http://llvm.org/bugs/show_bug.cgi?id=15552

Richard Smith <[email protected]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |[email protected]
         Resolution|---                         |DUPLICATE

--- Comment #1 from Richard Smith <[email protected]> ---
Clang's constexpr implementation does not perform caching. In C++14, it's not
even clear whether caching will be possible, so it seems like a waste of time
to invest in it now.

Instead, I suggest you remember that constexpr functions can also be used at
runtime, and try not to write functions with exponential runtime.

*** This bug has been marked as a duplicate of bug 12850 ***

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