[PATCH] Tune TTI getMaxInterleaveFactor for POWER8

[Olivier Sallenave]

In http://reviews.llvm.org/D7503#122401, @hfinkel wrote:

> I ran benchmarks on the `P7` today, and I'm fine with this change.


Thanks Hal for benchmarking this! Committed revision 228973.


http://reviews.llvm.org/D7503

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