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:
Aug. 24, 1999
Filed:
Nov. 27, 1996
Applicant:
Inventors:
David M Gillies, Cupertino, CA (US);
Dz-ching Ju, Sunnyvale, CA (US);
Assignee:
Hewlett-Packard Company, Palto Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
395709 ; 395707 ; 39518313 ; 39518314 ;
Abstract
The relationships among predicates can be analyzed over the scope of an entire procedure. The system scans a block of predicated code and collects a set of predicates used in the code to form a basis set. The system then allocates a bit-vector for each predicate in the basis set to form a live set. Each bit-vector represent a liveness of each predicate. The system then builds an interference graph that symbolizes interferences between registers during allocation of registers.