Interactions

This option accumulates instead of overrides.

The sun_prefetch.h header file provides the macros for specifying explicit prefetch instructions. The prefetches will be approximately at the place in the executable that corresponds to where the macros appear.

To use the explicit prefetch instructions, you must be on the correct architecture, include sun_prefetch.h, and either exclude -xprefetch from the compiler command or use -xprefetch, -xprefetch=auto,explicit, -xprefetch=explicit or -xprefetch=yes.

If you call the macros and include the sun_prefetch.h header file, but pass -xprefetch=no%explicit or -xprefetch=no, the explicit prefetches will not appear in your executable.

The use of latx:factor is valid only when automatic prefetching is enabled. That is, latx:factor is ignored unless you use it in conjunction with yes or auto, as in -xprefetch=yes,latx:factor.