公开(公告)号：JP2002259135A

公开(公告)日：2002-09-13

申请号：JP2001055996

申请日：2001-02-28

Applicant: IBM

Inventor： KAWAHITO MOTOHIRO ,  KOMATSU HIDEAKI ,  JOHN FARLEY

IPC: G06F9/45 ,  G06F9/44

Abstract: PROBLEM TO BE SOLVED: To shorten time required for compilation including optimization based on specification and to suppress memory consumption for compilation. SOLUTION: The compiler 10 is provided with an influence degree analysis part 12 for analyzing how much the execution speed of a program to be compiled can be improved by fixing the parameter of a prescribed instruction in the program to a specific state, a specification data selection part 13 for taking the statistics of appearance frequency in each state of the parameter of the instruction analyzed by the analysis part 12 and determining which state is to be adopted for the parameter of the instruction based on the obtained static information and a specified compiling processing part 14 for generating a specified pass fixing the parameter of the prescribed instruction to the specific state in the program based on the processing results of the analysis part 12 and the selection part 13.