[PATCH] D125299: [ValueTracking] Enable -branch-on-poison-as-ub by default

[Nikita Popov via Phabricator via llvm-commits]

nikic added a comment.

In D125299#3503151 <https://reviews.llvm.org/D125299#3503151>, @fhahn wrote:

> Sounds good to me in general. I think there are at least 2 known issues with SimplifyCFG & LoopUnroll introducing branches on poison/undef. Linked to https://github.com/llvm/llvm-project/issues/45489. If you know of other issues in that area it might be good to all link them to that issue, so it is easier to keep track of the outstanding issues

ControlHeightReduction and LoopUnroll have been fixed, patches for IndVarSimplify (https://reviews.llvm.org/D124910), JumpThreading (https://reviews.llvm.org/D125869) and CodeGenPrepare (https://reviews.llvm.org/D125887) are pending.


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