[Bug tree-optimization/126607] ((float)unsigned_short) - FPCST where FPCST is a whole number can be convert into (float)(unsigned_short - CST)

[jsm28 at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126607

--- Comment #1 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Note: not valid with -frounding-math (2768.0 - 2768.0 is -0.0 in FE_DOWNWARD
mode).