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:
Jul. 20, 1993
Filed:
Feb. 05, 1990
Takayoshi Iitsuka, Hachioji, JP;
Sumio Kikuchi, Machida, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A program compiling method in which a procedure being compiled is split into a plurality of units referred to as segments, whereon optimization is carried out for each of the segments. Upon recompilation of the procedure, optimization of the procedure is redone not for the whole of the procedure but executed only on the segments which are affected by modification, while for the segments insusceptible to the influence of modification, object program obtained by the compilation or the intermediate codes available in the course of the optimization are reused. At several stages of optimization, intermediate results of the optimization are recorded, wherein upon recompilation, the intermediate results of optimization obtained in the preceding compilation are made use of up to the stage where no influence of modification makes appearance. The amount of processing involved in the optimization can thus be reduced even when the object program can not be utilized. In a mode for carrying out the invention, not only the interim results of optimization but also the contents of optimization executed are recorded. Upon recompilation, those of the optimization processings executed in the preceding compilation which are to be executed again can be performed rapidly by making use of the contents stored. The time taken for the execution of optimization processing to be re-executed can be reduced significantly.