Universal History Buffer to Support Multiple Register Types

摘要

An approach is provided in which a mapper control unit receives first dispatch information corresponding to a first instruction that identifies a first register and a first register type. The mapper control unit dynamically configures a first history buffer entry to support the first register type and, in turn, stores content from the first register into the first history buffer entry. The mapper control unit then receives second dispatch information corresponding to a second instruction that identifies a second register and a second register type, which is different than the first register type. The mapper control unit dynamically configures a second history buffer entry to support the second register type and, in turn, stores content from the second register into the second history buffer entry.