likely/unlikely equivalent for MSVC

Question

GCC compiler supports __builtin_expect statement that is used to define likely and unlikely macros.

eg.

#define likely(expr)    (__builtin_expect(!!(         


        

Answer 1

According to http://www.akkadia.org/drepper/cpumemory.pdf (page 57), it still makes sense to use static branch prediction even if CPU predicts correctly dynamically. The reason for that is that L1i cache will be used even more efficiently if static prediction was done right.