Intel High Level Synthesis Compiler Release Notes
Intel High Level Synthesis Compiler Release Notes
The Intel® High Level Synthesis Compiler Release Notes provide late-breaking information about the Intel® High Level Synthesis Compiler included with Intel® Quartus® Prime Design Suite Version 18.0.
New Features and Enhancements
- Starting with
Intel®
Quartus® Prime Version 18.0, the features and devices supported by the
Intel® HLS Compiler depend on what edition
of
Intel®
Quartus® Prime you have.
Intel® HLS Compiler publications now use icons to indicate content
and features that apply only to a specific edition as follows:
- Indicates that a feature or content applies only to the Intel® HLS Compiler provided with Intel® Quartus® Prime Pro Edition.
- Indicates that a feature or content applies only to the Intel® HLS Compiler provided with Intel® Quartus® Prime Standard Edition.
-
Compilations that target Intel® Stratix® 10 devices (-march=Stratix10) now take advantage of the following Intel® Stratix® 10 specific compiler optimizations and reporting:
- Fast Loop Orchestration
- HyperFlex Control Optimizations
- Reset Minimization
-
Intel® HLS Compiler now includes templated
libraries to help speed the development of your component by providing you
with FPGA-optimized code for some commonly used code. The following
Intel® HLS Compiler libraries were added in
Version18.0:
- Random Number Generator Library
- Matrix Multiplication Library
-
Added new stream interface declarations:
-
ihc::usesempty
Use this declaration when your stream packets have more than one data symbol per clock cycle. This declaration indicates the number of symbols at the end of a packet cycle that do not represent valid data.
-
ihc::firstSymbolInHighOrderBits
Use this declaration to indicate if the data symbols in your stream are in big endian order or little endian order. The default is little endian order.
-
ihc::usesempty
- Added the following new tutorials:
- best_practices/ac_datatypes
- best_practices/loop_coalesce
- best_practices/random_number_generator
- interfaces/explicit_streams_packets_empty
- interfaces/explicit_streams_ready_latency
- interfaces/overview
-
Renamed tutorials to reflect the renamed
Intel®
Quartus® Prime components:
- usability/qsys_2xclock is now usability/platform_designer_2xclock
- usability/qsys_stitching is now usability/platform_designer_stitching
Intel High Level Synthesis Compiler Prerequisites
For detailed instructions about installing Intel® Quartus® Prime software, including system requirements, prerequisites, and licensing requirements, see Intel® FPGA Software Installation and Licensing .
The Intel® HLS Compiler requires the following additional software:
C++ Compiler
Mentor Graphics® ModelSim® Software
- ModelSim® - Intel® FPGA Edition
- ModelSim® - Intel® FPGA Starter Edition
On Linux systems, ModelSim® software requires the Red Hat development tools packages. Additionally, any 32-bit versions of ModelSim® software (including those provided with Intel® Quartus® Prime) require additional 32-bit libraries. The commands to install these requirements are provided in Installing the Intel® HLS Compiler on Linux Systems.
For information about all the ModelSim® software versions that the Intel® software supports, refer to the EDA Interface Information section in the Software and Device Support Release Notes for your edition of Intel® Quartus® Prime
Known Issues and Workarounds
This section provides information about known issues that affect the Intel® High Level Synthesis Compiler Version 18.0.
| Description | Workaround |
|---|---|
|
(Windows only) Compiling a design in a directory with a long path name can result in compile failures. |
Compile the design in a directory with a short path name. |
| (Windows only) A long path for your Intel® Quartus® Prime installation directory can prevent you from successfully compiling and running the Intel® HLS Compiler tutorials and example designs. | Move the tutorials and examples to a short path name before trying to run them. |
| (Windows only) Pragmas used in templated code are not recognized. | Manually specialize the templated code. |
| (Windows only) C++ libraries are not supported. | Use C libraries where possible. For example, use printf instead of cout. |
(Windows only) When you compile your component, the compiler might
issue the following
warning:warning LNK4088: image being generated due to /FORCE option; image may not run |
Ignore this warning. The executable is expected to work correctly. |
Document Revision History for Intel HLS Compiler Version 18.0 Release Notes
| Document Version | Intel® Quartus® Prime Version | Changes |
|---|---|---|
| 2018.05.07 | 18.0 |
|