https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86350
Alexander Monakov <amonakov at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |amonakov at gcc dot gnu.org --- Comment #2 from Alexander Monakov <amonakov at gcc dot gnu.org> --- The multiplication is optimized out under -ffinite-math-only -fno-signed-zeros (otherwise y can be NaN if bar returns infinity, for example). Why is it ok to optimize out the call to bar even though it's impure?