3 ms·

But isn't there a 5-byte single instruction that has no effect, like `NOP DWORD ptr [EAX + EAX*1 + 00H]`? I thought that multibyte NOPs were executed in a sin

But isn't there a 5-byte single instruction that has no effect, like `NOP DWORD ptr [EAX + EAX*1 + 00H]`? I thought that multibyte NOPs were executed in a single instruction?

layer8 4y ago
I’m pretty sure it would be slower, if only by taking up more space in the instruction cache (in the common case where no hotpatch is applied).
MBCook 4y ago
They may not have been coalesced at the time the decision was made.