Patent
1997-04-21
1999-03-02
Lim, Krisna
395393, G06F 930
Patent
active
058782427
ABSTRACT:
A system and method for forwarding a first instruction into a second instruction in a processor is disclosed. The processor comprises an execution unit and providing a plurality of instructions. The first instruction depends upon execution of the second instruction but does not otherwise require execution by the execution unit. The method first searches for the second instruction. The method then forwards the first instruction via the second instruction by appending a tag to the second instruction, the tag identifying the first instruction.
One aspect of the method and system forwards a store instruction into a floating point instruction in a processor. The store instruction has a source address and the floating point instruction has a target address. The processor provides a plurality of instructions. The method searches for the floating point instruction that is provided before the store instruction. The method then determines if the source address is equal to the target address. The method forwards the store instruction through the floating point instruction if the source address is equal to the target address by appending a tag to the floating point instruction, the tag identifying the store instruction.
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Brooks Jeffrey Scott
Olson Christopher Hans
England Anthony V.S.
International Business Machines - Corporation
Lim Krisna
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