[Diffusion] rL250324: [PowerPC] Fix invalid lxvdsx optimization (PR25157)

[Tom Stellard via llvm-commits]

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r252483


Users:
  wschmidt (Author)
  3.7-release (Auditor)
  llvm-commits (Auditor)
  tstellarAMD (Auditor)
  hfinkel (Auditor)

http://reviews.llvm.org/rL250324