[Bug rtl-optimization/40987] ifcvt sometimes goes wrong for integer modes > 64bit

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40987

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED
   Target Milestone|---                         |4.9.0

--- Comment #14 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Looks like this was fixed with r0-127324-ge15eb172b0dd (aka PR 59545).
Basically a signed integer overflow inside the compiler was causing the wrong
code happening.