[PATCH] [PowerPC] Implement miscellaneous vector logical operations introduced in POWER8

[Bill Schmidt]

This LGTM -- could you expand on the FIXME to indicate what we discussed the other day?  I.e., that the patterns should be differentiated by HasVSX and !HasVSX so that uses of AddedComplexity are minimized?


http://reviews.llvm.org/D7469

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