[PATCH] D144319: [SimplifyCFG] Check if the return instruction causes undefined behavior

[Mark de Wever via Phabricator via llvm-commits]

Mordante added a comment.

After a recent update of Clang in the libc+++ precommit CI I see consistent failures of 4 tests in our no exception build
https://buildkite.com/llvm-project/libcxx-ci/builds/20704#0186e44d-63c5-414e-ba9d-9771804b7c4f

I've bisected the issue to this patch, reverting the `.cpp` changes on HEAD fixes the build.

Would it be possible to fix this issue quickly, if not can you revert this patch?


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D144319