Method and apparatus for transforming Java native interface function calls into simpler operations during just-in-time compilation

A data processing system for transforming native interface function calls into simpler operations during just-in-time compilation, the data processing system comprising:

• a just-in-time compiler for constructing a list of shapes rendered in an intermediate language of a just-in-time compiler for a plurality of native interface function calls;
• a just-in-time compiler inliner for identifying, from the list of shapes, a list of native interface function calls for possible transformation;
• wherein the just-in-time compiler performs a definition and use analysis on the list of native interface function calls and a plurality of arguments passed to the native interface functions, wherein the definition and use analysis determines what variables are defined and where the defined variables are used;
• and
• a just-in-time call transformer for transforming a portion of the list of native interface function calls into one of a constant, an internal just-in-time compiler operation and a simpler intermediate representation using results of the definition and use analysis.

A computer program product in a computer readable medium for transforming native interface function calls into simpler operations during just-in-time compilation, the computer program product comprising:

• first instructions for constructing a list of intermediate representation shapes representing a plurality of native interface function calls;
• second instructions for identifying a list of native interface function calls for possible transformation by matching the plurality of native interface function calls made in the native language program against the list of shapes;
• third instructions for performing a definition and use analysis on each of the list of identified native interface function calls by tracking a plurality of values passed as parameters to a plurality of arguments of native interface functions, wherein the definition and use analysis determines what variables are defined and where the defined variables are used;
• and
• fourth instructions for transforming a portion of the list of native interface function calls into one of a constant, an internal just-in-time compiler operations and a simpler intermediate representation using results of the definition and use analysis.