------- Comment #9 from changpeng dot fang at amd dot com 2010-05-28 18:36 ------- (In reply to comment #8)
> Looks like this is a fix to the regressions. That is, the regressions are > actually caused by the wrong calculation. This bug could be considered fixed, > even though performance tuning may be necessary for non-constant step > prefetching. Thanks. > Oh, NO! After this patch, 465.tonto has a big regression (-16%), compared to no prefetching. Note that prefetching causes 465.tonto a ~7% degradation originally (before non-constant step prefetching) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44297
