[Bug tree-optimization/101403] [12 Regression] wrong code with __builtin_bswap16() at -O1 by r12-2137

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101403

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

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

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Isn't the testcase UB? It reads uninitialized u (though it doesn't use the
value for anything).