[Bug tree-optimization/116409] [15 Regression] Recent phiopt change causing ICE on riscv64

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116409

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
`-O2 -frounding-math -fno-math-errno` is enough to get the ICE even on x86_64.