[PATCH] D62262: [PGO][CHR] Speed up following long use-def chains.

[David Li via Phabricator via llvm-commits]

davidxl accepted this revision.
davidxl added a comment.
This revision is now accepted and ready to land.

Indeed. The original one is O(N^2).   LGTM.


Repository:
  rL LLVM

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  https://reviews.llvm.org/D62262/new/

https://reviews.llvm.org/D62262