https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82479

David Malcolm <dmalcolm at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |dmalcolm at gcc dot gnu.org

--- Comment #8 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
FWIW, llvm appears to implement this within:
 
https://github.com/llvm-mirror/llvm/blob/master/lib/Transforms/Scalar/LoopIdiomRecognize.cpp

(Matt Godbolt mentioned this in his recent CppCon talk:
  https://youtu.be/bSkpMdDe4g4?t=2408 )

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