A.2.164.1 Values
i must be one of 1, 2, or 3.
Table A–45 The -xprefecth_level Values|
Value |
Meaning |
|---|---|
|
1 |
Enables automatic generation of prefetch instructions. |
|
2 |
Targets additional loops, beyond those targeted at -xprefetch_level=1, for prefetch insertion. Additional prefetches may be inserted beyond those that were inserted at -xprefetch_level=1. |
|
3 |
Targets additional loops, beyond those targeted at -xprefetch_level=2, for prefetch insertion. Additional prefetches may be inserted beyond those that were inserted at -xprefetch_level=2. |
Defaults
The default is -xprefetch_level=1 when you specify -xprefetch=auto.
Interactions
This option is effective only when it is compiled with -xprefetch=auto, with optimization level 3 or greater (-xO3), and on a platform that supports prefetch (v9, v9a, v9b, generic64, native64).
- © 2010, Oracle Corporation and/or its affiliates