Detecting logically non-significant operation based on opcode and operand and setting flag to decode address specified in subsequent instruction as different address

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United States of America Patent

PATENT NO 8880852
SERIAL NO

13281958

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Abstract

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A method, apparatus, and program product execute instructions of an instruction stream and detect logically non-significant operations in the instruction stream. Then, based on that detection, a target or source address of a subsequent instruction is adjusted. In some instances, doing so enables a greater number of addresses, e.g., registers, to be accessed in a given number of bit positions within an instruction format.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hickey, Mark J Rochester, US 28 581
Muff, Adam J Rochester, US 74 2136
Tubbs, Matthew R Rochester, US 92 2455
Wait, Charles D Byron, US 32 1055

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