3.4.159 -xprefetch_level={1|2|3}

Control the automatic generation of prefetch instructions.

This option is only effective when compiling with:

• -xprefetch=auto,

• with optimization level 3 or greater,

• on a platform that supports prefetch .

The default for -xprefetch=auto without specifying -xprefetch_level is level 2.

Prefetch level 2 generates additional opportunities for prefetch instructions than level 1. Prefetch level 3 generates additional prefetch instructions than level 2.

Prefetch levels 2 and 3 may note be effective on older SPARC or x86 platforms.