Storage medium storing program directing computer to control optimization of program, and program optimizing apparatus

A program optimizing method for optimizing a program, comprising:

• extracting data items from the program;
• laying out the data items in memory provided in the computer;
• extracting defined but unused data items from the extracted data items;
• determining whether or not a plurality of data items forming at least a part of a data item having a hierarchical structure in the unused data items can be merged into a new data item based on the layout result;
• and
• changing the program such that the plurality of data items are merged into the new data item based on the determination result.

An optimizing apparatus for optimizing a program, comprising:

• a data item extraction unit extracting data items from the program;
• a layout unit laying out the extracted data items in memory;
• an unused data item extraction unit extracting defined but unused data items from the extracted data items;
• a merge determination unit determining based on the layout result whether or not a plurality of unused data items forming at least a part of a data item having a hierarchical structure in the unused data items can be merged into a new data item;
• and
• a data item merge unit outputting the program in which the plurality of data items are merged into the new data item.

An optimizing apparatus for optimizing a program, comprising:

• data item extraction means for extracting data items from the program;
• layout means for laying out the extracted data items in memory;
• unused data item extraction means for extracting defined but unused data items from the extracted data items;
• merge determination means for determining based on the layout result whether or not a plurality of unused data items forming at least a part of a data item having a hierarchical structure in the unused data items can be merged into a new data item;
• and
• data item merge means for outputting the program by which the plurality of data items are merged into the new data item.