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

[leppkes at stce dot rwth-aachen.de]

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

--- Comment #9 from Klaus Leppkes <leppkes at stce dot rwth-aachen.de> ---
Created attachment 47358
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47358&action=edit
Problem with g instead of m example

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");