Editing Branch predictor (section)

===Local branch prediction===
A local branch predictor has a separate history buffer for each conditional jump instruction. It may use a two-level adaptive predictor. The history buffer is separate for each conditional jump instruction, while the pattern history table may be separate as well or it may be shared between all conditional jumps.

The [[Intel]] [[Pentium MMX]], [[Pentium II]], and [[Pentium III]] have local branch predictors with a local 4-bit history and a local pattern history table with 16 entries for each conditional jump.

On the [[Standard Performance Evaluation Corporation|SPEC]]'89 benchmarks, very large local predictors saturate at 97.1% correct.<ref name="decwrl-tn-36"/>{{rp|6}}