https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54192
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to Eric Botcazou from comment #7) > > I suppose that argues for a tighter coupling of -fnon-call-exceptions > > and -ftrapping-math and in particular not enabling -ftrapping-math > > by default (unless -fnon-call-exceptions is enabled?). > > Nope, in Ada where -fnon-call-exceptions is the default, -fno-trapping-math > is also the default (at least on native platforms). If you do not do that, > then you end up with EH edges from every single floating-point operations. Note this also argues for splitting -ftrapping-math into the FENV access part and the part that considers exception state changes causing observable traps (aka for Fortran -ffpe-trap=...). Mixing both is quite bad with -fnon-call-exceptions as you say.
