1. A method of performing cache coloring, comprising the steps of: generating a dynamic function flow representing a temporal sequence in which a plurality of functions are called at a time of executing a program comprised of the plurality of functions by executing the program by a computer; generating function strength information in response to the dynamic function flow by use of the computer, said function strength information including information about runtime relationships between any given one of the plurality of functions and all the other ones of the plurality of functions in terms of a way the plurality of functions are called and further including information about degree of certainty of cache miss occurrence; and allocating the plurality of functions to memory space by use of the computer in response to the function strength information such as to reduce instruction cache conflict.