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:
Oct. 10, 2006
Filed:
Apr. 28, 2000
David L. Stephenson, Cambridge, MA (US);
Raymond Lo, Sunnyvale, CA (US);
Sun Chan, Fremont, CA (US);
Wilson Ho, San Mateo, CA (US);
Chandrasekhar Murthy, Cupertino, CA (US);
David L. Stephenson, Cambridge, MA (US);
Raymond Lo, Sunnyvale, CA (US);
Sun Chan, Fremont, CA (US);
Wilson Ho, San Mateo, CA (US);
Chandrasekhar Murthy, Cupertino, CA (US);
Silicon Graphics, Inc., Mountain View, CA (US);
Abstract
A method and computer program product, within an optimizing compiler, for precise feedback data generation and updating. The method and computer program uses instrumentation and annotation of frequency values to allow feedback data to stay current during the multiple optimizations that the program code undergoes during compilation. Global propagation of known precise feedback values are used to replace approximate and unavailable values, and global verification of feedback data after optimization to detect discrepancies is employed. The method and computer program also provides improved instrumentation to anticipate cloning when code is cloned during ceratin compiler optimizations and handles inlined procedures. The result is compiled executables with improved SPECint benchmarks.