prefetch, Qprefetch

Enables prefetch insertion optimization.

IDE Equivalent

Windows: None

Linux: Optimization > Enable Prefetch Insertion

Mac OS: Optimization > Enable Prefetch Insertion

Architectures

IA-64 architecture

Syntax

Linux: -prefetch
-no-prefetch
Mac OS: None
Windows:  /Qprefetch
/Qprefetch-

Arguments

None

Default

-prefetch or /Qprefetch Prefetch insertion optimization is enabled.

Description

This option enables prefetch insertion optimization. To use this option, you must also specify O3.

The goal of prefetching is to reduce cache misses by providing hints to the processor about when data should be loaded into the cache.

To disable the prefetch insertion optimization, use -no-prefetch (Linux) or /Qprefetch- (Windows).

Alternate Options

None