Procedure cloning
نویسندگان
چکیده
Procedure cloning is an interprocedural optimization where the compiler creates specialized copies of procedure bodies. To clone a procedure, the compiler repli-cates it and then divides the incoming calls between the original procedure and the copy. By carefully partitioning the call sites, the compiler can ensure that each clone inherits an environment that allows for better code optimization. Subsequent optimization tailors the various procedure bodies. This paper examines the problem of procedure cloning. It describes an experiment where cloning was required to enable other transformations. It presents a three-phase algorithm for deciding how to clone a program, and analyzes the algorithm's complexity. Finally , it presents a set of assumptions that bound both the running time of the algorithm and the expansion in code size.
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