The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 29, 2009
Filed:
Oct. 16, 2006
Mike S. Fulton, Maple Ridge, CA;
Ali I. Sheikh, Toronto, CA;
Mike S. Fulton, Maple Ridge, CA;
Ali I. Sheikh, Toronto, CA;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A register-based instruction optimization is provided for facilitating efficient emulation of a target instruction stream. The optimization includes for at least one instruction in a frequently executed sequence of target instructions: confirming that at least one register is marked as a read-only register for the sequence; confirming that each register of the at least one register has been detected to have a constant value for the at least one instruction in multiple prior iterations of the executed sequence; and response thereto, optimizing the at least one instruction by replacing the at least one instruction with at least one immediate form instruction having at least one constant value encoded directly therein from the at least one register. The optimization results in an optimized sequence of target instructions, which when translated into a sequence of host instructions, is more efficiently executed by a host computing environment.