[PATCH] D80707: [legacyPM] Do not compute preserved analysis if there's no local change

[Nikita Popov via Phabricator via llvm-commits]

nikic added a comment.

CTMark numbers: http://llvm-compile-time-tracker.com/compare.php?from=9c52422cd83137a55e9d198bf123982c040b2e99&to=3277ba4fa8cae4e276482889a99757261264410e&stat=instructions This is a 0.4% improvement for -O3.

However, there are some text size changes for ReleaseLTO -g builds: http://llvm-compile-time-tracker.com/compare.php?from=9c52422cd83137a55e9d198bf123982c040b2e99&to=3277ba4fa8cae4e276482889a99757261264410e&stat=size-text This makes me think that some passes are possibly not reporting changes correctly.


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  https://reviews.llvm.org/D80707/new/

https://reviews.llvm.org/D80707