[Bug tree-optimization/126016] -frounding-math does not prevent removal of casts

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126016

--- Comment #7 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
There aren't any rounding issues with any of these (when the conversion is
genuinely widening). -fsignaling-nans should disable these transformations if
it doesn't already, however.