# qopt-prefetch-issue-excl-hint, Qopt-prefetch-issue-excl-hint

Supports the prefetchW instruction in Intel® microarchitecture code name Broadwell and later. This feature is only available for ifort.

## Syntax

Linux: | -qopt-prefetch-issue-excl-hint

macOS: | None

Windows: | /Qopt-prefetch-issue-excl-hint

## Arguments

None

## Default

OFF | The compiler does not support the PREFETCHW instruction for this microarchitecture.

## Description

This option supports the PREFETCHW instruction in Intel® microarchitecture code name Broadwell and later.

When you specify this option, you must also specify option [q or Q]opt-prefetch.

The prefetch instruction is merely a hint and does not affect program behavior. If executed, this instruction moves data closer to the processor and invalidates any other cached copy in anticipation of the line being written to in the future.

## IDE Equivalent

None

## Alternate Options

None

Parent topic: Advanced Optimization Options

## See Also

qopt-prefetch/Qopt-prefetch compiler option