[Bug c++/89478] missed optimization for lambda expression when variable is uninitialized when declared

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89478

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|tree-optimization           |c++
             Blocks|                            |54367

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
For the original testcase except for test4, it is optimized for C++20 and not
C++17.  Most likely because lambdas are considered constexpr if they can be
such. In test4 I suspect the uninit variable is making it not considered
constexpr.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54367
[Bug 54367] [meta-bug] lambda expressions