Abstract: An optimizing apparatus includes a data item extraction unit, a layout unit, an unused data item extraction unit, a merge determination unit, and a data item merge unit. The data item extraction unit extracts data items from a program. The layout unit lays out the extracted data item in memory. The unused data item extraction unit extracts defined but unused data items from the extracted data items. The merge determination unit determines based on the layout result whether or not a plurality of unused data items forming a data item having a hierarchical structure can be merged into a new data item. The data item merge unit merges the plurality of data items into a data item based on the determination result.

Abstract: An optimizing apparatus includes a data item extraction unit, a layout unit, an unused data item extraction unit, a merge determination unit, and a data item merge unit. The data item extraction unit extracts data items from a program. The layout unit lays out the extracted data item in memory. The unused data item extraction unit extracts defined but unused data items from the extracted data items. The merge determination unit determines based on the layout result whether or not a plurality of unused data items forming a data item having a hierarchical structure can be merged into a new data item. The data item merge unit merges the plurality of data items into a data item based on the determination result.

Abstract: In order to generate optimum codes for array descriptions having a new language specification, an optimization control apparatus or method for array description executes a function of determining a scope of executing optimization for the array descriptions on the basis of an optimization level determined in advance, the dimension number of an array of the array descriptions, and the array number of each dimension; a function of extracting information representing the respective forms of the array descriptions within the scope of executing the optimization; a function of detecting a common expression for each array description and recognizing information common to each array description; and a function of executing a loop merge determination process as to whether or not a loop merge for converting each array description to an optimum loop is to be carried out, for each array description whose form is defined during the generation of the optimum codes.