[Bug tree-optimization/105030] store motion if-change flag causes if-conversion optimization can't be taken.

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105030

--- Comment #7 from HaoChen Gui <guihaoc at gcc dot gnu.org> ---
The original case comes from a Fortran program. I rewrote it with C. As the
arguments are passed by reference in Fortran (by default), the problem is
common. But I am not sure if it has a large performance impact.