[Bug middle-end/84891] -fno-signed-zeros leads to optimization which should be possible only if also -ffinite-math-only is on

joseph at codesourcery dot com gcc-bugzilla@gcc.gnu.org
Fri Mar 16 17:29:00 GMT 2018


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84891

--- Comment #2 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
I'm not sure what the C++ complex multiplication / division requirements 
are here (for that matter, C doesn't seem to precisely define which NaN - 
which value with at least one NaN part and the other part not infinite - 
is produced from complex multiplication / division in this case, though 
NaN + iNaN probably makes more sense).


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