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

[David Li via Phabricator via llvm-commits]

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?


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  rL LLVM

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  https://reviews.llvm.org/D43256/new/

https://reviews.llvm.org/D43256