[Bug middle-end/81657] [8 Regression] FAIL: gcc.dg/20050503-1.c scan-assembler-not call

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81657

--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #3)
> As I said earlier, the patch is IMHO wrong and instead ARM/AArch64 should
> implement efficient mempcpy in the library.
> If not, we should have a target hook whether the target has sane mempcpy or
> not and use it at least for cases like this, where using it will allow
> tail-calling it, while using memcpy precludes that.  And then XFAIL the test
> on targets with bad mempcpy implementation.

Yes, I'm planning to come up with such target hook.