Sun Studio 12: C User's Guide

B.2.129 -xprefetch_auto_type=a

Where a is [no%]indirect_array_access.

Use this option to determine whether or not the compiler generates indirect prefetches for the loops indicated by the option -xprefetch_level in the same fashion the prefetches for direct memory accesses are generated.

If you do not specify a setting for -xprefetch_auto_type, the compiler sets it to -xprefetch_auto_type=no%indirect_array_access.

Options such as -xalias_level can affect the aggressiveness of computing the indirect prefetch candidates and therefore the aggressiveness of the automatic indirect prefetch insertion due to better memory alias disambiguation information.