compile may fail with Cyclone® V SoC platform only for error below:-

 

Compiler Error: Unrecognized function call: acl.external.iowr.i1.si32.p4si32

Workaround / Fix

This problem has been fixed in the Quartus® Prime software and Intel® FPGA SDK for OpenCL™ version 17.0 for the Cyclone V SoC platform.

As a workaround, user can open up the cyclonev_tsm.xml file and add in the code below, this code is also available in the  Stratix® V platform.

 

  <!-- acl.external.iord callinst -->

  <group acl_intrinsic="acl.external.iord">

    <type base="any">

      <style name="default">

        <max-latency value="1"/>

        <min-capacity value="1"/>

      </style>

    </type>

  </group>

 

  <!-- acl.external.iowr callinst -->

  <group acl_intrinsic="acl.external.iowr">

    <type base="any">

      <style name="default">

        <max-latency value="1"/>

        <min-capacity value="1"/>

      </style>

    </type>

  </group>