[PATCH] D43256: [MBP] Move a latch block with conditional exit and multi predecessors to top of loop

David Li via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Thu Jul 18 08:33:14 PDT 2019


davidxl added a comment.

Is the test case slow down with PGO or not?  Also do you have branch misprediction perf data? (large slowdowns like this is usually triggered by side effect like this). Is there a trimmed down version to demonstrate the issue?


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D43256/new/

https://reviews.llvm.org/D43256





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