Menu
Inline function may increase efficiency if it is small. 2) If a function contains static variables. 3) If a function is recursive. 4) If a function return type is other than void, and the return statement doesn't exist in function body.
An inline function is one for which the compiler copies the code from the function definition directly into the code of the calling function rather than creating a separate set of instructions in memory. This eliminates call-linkage overhead and can expose significant optimization opportunities.
The only situation in which a function cannot be inlined is if there is no definition for the function in the compilation unit. Even that will not prevent link-time inlining by a link-time optimizer.
Static inline functions are simple. Either a function defined with the inline function specifier is inlined at a reference, or a call is made to the actual function. The compiler can choose which to do at each reference. The compiler decides if it is profitable to inline at -xO3 and above.
If I mark any function as inline, is there a way I can know if the function gets inlined or not?
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With