PROBLEM TO BE SOLVED: To provide a compiling device for achieving harmonization of the whole optimization and local optimization of a program. SOLUTION: The register assigning part 13 of a compiling device inputs a program configured of a loop and the other section, and gives a first priority to the respective variables of the program on the basis of the loop and the other section, and assigns a global register to the prescribed number of variables (first variables) in the order of the high first priority, and assigns a non-global register to the residual variables (second variables) (first assignment). The register assignment part 13 gives second priority to the respective variables on the basis of a loop section, and reassigns the global register assigned to any variable (third variable) whose second priority is lower than the second priority of the fourth variable among the first variables to any variable (fourth variable) whose second priority is higher than the second priority of any first variable among the second variables (second assignment). COPYRIGHT: (C)2010,JPO&INPIT

Compiling device, compiler, and compiling method

The present invention provides a solution with which it is possible to assure safety of an application program. This execution code provision method comprises: a step for preparing a source code in accordance with a user operation; a step for generating an intermediate representation from the source code; a step for verifying whether or not the intermediate representation satisfies a prescribed rule or protocol; and a step for implementing the execution of an execution code generated from the intermediate representation in the case when the intermediate representation meets the prescribed rule or protocol.

Execution code provision method and software development system

PROBLEM TO BE SOLVED: To effectively optimize an object code in the range satisfying limitation caused by the number of physical registers of a processor. SOLUTION: This compiler device performs code generation from a program represented by a DAG(directed acyclic graph) while evaluating the number of used registers and the number of execution cycles and optimizes a code to be generated. That is, the compiler calculates the number of cycles with which each operation can be executed on the DAG and the number of the currently available registers, performs code generation while preceding an operator on an execution path that takes the most time in the DAG in a part where the number of registers is sufficient, and performs code generation while preceding such an operator as to reduce the number of used registers when the number of registers is not sufficient.

Device and method for compilation

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Device and method for compilation