Intel® oneAPI DPC++/C++ Compiler Developer Guide and Reference

ID 767253
Date 3/22/2024
Public

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Document Table of Contents

qopenmp-simd, Qopenmp-simd

Enables or disables OpenMP* SIMD compilation.

Syntax

Linux:

-qopenmp-simd

-qno-openmp-simd

Windows:

/Qopenmp-simd

/Qopenmp-simd-

Arguments

None

Default

-qno-openmp-simd or /Qopenmp-simd-

OpenMP* SIMD compilation is disabled.

Description

This option enables or disables OpenMP* SIMD compilation.

You can use this option if you want to enable or disable the SIMD support with no impact on other OpenMP features. In this case, no OpenMP runtime library is needed to link and the compiler does not need to generate OpenMP runtime initialization code.

When you specify [q or Q]openmp, it implies [q or Q]openmp-simd.

If you specify this option with the [q or Q]openmp option, it can impact other OpenMP features.

Option -qopenmp-simd is equivalent to option -fiopenmp-simd; option /Qopenmp-simd is equivalent to option /Qiopenmp-simd.

NOTE:

Advanced users who prefer to use OpenMP* as it is implemented by the LLVM community, can get most of that functionality by using options -fopenmp and -fopenmp-simd.

IDE Equivalent

None

Alternate Options

Linux: -fiopenmp-simd

Windows: /Qiopenmp-simd

Example

The lines in the following example are equivalent to specifying only [q or Q]openmp-simd. In this case, only SIMD support is provided, the OpenMP* library is not linked, and only the omp pragmas related to SIMD are processed:

Linux

-qno-openmp -qopenmp-simd   

Windows

/Qopenmp- /Qopenmp-simd     

In the following example, SIMD support is provided, the OpenMP library is linked, and OpenMP runtime initialization code is generated:

Linux

-qopenmp -qopenmp-simd       

Windows

/Qopenmp /Qopenmp-simd       

See Also