A method, apparatus & computer program product for selecting...

Details A method, apparatus & computer program product for selecting... A method, apparatus & computer program product for selecting...

G - Physics

06

F

G06F 12/08 (2006.01) G06F 9/30 (2006.01) G06F 9/38 (2006.01) G06F 9/40 (2006.01) G06F 9/46 (2006.01)

Patent

CA 2277636

Apparatus, methods, and computer program products are disclosed that improve the operation of a computer that uses a top-of-stack cache by reducing the number of overflow and underflow traps generated during the execution of a program. An exception history is maintained that tracks recent occurrences of overflow and underflow exception traps. This exception history is hashed with the address of the computer instruction that caused the exception to generate an index into a set of predictors. Thus, a predictor is used that is responsive to the current exception history of the top-of stack cache.

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