Intel® Fortran Compiler Classic and Intel® Fortran Compiler Developer Guide and Reference

ID 767251
Date 7/13/2023
Public

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Document Table of Contents

VECREMAINDER Clause

General Directive Clause: Allows the compiler to vectorize (or not to vectorize) any peel or remainder loops when the original loop is vectorized.

Syntax

[NO]VECREMAINDER

If !DIR$ VECTOR ALWAYS is specified, the following occurs:

  • If VECREMAINDER is specified, the compiler vectorizes peel and remainder loops when the original main loop is vectorized.

  • If NOVECREMAINDER is specified, the compiler does not vectorize peel or remainder loops when the original main loop is vectorized.

  • If neither the VECREMAINDER or NOVECREMAINDER clause is specified, the compiler overrides efficiency heuristics of the vectorizer and it determines whether the loop can be vectorized.