[llvm-bugs] [Bug 31141] opt crashes while running "Loop Pass Manager" pass: Assertion `LICM.getLoopToAliasSetMap().empty() && "Didn't free loop alias sets"' failed

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=31141

Florian Hahn <florian_hahn at apple.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|WORKSFORME                  |FIXED
 Fixed By Commit(s)|                            |360704

--- Comment #9 from Florian Hahn <florian_hahn at apple.com> ---
Yep r360704 solves this issue, by weakening the assertion to allow top-level
loops to remain in LoopToAliasSetMap. 

We subsequently clear the map during finalization. There is not much else we
can do with the current structure, as the removed loop object is already
invalid when we call back to LICM to clean up the map.

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