[Bug c/85957] i686: Integers appear to be different, but compare as equal

[joseph at codesourcery dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85957

--- Comment #26 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Adding the support for C++ would also be a matter for people who care 
about this platform that few people do now care about.

I suspect that if you force the back-end insn pattern effects of 
standards-conforming excess precision to on (i.e. stop the back end 
claiming to have SFmode / DFmode operations that use x87 floating point), 
that will still work for languages without special support, because of the 
optabs code that handles expanding using a wiser mode as necessary (even 
if not safe) - but while that would get XFmode spills, the GIMPLE code 
would still think some operations were being carried out in SFmode / 
DFmode, so without the front-end support you wouldn't eliminate optimizer 
anomalies.