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

ID 767253
Date 11/07/2023
Public

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Document Table of Contents

vec, Qvec

Enables or disables loop vectorization.

Syntax

Linux:

-vec

-no-vec

Windows:

/Qvec

/Qvec-

Arguments

None

Default

-vec
or /Qvec

Loop vectorization is enabled if option O2 or higher is in effect.

Description

This option enables or disables loop vectorization.

To disable loop vectorization, specify -no-vec (Linux*) or /Qvec- (Windows*).

NOTE:

Using this option enables vectorization at default optimization levels for both Intel® microprocessors and non-Intel microprocessors. Vectorization may call library routines that can result in additional performance gain on Intel microprocessors than on non-Intel microprocessors.

NOTE:

This option only applies to host compilation. When offloading is enabled, it does not impact device-specific compilation.

IDE Equivalent

None

Alternate Options

None