[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 #12 from Klaus Leppkes <leppkes at stce dot rwth-aachen.de> ---
"I said "+g", not "+g,r".  g stands for general operand, so it allows a
non-immediate operand, whether it is in memory or register."

error_large_lvalue.cpp: In function ‘void DoNotOptimize(Tp&) [with Tp =
Large]’:
error_large_lvalue.cpp:16:46: error: inconsistent operand constraints in an
‘asm’
   16 |   asm volatile("" : "+g"(value) : : "memory");