Boots – shoes – and leggings
Patent
1991-12-17
1994-11-01
Shaw, Gareth D.
Boots, shoes, and leggings
395650, 395375, 364DIG1, 3642804, G06F 945
Patent
active
053613546
ABSTRACT:
An optimization method to be carried out within a digital computer under programmed control for eliminating or removing from a loop body alternate exit tests substantially of the form .alpha.i+.beta.cond.phi., where .alpha., .beta. and .phi. are loop invariant expressions, i is the innermost loop index variable, and cond is one of the relational operators (=,.noteq.,>,.gtoreq.,<,.ltoreq.). Each alternate exit test is compared to a list of elimination conditions. If an alternate exit test matches one of the elimination conditions, it is eliminated entirely from the loop body. If the alternate exit test cannot be eliminated, it is then compared to a list of restriction conditions. If the alternate exit test matches one of the restriction conditions, the loop index upper bound is modified if necessary and the alternate exit test is moved from inside to outside of the loop body. The resulting altered loop body is near optimum in terms of both the storage area utilized and the program execution time.
REFERENCES:
patent: 4398249 (1983-08-01), Pardo et al.
patent: 4807126 (1989-02-01), Gotou et al.
Kennedy, Ken, Automatic Translation Of Fortran Programs To Vector Form, Oct. 1980, Department of Mathematical Sciences, Rice University, Houston, Tex., pp. 13-14.
Cray Research Inc.
Katbab A.
Shaw Gareth D.
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