opt-prefetch-issue-excl-hint, Qopt-prefetch-issue-excl-hint

Determines whether the compiler issues prefetches for stores with exclusive hint.

IDE Equivalent

None

Architectures

IA-64 architecture

Syntax

Linux:

-opt-prefetch-issue-excl-hint

-no-opt-prefetch-issue-excl-hint

Mac OS X:

None

Windows:

/Qopt-prefetch-issue-excl-hint

/Qopt-prefetch-issue-excl-hint-

Arguments

None

Default

-no-opt-prefetch-issue-excl-hint
or/Qopt-prefetch-issue-excl-hint-

The compiler does not issue prefetches for stores with exclusive hint.

Description

This option determines whether the compiler issues prefetches for stores with exclusive hint. If option -opt-prefetch-issue-excl-hint (Linux) or /Qopt-prefetch-issue-excl-hint (Windows) is specified, the prefetches will be issued if the compiler determines it is beneficial to do so.

When prefetches are issued for stores with exclusive-hint, the cache-line is in "exclusive-mode". This saves on cache-coherence traffic when other processors try to access the same cache-line. This feature can improve performance tuning.

Alternate Options

None