Method and system for optimizing non-native bytecodes before byt

Details Method and system for optimizing non-native bytecodes before byt Method and system for optimizing non-native bytecodes before byt

1997-03-07

1999-05-18

Hafiz, Tariq R.

Boots, shoes, and leggings

395701, 395702, 395704, 39518314, 364400, C01B33/36

Patent

active

059058951

ABSTRACT:
A method and system for optimizing Java bytecodes before bytecode interpretation within a computer system is disclosed. In accordance with the method and system of the present invention, a first bytecode and a second bytecode are first obtained from a file. Both the first bytecode and the second bytecode are results of a compilation of a high-level computer program. A set of instructions native to a processor within the computer system can be formed by compiling these first bytecode and second bytecode. An optimizable bytecode table is provided, and the optimizable bytecode table includes a multiple of bytecode-pair entries and a corresponding optimized bytecode. A determination is made as to whether or not the first bytecode and the second bytecode are optimizable by comparing the first bytecode and the second bytecode with all the bytecode-pair entries within the optimizable bytecode table. In response to a determination that the first bytecode and the second bytecode match one of the bytecode-pair entries within the optimizable bytecode table, the first bytecode and the second bytecode are replaced with a corresponding optimized bytecode from the optimizable bytecode table.

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Heieh, Gyllenhaal & Hwu, Java bytecode to native code translation: The caffeine prototype and preliminary results, IEEE, pp. 90-97, 1996.
Stata & Abadi, A type system for Java bytecode Subroutines, ACM POPL 98, 1998.

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