> On May 31, 2024, at 22:06, Miroslav Benes <mbenes@xxxxxxx> wrote: > >> And for the unlikely branch, isn’t the complier will compile this branch >> into a cold branch that will do no harm to the function performance? > > The test (cmp insn or something like that) still needs to be there. Since > there is only a simple assignment in the branch, the compiler may just > choose not to have a cold branch in this case. The only difference is in > which case you would jump here. You can see for yourself (and prove me > wrong if it comes to it). > > Miroslav Hi Miroslav, Yes, more tests should be done in this case according to your opinion. Regards, Wardenjohn
