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Define PREFETCH_MOD_TO_UNROLL_FACTOR_RATIO heuristic.
authorspop <spop@138bc75d-0d04-0410-961f-82ee72b054a4>
Mon, 17 May 2010 22:33:53 +0000 (22:33 +0000)
committerspop <spop@138bc75d-0d04-0410-961f-82ee72b054a4>
Mon, 17 May 2010 22:33:53 +0000 (22:33 +0000)
commitc0a0de5e914f37a95c9d67f1428d4b21c5f8da9d
tree9957431e127d4b12f699827d78fb336349730bedtree | snapshot
parentbc1b408aa8c9a23e631a165e1e8a0c0b97a68777commit | diff
Define PREFETCH_MOD_TO_UNROLL_FACTOR_RATIO heuristic.

2010-05-17  Changpeng Fang  <changpeng.fang@amd.com>

* tree-ssa-loop-prefetch.c (PREFETCH_MOD_TO_UNROLL_FACTOR_RATIO): New.
(schedule_prefetches): Do not generate a prefetch if the unroll factor
is far from what is required by the prefetch.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@159514 138bc75d-0d04-0410-961f-82ee72b054a4
gcc/ChangeLog diff | blob | history
gcc/tree-ssa-loop-prefetch.c diff | blob | history
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