https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105480
--- Comment #8 from Kewen Lin <linkw at gcc dot gnu.org> --- (In reply to Richard Biener from comment #7) > (In reply to Kewen Lin from comment #6) > > Both fcmpu and fcmp would trap for sNaN, is it expected with the current GCC > > implementation? > > But the key is -fsignalling-nans (default off) > Thanks for the hint, but the behaviors don't change with one more explicit option -fsignalling-nans (before or after the option for trapping-math). I saw the option description saying "This option is experimental and does not currently guarantee to disable all GCC optimizations that affect signaling NaN behavior.", does it mean target codes don't honor it much so far?
