OPERAND GENERATION IN AT LEAST ONE PROCESSING PIPELINE
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United States of America Patent
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Issued Date -
Dec 11, 2014
app pub date -
May 9, 2014
filing date -
Jun 10, 2013
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Abstract
A data processing apparatus has at least one processing pipeline having first, second and third pipeline stages. The first pipeline stage detects whether a stream of instructions to be processed includes a predetermined instruction sequence comprising first and second instructions for performing first and second operand generation operations, where the second operand generation operation is dependent on an outcome of the first. In response to detecting this instruction sequence, the first pipeline stage generates a modified stream of instructions in which at least the second instruction is replaced with a third instruction for performing a combined operand generation operation having the same effect as the first and second operand generation operations. As the third instruction can be scheduled independently of the first instruction, processing performance of the pipeline can be improved.
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