Electrical computers and digital processing systems: processing – Instruction issuing – Simultaneous issuance of multiple instructions
Patent
1997-03-11
1999-11-30
Maung, Zarni
Electrical computers and digital processing systems: processing
Instruction issuing
Simultaneous issuance of multiple instructions
712216, 712200, G06F 938
Patent
active
059960639
ABSTRACT:
The invention relates to the area of register renaming and allocation in superscalar computer systems. When a multitude of instructions in the instruction stream reads from or writes to a certain logical register, said logical register will have to be represented by a multitude of physical registers.
Therefore, there have to exist several physical rename registers per logical register. The oldest one of said rename registers defines the architected state of the computer system, the in-order state.
The invention provides a method for administration of the various register instances. Both the registers representing the in-order state and the various rename instances are kept in one common circular buffer. There exist two pointers per logical register: The first one, the in-order pointer, points to the register that represents the in-order state, the second one, the rename pointer, points to the most recent rename instance.
REFERENCES:
patent: 5367650 (1994-11-01), Sharangpani et al.
patent: 5371684 (1994-12-01), Iadonato et al.
patent: 5560032 (1996-09-01), Nguyen et al.
patent: 5694564 (1997-12-01), Alsup et al.
patent: 5721855 (1998-02-01), Hinton et al.
patent: 5737624 (1998-04-01), Garg et al.
patent: 5765215 (1998-06-01), Afsar et al.
Gaertner Ute
Getzlaff Klaus Jorg
Koehler Thomas
Pfeffer Erwin
Ehrlich Marc A.
International Business Machines - Corporation
Maung Zarni
Najjar Saleh
LandOfFree
Management of both renamed and architected registers in a supers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Management of both renamed and architected registers in a supers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Management of both renamed and architected registers in a supers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1687865