[Bug c++/92597] std::fma gives nan using -march=sandybridge+ with asm volatile

[amonakov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92597

Alexander Monakov <amonakov at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |amonakov at gcc dot gnu.org

--- Comment #1 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Testcase isolating what appears to be the biggest issue in the original:

double f()
{
    double d=-1;
    asm("" : "+m,r"(d));
    return d;
}

long double g()
{
    long double d=-1;
    asm("" : "+m,r"(d));
    return d;
}