Intel® C++ Compiler for macOS* 19.1 Release Notes for Parallel Studio XE 2020
Please see the licenses included in the distribution as well as the Disclaimer and Legal Information section of these release notes for details. Please see the following links for information on this release of the Intel® C++ Compiler 19.1
- Change History
- System Requirements
- How to Use
- Intel-provided debug solutions
- Redistributable Libraries
- Technical Support
- New and Changed Features in 19.1
- Parallel STL for parallel and vector execution of the C++ STL
- Support removed
- Known Limitations
- Disclaimer and Legal Information
This section highlights important from the previous product version and changes in product updates.
Changes in Update 4 (New in Intel® C++ Compiler 19.1.3)
- The Intel® Compilers contain functional and security updates.
- The Intel® C++ Compiler includes intrinsics for Intel® Advanced Matrix Extensions (Intel® AMX).
Changes in update 3
- Not applicable for macOS
Note: Intel® Parallel Studio XE 2020 Update 3 is available for the Intel® Parallel Studio XE 2020 Composer Edition for C++ Linux*.
This is a Linux-only release: there is no Update 3 release for either Windows* or macOS* operating systems.
In addition, it is only a Composer Edition release: there is no Update 3 release for either Professional or Cluster Editions of Intel® Parallel Studio XE 2020.
There is no update to the Intel® C++ Compilers Redistributable Libraries. The Update 2 versions of these libraries are compatible and should be used.
There is no update for the Intel® Parallel Studio XE Runtime 2020 YUM* and APT* repository packages. Continue to use the Update 2 packages of this runtime.
Changes in update 2 (New in Intel® C++ Compiler 19.1.2)
- Corrections to reported problems
Changes in update 1 (New in Intel® C++ Compiler 19.1.1)
- Corrections to reported problems.
- Support for Xcode* 11.3
Changes since Intel® C++ Compiler 19.0 (New in Intel® C++ Compiler 19.1)
- New C++20 features supported
- New compiler option -m[no-]branches-within-32B-boundaries
- New features from OpenMP 5.0*
- A 64-bit Intel®-based Apple* Mac* system host
- 2GB RAM minimum, 4GB RAM recommended
- 14GB free disk space
- One of the following combinations of mac OS*, Xcode* and the Xcode SDK:
- macOS* 10.15 and Xcode* 11.x
- macOS* 10.14 and Xcode*10.x
- If doing command line development, the Command Line Tools component of Xcode* is required
Note: Advanced optimization options or very large programs may require additional resources such as memory or disk space.
Parallel Studio XE 2020 : Getting Started with the Intel® C++ Compiler 19.1 for mac OS* at <install_dir>/documentation_2020/en/compiler_c/ps2020/get_started_mc.htm contains information on how to use the Intel® C++ Compiler from the command line and from Xcode*.
Product documentation is linked from <install-dir>/documentation_2020/en/compiler_c/ps2020/get_started_mc.htm. Full documentation for all tool components is available at the Intel® Parallel Studio XE Support page.
Offline core documentation is removed from the Intel® Parallel Studio XE installed image. The core documentation for the components of Intel® Parallel Studio XE are available at the Intel® Software Documentation Library for viewing online. You can also download an offline version of the documentation from the Intel® Software Development Products Registration Center: Product List > Intel® Parallel Studio XE Documentation.
Please use the instructions from this article to add Intel® Compiler documentation to your local machine.
- Intel®-provided debug solutions are based GNU* GDB. Please see Intel® Parallel Studio XE 2020 Composer Edition C++ - Debug Solutions Release Notes further information.
Product samples are now available online at Intel® Software Product Samples and Tutorials
Refer to the Redistributable Libraries for Intel® Parallel Studio XE for more information.
If you did not register your compiler during installation, please do so at the Intel® Software Development Products Registration Center at http://registrationcenter.intel.com. Registration entitles you to free technical support, product updates and upgrades for the duration of the support term.
For information about how to find Technical Support, Product Updates, User Forums, FAQs, tips and tricks, and other support information, please visit: http://www.intel.com/software/products/support/
Note: If your distributor provides technical support for this product, please contact them for support rather than Intel.
This option is supported in versions 19.0 update 8 of the compiler and above. The details about this option can be found in the Intel® C++ Compiler 19.1 Developer Guide and Reference here.
To find more information, see https://www.intel.com/content/dam/support/us/en/documents/processors/mitigations-jump-conditional-code-erratum.pdf
- IF clause on SIMD directive
- NONTEMPORAL clause on SIMD directive
The Intel® C++ Compiler 19.1 supports the following features under the /Qstd=c++20 (Windows*) or -std=c++20 (Linux*/OS X*) options:
- std::is_constant_evaluated and __builtin_is_constant_evaluated
Intel(R) C++ Compiler is installed with Parallel STL, an implementation of the C++ standard library algorithms with support for execution policies.
- More algorithms support parallel and vector execution policies: find_first_of, is_heap, is_heap_until, replace, replace_if.
- More algorithms support vector execution policies: remove, remove_if.
- More algorithms support parallel execution policies: partial_sort.
To learn more, please refer to article https://software.intel.com/en-us/get-started-with-pstl
The following compiler options related to Loop Profiler are deprecated and will be removed in future compilers
Intel® Cilk™ Plus support is removed in 19.1
This includes the "#pragma simd" directive. Users should replace with the OpenMP SIMD pragma "#pragma omp simd" and it's clauses. Remember to add compiler option "-qopenmp-simd" or "-qopenmp". This pragma will be removed in future releases.
Tachyon removed from samples
Xcode* 10 and Xcode* 11, new build system not supported
The Xcode 10 Beta introduced a “New Build System (Default)” which currently do not support custom compilers.You will see the error "no rule to process file" when building an Intel C++ Compiler project within XCode 10 and Xcode 11. To use Intel compilers, switch to “Legacy Build System” in Project Settings.
unseq and par_unseq policies only have effect with compilers that support '#pragma omp simd' or '#pragma simd. Parallel and vector execution is only supported for a subset of algorithms if random access iterators are provided, while for the rest execution will remain serial. Depending on a compiler, zip_iterator may not work with unseq and par_unseq policies.
Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.
Notice revision #20110804
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Product and Performance Information
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