[Bug target/95784] Failure to optimize usage of __builtin_add_overflow with return statement properly

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95784

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

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

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I dont see an issue here. Gcc is avoiding one cmov by doing a sign extend from
bit 0 (sal/sar) and an and instruction. 

Cmov on x86 processors is a bit weird and sometimes slower than using
arthematic instructions.