[Bug tree-optimization/98028] [12/13/14 Regression] __builtin_sub_overflow_p not folded to const when some constraints are known

[law at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98028

Jeffrey A. Law <law at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[12/13/14/15 Regression]    |[12/13/14 Regression]
                   |__builtin_sub_overflow_p    |__builtin_sub_overflow_p
                   |not folded to const when    |not folded to const when
                   |some constraints are known  |some constraints are known
           Assignee|law at gcc dot gnu.org             |unassigned at gcc dot 
gnu.org

--- Comment #13 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Fixed on the trunk.  Not planning to backport.