https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91758

--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Eric Botcazou from comment #8)
> > I've got it. It's a usage of an uninitialize member variable in a class:
> > https://bugs.llvm.org/show_bug.cgi?id=40547#c38
> 
> Thanks for catching this!

You're welcome. It took me almost the whole day yesterday, but I learn more
about store merging (and read quite some RTL dumps).

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