[Bug tree-optimization/59690] GCC fails to fold operations on frame-allocated variable across function call

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59690

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>It seems to think that the frame-allocated "x" is global memory.

No it thinks it has already escaped the function because right now escape
analysis is not flow sensitive.