Method for scheduling a flag generating instruction and a subsequent instruction by executing the flag generating instruction in a microprocessor
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United States of America Patent
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-
Apr 11, 2000
Grant Date -
N/A
app pub date -
Aug 20, 1996
filing date -
Aug 20, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for scheduling a flag generating instruction and a subsequent instruction. The subsequent instruction has a data dependency on the flag generating instruction. The flag generating instruction is translated into first and second instructions. The subsequent instruction is translated into at least a third instruction. The first instruction, when executed, generates a result and intermediate flag generation data. The second instruction, when executed, generates a plurality of flags. The first instruction is scheduled to execute before the second and third instructions. The second instruction is scheduled to execute before the third instruction if the third instruction has a data dependency on the second instruction, otherwise the third instruction may be scheduled to execute before the second instruction.
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