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Visible to Intel only — GUID: GUID-0651BA8C-C88F-439D-AB59-A7537AD5C8C0
Visible to Intel only — GUID: GUID-0651BA8C-C88F-439D-AB59-A7537AD5C8C0
This guide contains information for version 2021.8 of the compiler.
Intel® C++ Compiler Classic (icc) is deprecated and will be removed in a oneAPI release in the second half of 2023. Intel recommends that customers transition now to using the LLVM-based Intel® oneAPI DPC++/C++ Compiler (icx) for continued Windows* and Linux* support, new language support, new language features, and optimizations. Note that starting with release 2021.7, macOS* support is limited to Mac* computers with Intel® Processors.
This document contains information about the Intel® C++ Compiler Classic (icc for Linux* and icl for Windows*) compiler and runtime environment. The Intel® C++ Compiler Classic can be found in the Intel® oneAPI HPC Toolkit, Intel® oneAPI IoT Toolkit, or as a standalone compiler. More information and specifications about Intel C/C++ compilers can be found on the Intel® oneAPI DPC++/C++ Compiler product page and in the Release Notes.
The following are some important sections of the compiler developer guide:
Compiler Setup |
Compiler Setup explains how to invoke the compiler on the command line or from within an IDE. |
OpenMP* Support |
The compiler supports many OpenMP* features, including most of OpenMP* Version TR4: Version 5.0. |
Compiler Options |
Compiler Options provides information about options you can use to affect optimization, code generation, and more. |
Intrinsics |
Intrinsics let you generate more readable code, simplify instruction scheduling, reduce debugging, access the instructions that cannot be generated using the standard constructs of the C and C++ languages, and more. |
Pragmas |
Pragmas provide the compiler with the instructions for specific tasks, such as splitting large loops into smaller ones, enabling or disabling optimization for code, or offloading computation to the target. |
Context Sensitive/F1 Help |
To use the Context Sensitive/F1 Help feature, visit the Download Documentation: Intel® Compiler (Current and Previous) page and follow the instructions provided there. |
Download Previous Versions of the Developer Guide and Reference |
Visit the Download Documentation: Intel® Compiler (Current and Previous) page to download PDF or FAR HTML versions of previous compiler documentation.
NOTE:
For the best search experience, use a Google Chrome* or Internet Explorer* browser to view your downloaded copy of the Developer Guide and Reference.
If you use Mozilla Firefox*, you may encounter an issue where the Search tab does not work. As a workaround, you can use the Contents and Index tabs or a third-party search tool to find your content. |