https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106187

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|target                      |rtl-optimization

--- Comment #39 from Richard Biener <rguenth at gcc dot gnu.org> ---
So to say - it's wrongdoing of postreload which should not remove the dead
store because it still needs to serve as a barrier for the subsequent load.

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