[llvm-bugs] [Bug 47390] [LoopVectorize] Assertion `isa<PHINode>(UI) && "Expected LCSSA form"' failed.

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=47390

Mindong Chen <chenmindong120 at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|WORKSFORME                  |---
             Status|RESOLVED                    |REOPENED

--- Comment #2 from Mindong Chen <chenmindong120 at gmail.com> ---
(In reply to Florian Hahn from comment #1)
> I cannot reproduce the issue with a clang build from recent trunk.
> 
> When built with `clang -O3`, the loop gets removed entirely. I also cannot
> reproduce with Clang 10/Clang 10.1 https://godbolt.org/z/r89vo9
> 
> Please re-open with more details on how to reproduce the crash.

Sorry I forgot to post the command here, please compile with -Os:

$ clang -Os reproducer.c

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