Question

Is it possible to prevent the gcc compiler from inlining a particular function. If so, how?

Don’t tell me to reduce the optimization level. I want all optimizations on, but mark a particular function to no be inlined by the compiler, just like volatile in case of variables.

And the reason I want to do this is because my function uses inline assembly defined labels, which gcc messes up when it inlines the function, as inlining causes gcc to create multiple instances of that label.

Answer 1

__attribute__(noinline) should be placed first, like shown below. Otherwise the compiler will complain that attributes are not allowed on a function-definition.

__attribute__(noinline) void my_function( void * arg )
{
  .....
}