I developed compilers for general-purpose computers since I was in the third grade of the university. The first one is a compiler of SIMPL, which appeared monthly in a Japanese magazine called "bit", but I developed it independently from the magazine article. When I was in the graduate school, I developed a Pascal compiler to be used in the Educational Computer Center of the University of Tokyo. After I was employed, I was involved in two Fortran compiler development projects. I described the first one, a development for vector processors, in another entry. In the redevelopment of compiler after so-called IBM case, we developed a dataflow analysis methods for arrays.