Architecture cloning for power PC processors

摘要

A method for implementing architecture cloning including: constructing a program call graph in a link phase of interprocedural analysis to model calling relationships between one or more procedures in a program; analyzing the program call graph to obtain information about the program; analyzing the program to identify the one or more procedures subject to architecture cloning; determining feasibility of architecture cloning; marking the one or more procedures in the program suitable for architecture cloning; naming the one or more procedures in the program suitable for architecture cloning; inserting a runtime routine call at an entry point of the program; invoking architecture cloning when one or more candidate procedures are identified during procedure cloning; providing a user with an interface for specifying multiple architecture targets to the compiler; and enabling the compiler to generate architectural specific instructions optimized for each of the multiple architecture targets.