[PATCH] D37514: [PowerPC] support ZERO_EXTEND in tryBitPermutation

[Hiroshi Inoue via Phabricator via llvm-commits]

inouehrs added a comment.

I did not see significant changes in performance on average (0.01% improvement) in five runs of SPECCPU2006.
As individual benchmarks, the performance ranges from 1.74% improvement (povray) to 1.23% degradation (xalan).
(Note that measurements are done on a somewhat _noisy_ cloud instance.)

All tests are passed on a ppc64le/POWER8 box.


Repository:
  rL LLVM

https://reviews.llvm.org/D37514