3 ms·
TEST instruction in x86/x64 is the same as AND instruction (bitwise and), but result of the computation is discarded (only flags are retained).
by mkup 5y ago
TEST instruction in x86/x64 is the same as AND instruction (bitwise and), but result of the computation is discarded (only flags are retained).
- tzot 5y agoThanks; my assembly experience was with earlier processors, with a single argument for their test instruction (kind of like calling x86 test with two same arguments). I should have checked what the x86 test instruction does before replying.