1. A compiler for generating object code from an input source program, the compiler comprising: a syntax analyzer configured to analyze whether or not an operation described in the source program conforms to grammatical rules, and to analyze whether or not a combination of the operations defines an intrinsic function and details of processing operations of the intrinsic function; an intrinsic function definition database configured to store a definition of the intrinsic function and the details of the processing operations of the intrinsic function, as analyzed by the syntax analyzer; a code generator configured to generate machine instructions from the source program based on a result of the processing of the syntax analyzer; and a code optimizer configured to optimize the machine instructions to machine instructions corresponding to the details of the processing operations of the intrinsic function, in a case where a string of the machine instructions generated by the code generator are in agreement with the details of the processing operations of the intrinsic function stored in the intrinsic function definition database.