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

ID 767253
Date 9/08/2022
Public

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Document Table of Contents

fvec-peel-loops, Qvec-peel-loops

Enables peel loop vectorization.

Syntax

Linux:

-fvec-peel-loops

-fno-vec-peel-loops

Windows:

/Qvec-peel-loops

/Qvec-peel-loops-

Arguments

None

Default

-fno-vec-peel-loops
or /Qvec-peel-loops-

No peel loop vectorization occurs.

Description

This option enables vectorization of peeling loops created during loop vectorization. It causes the compiler to perform additional steps to vectorize a peel loop that was created to improve alignment of memory references in the main vectorized loop.

The peel loop can be vectorized only when the masked mode of vectorization is enabled by specifying option -fvec-with-mask or /Qvec-with-mask.

The vectorization of a peel loop cannot be enforced because the compiler uses the cost model to determine whether it should be done.

IDE Equivalent
None
Alternate Options

None