[PATCH] D36736: [PowerPC] Check if the pre-increment preparations have already been made so that they are not done twice

[Stefan Pintilie via Phabricator via llvm-commits]

stefanp updated this revision to Diff 111389.
stefanp added a comment.

Updated based on comments from Hal Finkel.


https://reviews.llvm.org/D36736

Files:
  lib/Target/PowerPC/PPCLoopPreIncPrep.cpp
  test/CodeGen/PowerPC/ppc64-pre-inc-no-extra-phi.ll

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