PROCESSOR CONFIGURED FOR OPERATION WITH MULTIPLE OPERATION CODES PER INSTRUCTION
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United States of America Patent
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app pub date -
Feb 21, 2014
filing date -
May 30, 2007
priority date (Note) -
Abandoned
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Abstract
A method of associating operation codes with instructions for execution in a processor includes the steps of assigning the operation codes to the instructions in a manner that allows a given instruction to have multiple assigned operation codes and selecting a particular one of the multiple assigned operation codes for use in executing a program containing the given instruction. The assigning step may be implemented in conjunction with design of the processor, and may further comprise the steps of determining frequency of occurrence of adjacent pairs of instructions in one or more programs likely to be run on the processor, and assigning the operation codes to the instructions based at least in part on the determined frequency of occurrence of the adjacent pairs of instructions. The selecting step may be implemented in conjunction with code generation for the program containing the given instruction, for example, in a code assembler.
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