[PATCH] D107352: [MemoryLocation] learn about ptr_provenance

[Jeroen Dobbelaere via Phabricator via llvm-commits]

jeroen.dobbelaere added a comment.

As shown in https://llvm-compile-time-tracker.com/index.php?config=NewPM-O3&stat=instructions&branch=dobbelaj-snps/perf/ptr_provenance-20210803-03, it seems that tracking the ptr_provenance in the MemoryLocation results in a pretty big extra overhead.

Tracking it in the AAMDNodes as we do in the full restrict patches (See https://llvm-compile-time-tracker.com/index.php?config=NewPM-O3&stat=instructions&branch=dobbelaj-snps/perf/full_restrict-20200918 ; change f3d32e5da7 'looking through noalias intrinsics') seems to have a less severe impact..


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https://reviews.llvm.org/D107352