# fiopenmp, Qiopenmp

Enables recognition of OpenMP* features, such as parallel, simd, and offloading directives. This is an alternate Linux* option for compiler option qopenmp.

## Syntax

Linux: | -fiopenmp

Windows: | /Qiopenmp

## Arguments

None

## Default

OFF | If this option is not specified, OpenMP* features are not transformed in LLVM*.

## Description

This option enables recognition of OpenMP* features, such as parallel, simd, and offloading directives. This is an alternate Linux* option for compiler option qopenmp.

The -fiopenmp and /Qiopenmp options enable Intel's implementation of OpenMP* in the compiler back end. The compiler front end produces an intermediate representation that preserves the parallelism exposed by OpenMP* directives. The back end uses the exposed parallelism to do more advanced optimizations, such as SIMD vectorization.

### Note

To enable offloading to a specified GPU target, you must also specify option fopenmp-targets (Linux*) or /Qopenmp-targets (Windows).

### Note

Option -fopenmp is not the same as option -fiopenmp. Option -fopenmp will not do offloading.

Product and Performance Information
Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex. Notice revision #20201201

## IDE Equivalent

Visual Studio: DPC++ > Language > OpenMP Support

C/C++ > Language [Intel C++] > OpenMP Support

Intel® oneAPI DPC++ Compiler > Language > OpenMP Support

Intel C++ Compiler > Language > OpenMP Support

Eclipse: Intel® oneAPI DPC++ Compiler > Language > OpenMP Support

Intel C++ Compiler > Language > OpenMP Support

## Alternate Options

Linux: -qopenmp

Windows: /Qopenmp

Parent topic: Offload Compilation Options, OpenMP* Options, and Parallel Processing Options

## See Also

qopenmp, Qopenmp compiler option
fopenmp-targets, Qopenmp-targets compiler option