On Mon, 7 Jan 2019, Konstantin Kharlamov wrote:
In most projects a definite pattern that's unlikely to be executed is a
PRINT_ERR macro which is basically a wrapper around fprintf() call. E.g.
if (some_error) {
PRINT_ERR("ERR");
// do cleanup
return;
}
I wonder, is there a way to hint GCC that, whenever that code appears,
whatever branch was prior to that is unlikely to be executed?
Make PRINT_ERR a function with __attribute__((cold)). -- Marc Glisse
