[PATCH] D125398: [ControlHeightReduction] Freeze condition when converting select to branch
Nikita Popov via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed May 11 09:19:24 PDT 2022
nikic created this revision.
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While select conditions can be poison, branch on poison is immediate UB. As such, we need to freeze the condition when converting a select into a branch.
https://reviews.llvm.org/D125398
Files:
llvm/lib/Transforms/Instrumentation/ControlHeightReduction.cpp
llvm/test/Transforms/PGOProfile/chr.ll
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