[Bug target/67317] [x86] Silly code generation for _addcarry_u32/_addcarry_u64

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67317

Segher Boessenkool <segher at gcc dot gnu.org> changed:

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

--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
These things would normally be taken care of by combine, but
combine of course does not know what the UNSPEC_ADD_CARRY's mean.
Does this need to be an unspec at all?