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1. Intel® HLS Compiler Pro Edition Reference Manual
2. Compiler
3. C Language and Library Support
4. Component Interfaces
5. Component Memories (Memory Attributes)
6. Loops in Components
7. Component Concurrency
8. Arbitrary Precision Math Support
9. Component Target Frequency
10. Systems of Tasks
11. Libraries
12. Advanced Hardware Synthesis Controls
13. Intel® High Level Synthesis Compiler Pro Edition Reference Summary
A. Advanced Math Source Code Libraries
B. Supported Math Functions
C. Cyclone® V Restrictions
D. Intel® HLS Compiler Pro Edition Reference Manual Archives
E. Document Revision History of the Intel® HLS Compiler Pro Edition Reference Manual
6.1. Loop Initiation Interval (ii Pragma)
6.2. Loop-Carried Dependencies (ivdep Pragma)
6.3. Loop Coalescing (loop_coalesce Pragma)
6.4. Loop Unrolling (unroll Pragma)
6.5. Loop Concurrency (max_concurrency Pragma)
6.6. Loop Iteration Speculation (speculated_iterations Pragma)
6.7. Loop Pipelining Control (disable_loop_pipelining Pragma)
6.8. Loop Interleaving Control (max_interleaving Pragma)
6.9. Loop Fusion
11.4.1.1. Integration of an RTL Module into the HLS Pipeline
11.4.1.2. RTL Module Interfaces
11.4.1.3. RTL Reset and Clock Signals
11.4.1.4. Object Manifest File Syntax
11.4.1.5. Mapping HLS Data Types to RTL Signals
11.4.1.6. HLS Emulation Models for RTL-Based Functions
11.4.1.7. Potential Incompatibility between RTL Modules and Partial Reconfiguration
11.4.1.8. Stall-Free RTL
11.4.1.9. RTL Module Restrictions and Limitations for HLS Libraries
13.1. Intel® HLS Compiler Pro Edition i++ Command-Line Arguments
13.2. Intel® HLS Compiler Pro Edition Header Files
13.3. Intel® HLS Compiler Pro Edition Compiler-Defined Preprocessor Macros
13.4. Intel® HLS Compiler Pro Edition Keywords
13.5. Intel® HLS Compiler Pro Edition Simulation API (Testbench Only)
13.6. Intel® HLS Compiler Pro Edition Component Memory Attributes
13.7. Intel® HLS Compiler Pro Edition Loop Pragmas
13.8. Intel® HLS Compiler Pro Edition Scope Pragmas
13.9. Intel® HLS Compiler Pro Edition Component Attributes
13.10. Intel® HLS Compiler Pro Edition Component Default Interfaces
13.11. Intel® HLS Compiler Pro Edition Component Invocation Interface Control Attributes
13.12. Intel® HLS Compiler Pro Edition Component Macros
13.13. Intel® HLS Compiler Pro Edition Systems of Tasks API
13.14. Intel® HLS Compiler Pro Edition Pipes API
13.15. Intel® HLS Compiler Pro Edition Streaming Input Interfaces
13.16. Intel® HLS Compiler Pro Edition Streaming Output Interfaces
13.17. Intel® HLS Compiler Pro Edition Memory-Mapped Interfaces
13.18. Intel® HLS Compiler Pro Edition Load-Store Unit Control
13.19. Intel® HLS Compiler Pro Edition Arbitrary Precision Data Types
B.1. Math Functions Provided by the math.h Header File
B.2. Math Functions Provided by the extendedmath.h Header File
B.3. Math Functions Provided by the ac_fixed_math.h Header File
B.4. Math Functions Provided by the hls_float.h Header File
B.5. Math Functions Provided by the hls_float_math.h Header File
B.6. Default Rounding Schemes and Subnormal Number Support
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13.13.1. ihc::stream Class
Template Object or Parameter | Description |
---|---|
ihc::stream | Streaming interface to the component or task function. |
ihc::buffer | Specifies the capacity (in words) of the FIFO buffer on the input data that associates with the stream. |
ihc::usesPackets | Exposes the startofpacket and endofpacket sideband signals on the stream interface. |
ihc::stream Template Object
- Syntax
- ihc::stream<datatype, template arguments >
- Valid Values
- Any trivially copyable C++ data type.
- Default Value
- N/A
- Description
-
Streaming interface to the component or task.
The width of the stream data bus is equal to a width of sizeof(datatype).
ihc::buffer Template Parameter
- Syntax
- ihc::buffer<value>
- Valid Values
- Non-negative integer value.
- Default Value
- 0
- Description
- The capacity, in words, of the FIFO buffer on the input data that associates with the stream.
ihc::usesPackets Template Parameter
- Syntax
- ihc::usesPackets<value>
- Valid Values
- true or false
- Default Value
- false
- Description
- Exposes the startofpacket and endofpacket sideband signals on the stream interface, which can be accessed by the packet based reads/writes.
Intel® HLS Compiler System of Tasks Streaming Interface stream Function APIs
Function API | Description |
---|---|
T read() | Blocking read call to be used from within the component or task |
T read(bool& sop, bool& eop) | Available only if usesPackets<true> is set. Blocking read with out-of-band startofpacket and endofpacket signals. |
T tryRead(bool &success) | Non-blocking read call to be used from within the component or task. The success bool is set to true if the read was valid. |
T tryRead(bool& success, bool& sop, bool& eop) | Available only if usesPackets<true> is set. Non-blocking read with out-of-band startofpacket and endofpacket signals. |
void write(T data) | Blocking write call from the component or task. |
void write(T data, bool sop, bool eop) | Available only if usesPackets<true> is set. Blocking write with out-of-band startofpacket and endofpacket signals. |
bool tryWrite(T data) | Non-blocking write call from the component or task. The return value represents whether the write was successful. |
bool tryWrite(T data, bool sop, bool eop) | Available only if usesPackets<true> is set. Non-blocking write with out-of-band startofpacket and endofpacket signals.The return value represents whether the write was successful. |