[PATCH] D109280: [WIP][DSE] Memory intrinsics like memset, memcpy, memmove are removed if they are overwritten by a store in a loop

[Nikita Popov via Phabricator via llvm-commits]

nikic added a comment.

In D109280#3043179 <https://reviews.llvm.org/D109280#3043179>, @xbolva00 wrote:

> I think this would have nontrivial impact on compile time (@nikic ?) and the results from testsuite do not look so promising - I would expect more “hits” to justify (small if possible) compile time regression.

Yes, this has a large negative effect: https://llvm-compile-time-tracker.com/compare.php?from=64eaffb613d0cb7fa7542fa48281a2e617ad8ee9&to=6e7452757e16c4260fa9a5862761a68ed778dbf9&stat=instructions


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