[llvm-bugs] [Bug 51360] SimplifyCFGPass hoists unsafe instruction and caused undefined behaviour

via llvm-bugs llvm-bugs at lists.llvm.org
Thu Aug 5 11:43:13 PDT 2021


Nikita Popov <nikita.ppv at gmail.com> changed:

           What    |Removed                     |Added
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #2 from Nikita Popov <nikita.ppv at gmail.com> ---
Right, please see https://llvm.org/docs/LangRef.html#poison-values for
semantics of poison values and how they differ from immediate undefined

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