https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91425
--- Comment #8 from joseph at codesourcery dot com <joseph at codesourcery dot com> --- A more general representation would facilitate implementing __builtin_iseqsig (bug 77928). (As noted in previous discussions, some processors, e.g. MIPS, actually have a general comparison operation that can represent all 32 choices of which cases the comparison is true for, and whether it raises "invalid" for quiet NaNs. So it would be good to have a clear path through from the general representation to selecting a single corresponding instruction on such processors.)
