Editing Branch predictor (section)

===Prediction of function returns===
A [[subroutine|function]] will normally return to where it is called from. The [[return statement|return instruction]] is an indirect jump that reads its target address from the [[call stack]]. Many microprocessors have a separate prediction mechanism for return instructions. This mechanism is based on a so-called ''return stack buffer'', which is a local mirror of the call stack. The size of the return stack buffer is typically 4–16 entries.<ref name="Fog_Microarchitecture"/>