Adam Nemet dadfbb52f7 [TTI] Add getPrefetchDistance from PPCLoopDataPrefetch, NFC ...

This patch is part of the work to make PPCLoopDataPrefetch
target-independent
(http://thread.gmane.org/gmane.comp.compilers.llvm.devel/92758).

As it was discussed in the above thread, getPrefetchDistance is
currently using instruction count which may change in the future.

llvm-svn: 258995

2016-01-27 22:21:25 +00:00

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