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:
May. 30, 1995
Filed:
Jun. 17, 1993
Francis X McKeen, Westborough, MA (US);
Michael C Adler, Lexington, MA (US);
Joel S Emer, Acton, MA (US);
Robert P Nix, Concord, MA (US);
David J Sager, Acton, MA (US);
P Geoffrey Lowney, Concord, MA (US);
Digital Equipment Corporation, Maynard, MA (US);
Abstract
A compiler groups instructions into sets. The sets of instructions are related by data and control dependencies which are unresolvable by the compiler. Sets of instructions having unresolved dependencies are executed in a speculative state of the computer system under the assumption that an exception condition will not occur. However, if an exception condition does occur while executing a set of instructions in the speculative state, that exception condition is detected and the set of instructions is re-executed in a real state of the computer system to resolve the exception condition.