Developer Reference

Migrating OpenCL™ FPGA Designs to SYCL*

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ID 767849
Date 7/13/2023
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Document Table of Contents
Document Table of Contents x
Migrating OpenCL™ FPGA Designs to SYCL* FPGA Design Flow Modify Your Design Flags, Attributes, Directives, and Extensions Histogram Design Example Walkthrough Additional Information Document Revision History for Migrating OpenCL FPGA Designs to SYCL*
Migrating OpenCL™ FPGA Designs to SYCL* x
Overview Prerequisites
Modify Your Design x
Basic Modifications Advanced Modifications
Basic Modifications x
Host Code Modification Device Code Modification
Advanced Modifications x
Host Code Modification Device Code Modification
Device Code Modification x
C++ Features in Device Code
Flags, Attributes, Directives, and Extensions x
General Information Flags FPGA Board-Specific Flags Compiler Flags Optimization Flags Memory Attributes Loop Directives Floating Point Optimizations Kernel Attributes Intra-kernel Registered Assignment Function Channels/Pipes APIs LSU Attributes
Histogram Design Example Walkthrough x
OpenCL Sample Code SYCL Sample Code SYCL Sample Code With Explicit Data Movement
Document Revision History for Migrating OpenCL FPGA Designs to SYCL* x
Notices and Disclaimers
Migrating OpenCL™ FPGA Designs to SYCL*
FPGA Design Flow
Modify Your Design
Flags, Attributes, Directives, and Extensions
Histogram Design Example Walkthrough
Additional Information
Document Revision History for Migrating OpenCL FPGA Designs to SYCL*

Floating Point Optimizations

The following table list the float-point pragmas supported in OpenCL and their equivalents in SYCL*:

OpenCL SYCL Description
#pragma clang fp contract(off|fast) #pragma clang fp contract(off|fast|on) Controls whether the compiler can skip intermediate rounding and conversions mainly between double-precision arithmetic operations.
#pragma clang fp reassociate(on|off) #pragma clang fp reassociate(on|off) Controls the relaxing of the order of floating-point arithmetic operations within the code block to which this pragma is applied.
Parent topic: Flags, Attributes, Directives, and Extensions
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