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:
Jun. 26, 2001
Filed:
Oct. 07, 1997
Ramesh V. Peri, Allentown, PA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
The inventive system and method separates the tracking of the loop entry and exit points and loop optimization information, from the generation of the instrumentation code at the loop entry and exit points. Thus, the different phases in the compiler can proceed in an optimal manner with respect to producing the best optimized code. This invention allows the correlation of the source code loops to the object code loops, even though different optimizations are being applied to loops. A loop information database is used to store a history of optimizations about loops, as well as loop entry and exit points, instead of using loop data structures that must be globally maintained. The invention detects the loops in the program code, and assigns a unique identifier to each detected loop. The entry and exit points, as well as the identifier are stored in the database. Any changes to the loops from optimizations are also stored in the database. This technique enables profilers to collect and report the profile information about loops to the user in an intelligible manner.