Methods and Apparatus to Predict Non-Execution of Conditional Non-branching Instructions
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United States of America Patent
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Issued Date -
Feb 24, 2011
app pub date -
Aug 19, 2009
filing date -
Aug 19, 2009
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Abstract
Efficient techniques are described for not executing an issued conditional non-branch instruction. A conditional non-branch instruction is identified as being eligible for a prediction, the prediction indicating that the eligible conditional non-branch (ECNB) instruction would not execute. The ECNB instruction executes as a no operation (NOP) instruction in response to the prediction that the ECNB instruction would not execute. A source operand required for the ECNB instruction to execute is not fetched in response to the prediction to not execute.
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