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

[pinskia at gcc dot gnu.org]

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

--- Comment #11 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Klaus Leppkes from comment #9)
> 
> g++ -c error_large_lvalue.cpp 
> error_large_lvalue.cpp: In function ‘void DoNotOptimize(Tp&) [with Tp =
> Large]’:
> error_large_lvalue.cpp:16:48: error: inconsistent operand constraints in an
> ‘asm’
>    16 |   asm volatile("" : "+g,r"(value) : : "memory");

You just need "+g" and not "+g,r".  That is what we have been saying, +m and +g
are similar.