https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114404
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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Component|c |target
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Sounds similar to PR113255. Yes, the code is undefined and you should cast
the pointers to uintptr_t but for the RTL problem that won't help. Note
the increment of 'plt' is similarly invalid so that has to be uintptr_t as
well.
It might be that different (no) REG_POINTER marking will then avoid the
latent PR113255 issue from triggering.
It might be that the s390 cpymem expander does some bogus REG_POINTER
marking as well (or that it lacks marking, causing the heuristics to
go wrong).
You can check whether backporting the PR113255 fix avoids the issue,
but I do not consider backporting the revs suitable.
