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:
Jan. 25, 2005
Filed:
Oct. 11, 2001
Williams Ludwell Harrison, Iii, Brookline, MA (US);
Cotton Seed, Brookline, MA (US);
Williams Ludwell Harrison, III, Brookline, MA (US);
Cotton Seed, Brookline, MA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A method and system for bidirectional bitwise constant propogation by abstract interpretation is disclosed. In one embodiment, the method performs optimizing an implementation of a programming language, comprising; analyzing one or more values computed by a program written in the programming language, wherein analyzing one or more values comprises; representing each bit within a value of the one or more values as an abstract element of a lattice having a set of abstract elements including 0, 1, ⊥and T, wherein the lattice is an abstraction of a concrete domain containing 0, 1, and ⊥; analyzing one or more output bits that are produced by an operation in terms of one or more input bits that are input to the operation; and analyzing the input bits that are input to the operation in terms of the output bits that are produced by the operation.